Top Software Developers in Seattle
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174 Companies
List of the Top Seattle Custom Software Development Companies
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Featured
What are Featured Providers?
$50,000+$50 - $99 / hr1,000 - 9,999Serves Seattle, WAServices provided
10% Custom Software Development10% AI Development10% Application Testing +7 services10% Blockchain10% Cloud Consulting & SI10% DevOps Managed Services10% Enterprise App Modernization10% IT Staff Augmentation10% Mobile App Development10% Web DevelopmentSee all 100 projectsVention is a proficient full-stack software development company, excelling in custom software creation and managed software development. They are praised for their consistent on-time delivery, excellent communication, and strong team collaboration. Approximately 80% of reviewers highlight their culture fit and seamless integration with client teams. Vention's flexibility and proactive problem-solving approach are key attributes that contribute to their highly positive feedback.
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Bilberrry
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$25,000+$50 - $99 / hr10 - 49Seattle, WAServices provided
50% Custom Software Development20% IT Staff Augmentation10% API Development +2 services10% Web Design10% Web DevelopmentSee all 35 projectsBilberrry is a bespoke software development company specializing in tailored software development and full-stack software engineering services. Across diverse projects, clients consistently laud their strategic approach, technical expertise, and responsive project management. Approximately 90% of reviewers highlight Bilberrry's strong communication and ability to deliver on time, with 80% noting their capability to translate complex requirements into seamless digital solutions, thus establishing themselves as a reliable partner in custom software creation.
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$5,000+$150 - $199 / hr10 - 49Serves Seattle, WA
Services provided
10% Custom Software Development40% Mobile App Development30% Web Development +2 services10% IT Managed Services10% Web DesignSee all 32 projectsSembit is a bespoke software development company specializing in tailored and end-to-end software solutions. They have consistently received positive feedback, with 100% of reviewers praising their communication and project management skills. Clients highlight their ability to deliver high-quality work on time, with 80% noting their exceptional responsiveness and alignment with client needs. Their service excellence and collaborative approach are frequently commended.
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Featured
What are Featured Providers?
$25,000+$25 - $49 / hr1,000 - 9,999Serves Seattle, WAServices provided
10% Custom Software Development20% AI Development20% Cloud Consulting & SI +5 services10% CRM Consulting and SI10% E-Commerce Development10% ERP Consulting and SI10% Enterprise App Modernization10% Mobile App DevelopmentSee all 84 projectsSimform is a custom software development company specializing in tailored software creation and full-stack software development. With a strong emphasis on responsiveness, expertise, and professionalism, 88% of reviews highlight their technical skill and project management prowess, particularly in Python and JavaScript. However, there are concerns regarding transparency in scope management and billing, as noted in one review.
$25,000+$25 - $49 / hr50 - 249Serves Seattle, WAServices provided
10% Custom Software Development50% Mobile App Development30% AI Development +1 service10% IoT DevelopmentSee all 118 projectsTechAhead is a distinguished company specializing in Custom Software Development, offering solutions in mobile and web applications, CMS, and IoT firmware. With an impressive track record, approximately 90% of clients express satisfaction with their software engineering and project management capabilities. Clients frequently praise their responsive communication and tailored software development expertise.
$50,000+$50 - $99 / hr1,000 - 9,999Serves Seattle, WAServices provided
10% Custom Software Development10% AI Development10% Application Testing +7 services10% Blockchain10% Cloud Consulting & SI10% DevOps Managed Services10% Enterprise App Modernization10% IT Staff Augmentation10% Mobile App Development10% Web DevelopmentSee all 100 projectsVention is a proficient full-stack software development company, excelling in custom software creation and managed software development. They are praised for their consistent on-time delivery, excellent communication, and strong team collaboration. Approximately 80% of reviewers highlight their culture fit and seamless integration with client teams. Vention's flexibility and proactive problem-solving approach are key attributes that contribute to their highly positive feedback.
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$50,000+$50 - $99 / hr250 - 999Seattle, WA
Services provided
70% Custom Software Development10% AI Development10% Cloud Consulting & SI +1 service10% Mobile App DevelopmentSee all 41 projectsJelvix is a highly regarded custom software development company offering tailored solutions across various industries. They have received overwhelmingly positive feedback, with approximately 100% of reviews praising their project management, technical expertise, and ability to deliver complex integrations and scalable solutions. Notably, around 70% of reviewers specifically commend their efficiency and collaborative approach in managing healthcare-specific projects and data integration tasks.
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$5,000+$100 - $149 / hr50 - 249Seattle, WA
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10% Custom Software Development40% Web Design30% Web Development +2 services10% Mobile App Development10% UX/UI DesignSee all 98 projectsUPQODE is a custom software development company renowned for its meticulous attention to detail and effective project management. Approximately 100% of reviews praised their ability to execute designs accurately and maintain open, direct communication throughout the project lifecycle. Clients highlight their impressive execution in both front- and back-end development, emphasizing their responsiveness and problem-solving abilities.
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Featured
What are Featured Providers?
$50,000+$25 - $49 / hr50 - 249Serves Seattle, WAServices provided
20% Custom Software Development20% IT Staff Augmentation20% Web Design +3 services15% Cybersecurity15% Mobile App Development10% Cloud Consulting & SISee all 12 projectsElaniin is a custom software development company praised for its exceptional software engineering capabilities, offering tailored and full-stack software development services. With a consistent commitment to client satisfaction, 100% of reviews highlight their effective communication and collaborative project management. While some suggest improved project timelines, 75% commend their adaptability and expertise in delivering complex solutions.
$25,000+$25 - $49 / hr50 - 249Serves Seattle, WAServices provided
70% Custom Software Development15% AI Consulting15% Web DevelopmentSee all 30 projectsWeSoftYou is a Custom Software Development company specializing in tailored and full-stack software development services. Their reviews highlight a 100% satisfaction rate, with clients praising their dedication, innovative solutions, and efficient project management. Approximately 85% of reviewers commend their ability to deliver user-centric, scalable solutions on time, while 90% emphasize their seamless communication and responsiveness to client needs.
$25,000+$150 - $199 / hr10 - 49Serves Seattle, WAServices provided
20% Custom Software Development10% AR/VR Development10% Blockchain +6 services10% ERP Consulting and SI10% Enterprise App Modernization10% IT Strategy Consulting10% Mobile App Development10% UX/UI Design10% Web DevelopmentSee all 19 projectsIron Forge Development is a custom software development company specializing in tailored software creation and full-stack software development. Reviews suggest they have a flexible and scalable approach, with 83% of feedback highlighting their adaptability and communication. However, 17% noted room for improvement in project management and scoping. Clients commend their ability to deliver complex solutions, manage end-to-end projects, and effectively meet evolving needs.
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$10,000+$150 - $199 / hr10 - 49Medina, WA
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20% Custom Software Development25% Mobile App Development25% UX/UI Design +2 services15% Web Design15% Web DevelopmentSee all 29 projectsFlower Press Interactive is a custom software development company specializing in tailored and bespoke software creation. Reviews highlight their strong project management skills, thoroughness, and proactive communication. Approximately 100% of reviewers commend their ability to enhance initial concepts, ensure user-friendly design, and deliver high-quality software solutions. Clients appreciate their responsiveness and collaborative approach to complex projects.
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$25,000+$150 - $199 / hr10 - 49Seattle, WA
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10% Custom Software Development30% Web Design30% Web Development +3 services20% Digital Strategy5% Conversion Optimization5% DevOps Managed ServicesSee all 15 projectsCulture Foundry is a bespoke software development company praised for its tailored software solutions and end-to-end software development services. Their reviews highlight a commitment to creativity, effective project management, and responsiveness, with 100% positive feedback emphasizing their ability to deliver customized, mobile-friendly solutions for complex projects. Notably, 28% growth in registrations reflects their impactful work.
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$25,000+$150 - $199 / hr10 - 49Seattle, WA
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15% Custom Software Development70% UX/UI Design15% Mobile App DevelopmentSee all 15 projectsUpTop is a custom software development company specializing in UI/UX design and frontend development, with expertise in mobile app creation and backend integration. Their clients appreciate their flexibility, strong project management, and commitment to deadlines, as highlighted by 100% positive feedback across reviews. Users value their collaborative approach, emphasizing open communication and integration with client operations, enhancing product efficiency and user engagement.
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$25,000+$25 - $49 / hr50 - 249Seattle, WA
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10% Custom Software Development50% IT Staff Augmentation30% Staffing +1 service10% Web DevelopmentSee all 19 projectsTecla is a bespoke software development firm that specializes in providing tailored software creation and staffing solutions for various industries, including cybersecurity and healthcare. The company consistently receives positive feedback, with clients praising its efficient project management and alignment with client values. Approximately 90% of reviewers highlight Tecla's ease of hiring and commitment to delivering high-quality, time-zone-compatible candidates.
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$50,000+$100 - $149 / hr10 - 49Seattle, WA
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20% Custom Software Development40% Mobile App Development20% Web Development +3 services10% UX/UI Design5% Branding5% Web DesignSee all 5 projectsNew Normal is a provider of bespoke software development services, specializing in end-to-end software creation for diverse industries, including music and automotive sectors. Across the reviews, 100% of clients commend New Normal for their responsiveness and ability to deliver complex solutions on time, while 25% suggest minor areas for improvement, such as clearer communication in refactoring work or alignment in code repository usage.
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Featured
What are Featured Providers?
$25,000+$50 - $99 / hr250 - 999Serves Seattle, WAServices provided
35% Custom Software Development25% Cloud Consulting & SI10% AI Consulting +3 services10% AI Development10% BI & Big Data Consulting & SI10% Web DevelopmentSee all 51 projectsFuture Processing is a Custom Software Development company known for its bespoke software creation and software engineering expertise. The company has consistently received positive feedback, with reviewers highlighting their high-quality deliverables, technical proficiency, and strong cultural fit. Approximately 90% of reviewers praise their ability to meet project timelines and effectively manage teams, while around 80% commend their communication style and commitment to partnership.
$10,000+$50 - $99 / hr50 - 249Serves Seattle, WAServices provided
20% Custom Software Development20% IT Staff Augmentation15% Mobile App Development +3 services15% UX/UI Design15% Web Design15% Web DevelopmentSee all 55 projectsRubyroid Labs specializes in Custom Software Development, offering services such as full stack, bespoke, and managed software development. Their reviews highlight a 100% positive feedback rate, with clients praising their proactive communication, timely delivery, and problem-solving capabilities. Approximately 70% of reviewers commend their value for cost, while 60% emphasize their technical expertise and adaptability in handling complex projects.
$10,000+$25 - $49 / hr10 - 49Serves Seattle, WAServices provided
20% Custom Software Development35% Mobile App Development20% UX/UI Design +2 services15% IoT Development10% Web DevelopmentSee all 29 projectsOlearis is a Custom Software Development company specializing in tailored software creation and full-stack development, with a focus on mobile and web applications. Reviews highlight their professionalism, responsiveness, and expertise, with 83% of feedback being positive. However, one reviewer cited significant project management and delivery issues, emphasizing the importance of clear communication and direct contact with developers.
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$10,000+$50 - $99 / hr50 - 249Seattle, WA
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10% Custom Software Development10% AI Consulting10% AI Development +7 services10% Enterprise App Modernization10% Generative AI10% IT Managed Services10% Mobile App Development10% UX/UI Design10% Web Design10% Web DevelopmentSee all 12 projectsSoftDoes is a versatile custom software development company specializing in tailored software solutions that optimize business operations and enhance efficiency. They receive overwhelmingly positive feedback, with 100% of reviewers highlighting their exceptional customer service, timely delivery, and commitment to client success. Their solution-oriented approach is praised by 100% of clients for transforming business processes and fostering long-term partnerships.
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$10,000+$100 - $149 / hr250 - 999Bellevue, WA
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35% Custom Software Development20% AI Consulting15% Generative AI +2 services15% Mobile App Development15% Web DevelopmentSee all 13 projectsAffirma Consulting is a comprehensive IT consulting firm specializing in custom software creation and full-stack software development. Their clients consistently praise their adaptability and project management skills, with approximately 100% of reviews noting their effective communication and timely delivery. Affirma's ability to seamlessly integrate into ongoing projects and provide tailored software solutions is frequently highlighted by reviewers.
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Featured
What are Featured Providers?
$25,000+$50 - $99 / hr10 - 49Serves Seattle, WAServices provided
15% Custom Software Development30% Mobile App Development30% Web Development +2 services15% UX/UI Design10% AI ConsultingSee all 37 projectsCalibrate Software is a bespoke software development company that excels in custom software creation, providing tailored solutions in various industries. Reviews highlight their strong project management, responsiveness, and excellent communication, with 100% positive feedback on collaboration and adaptability. Clients appreciate their innovative approach and commitment to customer success, though timelines occasionally exceed initial estimates.
$5,000+$50 - $99 / hr10 - 49Serves Seattle, WAServices provided
25% Custom Software Development30% Mobile App Development20% Web Development +2 services15% E-Commerce Development10% UX/UI DesignSee all 17 projectsSemaphore Mobile is a custom software development company specializing in tailored software solutions, including mobile apps and full-stack development across various platforms. Reviews indicate a 100% positive feedback rate, highlighting their professional project management, effective communication, and ability to understand and execute clients’ visions. Clients consistently praise their dedication, high-quality deliverables, and strong alignment with project goals.
$10,000+$50 - $99 / hr250 - 999Serves Seattle, WAServices provided
30% Custom Software Development10% Application Management & Support10% BI & Big Data Consulting & SI +6 services10% IT Managed Services10% IT Staff Augmentation10% Mobile App Development10% Web Development5% API Development5% DevOps Managed ServicesSee all 32 projectsScalo is a full-stack software development company specializing in tailored software development and providing skilled IT specialists for diverse industries. The company receives predominantly positive feedback, with approximately 90% of reviewers highlighting their technical expertise, proactive communication, and ability to deliver projects on time. Clients consistently appreciate Scalo's alignment with company values and the strong culture fit they provide.
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$5,000+$50 - $99 / hr10 - 49Seattle, WA
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20% Custom Software Development20% Mobile App Development20% Web Development +4 services10% AI Development10% Blockchain10% E-Commerce Development10% IT Staff AugmentationSee all 18 projectsSlashdev is a Custom Software Development company offering bespoke software creation and full-stack software development services. Across reviews, 100% of clients praised their rapid talent acquisition, project management, and cost-effectiveness. A significant 80% highlighted Slashdev's flexibility and quick communication, making them an appealing choice for tailored software development needs.
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$25,000+$25 - $49 / hr250 - 999Kirkland, WA
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10% Custom Software Development20% IT Staff Augmentation20% IT Strategy Consulting +5 services10% AI Consulting10% AI Development10% IT Managed Services10% Mobile App Development10% Web DevelopmentSee all 8 projectsNearsure is a custom software development company specializing in staff augmentation and tailored software solutions. Across reviews, clients praise their high-quality personnel, flexibility, and strong cultural fit, with 100% positive feedback highlighting their impressive project management and collaboration skills. Their work in full-stack and end-to-end software development is notably effective, with clients consistently satisfied with the outcomes and timeliness.
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Featured
What are Featured Providers?
$10,000+$25 - $49 / hr250 - 999Serves Seattle, WAServices provided
35% Custom Software Development20% IT Staff Augmentation15% AI Development +3 services10% Cloud Consulting & SI10% Enterprise App Modernization10% Web DevelopmentSee all 67 projectseSparkBiz is a custom software development company specializing in tailored software creation and end-to-end software development solutions. The reviews indicate a 100% positive feedback rate, highlighting their impressive project management, commitment to timely delivery, and successful integration into client teams. A notable 60% of reviewers praised their cultural fit and communication skills, enhancing collaboration and overall satisfaction.
$25,000+$50 - $99 / hr250 - 999Serves Seattle, WAServices provided
20% Custom Software Development50% AI Development20% IT Staff Augmentation +1 service10% Cloud Consulting & SISee all 53 projectsCodeNinja is a distinguished company in the Custom Software Development sector, excelling in bespoke software creation and full-stack software development. Reviews reveal a 100% positive feedback rate, with CodeNinja lauded for its effective project management and ability to adapt to client needs. Notably, 80% of clients highlight their impressive responsiveness and customization capabilities, underscoring CodeNinja's commitment to delivering tailored, end-to-end software solutions.
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$50,000+$50 - $99 / hr50 - 249Seattle, WA
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10% Custom Software Development20% Generative AI20% IT Staff Augmentation +5 services10% AI Development10% Low/No Code Development10% Mobile App Development10% Recruiting10% Web DevelopmentSee all 23 projectsThirstySprout is a custom software development company adept in full stack and bespoke software development, known for their tailored solutions and managed software development services. Across various projects, they receive unanimous praise for their proactive project management and technical expertise, leading to high client satisfaction. Remarkably, 100% of reviews highlight their ability to meet deadlines and exceed expectations.
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$1,000+Undisclosed1,000 - 9,999Bellevue, WA
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10% Custom Software Development10% AI Development10% BI & Big Data Consulting & SI +7 services10% Cloud Consulting & SI10% Executive Search10% Generative AI10% IT Managed Services10% Recruiting10% Recruitment Process Outsourcing10% StaffingInsight Global, a big data analytics company, provides BI & big data consulting & SI and cloud consulting & SI. The firm is located in Atlanta, Georgia and Birmingham, Alabama.
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$25,000+$150 - $199 / hr10 - 49Seattle, WA
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45% Custom Software Development15% Web Development10% API Development +5 services10% Mobile App Development5% Application Management & Support5% E-Commerce Development5% UX/UI Design5% Web DesignSee all 2 projectsBase Two is a technology consulting firm specializing in e-commerce platform development and ERP systems integration. Reviews highlight their expertise and adaptability, with measurable outcomes such as an 80% performance increase and 80% drop in customer complaints during peak sales events. While praised for their professionalism, there's room for improvement in documentation processes as systems mature.
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$50,000+$100 - $149 / hr50 - 249Seattle, WA
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20% Custom Software Development40% AI Development20% BI & Big Data Consulting & SI +1 service20% IoT DevelopmentJanea Systems is an artificial intelligence company. Their team is located in Seattle, Washington. The firm provides Artificial Intelligence and BI & big data consulting & SI.
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$50,000+$100 - $149 / hr10 - 49Seattle, WA
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60% Custom Software Development20% Other Application Development20% Web DevelopmentSee all 1 projectsATOMICUS is a bespoke software development company known for its expertise in scientific and research applications, particularly in physics and data visualization. Reviewers unanimously commend its ability to meet industry standards and deliver high-quality services promptly, noting the unique scientific expertise that distinguishes it from competitors.
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$25,000+$50 - $99 / hr50 - 249Seattle, WA
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10% Custom Software Development15% AI Development15% IT Staff Augmentation +6 services10% BI & Big Data Consulting & SI10% DevOps Managed Services10% IoT Development10% Mobile App Development10% UX/UI Design10% Web DevelopmentSee all 32 projectsMobcoder is a bespoke software development company highly praised for its strong technical capabilities and commitment to deadlines. With an impressive 100% of reviews highlighting timely delivery and professionalism, Mobcoder excels in end-to-end software development, including custom apps, web platforms, and data visualization. While some reviews suggest room for improvement in bug testing, clients consistently commend their service-oriented approach and flexibility in accommodating changes.
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$5,000+$50 - $99 / hr250 - 999Kirkland, WA
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10% Custom Software Development40% IT Staff Augmentation15% E-Commerce Development +5 services14% Low/No Code Development10% Web Development5% DevOps Managed Services5% Mobile App Development1% BI & Big Data Consulting & SISee all 36 projectsUKAD is a bespoke software development company that offers tailored solutions including full-stack and managed software development. Feedback from clients is overwhelmingly positive, with 100% praising the company's technical proficiency, commitment to project timelines, and effective communication. Notably, 80% of reviews highlight their ability to deliver complex projects seamlessly and to integrate within existing teams, showcasing dedication to client satisfaction and excellence.
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$10,000+$150 - $199 / hr10,000+Bellevue, WA
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10% Custom Software Development10% AI Agents10% AI Consulting +8 services10% AI Development10% BI & Big Data Consulting & SI10% Cloud Consulting & SI10% Enterprise App Modernization10% Generative AI10% IT Strategy Consulting5% Business Consulting5% Web DesignSee all 9 projectsBeyondsoft Consulting Inc. is a versatile company specializing in bespoke software development and software engineering services. Reviews highlight their technical expertise and 20 years of experience, with clients appreciating their open communication and adaptability. Approximately 90% of feedback emphasizes their adept project management and the valuable insights gained, although some clients noted a need for active involvement in project management to ensure progress.
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$25,000+$100 - $149 / hr2 - 9Seattle, WA
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30% Custom Software Development40% Web Development30% Mobile App DevelopmentSee all 9 projectsLunarbyte.io is a Custom Software Development firm specializing in tailored software solutions and full-stack development. Feedback across reviews is overwhelmingly positive, with clients praising their adaptability, responsiveness, and effective communication. Notably, 100% of clients mention improved project outcomes and efficiency, while many highlight their flexible engagement model and strong project management skills.
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$25,000+$100 - $149 / hr2 - 9Seattle, WA
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15% Custom Software Development25% Web Development15% E-Commerce Development +4 services15% UX/UI Design10% Low/No Code Development10% Product Design10% Web DesignSee all 21 projectsBlack Antelope is a boutique firm specializing in Custom Software Development, with a focus on bespoke and full-stack solutions. The company consistently receives positive feedback, with over 90% of reviewers praising their technical expertise and timely project delivery. Clients appreciate their personalized approach and efficient project management, though some suggest improvements in cost reporting.
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$25,000+$50 - $99 / hr50 - 249Seattle, WA
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25% Custom Software Development25% AI Consulting20% Product Design +2 services15% Mobile App Development15% Web DevelopmentSee all 3 projectsDevblock / Db_studio is a proficient custom software development company, specializing in bespoke software creation and end-to-end software development solutions. They have consistently delivered on-time projects, with 100% positive feedback emphasizing their tailored and creative approach, aligning with client values and budget constraints. Their commitment to finding optimal solutions is highly praised by all reviewers.
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$10,000+$50 - $99 / hr50 - 249Kirkland, WA
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10% Custom Software Development15% AI Development15% Generative AI +6 services10% AI Consulting10% Blockchain10% IT Managed Services10% IT Staff Augmentation10% Mobile App Development10% Web DevelopmentSee all 12 projectsAccelOne is a custom software development company praised for their robust full-stack and bespoke software development services. They consistently deliver high-quality, tailored solutions, with 100% of reviewers noting their impressive project management and adaptability. Clients appreciate their commitment to deadlines, seamless team integration, and the high standards they uphold in software engineering, making them a reliable partner for projects of moderate size and complexity.
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$5,000+$50 - $99 / hr50 - 249Seattle, WA
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10% Custom Software Development10% AI Consulting10% AI Development +7 services10% Application Testing10% BI & Big Data Consulting & SI10% Cloud Consulting & SI10% IT Managed Services10% Mobile App Development10% Other Application Development10% Web DevelopmentSee all 11 projectsInnova is a bespoke software development company offering tailored solutions, including end-to-end and full-stack software development. Across various reviews, 100% of clients commend Innova's technical expertise, timely delivery, and innovative problem-solving, with multiple reviewers highlighting their alignment with company values and budgetary constraints. Notably, they excel in integrating advanced functionalities and recovering significant client opportunities, with one client noting a 18–22% recovery of lost leads.
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UndisclosedUndisclosed50 - 249Seattle, WA
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10% Custom Software Development20% UX/UI Design15% IT Strategy Consulting +7 services15% Mobile App Development10% Web Design10% Web Development5% AR/VR Development5% Application Management & Support5% Application Testing5% Enterprise App ModernizationSee all 1 projectsSmashing Ideas is a creative agency specializing in mobile app development with a strong focus on interactive and engaging experiences. Reviews highlight their exceptional creativity and ability to execute feasible and innovative ideas, with approximately 100% of feedback acknowledging their creative prowess. While they excel in iOS development, some feedback indicates a need for improvement in Android development. Overall, clients continue to engage them, reflecting positive satisfaction.
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$25,000+$150 - $199 / hr2 - 9Seattle, WA
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65% Custom Software Development35% Web DevelopmentSee all 1 projectsNorthwest Independent Ruby Development is a specialized software development company focusing on Ruby on Rails projects, particularly those requiring HIPAA compliance. The company received overwhelmingly positive feedback, with clients appreciating their effective project management and ability to translate technical issues into non-technical terms. Approximately 100% of the reviewers highlighted their strong communication skills and ability to address complex development challenges efficiently.
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$10,000+$200 - $300 / hr2 - 9Seattle, WA
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10% Custom Software Development20% Product Design20% UX/UI Design +3 services20% Web Design20% Web Development10% BrandingSee all 1 projectsMatey is a user experience design company that excels in app development, user journey, and website design. The feedback highlights their ability to deliver projects on time with impressive detail, with 100% of reviewers mentioning their alignment with company values and vision. The company is praised for understanding end goals without imposing personal agendas.
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$10,000+$25 - $49 / hr50 - 249Bellevue, WA
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25% Custom Software Development20% IT Managed Services15% CRM Consulting and SI +4 services10% BI & Big Data Consulting & SI10% Blockchain10% Enterprise App Modernization10% Web DevelopmentSee all 1 projectsVirtuosity Consulting is a consultancy firm specializing in providing program managers and developers to streamline release processes for enterprises. The company receives overwhelmingly positive feedback, with clients highlighting their ownership of projects, flexibility, and seamless integration as an extension of the team. Nearly all reviewers emphasize their excellent service quality and adaptability to changing demands.
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$1,000+< $25 / hr10 - 49Lynnwood, WA
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20% Custom Software Development20% AI Development20% Cloud Consulting & SI +2 services20% IT Staff Augmentation20% Mobile App DevelopmentSee all 4 projectsTechlusion LLC is a Custom Software Development company specializing in bespoke software creation and full stack software development. The reviews highlight their effective project management, responsiveness, and ability to enhance client efficiency, with 100% work completion and a noted 25% increase in patient service capacity. Clients consistently appreciate their understanding of project needs and seamless communication.
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$5,000+$25 - $49 / hr10 - 49Bellevue, WA
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20% Custom Software Development20% Cloud Consulting & SI20% Mobile App Development +4 services10% API Development10% Application Management & Support10% Other Application Development10% Web DevelopmentSee all 3 projectsScalex Technology Solutions is a Custom Software Creation company specializing in tailored software development and end-to-end software development solutions. They are praised for their professional project management, effective communication, and engineering expertise, with 100% positive feedback highlighting their ability to meet deadlines and improve client productivity. The majority of reviewers commend their independence and quality work, though some suggest the addition of a dedicated project manager.
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UndisclosedUndisclosed1,000 - 9,999Kingston, WA
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20% Custom Software Development30% Mobile App Development20% Application Testing +2 services15% Graphic Design15% UX/UI DesignRoom 8 Group, an app development firm, was founded in 2011. They specializes in Mobile App Development and Custom Software Development.
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$5,000+$25 - $49 / hr50 - 249Clyde Hill, WA
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10% Custom Software Development15% Account-Based Marketing15% Search Engine Optimization +6 services10% AI Consulting10% E-Commerce Development10% Email Marketing10% Fractional CMO Services10% Web Design10% Web DevelopmentSee all 6 projectsGrowth Natives is a comprehensive service provider specializing in custom software creation and end-to-end software development solutions. The company is praised for its consultative approach and strong project management skills, with 100% of reviewers highlighting their effective communication and problem-solving capabilities. Clients appreciate their responsiveness and creativity, though a few noted initial miscommunication regarding project scope.
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$10,000+$50 - $99 / hr10 - 49Seattle, WA
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20% Custom Software Development20% AI Development20% IT Managed Services +2 services20% IT Staff Augmentation20% Web DevelopmentSee all 6 projectsDura Digital is a digital consulting firm specializing in UX/UI design and digital solutions development. They consistently receive positive feedback for their ability to deliver high-quality work, meet deadlines, and find culturally compatible talent. Approximately 100% of reviews highlight their excellent project management and alignment with client needs, with no significant areas for improvement reported.
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$1,000+$100 - $149 / hr250 - 999Bellevue, WA
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20% Custom Software Development30% E-Commerce Development20% Mobile App Development +2 services20% Web Development10% Web DesignSee all 1 projectsNeighborsoft.team is a web development company specializing in creating digital platforms for investment software firms. Reviews highlight their exceptional project management skills, responsiveness, and ability to simplify complex processes, with 100% positive feedback. Clients appreciate their expertise and patience, indicating a strong commitment to customer satisfaction and effective communication.
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$25,000+$25 - $49 / hr10,000+Bellevue, WA
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10% Custom Software Development10% AI Development10% BI & Big Data Consulting & SI +18 services10% Cloud Consulting & SI10% Cybersecurity10% Generative AI10% Mobile App Development10% Web Development5% IoT Development2% Digital Engineering2% Enterprise App Modernization2% IT Managed Services1% AI Consulting1% AR/VR Development1% Application Management & Support1% Application Testing1% Blockchain1% DevOps Managed Services1% E-Commerce Development1% Robotics Process Automation1% Wearable App DevelopmentSee all 1 projectsPersistent Systems is a software development company renowned for its expertise in low-code process management tools, web service development, and database work. Their reviews highlight a strong emphasis on flexibility and adaptability, with 100% of feedback noting their effective communication and project management capabilities. Clients particularly appreciate their critical thinking skills in adapting to changing project needs.
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$1,000+$50 - $99 / hr10 - 49Seattle, WA
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20% Custom Software Development20% Mobile App Development20% UX/UI Design +2 services20% Web Design20% Web DevelopmentSee all 5 projectsTekByt LLC is a web development company noted for its expertise in website design and development. The company consistently receives high praise for its exceptional communication, project management, and timely delivery. Across various reviews, 100% of clients commend TekByt LLC for their flexibility, creativity, and responsiveness, with no reported areas for improvement.
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$10,000+$150 - $199 / hr10 - 49Seattle, WA
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20% Custom Software Development20% Content Writing Services20% UX/UI Design +2 services20% Web Design20% Web DevelopmentSee all 3 projectsAlly, a web development company specializing in accessibility and compliance, receives consistently positive feedback for their technical expertise and project management skills. With 100% of reviewers praising their flexibility, clarity in communication, and timely delivery, Ally is recognized for their reliable partnership and ability to deliver accessible websites. A minor suggestion for improvement is to simplify technical language for clients.
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$1,000+Undisclosed10 - 49Redmond, WA
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25% Custom Software Development20% Web Development15% AI Development +4 services15% Mobile App Development10% Cloud Consulting & SI10% Generative AI5% DevOps Managed ServicesSee all 4 projectsAstrabitLLC is a Custom Software Development company renowned for its strong technical depth and disciplined execution. Reviewers highlight their expertise in reverse engineering and modernizing legacy systems, with 100% positive feedback on their efficiency and ability to deliver scalable solutions. Clients appreciate their collaborative engagement and structured project management approach, although more proactive long-term recommendations could enhance their service.
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$1,000+$50 - $99 / hr50 - 249Seattle, WA
Services provided
20% Custom Software Development45% Mobile App Development30% AI Development +1 service5% Web DevelopmentSee all 2 projectsFive Quantum Bits is a tailored software development company specializing in end-to-end software development with a focus on bespoke solutions for SaaS platforms. Reviews highlight their excellence in project management, scalability, and proactive communication, with 100% positive feedback noting significant business growth and user acquisition. They are praised for their clear communication, long-term solutions, and delivering on-time milestones.
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$10,000+$150 - $199 / hr10 - 49Seattle, WA
Services provided
20% Custom Software Development25% Web Development20% Mobile App Development +3 services20% UX/UI Design10% E-Commerce Development5% Web DesignSee all 6 projectsHelpful Human is a versatile company specializing in custom software creation and full-stack software development, offering tailored solutions for diverse project needs. Overall, 100% of the reviewers commend their flexibility, high-quality outputs, and effective communication. While their expertise in supporting junior to mid-level developers is well-noted, some clients seek more senior-level candidates.
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$1,000+< $25 / hr10 - 49Newcastle, WA
Services provided
15% Custom Software Development20% Mobile App Development20% Web Development +6 services15% Enterprise App Modernization10% E-Commerce Development5% Blockchain5% IoT Development5% Other Application Development5% Wearable App DevelopmentSee all 2 projectsHyperBeans is a digital marketing firm specializing in pre- and post-launch strategies. Reviews highlight the company’s proactive approach and responsiveness, with 100% positive feedback on their ability to lead projects and communicate effectively. However, their stringent initial requirement processes may occasionally be seen as cumbersome.
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$25,000+$25 - $49 / hr2 - 9Seattle, WA
Services provided
25% Custom Software Development50% Mobile App Development25% Web DesignSee all 1 projectsCodble is a custom software development company specializing in tailored software development solutions. Reviewers consistently highlight the company's adept software engineering and project management skills, noting their responsiveness and dedication to client visions, with approximately 100% of feedback being positive. Codble is praised for its technical expertise, creating scalable platforms with robust functionality and seamless user experiences.
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$5,000+$25 - $49 / hr10,000+Seattle, WA
Services provided
10% Custom Software Development30% Web Development10% Content Marketing +5 services10% Digital Strategy10% Mobile App Development10% Social Media Marketing10% UX/UI Design10% Web DesignGlobant is a large web development firm. They offer Web Development and Custom Software Development and were founded in 2003.
Read more -
Undisclosed$25 - $49 / hr50 - 249Seattle, WA
Services provided
20% Custom Software Development20% Mobile App Development20% Web Development +4 services10% Enterprise App Modernization10% IT Staff Augmentation10% UX/UI Design10% Web DesignNTSprint LLC is a software development company. They are located in Seattle, Washington and have midsize team of experts. Their services include Custom Software Development and Web Development.
Read more -
$5,000+$100 - $149 / hr2 - 9Burien, WA
Services provided
20% Custom Software Development20% E-Commerce Development20% Mobile App Development +3 services15% Web Design15% Web Development10% Search Engine OptimizationSandcastle Web Design and Development is a software development company established in 1998. The team specializes in Custom Software Development and Mobile App Development.
Read more -
$1,000+$50 - $99 / hr50 - 249Seattle, WA
Services provided
80% Custom Software Development20% Application Management & SupportConnectPOS is a software development firm. They were founded in 2013 and specialize in Custom Software Development and Application Management & Support.
Read more -
$100,000+Undisclosed50 - 249Seattle, WA
Services provided
25% Custom Software Development25% Mobile App Development25% Web Development +2 services20% Web Design5% BrandingLaunched in 2000, Carbon Five is a custom software development company. Their team specializes in Custom Software Development and Mobile App Development.
Read more -
$10,000+$150 - $199 / hr50 - 249Seattle, WA
Services provided
40% Custom Software Development10% Application Testing10% CRM Consulting and SI +6 services10% Unified Communications Consulting & SI10% Web Development5% BI & Big Data Consulting & SI5% Cloud Consulting & SI5% IoT Development5% Mobile App DevelopmentDMC, Inc., a custom software development firm, is based in Chicago, Illinois and Somerville, Massachusetts. The team provides Custom Software Development and CRM consulting and SI.
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This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.
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A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.
By using verified reviews, focused service details, and real project data, the Leaders Matrix highlights companies that consistently deliver and stand out from the rest. Each company’s position is based on how well they focus on a service area and how consistently they deliver results, helping you make informed, confident decisions. Learn More
Focus (x-axis)
Focus accounts for a company’s specialization within a certain service.
Ability to Deliver (y-axis)
Ability to Deliver considers three criteria:
- Client feedback and reviews
- Work experience and previous projects
- Market presence and reputation in the industry
List of the Top 15 Seattle Custom Software Development Companies
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$50,000+$50 - $99 / hr250 - 999Seattle, WA
Ability to deliver
38.9/40.020/20 Reviews9.1/10 Clients & Experience9.8/10 Market PresenceService focus
70% Custom Software Development30% Other -
$25,000+$50 - $99 / hr10 - 49Seattle, WA
Ability to deliver
37.9/40.018.6/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Custom Software Development50% Other -
$10,000+$100 - $149 / hr250 - 999Bellevue, WA
Ability to deliver
32.7/40.015.8/20 Reviews7.3/10 Clients & Experience9.6/10 Market PresenceService focus
35% Custom Software Development65% Other -
$5,000+$100 - $149 / hr50 - 249Seattle, WA
Ability to deliver
38.6/40.020/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
10% Custom Software Development90% Other -
$50,000+$100 - $149 / hr10 - 49Seattle, WA
Ability to deliver
31.5/40.016.4/20 Reviews9.5/10 Clients & Experience5.6/10 Market PresenceService focus
60% Custom Software Development40% Other -
$10,000+$150 - $199 / hr10 - 49Medina, WA
Ability to deliver
36/40.018.4/20 Reviews10/10 Clients & Experience7.7/10 Market PresenceService focus
20% Custom Software Development80% Other -
$5,000+$50 - $99 / hr10 - 49Seattle, WA
Ability to deliver
35.5/40.017/20 Reviews10/10 Clients & Experience8.5/10 Market PresenceService focus
20% Custom Software Development80% Other -
$25,000+$150 - $199 / hr10 - 49Seattle, WA
Ability to deliver
37.1/40.017.8/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
10% Custom Software Development90% Other -
$25,000+$25 - $49 / hr250 - 999Kirkland, WA
Ability to deliver
35.6/40.016.2/20 Reviews10/10 Clients & Experience9.4/10 Market PresenceService focus
10% Custom Software Development90% Other -
$25,000+$150 - $199 / hr10 - 49Seattle, WA
Ability to deliver
35.8/40.016.2/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
15% Custom Software Development85% Other -
$50,000+$50 - $99 / hr50 - 249Seattle, WA
Ability to deliver
35.9/40.017.6/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
10% Custom Software Development90% Other -
$25,000+$50 - $99 / hr50 - 249Seattle, WA
Ability to deliver
35.8/40.016.2/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
10% Custom Software Development90% Other -
$5,000+$50 - $99 / hr250 - 999Kirkland, WA
Ability to deliver
34.6/40.017.4/20 Reviews9.4/10 Clients & Experience7.8/10 Market PresenceService focus
10% Custom Software Development90% Other -
$10,000+$150 - $199 / hr10,000+Bellevue, WA
Ability to deliver
32.6/40.015.2/20 Reviews10/10 Clients & Experience7.4/10 Market PresenceService focus
10% Custom Software Development90% Other -
$25,000+$100 - $149 / hr2 - 9Seattle, WA
Ability to deliver
33.2/40.016.6/20 Reviews10/10 Clients & Experience6.6/10 Market PresenceService focus
30% Custom Software Development70% Other -
$25,000+$100 - $149 / hr2 - 9Seattle, WA
Ability to deliver
34.6/40.016.2/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
15% Custom Software Development85% Other -
$25,000+$25 - $49 / hr50 - 249Seattle, WA
Ability to deliver
34.2/40.019/20 Reviews8/10 Clients & Experience7.2/10 Market PresenceService focus
10% Custom Software Development90% Other -
$25,000+$50 - $99 / hr50 - 249Seattle, WA
Ability to deliver
30.1/40.017.6/20 Reviews6.1/10 Clients & Experience6.4/10 Market PresenceService focus
25% Custom Software Development75% Other -
$10,000+$50 - $99 / hr50 - 249Kirkland, WA
Ability to deliver
32.9/40.016/20 Reviews8.6/10 Clients & Experience8.3/10 Market PresenceService focus
10% Custom Software Development90% Other -
$5,000+$50 - $99 / hr50 - 249Seattle, WA
Ability to deliver
31.6/40.017.2/20 Reviews9.5/10 Clients & Experience4.9/10 Market PresenceService focus
10% Custom Software Development90% Other -
UndisclosedUndisclosed50 - 249Seattle, WA
Ability to deliver
30.8/40.016.2/20 Reviews8/10 Clients & Experience6.6/10 Market PresenceService focus
10% Custom Software Development90% Other -
$25,000+$150 - $199 / hr2 - 9Seattle, WA
Ability to deliver
23.8/40.016.2/20 Reviews2.4/10 Clients & Experience5.2/10 Market PresenceService focus
65% Custom Software Development35% Other -
$10,000+$200 - $300 / hr2 - 9Seattle, WA
Ability to deliver
29.5/40.016.4/20 Reviews9.1/10 Clients & Experience4/10 Market PresenceService focus
10% Custom Software Development90% Other -
$10,000+$25 - $49 / hr50 - 249Bellevue, WA
Ability to deliver
25.8/40.016.2/20 Reviews3.1/10 Clients & Experience6.5/10 Market PresenceService focus
25% Custom Software Development75% Other -
$1,000+< $25 / hr10 - 49Lynnwood, WA
Ability to deliver
25.9/40.017.6/20 Reviews3.7/10 Clients & Experience4.6/10 Market PresenceService focus
20% Custom Software Development80% Other -
$50,000+$100 - $149 / hr10 - 49Seattle, WA
Ability to deliver
25.8/40.017.4/20 Reviews3.8/10 Clients & Experience4.6/10 Market PresenceService focus
20% Custom Software Development80% Other -
$5,000+$25 - $49 / hr10 - 49Bellevue, WA
Ability to deliver
24.3/40.016.2/20 Reviews3.5/10 Clients & Experience4.6/10 Market PresenceService focus
20% Custom Software Development80% Other -
UndisclosedUndisclosed1,000 - 9,999Kingston, WA
Ability to deliver
19.5/40.00/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
20% Custom Software Development80% Other -
$5,000+$25 - $49 / hr50 - 249Clyde Hill, WA
Ability to deliver
25/40.015/20 Reviews0/10 Clients & Experience10/10 Market PresenceService focus
10% Custom Software Development90% Other -
$10,000+$50 - $99 / hr10 - 49Seattle, WA
Ability to deliver
23.6/40.017.4/20 Reviews1.2/10 Clients & Experience5/10 Market PresenceService focus
20% Custom Software Development80% Other
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Top Software Development Agencies in Seattle
Seattle software firms design, build, test, and maintain custom applications. Typical services include:
- Product discovery and technical road-mapping
- UX/UI design and prototyping
- Web, mobile, and cloud-native development (often on AWS or Azure)
- QA automation and DevOps
- Post-launch support and feature expansion Many local agencies also provide staff augmentation, allowing Seattle’s Fortune 500s and startups alike to scale quickly without recruiting overhead.
Here are some reasons why you should hire a local Seattle-based software development agency:
- Proximity to major cloud platforms (AWS, Azure, Google Cloud Northwest) gives local teams early access to new services and regional data centers.
- The city’s mature startup ecosystem, such as Techstars Seattle and Madrona Venture Group, means agencies are comfortable iterating fast and working with VC-backed roadmaps.
- Pacific Time overlaps conveniently with both East Coast business hours and APAC engineering teams, streamlining distributed collaboration.
Rates vary by specialty and team size:
- Mid-level custom software work: $125–$175 per hour
- High-complexity cloud or AI projects: $175–$250+ per hour Fixed-scope MVPs typically start around $75,000, while long-term enterprise engagements can exceed $500,000. Many boutique studios offer phased billing or sprint-based contracts so you can control burn rate.
Seattle developers commonly work in:
- Cloud & SaaS
- E-commerce and retail tech
- Healthcare and digital health
- Fintech and payments
- Maritime logistics and supply chain
- Gaming and AR/VR (bolstered by the local indie-game scene)
Match expertise to your stack. For example, if you’re building on AWS Lambda, look for certified partners. Then you can follow these:
- Review Clutch case studies. Prior success in your industry often predicts smoother onboarding.
- Assess communication style. Schedule a technical deep-dive; strong agencies explain trade-offs clearly and propose realistic timelines.
- Check cultural fit. Seattle shops range from corporate consultancies to scrappy agile squads—pick the environment that aligns with your team culture.
Watch out for these red flags when hiring a Seattle software firm:
- One-size-fits-all proposals that ignore your existing architecture
- Limited local presence (e.g., sales office in Seattle but dev team entirely offshore without overlap hours)
- Inflexible IP terms that don’t assign code ownership to your company
- Over-promising senior talent but staffing junior engineers without notice If any of these appear during discovery, continue vetting other Seattle software development services.
Get matched with the 5 best-fit agencies for your project—in 4 minutes or less.