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Top IT Service Providers for JavaScript in the USA

762 IT service providers ranked by rating, review volume and listing quality.

JavaScript spans more ground than any other language on this list. It runs in every browser, on servers through Node, and inside mobile and desktop applications, so a firm listing it may be doing front-end interface work, back-end services, or both.

The useful clarification is which part of the stack, and with what. Front-end work is dominated by a handful of frameworks and the choice affects hiring for years afterwards. Back-end JavaScript competes with other server languages and is chosen for good reasons and bad ones. Ask why they would pick it for your project specifically — a clear answer indicates a team choosing tools, and a vague one indicates a team using whatever they already know.

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Between them, the 600 best-ranked of these 762 IT service providers cover web development (578), iOS app (402), android (387) and mobile app development (381). They also list work in Washington, New York, California and Oregon. 598 of them have written a profile you can read before you get in touch.

We list more than 750 IT service providers in the USA listed for JavaScript development. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: Untold Studio, Tecziq Solutions and Snaps Technology.

Before you shortlist, check

Which frameworks they use, and why for your project
Automated tests and code review as standard
Performance and accessibility targets agreed up front
How dependencies are kept up to date after launch

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Aculance IT Solutions Pvt Ltd.
Mobile App Development · ERP Software Development · Web Development
Aculance IT Solution Pvt. Ltd. welcomes you in the technology world. Aculance IT Solution Pvt. Ltd. acquired APPXTECH in 2018.
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Brushfire Design Ltd Design
Web Development · Web Design · UI/UX Design
Here at Brushfire Design, we specialize in the conception, design, and development of world-class, cutting-edge websites.
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Numerator
Mobile App Development · Web Development · iOS App
Market Track and InfoScout have merged to form Numerator, a marketing intelligence firm that brings together omnichannel marketing, merchandising and sales data to make pursuing…
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UDP Technology Ltd
Web Development · Web Design · React Native
• Designated as a World-Class Products (WCP) manufacturing company for the intelligent network cameras.(by Ministry of Knowledge Economy) • Selected as a participant company of the…
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NameIngram Micro
Web Development · iOS App · Web Design
Ingram Micro helps businesses Realize the Promise of Technology™. It delivers a full spectrum of global technology and supply chain services to businesses around the world.
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Infognana (IG) Solutions
ERP Software Development · Web Development · iOS App
Infognana solutions were established with a vision to emerge as a best-in-class outsourcing and technology solutions destination for businesses worldwide.
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Compuware
Web Development · Web Design · UI/UX Design
As The Mainframe Software Company for the Next 50 Years, Compuware Corporation empowers the world’s largest companies to advance their mainframe intellectual property to meet the…
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Logz.io
Mobile App Development · Web Development · Web Design
Logz.io is a cloud observability platform for modern engineering teams.
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Unknowns Lab
Mobile App Development · Web Development · iOS App
We have extended our services and protected companies ranging from entrepreneurs to Fortune 500 from unidentified cyber threats and delivered them a complete security solution.
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Cvent
Web Development · Web Design · UI/UX Design
Join more than 4,300 employees around the world, who power Cvent’s technology to transform the meetings, events, and hospitality industries.
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Brightpearl
Web Development · iOS App · Web Design
Brightpearl is a retail operations platform for retailers and wholesalers.
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PROS
Web Development · Web Design · UI/UX Design
PROS Holdings, Inc. (NYSE: PRO) provides AI-based solutions that power commerce in the digital economy.
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Kaltura
Web Development · Web Design · React Native
Kaltura's mission is to power any video experience. Founded in 2006, Kaltura is a recognized leader in the Enterprise Video Platform, Education Video Platform, Cloud TV, and…
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Veritone, Inc.
Web Development · Web Design · UI/UX Design
Veritone (Nasdaq: VERI) is a leading provider of artificial intelligence (AI) technology and solutions.
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IDT Corporation
Web Development · Web Design · UI/UX Design
We know that you’ll have looked at quite a few company pages but IDT is different. We want people who want to make a big difference to our company with big ambitions.
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K2
Web Development · Web Design · UI/UX Design
K2 helps you build apps that drive your business forward. Using a simple drag-and-drop interface, and with minimal code, create powerful workflow apps that tie into virtually any…
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Synerzip
Mobile App Development · Web Development · iOS App
There’s a reason clients chose Synerzip. Not only do we help them scale their engineering capacity and accelerate their roadmap, we become their long-term partner and trusted…
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Jive Software
Web Development · Web Design · UI/UX Design
Jive is the leading provider of modern communication and collaboration solutions for business.
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Sharp Decisions
Web Development · Web Design · UI/UX Design
Sharp Decisions is a talent solution and consulting firm that helps clients overcome their most pressing challenges.
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SplashBI
Web Development · Web Design · UI/UX Design
SplashBI helps organizations make the very best business decisions by providing instant access to data from disparate systems in the form of reports, visualizations, & trends.
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Asure Software
Web Development · Web Design · UI/UX Design
Asure (NASDAQ: ASUR) sees Human Capital Management (HCM) through the lens of entrepreneurs and executives with an owner’s mentality.
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Heroku
Web Development · Web Design · UI/UX Design
Heroku, a Salesforce company and an industry pioneer in platform as a service (PaaS), enables developers to build and run applications entirely in the cloud, without the need to…
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Demandbase
Social Media Marketing · Web Development · Web Design
The biggest and fastest-growing companies in the world rely on Demandbase to drive their Account-Based Marketing strategies and maximize B2B marketing performance.
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Neverfail
Web Development · iOS App · Web Design
Neverfail enables IT to meet or exceed service level agreements (SLAs) by providing continuous availability and connectivity to applications, data, and infrastructure.
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How is this ranking worked out?

The order comes from what each firm publishes and what has been verified about it, and never from payment:

Profile completeness: the details a buyer needs to judge a firm — what it does, who it serves, how it prices, who it has worked for
Earned trust: verification, awards and the other checks a firm has actually passed
Client reviews, where they exist: the rating is smoothed, so one five-star review cannot outrank a firm with a hundred good ones, and volume counts with diminishing returns

Client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.

Sponsored listings are labelled and shown apart from this list. How rankings work

Only firms whose profile names the USA are counted here, so a firm that lists a town but no country is not yet included.

Where else can I look?

The same list elsewhere: UK (478) · India (392) · Germany (214) · Ukraine (145).

Other specialisms in the USA: e-commerce (1,539) · Android app development (1,530) · iOS app development (1,452) · UI/UX design (1,355) · PHP development (946).

Every IT service provider in the USA: the full list.

Every category in the USA: the USA country page.

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Everything here links back to the same verified catalogue. Pick your next stop.

Top IT Service Providers for JavaScript in the USA

Aculance IT Solutions Pvt Ltd.

Brushfire Design Ltd Design

Numerator

UDP Technology Ltd

NameIngram Micro

Infognana (IG) Solutions

Compuware

Logz.io

Unknowns Lab

Cvent

Brightpearl

PROS

Kaltura

Veritone, Inc.

IDT Corporation

K2

Synerzip

Jive Software

Sharp Decisions

SplashBI

Asure Software

Heroku

Demandbase

Neverfail