Top 100 JavaScript Developers

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Top 100 JavaScript Developers

September 2022

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Developers use JavaScript to make web pages responsive and interactive. JavaScript is a text-based programming language used in web development, typically alongside CSS and HTML. 

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List of the Best JavaScript Development Companies

  • 61
    • Scheduling

      4.6
    • Quality

      4.7
    • Cost

      4.4
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 250 - 999 employees
    • Pleasanton, CA

    Altoros is a software development company in Warsaw, Poland. Founded in 2001, Altoros' team of over 350 employees specializes in cloud consulting, BI & big data consulting, blockchain and artificial intelligence services. 

    Clients

    • Allstate
    • Siemens
    • Huawei
    • Toyota

    Industries

    Notable Project

    Altoros was hired by a software company to build a custom solution that could connect the client's tools with different types of applications. Key technologies used were .NET and React.

    "They had a lot of people with skills that matched our requirements."

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  • 62
    • Scheduling

      4.6
    • Quality

      4.7
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • L'viv, Ukraine

    OTAKOYI is a software development and design company located in Lviv, Ukraine. Since its establishment in 2011, it offers over 9 years of professional technical expertise and has grown up to 70 in-house specialists. The company’s services include UI/UX design, graphic design, and mobile and web development. 

    Clients

    • KIA
    • Phillip Morris
    • Emirates Development Bank
    • Stripe

    Industries

    Notable Project

    OTAKOYI continued the development of the website of a software development company's customer. They provided full stack development, and their tech stack includes React, Chakra UI, Node.js, and WebSocket.

    "It was a pleasure to work with the team."

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  • 63
    • $50,000+
    • 50 - 249 employees
    • Bratislava, Slovakia

    Altamira (formerly GBKSOFT) is a Ukraine-based web and mobile development company that specializes in UX/UI design, IT strategy consulting, web development, and mobile app development. Founded in 2011, the company delivers stable and efficient software solutions to clients looking to maximize ROI and capture consumer attention.

    The Altamira team has experience in PHP, Yii2, MySQL, Postgre.sql, JSON, XML, AJAX, JavaScript, HTML, CSS, jQUERY, Angular.Js, Android SDK, iOS, Sockets.IO, and Apache. With under 250 employees, Altamira works closely with clients to produce complex web applications that accelerate sales, engage customers, and increase online traffic. 

    Clients

    • Aquiline drones
    • PEI Services
    • Lee Riding
    • Daryn Dalton

    Industries

    Notable Project

    Altamira (formerly Altamira Softworks) was tasked to create a mobile app for truck drivers. The client aimed to help truck drivers in their daily communication.

    "What I most appreciate is their patience and professionalism when I want to change some elements on the app."

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  • 64
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • Gdańsk, Poland

    Neoteric is a software development company with about 100 employees. Headquartered in Gdańsk, Poland, the company focuses on small, mid-market, and enterprise clients across industries including information technology, business services, and telecommunications. Neoteric was founded in 2005 and specializes in software development, AI development, and product design.

    Clients

    • Siemens (Electronics)
    • Nestle (FMCG)
    • The World Bank (Finance)
    • Liveramp (Data integration)

    Industries

    Notable Project

    An R&D engineering company was looking to develop an intricate and fully-customizable ERP system for internal use, so they engaged with Neoteric for their custom software development services.

    "The Neoteric team has a good sense of responsibility, professionalism, and they’re always quick to respond."

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  • 65
    • Scheduling

      5.0
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $75,000+
    • 10 - 49 employees
    • Temecula, CA

    Reaktiv is a development agency in Temecula, Calif. Founded in 2011, they have about 9 employees that serve mostly enterprise and midmarket clients in the IT, media, and education sectors. Services include web development, web design, and digital strategy. 

    Clients

    • Microsoft
    • NBCUniversal
    • Salesforce
    • Alaska Airlines

    Industries

    Notable Project

    Reaktiv developed a media company's initial customer management software. The client hired them on a per-project basis for their engineering needs.

    "I've loved working with Reaktiv and would recommend them to anyone looking for a solid agency partner."

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  • 66
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.7
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • Tallinn, Estonia

    Cleveroad is a software development company founded in 2014. They have offices in Ukraine, the U.S., Norway and a team of over 100 specialists. They are focused on native mobile development, web development, IT strategy, web design, emerging technologies, and cross-platform solutions. 

     

    Clients

    • Virgin Atlantic
    • HSBC
    • TDC Denmark
    • DPD Group

    Industries

    Notable Project

    Cleveroad developed four native user-facing mobile apps for a sports technology company. They developed two apps, one for iOS and Android, for both of the client's brands.

    “They were responsive, flexible, and proactive when it came to solving problems.”

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  • 67
    • Scheduling

      4.7
    • Quality

      4.9
    • Cost

      4.7
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Headquartered in Warsaw, Poland and with an office in Atlanta, GA, 10Clouds has built software for businesses worldwide since 2009. The team of 120+ focuses on web development, software development, and DevOps services for scaleups and enterprise clients.

    Clients

    • Emergent Technology
    • Aleph Zero
    • Trust Stamp
    • Omise

    Industries

    Notable Project

    10Clouds has developed a website and desktop platform for an investing platform. This included website design and animations. They have also improved, tweaked, and redesigned all aspects the client demanded.

    "10 Clouds has been great. We've been actively working to increase hours per week and to increase the team."

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  • 68
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.7
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 250 - 999 employees
    • Clearwater, FL

    KitRUM is a software engineering company that was founded in 2014. The company is headquartered in Clearwater, Fla., with secondary locations in Krakow, Poland and Kharkov, Ukraine. They are made up of 49 employees. They specialize in AR/VR development, IoT development, and mobile app development. 

    Clients

    • Brands choose us because of our distributed nearshore engineering teams who rock in designing pixel-perfect UI
    • architecture
    • scalable web systems and mobile apps development with thousands of downloads. Our clients are a mix of Fortune enterprises
    • newly born VC-backed startups

    Industries

    Notable Project

    KitRUM handled a code adaptation project for a game development company. They were tasked with unifying the client's codebase and migrating an iOS app from Swift to Flutter.

    "We were impressed with their competence, speed, and customer-centric approach."

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  • 69
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.6
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Karachi, Pakistan

    Codup.co is a software development company that provides custom software development, web development, and e-commerce development services to their small business, enterprise, and mid-market clients in the hospitality and leisure, manufacturing, and e-commerce industries. Based in Karachi, their company is made up of 50 employees.

    Clients

    • Unilever
    • StitchFix
    • Steelcase
    • Harrods

    Industries

    Notable Project

    Codup provides web development for a legal publishing house. They’ve developed an LMS by customizing a LearnDash plug-in on WordPress. Now, they work on projects like site optimization to feature enhancements.

    “They’ve excelled at working out our network and understanding the complexities of our system.”

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  • 70
    • $1,000+
    • 2 - 9 employees
    • Bengaluru, India

    Aalpha Information Systems India Pvt. Ltd. is a software outsourcing company founded in 2007. Based in Hubli, India, they have additional offices in Bridgewater, N.J., Sandane, Norway and Bangalore, India. The team specializes in web development, e-Commerce development, and custom software development. They primarily serve small businesses in the consumer products & services, business services, and advertising & marketing industries. 

    Clients

    • Wurkr
    • World Bank
    • Securitas
    • SwissRe

    Industries

    Notable Project

    A digital marketing company hired Aalpha Information Systems India Pvt. Ltd to develop a website using Gutenburg and ACF blocks.

    "I was impressed with their good work quality and speed."

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  • 71
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 50 - 249 employees
    • West Hollywood, CA

    Rootstrap is a software development firm based in Los Angeles with offices in New York; Montevideo, Uruguay; and Buenos Aires, Argentina. Established in 2011, Rootstrap has over 70 employees with experience with both consumer digital products and business applications. Their services include mobile development for Android and iOS, web app development, UI/UX design, custom software, and AR/VR development.

    Clients

    • MasterClass
    • Google
    • Salesforce
    • Universal Music Group

    Industries

    Notable Project

    Rootstrap provides custom software development services for an online real estate company. They work on iOS and Android development, doing the engineering for the client’s applications.

    "Rootstrap is a good partner — we have an open dialog, and they feel like part of our team."

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  • 72
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • Salt Lake City, UT

    Neoito is a development agency in Trivandrum, India. Founded in 2014, they have over 100 employees that serve clients in a wide range of sectors. Services include web development, mobile app development, and UI/UX design.

    Clients

    • Waitwhile
    • Daily AI
    • Cruz Street
    • Wrench AI

    Industries

    Notable Project

    NeoITO developed a software solution from scratch for a graphic design company. The product used AI to automate the client’s workflow, creating designs instantly when a customer orders them.

    “They were there every step of the way, jumping on calls and reassuring us.”

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  • 73
    • $50,000+
    • 50 - 249 employees
    • Toronto, Canada

    JetRuby Agency LTD. is a research and development agency headquartered in San Francisco with offices in Krasnodar, Russia, Lviv and Ukraine. Since 2010, its team of over 100 has been specializing in e-commerce, web, mobile app and custom software development. JetRuby Agency LTD. focuses on clients in the real estate, consumer products, and financial industries.

    Clients

    • OSRAM
    • Financial Times
    • Universum
    • GoPro

    Industries

    Notable Project

    A software development company hired JetRuby Agency to build a mobile app MVP. They're tasked with conceptualizing the MVP's features and user flow, designing its UI, and adding more features.

    "JetRuby Agency is one of the best agencies I've worked with. They're extremely professional."

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  • 74
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 2 - 9 employees
    • Albuquerque, NM

    Pixelswithin is a Los Angeles-based digital design agency. Their services are focused on branding and web design. They work primarily with small businesses.

    Clients

    • Adobe
    • Unicode
    • USC
    • John Hopkins University

    Industries

    Notable Project

    Amí Naeily provided web design services for a D2C snack company. They updated the client's website, redesigning it according to their needs.

    "I was impressed with the workflow, thought process, and speed of Amí Naeily."

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  • 75
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Kyiv, Ukraine

    Voypost is a software agency with a team of fewer than 10 people based in Berlin. Founded in 2019, they offer custom software, web, and mobile app development services for small and medium-sized businesses using ReactJS, NodeJS, and more.

    Clients

    • Blindfeed GmbH
    • Pango GmbH
    • Value Technology AS

    Industries

    Notable Project

    Voypost redeveloped an e-commerce site for the end client of a custom development company using Next.js. They also helped create the custom software architecture needed for the search engine feature.

    “Working with Voypost, the technical quality of their deliverables was never a concern for us.”

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  • 76
    • Scheduling

      4.8
    • Quality

      4.7
    • Cost

      4.7
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • Wrocław, Poland

    Naturaily is an AI development company based in Wroclaw, Poland. Founded in 2012, this team of 21 employees provides web development, IoT development, and UX/UI design services.

    Clients

    • EA Technology
    • Eurobank
    • Blue Media
    • AW Niemeyer (AWN)

    Industries

    Notable Project

    Naturaily partnered with a strategy consultancy organization to build a website focused on sustainability. They used Next.js, TypeScript, and Tailwind to design the landing page.

    "The communication and workflow in the project were smooth and effortless."

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  • 77
    • Scheduling

      4.7
    • Quality

      4.7
    • Cost

      4.6
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 250 - 999 employees
    • London, United Kingdom

    SPD Group is an IT and development company in London, United Kingdom; Kyiv and Cherkasy, Ukraine; and Tel Aviv, Israel. Founded in 2006, they have about 16 employees that serve mostly midmarket and small-business clients in the business, financial, and IT sectors. Services include custom software development, AI, and IoT development.

    Clients

    • PitchBook Data
    • POYNT (a GoDaddy Brand)
    • Morningstar
    • floLive

    Industries

    Notable Project

    Working on an iOS and Android application, the SPD Group provides committed development resources in an outsourced staffing model. The assigned developers execute tasks and requirements provided by the client.

    "The results are good. Otherwise, we wouldn’t be working with them." 

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  • 78
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.6
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 250 - 999 employees
    • San Francisco, CA

    GeekyAnts is a mobile app development company that's headquartered in Bangalore, India; they also have a London office. They were founded in 2006 and have about 59 employees that provide services for mobile app development, web development, and UX/UI design services to clients of all sizes in a wide array of industries. 

    Clients

    • Google LLC
    • Siveco Romania
    • ChildMind Institute
    • Tellius

    Industries

    Notable Project

    A gaming company hired GeekyAnts to develop a gaming app that would house multiple games from different platforms. They used Unity and React Native for the frontend and Firebase for the backend.

    "Everything was done perfectly."

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  • 79
    • Scheduling

      4.9
    • Quality

      4.8
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 250 - 999 employees
    • Orlando, FL

    Simform is a custom software development company founded in 2010. They have helped organizations ranging from startups, Fortune 500 companies, and WHO-backed NGOs. The team of 250+ delivers digital solutions for their clients and offer artificial intelligence services, API integration, dedicated software development team, and software testing services.
     

    Clients

    • Redbull
    • Hilton
    • Sony Music
    • Boy Scouts of America

    Industries

    Notable Project

    Simform is providing a web engineer and a mobile engineer to advance the client's web app and mobile app. Working with React and iOS and Android technology, Simform integrates with the client's in-house team.

    "They’re an integrated member of our team, and it’s easy for us to talk to them in that capacity." 

     

     

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  • 80
    • $10,000+
    • 10 - 49 employees
    • Rotterdam, Netherlands

    Lizard Global is a full-stack digital company based in Rotterdam, Netherlands, with an office in Kuala Lumpur, Malaysia. The company, founded in 2012, has a team of more than 20 that provides mobile app development, web development, UX/UI design, and business consulting services to small and larger-sized companies and institutions in the business services, education, financial services, and other industries.

    Clients

    • Heineken
    • Nationale Nederlanden
    • KFC
    • SKOON

    Industries

    Notable Project

    Lizard Global is helping a healthcare startup develop a custom application. They are involved in the conceptualization, design, and development stages of the project.

    "Their guidance and leadership have been vital in developing the application."

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  • 81
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 250 - 999 employees
    • Nashua, NH

    A tech frontrunner since 1989, Zco is a full-stack app development firm offering web, mobile, and animation services. Headquartered in Nashua, New Hampshire with a Boston office, the 200+ specialists comprise a powerhouse team with outstanding and varied proficiencies.

    Clients

    • Golflogix
    • Volkswagen
    • Microsoft
    • Harvard University

    Industries

    Notable Project

    A social music platform hired Zco to develop a mobile app for iOS and Android. They've delivered wireframes, interface screens, and design documents before building the final app in in four-week sprints.

    “I really appreciate how detail-oriented the Zco team is.”

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  • 82
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 50 - 249 employees
    • Austin, TX

    Yojji is a software development firm based in London with an office in Kharkiv, Ukraine. The firm, founded in 2017, has more than 35 employees and provides custom software development, web development, mobile app development, web design, product design, and application testing services. Yojji serves small and larger-sized companies in various industries that include financial services, business services, and health care & medical. 

    Clients

    • Mrs Wordsmith Limited
    • OSU LTD
    • Mabbly
    • Valapay LTD

    Industries

    Notable Project

    Yojji provided mobile app development support for a mobile app development company. They provided the client with developers to assist in the development of a health-based mobile app for an end client.

    "Yojji supplied us with reliable, capable, and competent resources."

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  • 83
    • $5,000+
    • 10 - 49 employees
    • Odesa, Ukraine

    Solar Digital is a development-focused digital agency based in Odessa, Ukraine. Founded in 2016, Solar Digital has a team of 28 employees. They provide branding, UI/UX design, web development, and mobile app development services to a diverse and global client base.

    Clients

    • Stark Shipping (analytical portal of marine industry
    • UA) Sailica (Yacht booking system
    • UK) Firusas (Fashion eCommerce
    • Austria) IndiGem (Jewellery marketplace

    Industries

    Notable Project

    Solar Digital redesigned the website of a government-related consultancy company using Readymag. The task was to tell the client’s work story better through its new design.

    “Solar Digital was a trustworthy partner, which was reflected in a trusted relationship.”

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  • 84
    • Scheduling

      4.7
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • Kyiv, Ukraine

    Uptech is a web and mobile app development company based in Kyiv, Ukraine. They were founded in 2016 and have a team of about 75 employees. Along with mobile app development and web development, they also specialize in UX/UI design. They mainly serve midmarket and small business clients in the eCommerce, health care, and financial services industries.

    Clients

    • Unilever(DSC)
    • Drone Base
    • Aspiration
    • Yaza

    Industries

    Notable Project

    Uptech provides consulting and staff augmentation services to a fintech company for development projects. Currently, they provide a frontend developer and a third-party DevOps engineer for iOS app development.

    “Uptech always understands what we actually want.”

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  • 85
    • Scheduling

      4.7
    • Quality

      4.9
    • Cost

      4.7
    • NPS

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

    Aspirity is a development agency with a representative office in San Francisco CA. Founded in 2011, they provide professional teams for extension startup and midmarket companies. Their services include full stack web and mobile development, UI\UX and product design.

    Clients

    • Schibsted Media Group
    • Arctic Group
    • Shoreline.io

    Industries

    Notable Project

    Aspirity provided custom software designs for a production company's landing page. They designed a clickable prototype on Figma that matched the company's branding.

    " The people we worked with at Aspirity were simply awesome and I was really grateful to have found them."

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  • 86
    • $5,000+
    • 250 - 999 employees
    • Tallinn, Estonia

    Custom software development firm SST was established in 2018. Based in Tallinn, Estonia and Kyiv, Ukraine, their midsize team offers custom software development, web development, e-commerce development, and mobile app development.

    Clients

    • Job Meteor
    • Lukoil
    • SuperLudi
    • SportLife

    Industries

    Notable Project

    Smart Soft Team was hired to develop a mobile application for  healthcare clinic. The team utilized several prototypes and mockups. 

    "They delivered expected results in expected terms."

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  • 87
    • $25,000+
    • 10 - 49 employees
    • Budapest, Hungary

    Mindtech Apps is a mobile application and web development firm based in Budapest, Hungary. Founded in 2015, they have 20 employees who provide mobile app development, website creation, UX and UI design, and technology solutions. They work for various small, midmarket and international businesses.

    Clients

    • KPMG
    • Isobar
    • Wien Energie
    • Sziget Festival

    Industries

    Notable Project

    Mindtech Apps developed a cross-platform mobile app for an online book seller. The app was compatible with iOS, Android, and Huawei.

    "They were extremely patient with us."

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  • 88
    • Undisclosed
    • 1,000 - 9,999 employees
    • Denver, CO

    Spire Digital is a Denver, CO-based digital product development company. The team of more than 50 employees specializes in custom software development, UX/UI design, web development, and app development.

    Clients

    • Lockheed Martin
    • TomTom
    • US Navy
    • AT&T

    Industries

    Notable Project

    To further improve their client's efforts in helping their patients, a healthcare tech data company engaged with Spire Digital to develop a mobile app and design its UI/UX.

    "This partnership helped us understand what our next steps should be as a company moving forward."

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  • 89
    • Scheduling

      4.5
    • Quality

      4.6
    • Cost

      4.4
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • Kharkiv, Ukraine

    AnvilEight is a development firm founded in 2010. It's headquartered in Kharkiv, Ukraine and has another location in London, in the UK. AnvilEight has about 25 employees. The firm specializes in web and mobile app development, and most of its clients are small businesses.

    Clients

    • United Nations World Food Programme
    • University of Michigan
    • Bid Perfect Ltd.
    • Yomdel Ltd.

    Industries

    Notable Project

    A software company has partnered with AnvilEight for development and maintenance staff augmentation on a Django SaaS project. The team has built new features using Python, Django, JavaScript, and more.

    "They communicate well, deliver high-quality code, and share ideas for improvement."

    Visit Site
  • 90
    • Scheduling

      4.7
    • Quality

      4.9
    • Cost

      4.6
    • NPS

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

    Highland is a digital experience agency based in Chicago. Founded in 1999, the team of about 30 specializes in product strategy, UX/UI design, and custom software development. They work primarily with midmarket to enterprise clients, mainly in the healthcare, financial services, and nonprofit sectors.
     

    Clients

    • Thrivent Financial
    • The Morton Arboretum
    • Make-A-Wish
    • McGraw-Hill

    Industries

    Notable Project

    Highland was tasked with creating a website for a Jewish domestic abuse agency. The platform was part of a new program that teaches how to have a long-term healthy relationship.

    "I know and trust that they will be there for us over time."

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