# Top Mechanical Engineering Firms in San Francisco Recommended Mechanical Engineering companies in San Francisco include Delve, Unbox Product Design, Intelassist, Speck Design, Lewis Bass International Engineering Services, Advanced Engineering Services, F3 & Associates, KYA Designs. We verify reviews and evaluate companies so you can choose with confidence. We may earn a fee for some placements. [Learn how Clutch ensures trust](#why-trust-clutch) ## List of the Best Top Mechanical Engineering Firms in San Francisco Ratings Updated: Jul 23, 2026 ### [Delve](https://clutch.co/profile/delve-2) #### 4.9 out of 5 star rating (30 reviews) - $50,000+ minimum project size - 50 - 249 employees - San Francisco, CA #### Services Provided - Allocation of Expertise by Percentage - 30% UX/UI Design - 40% Engineering - 30% Product Design #### Company description Delve is a full-service design firm specializing in user experience (UX) design and human-centered design principles. Reviews indicate a strong emphasis on effective project management and timely delivery. Clients consistently praise Delve for exceeding user expectations and providing comprehensive, end-to-end design services. Notably, 100% of reviewers expressed satisfaction with Delve's project completion and management capabilities. [Visit Website](https://www.delve.com/digital-consumer-wellness?utm_source=clutch.co&utm_medium=referral&utm_campaign=us-agencies-ui-ux?utm_source=clutch.co&utm_medium=referral&utm_campaign=clutchprofile) #### 4.5 out of 5.0 rating for cost What Clients Have Said Clients have consistently praised Delve for providing excellent value for money, often highlighting that their pricing aligns well with budgetary expectations. One client noted, 'Pricing fit our budget' and described Delve as delivering 'good value for cost.' Another emphasized the company's ability to deliver high-quality results within set financial parameters, stating that they received 'tremendous value' for their investment. Overall, the sentiment across reviews indicates satisfaction with the cost-effectiveness and quality of services provided by Delve. [Read All Reviews](https://clutch.co/profile/delve-2?verified=true#reviews) - $50,000 to $199,999 (15 reviews) - $10,000 to $49,000 (4 reviews) - $200,000 to $999,999 (4 reviews) - Less than $10,000 (1 reviews) #### Completed projects in 14 cities - Jacksonville, Florida (1 projects) - Baltimore, Maryland (1 projects) - Winston-Salem, North Carolina (1 projects) - Northbrook, Illinois (1 projects) - Manhattan, New York (1 projects) - New York City, New York (3 projects) - Alameda, California (1 projects) - Los Angeles, California (1 projects) - Mountain View, California (1 projects) - Boston, Massachusetts (15 projects) - Gloucester, Massachusetts (1 projects) - Waltham, Massachusetts (1 projects) - Rowley, Massachusetts (1 projects) - Wellesley Hills, Massachusetts (1 projects) This provider is available in 1 time zone: - Eastern Standard Time (EST) This provider is fluent in 1 language: - English [View Reviews](https://clutch.co/profile/delve-2?verified=true#reviews) #### 9% of employees work in San Francisco office San Francisco, CA 2225 3rd Street 10 - 15 employees [See All Locations (4)](https://clutch.co/profile/delve-2#location) #### 2 reviews from clients near San Francisco Review Rating from Clients - 5.0 out of 5.0 - Overall: 4.8 - Quality: 4.8 - Schedule: 4.5 - Cost: 4.5 - Willing to Refer: 4.8 Clients in the area praise Delve for their deep technical expertise and ability to handle complex, enterprise-level projects, including UI redesigns and integrations. They emphasize the provider's professionalism, project management skills, and dedication to delivering high-quality, modern solutions on tight timelines. [Read Local Reviews](https://clutch.co/profile/delve-2?verified=true#reviews) --- ### [Unbox Product Design](https://clutch.co/profile/unbox-product-design) - $5,000+ minimum project size - $50 - $99 average hourly rate - 2 - 9 employees - San Francisco, CA #### Services Provided - Allocation of Expertise by Percentage - 10% UX/UI Design - 10% Branding - 20% Engineering - 10% Graphic Design - 10% Packaging Design - 40% Product Design #### Company description Small Product Design company Unbox Product Design, is headquartered in San Francisco, California. Their services include Product Design and Engineering. [Visit Website](https://www.unboxpd.com/) --- ### [Intelassist](https://clutch.co/profile/intelassist) - $10,000+ minimum project size - < $25 average hourly rate - 1,000 - 9,999 employees - South San Francisco, CA #### Services Provided - Allocation of Expertise by Percentage - 20% Accounting - 15% Architectural Design - 15% Back Office Outsourcing - 15% Call Center Services - 15% Customer Service Outsourcing - 10% Engineering - 10% IT Staff Augmentation #### Company description Intelassist is an Accounting company. The company is based in Quezon City, Philippines and South San Francisco, California. Their team specializes in Accounting and Call Center Services. [Visit Website](https://intelassist.com/) #### 1% of employees work in South San Francisco office South San Francisco, CA 24 Vista Court 2 - 5 employees 4158696949 [See All Locations (2)](https://clutch.co/profile/intelassist#location) --- ### [Speck Design](https://clutch.co/profile/speck-design-0) #### 4.2 out of 5 star rating (6 reviews) - $25,000+ minimum project size - $100 - $149 average hourly rate - 10 - 49 employees - San Jose, CA #### Services Provided - Allocation of Expertise by Percentage - 20% UX/UI Design - 20% Engineering - 60% Product Design #### Company description Speck Design is an engineering design company offering technical design services, specifically in the development of hardware systems. Feedback indicates a lack of project management, accountability, and communication, with significant project delays and unmet deliverables. Despite early promise, 100% of reviews highlight dissatisfaction and unresolved issues, particularly with the skipped prototype phase and inadequate technical support. [Visit Website](https://www.speckdesign.com/) #### Innovative Clients have consistently praised Speck Design for their innovative approach to product development. One client noted that Speck provided over a dozen diverse solutions for a desired mechanism of action, highlighting their creativity and industry insight. The firm's leadership was described as genuinely excited about client projects, fostering a collaborative environment that encouraged brainstorming and alternative thinking. Overall, the sentiment reflects a strong appreciation for Speck's innovative strategies and commitment to client success. - Product Design & Advising for Medical Device Startup (5.0/5, Sep 8, 2020): Our early strategy meetings helped our team think more about the journey of a product. Speck provided more than a dozen alternative and diverse approaches to achieving our desired mechanism of action, some of which were quite clever. These were pitched to us in a meeting with sketches, background research, and room for discussion. [Read Full Review](https://clutch.co/go-to-review/speck-design-0/58702) #### Experience in 4 industries Speck Design has received positive feedback across various industries including Medical, Manufacturing, and Information Technology. In the Medical sector, they excelled in engineering design and project management, delivering well-received designs on time. In Manufacturing, they provided effective prototype development and saved significant project time. However, their performance was mixed in Other Industries, with some clients experiencing communication and management issues. Overall, Speck Design is well-regarded for their expertise in product design and development, particularly in Medical and Manufacturing sectors. [Read All Reviews](https://clutch.co/profile/speck-design-0?verified=true#reviews) ##### Manufacturing Experience Speck Design demonstrates significant expertise in the Manufacturing industry, particularly in prototyping for smart home devices. Clients commend their ability to bring concepts to life, showcasing strengths in design execution and problem resolution. Although there are noted opportunities for improvement in deadline adherence and budget management, overall sentiment reflects satisfaction with their contributions, emphasizing time savings and effective communication. Potential clients seeking a capable partner for manufacturing projects may find Speck Design a strong candidate. - 1 review for manufacturing industry - 1 review is 5 stars - $200,000 – $999,999 avg. project cost - Prototype Building for Smart Home Company (5.0/5, Sep 15, 2023): A smart home firm hired Speck Design to develop the prototype for a product. The team also physically built the product based on the client’s provided mock-ups and provided the necessary components.  [Read Full Review](https://clutch.co/go-to-review/speck-design-0/233151) ##### IT Services Experience Speck Design has established a strong reputation in the IT Services industry, particularly in product design and engineering. Clients commend their ability to deliver quality work on aggressive timelines, maintaining core competencies despite personnel changes. They demonstrate effective project management and adaptability, often acting as an extension of clients' teams. Overall, feedback highlights their expertise and successful track record, making them a reliable partner for businesses seeking innovative solutions in product development. - 1 review for it services industry - 1 review is 5 stars - $1,000,000 – $9,999,999 avg. project cost - Product Design & Research for Networking Director (5.0/5, Sep 10, 2020): Speck Design has worked with a network professional on a variety of product design and market research projects over the course of two decades. [Read Full Review](https://clutch.co/go-to-review/speck-design-0/61204) ##### Healthcare Experience Speck Design has received positive feedback from healthcare clients, highlighting their expertise in product design and development for medical devices. Notably, a Chief Product Officer praised Speck for their collaborative approach, industry experience, and thoughtful guidance during the crucial early stages of product development. Clients appreciated Speck's ability to present diverse solutions and optimize existing designs, showcasing their strengths in strategic support and innovation. Overall, the sentiment indicates that Speck Design is a strong partner for healthcare projects, valuing client needs and fostering successful outcomes. - 1 review for healthcare industry - 1 review is 5 stars - Less than $10,000 avg. project cost - Product Design & Advising for Medical Device Startup (5.0/5, Sep 8, 2020): A medical device startup hired Speck Design to help with their product design optimization and development. The team provided design advice to support the transition from a student project to a company. [Read Full Review](https://clutch.co/go-to-review/speck-design-0/58702) ##### Information technology Experience Speck Design demonstrates strong expertise in UI/UX design for the Information Technology sector, as evidenced by a client engagement that resulted in a 25% increase in user engagement and enhanced usability of a sales outreach platform. Clients appreciate their collaborative approach and effective project management, highlighting their ability to deliver tailored solutions. The overall sentiment reflects satisfaction with the team's understanding of project goals and successful execution, making them a viable option for businesses seeking impactful design services in the IT industry. - 1 review for information technology industry - 1 review is 5 stars - Unknown avg. project cost - UX/UI Redesign for AI Sales Outreach Company (5.0/5, Jun 22, 2026): Speck Design provided UX/UI redesign services for an AI sales outreach company. The team was responsible for creating the UX strategy, user flows, wireframing, and visual design for the client's dashboard. [Read Full Review](https://clutch.co/go-to-review/speck-design-0/466584) ##### Consumer Products Experience Speck Design has faced significant challenges in delivering reliable hardware solutions for the Consumer Products industry, particularly in smart lock technology. Client feedback highlights initial confidence in the team's expertise and alignment with company values. However, the project suffered from severe delays, inadequate communication, and a lack of accountability, resulting in an inability to meet the client's technical specifications. Potential clients should weigh these concerns against the company's initial promise and approach before engagement. - 1 review for consumer products industry - $50,000 – $199,999 avg. project cost - Hardware System Dev for Smart-Locking Furniture Company (0.5/5, Oct 27, 2025): Speck Design has been hired by a smart-locking furniture firm to develop a hardware system that would control the locks on their furniture lines. They've handled the electrical, mechanical, and firmware design. [Read Full Review](https://clutch.co/go-to-review/speck-design-0/416063) #### 3.2 out of 5.0 rating for cost What Clients Have Said Clients generally perceive Speck Design as offering good value for money, particularly highlighting their alignment with budgetary constraints. One client noted their pricing fit well within their budget, while another appreciated their transparent pricing and proactive communication. However, a contrasting sentiment emerged from a review where the client experienced significant delays and additional costs, leading to dissatisfaction. Overall, feedback indicates that while Speck Design can provide valuable services, consistency in project management and adherence to timelines is essential for maximizing value. [Read All Reviews](https://clutch.co/profile/speck-design-0?verified=true#reviews) - Less than $10,000 (1 reviews) - $10,000 to $49,000 (1 reviews) - $50,000 to $199,999 (1 reviews) - $200,000 to $999,999 (1 reviews) - $1,000,000 to $9,999,999 (1 reviews) #### Completed projects in 5 cities - Milwaukee, Wisconsin (1 projects) - Palo Alto, California (1 projects) - San Francisco, California (2 projects) - Sunnyvale, California (1 projects) - Newark, California (1 projects) This provider is fluent in 1 language: - English [View Reviews](https://clutch.co/profile/speck-design-0?verified=true#reviews) --- ### [Lewis Bass International Engineering Services](https://clutch.co/profile/lewis-bass-international-engineering-services) - $1,000+ minimum project size - $200 - $300 average hourly rate - 10 - 49 employees - Milpitas, CA #### Services Provided - Allocation of Expertise by Percentage - 100% Engineering #### Company description Lewis Bass International Engineering Services is an Engineering company headquartered in Milpitas, California. Established in 2009, the team focuses on Engineering. [Visit Website](https://www.lewisbass.com) --- ### [Advanced Engineering Services](https://clutch.co/profile/advanced-engineering-services) - 10 - 49 employees - San Jose, CA #### Services Provided - Allocation of Expertise by Percentage - 60% Engineering - 10% Manufacturing Consulting - 30% Product Design #### Company description Advanced Engineering Services is an Engineering company. They are headquartered in San Jose, California. Their team offers Engineering and Product Design. [Visit Website](https://aesgs.com/) --- ### [F3 & Associates](https://clutch.co/profile/f3-associates) - 50 - 249 employees - Benicia, CA #### Services Provided - Allocation of Expertise by Percentage - 80% Commercial Development - 10% Engineering - 10% Product Design #### Company description F3 & Associates is a Commercial Development company in Benicia, California and Carlsbad, California. The team provides Commercial Development and Product Design. [Visit Website](https://f3-inc.com/) --- ### [KYA Designs](https://clutch.co/profile/kya-designs) - 2 - 9 employees - Campbell, CA #### Services Provided - Allocation of Expertise by Percentage - 40% Commercial Development - 60% Engineering #### Company description KYA Designs is a small Engineering company in Campbell, California. The team provides Engineering and Commercial Development. [Visit Website](https://kyadesigns.com/) --- #### Get personalized agency matches based on your project goals. [Find the right fit](https://project.clutch.co/project-brief?source=directory_slide_in_CTA&BPB_adoption_source=directory) ## Why Trust Clutch At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences. Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. 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