Top 100 JavaScript Development Companies in San Francisco

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Top 100 JavaScript Development Companies in San Francisco

February 2023

Looking for a top JavaScript developer in San Francisco?

If you're hiring a JavaScript developer to help you build or update a website that's responsive and interactive, consider the pros and cons of JavaScript as a programming language. Advantages include its speed because it's executed on the client-side; reduction in server load; and diverse functionality. 

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List of the Best San Francisco JavaScript Developers

  • 1
    • $25,000+
    • 1,000 - 9,999 employees
    • San Francisco, CA

    Headquartered in New York, iTechArt is a custom software development company with additional offices in Marietta, Ga. and Iselin, N.J. Since 2002, iTechArt has helped startups and fast-growing tech companies fill in their talent gap and create robust web and mobile solutions that users love. To date, iTechArt’s talent pool includes 3500+ engineers with experience in all of the latest technologies.

    Clients

    • ClassPass
    • ZEFR
    • Gain Capital (forex.com)
    • Merkle

    Industries

    Notable Project

    iTechArt assisted with the development of a flagship mobile app (iOS and Android), allocating a specialized resource for each platform version. The team now provides QA testing and updates as needed. 

    "iTechArt can scale with us as we grow, and they can do it fast."

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  • 2
    • Scheduling

      4.7
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • San Francisco, CA

    Founded in 2018, Together is a creative agency. Their team of around 10 employees is based in London. They focus on web development and design and branding.

    Clients

    • Mosaic
    • SeedLegals
    • Amazon
    • Coast

    Industries

    Notable Project

    A financial services company hired Together to provide web development. Their efforts have also included branding tasks, like marketing strategy, color schemes, and copywriting.

    "I genuinely think they're the only design brand I'd recommend."

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  • 3
    • Scheduling

      5.0
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    VT Labs is a full-cycle custom software development company, founded in 2016 in Tallinn, Estonia. They have about 18 employees who serve their clients globally. They provide e-commerce web development, product design, QA, and technology advisory services. Their greatest strengths are Ruby on Rails, headless solutions, and e-commerce web development. They keep scalability a priority, using a headless architecture with Shopify Plus.

    Clients

    • Rokoko
    • Ten Thousand
    • Vesta Sleep
    • JS Dental Lab

    Industries

    Notable Project

    VT Labs developed a team sales website for an athletic wear brand. The platform would simplify wholesale orders while featuring complicated backend needs on the client's Shopify store.

    "The communication was fast and efficient and the team was a pleasure to work with."

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  • 4
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.7
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    AirDev is a San Francisco based software development company. They were founded in 2015 and have a team of 11 employees who specialize in the custom software, web, mobile app development. 

    Clients

    • HP
    • Lenovo
    • CVS
    • Chevron

    Industries

    Notable Project

    AirDev developed a prototype for an interactive platform, from planning to rollout. They made changes based on user feedback and the engagement is currently in support.

    "They work as a trusted partner instead of a third-party vendor."

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  • 5
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • San Francisco, CA

    Founded in 2012, SF AppWorks is a digital agency that produces innovative technologies for mainly midmarket companies. Based in San Francisco, their team of 50+ specializes in web development, mobile app development, UX/UI design, and custom software development. 

    Clients

    • West Elm
    • AARP
    • Georgetown
    • J Crew

    Industries

    Notable Project

    SF AppWorks provided ongoing development services for a nonprofit organization. The team worked closely throughout the years to deliver web and mobile applications. They provided testing services as well. 

    "SF AppWorks came up with good solutions, taking responsibility for their work."

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  • 6
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $100,000+
    • 50 - 249 employees
    • San Francisco, CA

    ArcTouch was founded in 2008 and has offices in San Francisco, Calif., New York, and Florianópolis, Brazil. They excel at app development, blockchain, and UX/UI design. They guide their enterprise clients through the app building process by defining a strategy for the best user experience, planning the visual design, developing and testing the prototype, and ensuring optimization and growth.

    Industries

    Notable Project

    ArcTouch developed an app for business and aviation groups, with the goal of allowing salespeople to update information while in the field. They also built an iPad app.

    "ArcTouch has excellent design skills, were always on time, never missed a deadline."

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  • 7
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.6
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • San Francisco, CA

    Cylogy Inc. Is a website development firm. They are located in San Francisco, California and have a small team that provides web development, application management & support, digital strategy, IT strategy consulting, and more. The company was founded in 2001.

    Industries

    Notable Project

    Cylogy Inc. provides technology implementation services for a media organization. They also serve as the company’s outsourced IT team that handles their updates, upgrades, and issue troubleshooting needs. 

    “They do most of the heavy lifting for us, and I don’t have any complaints about them.”

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  • 8
    • Scheduling

      4.7
    • Quality

      4.8
    • Cost

      4.4
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 1,000 - 9,999 employees
    • San Francisco, CA

    Toptal is a private network of freelance technologists and designers. With more than 2000 freelance workers in its exclusive community, Toptal can be instrumental in finding the right freelance partner for development projects. The community includes developers for any platform, finance experts, and designers of both visual material and graphic interfaces. Because of its screening process, Toptal combines the reliability and expertise of an agency with the flexibility and affordability of freelance work.

    Clients

    • Toptal clients include J.P. Morgan
    • Zendesk
    • Artsy
    • IDEO

    Industries

    Notable Project

    Toptal provided UX/UI design services for an email domain service company. They vetted and provided a candidate to work on the project and deliver a better look and feel for the client’s product.

    “Their vetting process was outstanding. Every candidate they sent was highly qualified to do the job.”

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  • 9
    • Scheduling

      3.9
    • Quality

      4.0
    • Cost

      4.1
    • NPS

      4.1
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Berkeley, CA

    Founded in 2016, Crowdbotics is a development company based in Berkeley, Calif. They work with businesses of all sizes in the business services, consumer products, and healthcare fields. 

    Clients

    • Stripe
    • Copper CRM
    • Aura
    • Airbus

    Industries

    Notable Project

    Crowdbotics provides app development services to an IT company. Their work involves taking mockups and bringing them to life. The team has created a geofencing system and PIN code login tech for the client.

    "They have the trifecta of being cost-effective, good, and fast."

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  • 10
    • $50,000+
    • 50 - 249 employees
    • San Francisco, CA

    Mayven is a San Francisco based software design and development company. They were founded in 2015 and have a team of 25 employees. They specialize in web, custom software, and eCommerce development for enterprise and midmarket clients.

    Clients

    • Andreesen Horowitz
    • Segment
    • Lightspeed Venture Partners
    • Pachama

    Industries

    Notable Project

    Mayven redesigned a website and is currently building a Native Android app from the ground up. They are managing all the development while using the finished design files that were provided to them.

    “They deliver above and beyond expectations. … I'd definitely recommend them.”

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  • 11
    • $10,000+
    • 2 - 9 employees
    • Oakland, CA

    State Creative is a web design and development company located in Oakland, CA. Founded in 2000, State Creative's team of nearly 10 employees also offer e-commerce development. They serve small and mid-market businesses in the business services, finance, and consumer products industries.

    Clients

    • MarsVenus
    • Pinnacle Claims Management
    • Sakura of America
    • Sakura of America

    Industries

    Notable Project

    State Creative provided web design and development services for marketing and branding purposes. They developed two websites designed to reach a broad and varied target audience.

    "They're very competent and very good at what they do."

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  • 12
    • $100,000+
    • 50 - 249 employees
    • San Francisco, CA

    Kanopi Studios is a strategy, design, and development agency based in San Francisco. Founded in 2010, the team of 33 specializes in web development, web design, and UX/UI design. They focus on business services, non-profits, and consumer products and services.

     

    Clients

    • Stanford University
    • Cohen Veterans Network
    • University of California
    • San Francisco Airport

    Industries

    Notable Project

    Kanopi Studios handled design and development for a new website using UX wireframes, mood boards, and a pattern library. They also migrated existing content and introduced geolocation and scheduling features.

    "Building a website is never easy, but working with people you both respect and like makes a huge difference." 

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  • 13
    • $25,000+
    • 10 - 49 employees
    • Sausalito, CA

    Watson Creative is a research-based creative studio located in Portland and founded in 2008. They comprise 27 employees specializing in digital strategy and design and brand storytelling for various companies, from startups to venture capitalists, in a number of industries, including IT, lifestyle, finance, the arts, legal, dental, and consumer products. Services include brand strategy and DNA, website design, UX/UI, graphic design, content marketing, photography, video, and e-commerce.

    Clients

    • Nike
    • KingPins
    • Umpqua Bank
    • New York Yankees

    Industries

    Notable Project

    Watson Creative provided video production services along with graphic design with the aim of enhancing corporate and product brand identity. The content was distributed at trade shows along with other channels.

    "Their spirit to do it right and their passion for branding stood out."

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  • 14
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $100,000+
    • 1,000 - 9,999 employees
    • San Francisco, CA

    Headquartered in San Francisco, Wizeline is a global technology services provider with delivery centers in Mexico, Colombia, Spain, and Vietnam. Since its founding in 2014, Wizeline has grown to over 1,300 employees specializing in product/platform development, UX design, data & AI, cloud & DevOps, and product evolution services.

    Clients

    • Fitz Frames
    • AirAsia
    • Arc XP
    • Car Rental Company (CRC)

    Notable Project

    Wizeline is working to maintain and improve an entertainment company’s content management system in an ongoing partnership. The team works with React and Node.js, while assisting with UI and monitoring tools.

    "They do a great job, take pride in their work, and never deliver unfinished products."

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  • 16
    • Scheduling

      4.6
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • Oakland, CA

    Kalamuna is a web development and design agency founded in 2012. They have 15 employees based in their Oakland, Calif. office. The bulk of their services focus on full-service web development, from visual design to server-side operations. Kalamuna also offers custom software development and digital strategy consulting.

    Clients

    • American Foundation for the Blind
    • Fair Trade USA
    • Smithsonian Institution
    • Environmental Defense Fund

    Industries

    Notable Project

    Kalamuna redesigned a website and migrated it from Drupal 6 to 7, and continue to provide maintenance and updates. Added features include a comments section, speaker registration, and new program display.

    "They have really awesome folks on their team."

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  • 17
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • San Francisco, CA

    Launched in 2020, Apex Lab is a software development company. Their small team is based in Tallinn, Estonia and San Francisco, California. Their team offers custom software development, mobile app development, web development, and enterprise app modernization.

    Notable Project

    Apex Lab was hired to develop a web and mobile app that offers online medical consultation services. They migrated its current platform to Twilio, resolved technical issues, and implemented various features.

    "Their team was always ready to help, and they worked in a very transparent way."

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  • 18
    • $50,000+
    • 10 - 49 employees
    • San Rafael, CA

    A development company founded in 2005, Infinite Red, Inc. is based in Vancouver, Wash. Their team of fewer than 50 works in additional offices in San Rafael, Calif., servicing small to midmarket businesses. They offer web and mobile app development as well as web and UX/UI design services.

    Clients

    • Microsoft
    • Amazon
    • SquareSpace
    • BlueJeans

    Notable Project

    Infinite Red, Inc. provided full stack development services for an advertising firm. They rebuilt a site and developed sites for third-party clients from scratch as well as integrated the products with a CMS.

    "They’re great developers but also the way that they work with their clients sets them apart."

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  • 19
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.7
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 50 - 249 employees
    • San Francisco, CA
    Scrumteams is an Elk Grove, California-based IT staff augmentation company. The midsize firm was established in 2020. Their team provides IT staff augmentation, web design, ux/ui design, IT strategy consulting, and more.

    Clients

    • KPMG
    • RingCentral
    • Aviatrix
    • State University of New York (SUNY)

    Industries

    Notable Project

    Scrumteams has provided staff augmentation services for a digital advertising and media company. They've developed profile reviews, interviews, and screenings and assisted with implementing the designs.

    "The team's growth-driven design approach is a remarkable feature in the workflow."

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  • 20
    • $50,000+
    • 10 - 49 employees
    • San Francisco, CA

    Dayspring Technologies is a custom software and web development firm founded in 1997. They have just under 30 employees based in their San Francisco office. Much of their work focuses on custom software development for in-house platforms, but they also build client-side web apps, user interfaces, and e-commerce platforms.

    Clients

    • American Red Cross
    • BSN Sports
    • Fund for Shared Insight
    • Golden State Warriors

    Industries

    Notable Project

    Dayspring Partners (formerly Dayspring Technologies) built a database based off of PHP, including the frontend design work and some backend work. The database has a web interface that manages opinions about the articles it stores. The work is ongoing.

    “They’re responsive, fast, and very detail-oriented.”

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  • 21
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • San Francisco, CA
    QClay Design is a web design company. Headquartered in , California, their small team focuses on web design, mobile app development, digital strategy, mobile & app marketing, and more. The company was established in 2019.

    Clients

    • Google
    • SoftBank
    • a16z
    • Airbnb

    Industries

    Notable Project

    QClay redesigned a web app, chrome extension, and SaaS dashboard for a WEB3 infrastructure platform. They made multiple versions of what they asked for, listened to the client's feedback, then made iterations.

    "QClay's instincts and adaptation to different styles and requests were impressive."

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  • 22
    • Scheduling

      4.7
    • Quality

      4.8
    • Cost

      4.6
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $100,000+
    • 10 - 49 employees
    • San Francisco, CA

    This California-based software company has strong expertise in web and mobile app development. The team of less than 50 has worked in various industries, from fitness to healthcare – they’ve done it all.

    Clients

    • Google
    • Nike
    • Adobe
    • Twilio

    Industries

    Notable Project

    Impekable supported development of IoT security solutions. They performed market research, provided front- and back-end development for various prototypes, and revamped a corporate website.

    "Impekable has helped us in every possible way."

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  • 23
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 2 - 9 employees
    • Oakland, CA

    HyperArts is a website design and development company based in San Francisco, CA. HyperArts' intimate team of nearly 10 people specializes in website design, development, and maintenance, as well as UX/UI design for WordPress and Drupal sites. They mainly serve small business clients.

    Clients

    • Crossroads Trading Co.
    • Autodesk
    • Eventbrite
    • Crossroads Trading Co.

    Industries

    Notable Project

    HyperArts developed a WordPress site and complex backend database for a hospital quality and patient safety consultancy. The database gathers content from several sources to create a compendium on the site.

    “They came through for us every time and were excellent at meeting last-minute deadlines.”

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  • 24
    • $5,000+
    • 10 - 49 employees
    • San Francisco, CA

    Thomas Digital Web Design is a web design agency based in San Francisco. The agency, founded in 2010, is a team of less than ten that provides web design, web development, and SEO services to small and midmarket companies.

    Clients

    • California Olive Ranch
    • Zircon Tools
    • Association of Montessori International
    • Cloudleaf

    Industries

    Notable Project

    Thomas Digital Web Design refreshed a PR firm's website design from scratch. The site is optimized for mobile display, and the team even offered some SEO tips.

    "They worked really hard to ensure that I was very happy with everyone and worked through all of my questions."

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  • 25
    • $10,000+
    • 10 - 49 employees
    • San Francisco, CA

    Blackstone Studio is a custom software development firm. Their small team is located in San Francisco, California and Guadalajara, Mexico and focuses on custom software development. The firm was launched in 2019.

    Industries

    Notable Project

    Blackstone Studio developed an MVP that could speed up an ad company's billing and invoicing processes in an AWS-based environment. The key deliverables included a codebase, diagrams, and project documentation. 

    "Their work quality was excellent; it exceeded our expectations."

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  • 26
    • $5,000+
    • 2 - 9 employees
    • San Mateo, CA

    Cider is a software development company located in San Francisco. Founded in 2015, their 5 employees provide software development, marketing, and web design services to ecommerce clients. 

    Clients

    • HP
    • Procter & Gamble
    • Nike
    • and other. Case studies can be found here: https://bit.ly/2VY1XiJ .

    Industries

    Notable Project

    Cider implements a variety of backend enhancements for an e-commerce system, including SEO and a migration onto Magento 2. 

    "Their Magento migration rebuilt the site from the ground up, and the page is much faster."

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  • 27
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.3
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • San Francisco, CA

    Grio is a software consulting firm based in San Francisco, Calif, that was established in 2008. Their team of 50 employees offers web development, mobile app development, and UX/UI design services.

    Clients

    • Rivals.com
    • Fitbit
    • Texture
    • Neustar

    Industries

    Notable Project

    Grio rebuilt and redesigned an existing web subscription service. They optimized payment and tiered access, added third-party integrations, and continue to develop updates.

    “Their adaptability and attention to detail helped make our product the best it can be.”

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  • 28
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • Orinda, CA

    Based out of Orinda, CA with satellite offices in India and Croatia, Daxima is a software development company. The team of more than 50 employees has been in business since 2003. They provide web, software, and mobile app development for clients around the world.

    Clients

    • T-Mobile US
    • Cisco Systems
    • Savi Technology
    • Berry Appleman & Leiden

    Industries

    Notable Project

    Built from a PowerPoint presentation, Daxima created a web based admin solution for business owners extensive reporting functionality. They implemented data tracking, a simple UI for mobile, and organized the process. 

    "I don’t do this type of stuff very often, but I feel like Daxima is exceptional."

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  • 29
    • Scheduling

      4.5
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 250 - 999 employees
    • San Francisco, CA

    Midsize IT staff augmentation company Code Power, is in Guaynabo, Puerto Rico. Their services include IT staff augmentation, custom software development, web development, mobile app development, and more.

    Clients

    • Snappt
    • Juked
    • Build
    • Uber

    Industries

    Notable Project

    Code Power was hired by a marketing company to develop a mobile app for their internal staff. The app allows users to schedule daily and weekly calendars for meetings, daily rituals, and tasks.

    "They are passionate about this tool."

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  • 30
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • Berkeley, CA

    SpaceBus is a Magento development agency with two locations—one in Berkeley, Calif., and one in Dnipro, Ukraine. Since 2019, their team of 10+ employees provides Magento-based e-commerce development and web development to mid-market and enterprise-level clients.

    Clients

    • Yamaha
    • Yamaha MusicSoft
    • Whitecap
    • 5Below

    Industries

    Notable Project

    An IT outsourcing company partnered with SpaceBus for website development, focusing on improving the front end. 

    "The developer we chose for the project demonstrated efficiency with success."

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