Looking for a top JavaScript developer in New York City?

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. Disadvantages to consider include security such as bugs on the client-side.

To assist you in your search for a partner, we’ve compiled this list of the top JavaScript development agencies in New York City. Browse descriptions, feedback, and awards to find which can best suit your company’s needs. If you need more support, tell us about your project, and we'll match you with recommended companies.

List of the Best New York City JavaScript Developers

  • 1
    $50,000+
    50 - 249 Employees
    New York NY

    XWP is a web agency founded in Chelsea, Australia in 2005 with over 50 employees. They offer web development, web design, and UX/UI design solutions to mid-market and enterprise-level clients in the fields of IT and media.

    Clients
    Google
    News Corp
    Automattic
    Rolling Stone
    Industries
    Notable Project

    XWP developed a WordPress plugin for a large tech company. The company had XWP write the code of the plugin. The plugin has since had over half a million installs since its release.

    “XWP is versatile in being able to identify external or internal talent needed at any moment in time for anything, from extra plugin development to catering an event and everything that happens in between.” - Partner Development Manager, Large Tech Company

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  • 2
    $50,000+
    50 - 249 Employees
    New York NY

    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 provided business strategy consulting and software development services for a music startup in the US. The client wanted to build a digital platform to connect local musicians. Rootstrap's team outlined an MVP process and monetizing strategy. Since the prototype was introduced, the client has received considerable funding from outside sources, as well as positive feedback from professional musicians.

    "Their work looks good and we’ve learned a lot. They’ve been great to work with." – Founder, Music Startup

  • 3
    $25,000+
    1,000 - 9,999 Employees
    New York NY

    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 1600+ engineers with experience in all of the latest technologies.

    Clients
    ClassPass
    ZEFR
    Gain Capital (forex.com)
    Merkle
    Industries
    Notable Project

    iTechArt Group is assisting with the development of a content management software for video advertisements. The team is building the system to accommodate multiple social media platforms like YouTube and Facebook.

    “The engagement has been very successful overall thus far. The work we've been able to quickly launch wouldn't have been possible without iTechArt's help. In addition to the quality of their code, they've also integrated extremely well into our team, adapting to our internal processes relatively seamlessly.” – Founder & CTO, Software Consulting Agency

  • 4
    $50,000+
    50 - 249 Employees
    New York NY

    Tivix is a digital product development and design company headquartered in San Francisco, with offices across the US, UK, and Europe. Founded in 2008, they have over 90 employees who serve startup, midmarket, and enterprise clients across diverse industries such as FinTech, health care, manufacturing, government, and nonprofit. Tivix reduces engineering risk for clients by offering rapid time-to-market while delivering standards-based code that can be transitioned to an internal team at any time. Their focus is building both internal and consumer-facing digital products that drive business growth. Services include product management, UX/UI design, full-stack software engineering, and DevOps

    Clients
    NATO
    Apple
    United Nations
    Zoetis
    Industries
    Notable Project

    Tivix worked with an intergovernmental military alliance to rebuild a mission-critical software system. If and when submarines in international waters come into distress, the organization plans and coordinates the rescue effort of such submarines. Tivix was given complex system requirements and asked to come up with an effective design and solution that would replace a decades-old system. The client was incredibly impressed at every stage of the engagement, with Tivix delivering detailed systems and user-experience design, followed by robust development and operationalization of the system internationally. 

    Every single milestone has been met exactly on time. The company has met every requirement, both in terms of time as well as quality.” Maritime Service Owner, Intergovernmental Military Alliance

  • 5
    Undisclosed
    50 - 249 Employees
    New York NY

    Alley Interactive is a web development firm based in New York City with an additional office in Burlington, Vt. Founded in 2010, the team of 73 specializes in web development, web design and UX/UI design. They work primarily with midmarket clients in the media industry.

    Clients
    The Henry J. Kaiser Family Foundation
    New York Post
    The Brookings Institution
    Reporters Committee for Freedom of the Press
    Industries
    Notable Project

    Alley Interactive worked on WordPress implementation for a nonprofit research agency. They consolidated content from several websites and databases onto a single WordPress site and CMS. The project included back-end development, data migration, and ongoing support. The client appreciated their direct communication throughout the project.

    “If we have a question or see a bug, you're talking directly to the person that knows how to fix it. They're not so caught up in the code that they can't communicate effectively with clients.” – Associate Director, Nonprofit Research Agency

  • 6
    $10,000+
    50 - 249 Employees
    New York NY

    Unified Infotech is technology company headquartered in New York with another office in Kolkata, India. Founded in 2010, their team of 150+ works with enterprises, small to medium businesses, and startups as end-to-end solution partners for custom-tailored software, web, and mobile apps.

    Clients
    NBC Universal
    Citi Bank
    United Nations
    Sony
    Industries
    Notable Project

    Unified Infotech developed a home management platform that needed support creating a more user-friendly UI. They provided development, design, SA, and QA services for the client. They leveraged multiple technologies and went well beyond the original scope of work to create an improvement from the previous product. 

    the team went above and beyond once we set parameters for the process." – Co-Founder, Home Management Platform

  • 7
    $10,000+
    250 - 999 Employees
    New York NY

    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

    Zco developed an app for both iOS and Android to showcase the products of a large electrical parts manufacturer. Their prompt turnaround and response time, competitive pricing, and immaculate deliverables resulted in an experience that was “overwhelmingly positive.”

    "Their technical expertise is spot-on and they're highly responsive, even post-launch." – Senior Product Manager, Manufacturing Company

  • 8
    $10,000+
    50 - 249 Employees
    New York NY

    Propeller is a web design and development company that was founded in 2000. Headquartered in London, with another office in New York, they have a team of over 55. They specialize in e-commerce development, email marketing, web design, and SEO or clients in the hospitality, leisure, consumer products, and retail industries.

    Clients
    Azzuri Restaurant Group
    Twinings
    Young's Pubs
    MWELL - Kellogg's
    Industries
    Notable Project

    Propeller developed and designed a creative website for a photography studio. The team also performed digital marketing services, crafting keywords. SEO campaigns improved search results and mobile usage.

    "Propeller created a platform that represents me, my taste and artistic level."– Founder, Photography Studio

  • 9
    $5,000+
    50 - 249 Employees
    New York NY

    Although they specialize in e-commerce and web development, End Point also creates custom software and is an expert on enterprise security. Founded in 1995 in New York City, the team of 50+ employees serves mid-market and small businesses across a variety of industries.

    Clients
    Google
    Backcountry
    Modells
    Paper Source
    Industries
    Notable Project

    End Point was hired by a tourism company to help with e-commerce web app hosting, security, and hardware maintenance. Since working with End Point, the client has experienced all-time highs for website traffic.

    “End Point is very transparent about what they're working on in terms of providing complete details. We don't have any surprises at the end of the month as a result. They're very dependable, delivering what they promise every time.” – Director of E-Commerce, Tourism Company

  • 10
    $75,000+
    50 - 249 Employees
    New York NY

    With a team of 50+, Fueled specializes in creating mobile apps and websites. The New York-based app development company aims to create easy-to-use and attractive products for customers, whether they are big or small brands.

    Clients
    MGM Resorts International
    9Gag
    Harvard
    Rite Aid
    Industries
    Notable Project

    Fueled designed a bidding-style app for a company that deals with nightlife reservations. They built the app from scratch, taking into consideration what the company wanted, as well as giving advice. The app had a lot of functions, such as a list of venues, submission options, and tools that allowed notifications to be sent from venues.

    “They’re incredibly efficient in the work that they do and know what they're doing in design, coding, and executing their ideas. They have a great understanding of what's current and get things done very quickly compared to others.” – Founder, Mobile App

  • 11
    $10,000+
    50 - 249 Employees
    Brooklyn NY

    CemtrexLabs is a creative technology agency in Brooklyn, NY. Founded in 2009, they have about 100 employees that help brands grow with custom digital solutions, ranging from AR and VR applications to design and development services.

    Clients
    HBO Max
    Modelo
    Dropbox
    Wacoal
    Industries
    Notable Project

    CemtrexLabs developed two Augmented Reality experiences for a beverage company to promote their sweepstakes and create memorable brand interactions. The team built them in WebAR with custom 3D models. The campaigns helped conversions skyrocket and added a new element of excitement to the company's marketing.

    "They’re very confident and they have a solution for everything." — VP Experiential, Marketing Agency

  • 12
    $100,000+
    50 - 249 Employees
    New York NY

    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.

    Clients
    Hawaiian Airlines
    Audi
    3M
    HP
    Industries
    Notable Project

    A California-based content discovery startup hired ArcTouch to design a content discovery platform and iOS app. They provided feedback on the startup's user stories, created wireframes, and developed the platform and app. The project was completed ahead of schedule.

    “We’re astonished at the quality of the work. We’re a small company, and we weren’t expecting the same level of service a Fortune 500 company might enjoy. We were amazed by their design and the effort that went into every screen.” – Senior Project Manger, Content Discovery Startup

  • 13
    $1,000+
    50 - 249 Employees
    New York NY

    SJ Innovation is an IT solutions provider based in New York, with offices in Ukraine, India, and Bangladesh. The company, founded in 2004, has more than 140 employees and provides web development, mobile app development, and application testing services to small and midmarket companies in various industries.

    Clients
    Johnson & Johnson USA
    Janssen Pharmaceuticals
    TeachersPayTeachers
    Council on Foreign Relations
    Industries
    Notable Project

    A mortgage bank hired SJ Innovation to work on both front- and backend of various web-based platforms, including the bank's customized CRM, intranet, and some proprietary software that the bank provides to its customers. All of the development was done using WordPress, completely customized, and includes plug-ins to integrate with other systems. SJ Innovation met all expectations in performing these tasks.

    "We’ve been pleased with the designs and capabilities of the finished products that they deliver." - IT Director, Mortgage Bank

  • 14
    $5,000+
    10 - 49 Employees
    New York NY

    ATTCK, LLC. is a New York based digital design agency. They were founded in 2014 and have a team of 11 employees who specialize in web design, UX/UI design, and web development. They primarily work with small business clients in the real estate, non-profit, and retail industries.

    Industries
    Notable Project

    ATTCK, LLC. redesigned the website of a non-profit. They migrated the client’s original Drupal site onto a WordPress platform, which allowed the majority of the site’s content to be edited by non-experts, a feature that was important to the client. The client was happy with the redesign and said that the new site had received positive feedback.  

    “The website is definitely a success story. When we started working with ATTCK we cut our developer bill in half without losing quality.” – Former Digital Strategist, Non-profit
     

  • 15
    $25,000+
    10 - 49 Employees
    New York NY

    Digital product development company Nolte is headquartered in New York with an additional office in Mexico City, Mexico. With a team of about 20 employees, Nolte has specialized in WordPress web development and design since its founding in 2016. They also have experience with software and mobile app development.

    Clients
    Amstel Light
    Amtrak
    AOL
    Bloomscape
    Notable Project

    Nolte built an Android and iOS app for an educational organization using the Ionic framework. The app is the organization’s core platform and helps students study for a standardized test. The partnership is ongoing, with Nolte updating and maintaining the apps.

    “The collaboration has always been fluid, and Nolte always replies quickly to us. I have no negative feedback in terms of project management.” – Founder, Educational Organization

  • 16
    $50,000+
    10 - 49 Employees
    New York NY

    Dom & Tom was founded in 2009 and has offices around the U.S. in New York, Chicago, and Los Angeles. They are an end-to-end digital product development agency that focuses on emerging technologies. Their team of 100+ created over 120 native mobile apps and worked on 400+ web projects. They specialize in research and planning, UX strategy and design, engineering, QA (quality assurance), and deployment.

    Clients
    Samsung
    GE
    NBA
    Fitch Ratings
    Industries
    Notable Project

    Dom & Tom worked with a digital agency for a website redesign. Dom & Tom designed and tested code for requested features for the site. The agency felt that the Dom & Tom team was responsive and displayed impressive attention to detail. 

    “Their staff was incredibly helpful. They follow up and they’re very attentive. They worked relentlessly to help us complete this project on time and within budget, which was phenomenal.” – Project Manager, Digital Agency

  • 17
    $25,000+
    10 - 49 Employees
    Brooklyn NY

    Buzzworthy Studio is a digital studio based in New York. Founded in 2012, the team of 11 specializes in web design, web development and UX/UI design. They work primarily with small business clients.

    Clients
    Wework
    Bareburger
    Barstool Sports
    Betches
    Notable Project

    Buzzworthy Studio worked on a website redesign for a digital advertising agency. They developed a website using marketing materials and integrated the site with Google Docs. The client was impressed with the positive feedback the project received.

    “In addition, we've gotten a ton of amazing feedback from friends, family, clients, and prospects about the stunning look and feel of our site. Our traffic increased, and our contact features gained us some incredible leads.” – Manager, Digital Advertising Agency

  • 18
    $25,000+
    10 - 49 Employees
    New York NY

    Perpetual is a software product innovation and development company based in New York City. Founded in 2012, Perpetual's team of around 25 employees provides a wide range of services including UX/UI design, web design, mobile and custom software development, IT staff augmentation, product design, and more.

    Clients
    Reuters
    MIT
    The Inside
    Reliance Jio
    Industries
    Notable Project

    Perpetual is working with this financial services firm to assist in rebuilding its UI. The team planned the entire project, from the mockups to the detailed specs, and produced a .NET-based, real-time news services application, which is currently being QA tested by Perpetual.

    "Users have received the platform extremely well. We’re very excited about how well it’s performing. We haven’t experienced any technical issues." – Product Management, Financial Services Firm

  • 19
    $50,000+
    10 - 49 Employees
    New York NY

    With offices in NY and Pittsburgh, PA, Huemor is a design and development agency. With less than 50 employees, Huemor focuses on digital strategy, web development, UX/UI design, and conversion optimization.

    Clients
    American Crew
    Geico
    Henry Schein
    The Humane Leauge
    Industries
    Notable Project

    Huemor updated a website for a local media solutions company in New York. The website, hosted on WordPress, was easy to use and had an improved user experience. The client said that the site that made them more competitive as a company.

    “They took the time to understand our business, our competitors, and the existing site. … Huemor also identified prospective users and built personas around them, which helped determine the journeys and flow.” – VP of Marketing, Media Solution Company

  • 20
    Undisclosed
    10 - 49 Employees
    New York City NY

    IdeaWork Studios is a full-service advertising, development, and design agency founded in 1999. Headquartered in New York City, the company also has offices in Santa Barbara, CA and Las Vegas, NV. The team of more than 20 employees offers branding, web design, web development, and other marketing and design services such as logo and packaging design and email marketing.

    Industries
    Notable Project

    After a wellness resort was acquired by another company, it needed to rebrand and hired IdeaWork Studios. The project included creating a new name and logo for the resort, updating its website to reflect the new branding, and launching an advertising campaign.

    "The level of creativity they showed for a complete rebranding was impressive. We needed to take the resort in a completely different direction, and they did it very quickly. It was impressive what they understood about the brand and what they put forward from a presentation standpoint." – Director of Sales and Marketing, Wellness Resort

  • 21
    $50,000+
    50 - 249 Employees
    New York NY

    New York-based mobile app and web development company Utility was founded in 2013. The team of about 40 engineers, digital strategists, and creative designers serves small, mid-market, and enterprise clients across all industries. They complement their development expertise with UX/UI design.

    Clients
    Airbnb
    Samsung
    Verizon
    DirecTV
    Industries
    Notable Project

    Utility developed a live streaming platform for a new network. The project included UX/UI design, live streaming architecture, and search filtering. As a result of Utility’s work, the network received positive reviews and was acquired by a big name company.

    “We provided our goals, told them what we needed, and collaborated during the rounds of UX designs, but they took it all from there and steered the strategies around how to implement and execute everything digitally.” – Director, Network

  • 22
    $25,000+
    10 - 49 Employees
    New York NY

    Compose[d] is a digital strategy & creative services agency based in New York and founded in 2010. With more than 10 professionals, they offer advertising, email marketing, and other digital marketing solutions to clients in the fields of advertising and e-commerce.

    Clients
    MetLife
    COTY (Marc Jacobs Fragrances
    Calvin Klein Fragrances)
    Estée Lauder
    Industries
    Notable Project

    Compose[d] provided SMM and content development solutions for a beauty brand. This included collateral creation and digital assets. The brand was able to reach target engagement levels with their most recent campaign.

    “They’re attentive to our needs and deliver on them.” - Head of Marketing & Communications, Beauty Brand

  • 23
    $100,000+
    10 - 49 Employees
    New York NY

    Rose Digital is a technology consulting firm based in New York City. Founded in 2014, their small team of 5 specializes in mobile app development, web development, and AI. They work with midmarkets, enterprises, and small businesses, focusing on advertising and marketing, business services, arts, entertainment, and music.  

    Clients
    Annex88
    Adidas
    Airbnb
    Skanska
    Industries
    Notable Project

    Rose Digital worked on AR web app development for a digital agency. They built a web-based AR experience that enabled users to interact with 3D product animations. The client was impressed with the knowledge they brought to the project.

    “The team is composed of knowledgeable and experienced people that choose projects based on what they’re passionate about, and it shows.” – Producer, Digital Agency 

  • 24
    $10,000+
    50 - 249 Employees
    Brooklyn NY

    Five Jars, a web development firm, was established in 2017. Their small team is in Dover, Delaware and Kyiv, Ukraine. Their services include web development, custom software development, and web design.

    Industries
    Notable Project

    A nonprofit organization hired Five Jars to design and develop a website for gym members. This involves a revamp of the site, hosting migration, and ongoing maintenance, support, and updates.

    ‘‘We don’t have to worry about problems or something falling through the cracks; they cover everything.’’

  • 25
    $25,000+
    50 - 249 Employees
    New York NY

    Mobile app development company Tapptitude has offices in Romania, the US, and London. The team of 40+ employees specializes in iOS and Android app development and offers UX/UI design, IT strategy consulting, and web development. Founded in 2013, Tapptitude mainly works with small businesses and startups in the real estate, automotive, and arts and entertainment industries.

    Clients
    Tenor
    Glorify
    Wellory
    Ontapp
    Industries
    Notable Project

    Tapptitude developed an app prototype for a food ordering company. They executed the food ordering company’s vision perfectly and were retained to develop the full product. Some app features Tapptitude developed included platform signup, payment systems, and restaurant menu integration.

    “The proof that I’ve been happy with Tapptitude is that we’ve continued working long-term, even though I’ve had the option to use in-house developers. I felt that the communication was great and, most importantly, the quality Tapptitude provides is amazing, as is the communication.” – CEO, Food Ordering App

  • 26
    $10,000+
    2 - 9 Employees
    New York NY

    Studio Simpatico is a design and digital studio based in New York City. Founded in 2017, the small team of 4 specializes in UX/UI design, branding, web design, and more. They primarily work with small businesses, focusing on advertising and media, financial services, and media.

     

    Clients
    NaNoWriMo
    OK! Magazine
    MM.LaFleur
    Document Journal
    Industries
    Notable Project

    Studio Simpatico worked on WordPress web design for a health-tech company. They built a WordPress site from scratch with new templates and created custom graphics. They also helped migrate and launch the site. The client appreciated the positive feedback the project received.

    “Our customers, peers, and friends all said that site looks fantastic and provided a lot of positive feedback.” – CTO, Health-Tech Company

  • 27
    $100,000+
    50 - 249 Employees
    New York NY

    Stride is a New York City-based software development company that embraces agile development practices. Founded in 2014, Stride has proven itself as product development experts, with experience with software, websites, e-commerce, mobile apps, and IoT.

    Clients
    Spotify
    Stash
    Codecademy
    Casper
    Industries
    Notable Project

    Stride was hired by an e-learning platform to work on three areas of its online platform: teacher experience, user experience, and educational content. Stride identified members of its to team to work with the managers responsible for each area of the e-learning platform. The project required development and design work for both the platform and connected web application. Later, Stride helped the client integrate with a third-party payment processing system.

    “What really impresses me the most about them is their consultants’ ability to collaborate with the teams with which they’re working. We’ve had experiences with other consultancies in the past where their engineers were much more comfortable going off on their own.” – Head of Technology, E-Learning Platform

  • 28
    $50,000+
    10 - 49 Employees
    New York NY

    Reflections is a New York based digital innovations lab. They were founded in 1999 and have a team of 16 employees. They specialize in web development, mobile app development, and UX/UI design. They mainly work with small business and mid-market clients in the advertising, consumer products, and business services industries. 

    Clients
    The Shade Store
    Aveeno
    State Farm
    Draft Kings
    Industries
    Notable Project

    Reflexions developed an eCommerce site for a fantasy sports startup. They used PHP and an AWS Elastic Beanstalk environment to create a platform that allowed users to use cash and points earned on the site to to buy products. The client was extremely pleased with the quality of the work and communication. 

    “We were very pleased with the work and have continued to hire Reflexions for future projects.” – Director of Product, Fantasy Sports Startup
     

  • 29
    $75,000+
    50 - 249 Employees
    New York NY

    Blue Label Labs is a 64-person digital product development agency based in New York City with offices in Seattle and San Francisco. They build the right product by bringing together the expertise of the client, product knowledge, and iterative customer feedback. Since their founding in 2009, they have built and transformed over 300 businesses through strategy, design, and development. Their client ranges from startup entrepreneurs to Fortune 500s.

    Clients
    Bloomberg News
    Microsoft
    Google/Alphabet
    Fender
    Industries
    Notable Project

    Blue Label Labs both consulted for and developed an iOS and Android mobile app for an experience management platform. The client enjoyed the positive responses from app users, loved the team’s responsiveness, and referred to their project management as “excellent.”

    "They feel like they’re an extension of our team, and I can pick up the phone at any time and get a response." – Product Manager, Market Research Firm

  • 30
    $10,000+
    50 - 249 Employees
    Brooklyn NY

    A software development and design company, Sophilabs is headquartered in Brooklyn, N.Y. Founded in 2012, their team of fewer than 50 employees serves small to midmarket businesses, specializing in the education, financial services, and healthcare industries. Services include web, custom software, and mobile app development.

    Clients
    Pfizer / Amgen
    Amgen SAP
    Oxford Economics
    Baker McKenzie
    Industries
    Notable Project

    Sophilabs provided web development services to a performing arts nonprofit. They were responsible for integrating a large, complex archive of AV content with a membership supporter system in Python. The team was skilled and professional.

    “They really went above and beyond. They’re very amenable to ideas and flexible as well.” — CEO, Performance Art Nonprofit

Tell us about your project
NEED HELP SELECTING A COMPANY?

Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

TELL US ABOUT YOUR PROJECT