Top Blockchain Companies & Developers in Seattle
3 Leaders 15 Contenders
21 Companies
List of the Top Seattle Blockchain Development Companies
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$5,000+$50 - $99 / hr10 - 49Serves Seattle, WAServices provided
100% BlockchainSee all 14 projectsRedDuck is a Blockchain Development company specializing in Blockchain Technology, Smart Contract Development, and Cryptocurrency Development. Across multiple reviews, clients consistently commend their technical precision, strategic vision, and timely delivery. Approximately 100% of feedback highlights RedDuck's exceptional project management and responsiveness, while 80% emphasize their ability to handle complex projects and deliver secure, user-friendly solutions.
1 of 1 reviews is 5 starsUnknown avg. project costRead 1 Recent ReviewReviewed 1 time in the past 6 months
In recent reviews, clients have expressed high satisfaction with RedDuck's ability to deliver projects on time and meet specific requirements, such as creating an API interface. Notably, one client highlighted the company's effective communication and value for cost, stating, 'RedDuck was to the point' and found no areas for improvement. Overall, the sentiment reflects a strong confidence in RedDuck's capabilities and professionalism.Was this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
RedDuck consistently receives positive feedback regarding their pricing and value for money. Clients have noted that their competitive rates fit within budgets while delivering high-quality results. For example, the COO of NYM Technologies emphasized their 'good value for the cost,' while the CEO of InvariFi highlighted their 'pricing fit our budget.' Overall, clients express satisfaction with the balance of cost and quality, often remarking on timely deliveries and effective project management.Was this helpful?
More responsive than most other service providers
Get in TouchRedDuck is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.Was this helpful?
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This provider is fluent in 4 languages:
- English
- German
- Ukrainian
- Russian
This provider is available in 37 time zones:
- Colombia Time (COT)
- Near East Time (NET)
- Middle East Time (MET)
- China Taiwan Time (CTT)
- Gulf Standard Time (GST)
- Brazil Eastern Time (BET)
- Greenwich Mean Time (GMT)
- India Standard Time (IST)
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Slashdev
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$5,000+$50 - $99 / hr10 - 49Seattle, WAServices provided
10% Blockchain20% Custom Software Development20% Mobile App Development +4 services20% Web Development10% AI Development10% E-Commerce Development10% IT Staff AugmentationSee all 18 projectsSlashdev is a versatile software development company specializing in web and mobile applications, as well as offering recruitment services for specialized developers. The reviews indicate a high level of satisfaction, with approximately 85% of feedback highlighting their timeliness, effective project management, and flexibility. Clients commend their ability to quickly understand project requirements and deliver quality work, though some suggest improving planning clarity and integrating their management systems.
Reviews mention Exceeds expectations
Clients have consistently reported that Slashdev exceeds expectations in delivering high-quality solutions. For instance, one client highlighted a 50% reduction in onboarding time and a 15% increase in Google reviews due to the effective systems implemented by Slashdev. Another client praised their ability to deliver a working MVP within months, emphasizing their professionalism and quick response times. Overall, clients commend Slashdev for their technical expertise, value for cost, and commitment to exceeding project goals.-
Custom Software Development for Travel Company
5.0 Jun 24, 2022Slashdev was able to deliver beyond expectations. At a fraction of the price of any other vendor, they finished our software solution and helped us navigate building the next stages of our product.
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Web Service & Web App Dev & Design for Storage Solutions Co
5.0 Oct 27, 2025Slashdev's flexibility of thinking and quality of work are commendable. They are strong technical thinkers, have a solid approach to the work, and strive to exceed expectations.
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See All Locations (8)Seattle, WA
1201 3rd Ave
Seattle, WA 981012 - 5
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Review Rating from Clients
5.0/5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
Reviewers in Washington commend Slashdev for their technical skill, professionalism, and cost-effective approach to diverse projects like software teams, web integrations, and internal tools. They value the company's quick communication and commitment to delivering high-quality results.Read Local ReviewsWas this helpful?
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$10,000+$50 - $99 / hr50 - 249Kirkland, WA
Services provided
10% Blockchain15% AI Development15% Generative AI +6 services10% AI Consulting10% Custom Software Development10% IT Managed Services10% IT Staff Augmentation10% Mobile App Development10% Web DevelopmentSee all 12 projectsAccelOne is a software development company specializing in web and mobile app development, frontend engineering, and software augmentation. The reviews demonstrate overwhelmingly positive feedback, with about 90% highlighting their expertise in handling complex projects, responsive communication, and seamless integration with client teams. Clients frequently praise their competitive pricing, high-quality deliverables, and strong project management skills, with over 70% acknowledging their ability to adapt to changing needs and deliver on tight deadlines.
Industry Experience
AccelOne has garnered positive feedback across various industries, including cybersecurity, gaming, fintech, information technology, media, and consumer products. Clients commend their expertise in web development, software engineering, and QA testing. In cybersecurity and fintech, they demonstrated reliability and responsiveness, while in gaming, their staffing solutions were highlighted. Overall, clients emphasize AccelOne’s strong communication, adaptability, and commitment to quality, making them a suitable partner for firms seeking technical expertise in software development and project management.
Read All ReviewsSelect Industry to see insights
IT Services Software Gaming Wellness & Fitness Information technology Business services Publishing Media Consumer ProductsWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Clients consistently commend AccelOne for their competitive pricing and strong value for money. One client noted, 'Their rates were very competitive, and they were a great partner to us,' highlighting their affordability without compromising quality. Another client emphasized the 'good value for cost' in their selection process. Overall, feedback indicates that clients feel they receive top-tier service and expertise at a reasonable price, making AccelOne a cost-effective choice for software development projects.Was this helpful?
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Review Rating from Clients
5.0/5.0
Quality
4.9
Schedule
4.8
Cost
4.8
Willing to Refer
5.0
Reviewers in Seattle commend AccelOne for their technical skill, especially in software engineering, app development, and system integration. They appreciate their transparent communication, project discipline, and ability to deliver reliable solutions that meet or exceed expectations in fast-paced, innovative environments.Read Local ReviewsWas this helpful?
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$10,000+$25 - $49 / hr50 - 249Bellevue, WA
Services provided
10% Blockchain25% Custom Software Development20% IT Managed Services +4 services15% CRM Consulting and SI10% BI & Big Data Consulting & SI10% 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.
Industry Experience
Virtuosity Consulting has received positive feedback primarily from the software industry, highlighting their expertise in managing complex release processes and providing skilled program managers. Clients commend their ability to adapt to project demands, enhance efficiency, and deliver quality outcomes. Their proactive approach to ownership and process improvement stands out, leading to successful collaborations. Overall, the sentiment is highly favorable, indicating strong suitability for software development projects, particularly those requiring meticulous process management and flexible resource allocation.
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SoftwareWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Clients have consistently praised Virtuosity Consulting for their cost-effectiveness and high value for money. One client highlighted their decision to enter a multi-year contract based on favorable pricing and the quality of candidates provided. Additionally, the agency demonstrated flexibility in budget adjustments, successfully adapting to changing project demands while maintaining quality and efficiency, which further solidified their reputation as a valuable partner.Was this helpful?
Review Rating from Clients
5.0/5.0
Quality
4.5
Schedule
5.0
Cost
4.5
Willing to Refer
5.0
Clients in Redmond emphasize Virtuosity Consulting's strong project ownership, seamless collaboration, and ability to adapt to changing needs. They value their proactive suggestions, tooling innovations, and the extension of their team for complex, confidential software releases.Read Local ReviewsWas this helpful?
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UndisclosedUndisclosed2 - 9Seattle, WA
Services provided
70% Blockchain30% Custom Software DevelopmentIn Seattle, Washington, Niftmint is a small Blockchain company. Their services include Blockchain and Custom Software Development.
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UndisclosedUndisclosed2 - 9Seattle, WA
Services provided
80% Blockchain20% Business ConsultingNew Alchemy is a Blockchain company launched in 2016. The agency focuses on Blockchain and Business Consulting.
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UndisclosedUndisclosed2 - 9Seattle, WA
Services provided
100% BlockchainMirai Blockchain Group, a Blockchain company, was launched in 2021. In Seattle, Washington, the team specializes in Blockchain.
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$10,000+$25 - $49 / hr250 - 999Bellevue, WA
Services provided
10% Blockchain10% AI Development10% Custom Software Development +7 services10% Cybersecurity10% Digital Engineering10% IT Managed Services10% IT Strategy Consulting10% IoT Development10% Robotics Process Automation10% UX/UI DesignSee all 1 projectsFuturism Technologies offers digital marketing enhancements, eCommerce optimization, and IoT cybersecurity services. Client reviews highlight their effective solutions in increasing website traffic and sales, combined with robust security measures. Futurism Technologies is noted for their expertise, proactive communication, and timely project management, ensuring smooth and productive collaborations.
See All Locations (3)Bellevue, WA
1400 112th Avenue Southeast
Bellevue, WA 98004201 - 250
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UndisclosedUndisclosed10 - 49Seattle, WA
Services provided
50% Blockchain50% AI DevelopmentLook Lateral Inc., a small AI company and Blockchain company, is located in Milano, Italy and Seattle, Washington. The team specializes in Artificial Intelligence and Blockchain.
Read moreSee All Locations (2)Seattle, WA
1200 Westlake Ave. N. Ste 802
Seattle, WA 981092 - 5
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$1,000+$100 - $149 / hr10 - 49Bellevue, WA
Services provided
10% Blockchain25% AI Development20% Cloud Consulting & SI +3 services20% Cybersecurity15% BI & Big Data Consulting & SI10% CRM Consulting and SIOmni212 is an AI firm. The Bellevue, Washington-based team focuses on Artificial Intelligence and cloud consulting & SI.
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$5,000+$100 - $149 / hr2 - 9Seattle, WA
Services provided
10% Blockchain20% Custom Software Development20% Enterprise App Modernization +3 services20% Web Development15% E-Commerce Development15% Mobile App DevelopmentV37 is a custom software development company located in Seattle, Washington. Launched in 2022, the team specializes in Custom Software Development and Web Development.
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UndisclosedUndisclosed2 - 9Seattle, WA
Services provided
20% Blockchain20% AR/VR Development20% Branding +2 services20% Content Marketing20% Generative AIBranding firm TF Labs was established in 2017. The team specializes in Branding and Content Marketing and is headquartered in Seattle, Washington.
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$25,000+$100 - $149 / hr10 - 49Puyallup, WA
Services provided
10% Blockchain30% Mobile App Development15% AI Development +3 services15% Custom Software Development15% UX/UI Design15% Web DevelopmentSee all 9 projectsDevscale is a software development company specializing in web development, custom software solutions, and product design. The company's reviews reflect a high level of client satisfaction, with approximately 90% of feedback being positive, highlighting their reliable project management and timely delivery. Clients frequently commend Devscale for their innovative solutions and personable approach, with 85% noting the company’s commitment to project ownership and collaboration.
Industry Experience
Devscale has garnered positive feedback across various industries, including Education, Advertising & Marketing, SaaS, Legal, and Healthcare. Clients commend their expertise in user experience design, technical development, and project management, highlighting strong communication and attention to detail. The overall sentiment is favorable, with clients noting Devscale's ability to innovate and enhance product functionality. This makes them a strong fit for projects in tech-driven sectors where collaboration and quality are paramount.
Read All ReviewsSelect Industry to see insights
Education Advertising & marketing Software Legal Retail IT Services HealthcareWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Client feedback indicates that Devscale offers strong value for money, with many praising their ability to deliver high-quality work on time and within budget. One client noted, 'The real cost of a vendor isn’t what you pay for them, but the combination of price, time, and quality,' highlighting Devscale's excellence in all three areas. Another client mentioned their flexibility with payments, which is particularly beneficial for startups. Overall, sentiment is overwhelmingly positive regarding the company's pricing and value.Was this helpful?
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See All Locations (9)Puyallup, WA
3103 31st Avenue Southeast
Puyallup, WA 983741
847-260-7174
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$1,000+< $25 / hr50 - 249Seattle, WA
Services provided
10% Blockchain15% Low/No Code Development10% Custom Software Development +30 services10% IT Staff Augmentation10% Mobile App Development10% Web Development5% AI Development5% IT Managed Services1% AI Consulting1% API Development1% AR/VR Development1% Application Management & Support1% Application Testing1% CRM Consulting and SI1% Cloud Consulting & SI1% Cybersecurity1% DevOps Managed Services1% Digital Strategy1% E-Commerce Development1% ECM Consulting and SI1% ERP Consulting and SI1% Email Marketing1% Employer of Record (EOR) Services1% Enterprise App Modernization1% Generative AI1% HR Outsourcing1% IT Strategy Consulting1% IoT Development1% Microservices Architecture Services1% Mobile & App Marketing1% Robotics Process Automation1% Wearable App Development1% Web DesignSee all 5 projectsVinova is a versatile IT service provider specializing in mobile and web application development, IT support, and software development resources. They receive consistently positive feedback for their professional support, proactiveness, and effective communication, with more than 80% of reviews highlighting their project management skills and flexibility. Clients appreciate their ability to meet deadlines and tailor solutions to specific needs, with only minor suggestions for clearer scope definition.
Industry Experience
Vinova has demonstrated expertise across diverse industries, including Financial Services, Education, Business Services, and Information Technology. Clients commend their strong project management, responsiveness, and ability to understand client needs, leading to significant operational improvements. In Financial Services, they excelled in app development, while in Education, they provided reliable IT support. Their work in Business Services focused on system upgrades, enhancing productivity, and in Information Technology, they supported strategic market entry initiatives. Overall, Vinova is well-suited for clients seeking tailored technology solutions across these sectors.
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Business services IT Services Information technology Education Financial servicesWas this helpful?
Average Project Cost Breakdown
Read All ReviewsWhat Clients Have Said
Clients consistently commend Vinova for providing good value for the cost of their services. One client noted their 'good value for cost' and high engagement levels, while another highlighted Vinova's ability to meet project requirements at reasonable prices. Overall, feedback indicates that Vinova delivers quality results in a timely manner, making them a cost-effective choice for various development projects.Was this helpful?
More responsive than most other service providers
Get in TouchVinova is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.Was this helpful?
See All Locations (5)Seattle, WA
4751 12th Avenue Northeast
Seattle, WA 9810516 - 20
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UndisclosedUndisclosed10 - 49Bellevue, WA
Services provided
10% Blockchain20% Business Consulting20% Cloud Consulting & SI +5 services10% AI Development10% Custom Software Development10% IoT Development10% Mobile App Development10% Web DevelopmentLeszynski Group, Inc. Is a cloud consulting & SI company. Launched in 1990, the team specializes in cloud consulting & SI and Business Consulting.
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UndisclosedUndisclosed10 - 49Seattle, WA
Services provided
10% Blockchain10% API Development10% Cloud Consulting & SI +7 services10% Custom Software Development10% DevOps Managed Services10% E-Commerce Development10% ECM Consulting and SI10% ERP Consulting and SI10% Enterprise App Modernization10% IoT DevelopmentCloud consulting & SI company Marici Technology Solutions provides cloud consulting & SI and ECM consulting and SI. They are headquartered in Seattle, Washington.
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UndisclosedUndisclosed2 - 9Seattle, WA
Services provided
10% Blockchain20% Blockchain Marketing20% Pay Per Click +4 services20% Search Engine Optimization10% Content Marketing10% Corporate Training & Coaching10% Social Media MarketingEstablished in 2022, Dom Cat Digital is a small SEO services firm. Their team specializes in Search Engine Optimization and Pay Per Click.
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UndisclosedUndisclosed10 - 49Federal Way, WA
Services provided
10% Blockchain10% AI Consulting10% AR/VR Development +7 services10% CRM Consulting and SI10% Cloud Consulting & SI10% Custom Software Development10% ERP Consulting and SI10% IT Managed Services10% IT Staff Augmentation10% UX/UI DesignKarma Consulting, Inc. Is an UX design agency. They are in Federal Way, Washington. Their team provides UX/UI Design and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49Seattle, WA
Services provided
100% BlockchainFounded in 2018, Transparent Path is a Blockchain company. The company focuses on Blockchain, and is small.
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UndisclosedUndisclosed50 - 249Bellevue, WA
Services provided
50% Blockchain50% AI DevelopmentCore Scientific, an artificial intelligence development company and Blockchain company, offer Artificial Intelligence and Blockchain. They were established in 2017.
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UndisclosedUndisclosed10 - 49Seattle, WA
Services provided
50% Blockchain50% IoT DevelopmentAtonomi is a Blockchain and IoT development company. They are in Seattle, Washington and have small team. Their services include Blockchain and IoT development.
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UndisclosedUndisclosed10 - 49Bellevue, WA
Services provided
20% Blockchain20% Custom Software Development20% E-Commerce Development +2 services20% Mobile App Development20% Web DevelopmentAbasys Technologies Inc is a software development firm. Located in Bellevue, Washington, the firm was founded in 1987. Their services include Custom Software Development and Blockchain.
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Ability to Deliver considers three criteria:
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List of the Top 3 Seattle Blockchain Development Companies
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$5,000+$50 - $99 / hr10 - 49Seattle, WA
Ability to deliver
35.3/40.016.8/20 Reviews10/10 Clients & Experience8.5/10 Market PresenceService focus
10% Blockchain90% 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% Blockchain90% 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
10% Blockchain90% Other -
UndisclosedUndisclosed2 - 9Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
70% Blockchain30% Other -
UndisclosedUndisclosed2 - 9Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
80% Blockchain20% Other -
UndisclosedUndisclosed2 - 9Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
100% Blockchain -
$10,000+$25 - $49 / hr250 - 999Bellevue, WA
Ability to deliver
5.6/40.00/20 Reviews0/10 Clients & Experience5.6/10 Market PresenceService focus
10% Blockchain90% Other -
UndisclosedUndisclosed10 - 49Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
50% Blockchain50% Other -
$1,000+$100 - $149 / hr10 - 49Bellevue, WA
Ability to deliver
5.5/40.00/20 Reviews0/10 Clients & Experience5.5/10 Market PresenceService focus
10% Blockchain90% Other -
$5,000+$100 - $149 / hr2 - 9Seattle, WA
Ability to deliver
4/40.00/20 Reviews0/10 Clients & Experience4/10 Market PresenceService focus
10% Blockchain90% Other -
UndisclosedUndisclosed2 - 9Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
20% Blockchain80% Other -
$25,000+$100 - $149 / hr10 - 49Puyallup, WA
Ability to deliver
31.9/40.016.2/20 Reviews9.8/10 Clients & Experience6/10 Market PresenceService focus
10% Blockchain90% Other -
$1,000+< $25 / hr50 - 249Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
10% Blockchain90% Other -
UndisclosedUndisclosed10 - 49Bellevue, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
10% Blockchain90% Other -
UndisclosedUndisclosed10 - 49Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
10% Blockchain90% Other -
UndisclosedUndisclosed2 - 9Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
10% Blockchain90% Other -
UndisclosedUndisclosed10 - 49Federal Way, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
10% Blockchain90% Other -
UndisclosedUndisclosed10 - 49Seattle, WA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
100% Blockchain
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