Companies · category

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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VMware, Inc
Mobile App Development · Custom Software Development · iOS App
At VMware, we believe that software has the power to unlock new opportunities for people and our planet.
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Arise Virtual Solutions Inc.
Web Development · Web Design · UI/UX Design
Arise is a pioneer of on-demand customer management technology and business process outsourcing.
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Harte Hanks
Web Development · Web Design · UI/UX Design
Harte Hanks is a global marketing firm that specializes in helping brands win attention, build trust and earn loyalty in an ever-changing world.
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UsableNet
Web Development · Web Design · UI/UX Design
Founded in 2000, Usablenet started as a pioneer in web accessibility, evolving over time to become a leader in mobile and multichannel strategy and execution.
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SYKES
Web Development · Web Design · IT Services
Sykes Enterprises, Incorporated is a leading provider of multichannel demand generation and customer engagement services for Global 2000 companies and their end customers.
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Caresoft Global
Web Development · iOS App · Web Design
We are a global engineering solutions company working closely with major Automotive, On-Highway, Agriculture & Construction Equipment Manufacturers and Tier-I Suppliers to solve…
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Nuance Communications, Inc.
Mobile App Development · iOS App · UI/UX Design
We build technology that frees users to be their best selves and enables businesses to do their best work. In doing so, we continually bring out the best in each other.
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SendBird
Mobile App Development · Web Development · iOS App
At SendBird, we are building the most scalable and powerful chat API in the world.
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SoftServe
iOS App · UI/UX Design · E-Commerce Development
SoftServe is a digital authority that advises and provides at the cutting-edge of technology.
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Blue Prism
Web Development · Web Design · Software Development
In this digital era where start-ups are constantly disrupting markets, only the most agile and innovative enterprises survive and thrive.
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Expedia Group
Web Development · Web Design · UI/UX Design
Expedia Group (NASDAQ: EXPE) is the world's travel platform, with the power to bring the world within reach for millions of people.
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Jumio Corporation
Web Development · iOS App · Web Design
When identity matters, trust Jumio. Jumio’s mission is to make the internet a safer place by protecting the ecosystems of businesses through cutting-edge online identity…
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DDN Storage
Search Engine Optimization · Social Media Marketing · Web Development
DataDirect Networks (DDN) is the world’s leading big data storage supplier to data-intensive, global organizations.
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Okta, Inc.
Web Development · Web Design · UI/UX Design
Okta is the leading independent provider of identity for the enterprise.
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Snap Inc.
Mobile App Development · Web Development · iOS App
At Snap, we believe that reinventing the camera represents our greatest opportunity to improve the way people live and communicate.
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Manhattan Associates
Web Development · Web Design · UI/UX Design
For more than 28 years we have earned a reputation for building technology solutions that solve the most complex business problems in the supply chain, inventory and omnichannel.
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WaveAccess
Web Development · Web Design · UI/UX Design
WaveAccess is an international custom software development company that provides high-quality offshore development services since 2000.
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ToolsGroup
Web Development · Web Design · UI/UX Design
ToolsGroup is a global provider of service-driven supply chain planning and demand analytics software.
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Bluecore
Web Development · Web Design · UI/UX Design
Bluecore is a retail marketing technology company that is reimagining the way retailers communicate with shoppers.
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TUNE
Web Development · Web Design · IT Services
We build technology that powers successful marketing partnerships across mobile and web.
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MoEngage Inc.
Web Development · Web Design · UI/UX Design
MoEngage is an Intelligent Marketing Cloud, built for the Mobile-first world.
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NotifyVisitors
Mobile App Development · Web Development · iOS App
An engagement and retention software, NotifyVisitors, provides a cross-device customer involvement for various business sectors using mediums such as Web Push Notification,…
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SAS
Web Development · iOS App · Web Design
SAS is the leader in business analytics software and services, and the largest independent vendor in the business intelligence market.
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Convergys
Web Development · Web Design · UI/UX Design
Concentrix, a wholly-owned subsidiary of SYNNEX Corporation (NYSE: SNX), is a technology-enabled global business services company specializing in customer engagement and improving…
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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

VMware, Inc

Arise Virtual Solutions Inc.

Harte Hanks

UsableNet

SYKES

Caresoft Global

Nuance Communications, Inc.

SendBird

SoftServe

Blue Prism

Expedia Group

Jumio Corporation

DDN Storage

Okta, Inc.

Snap Inc.

Manhattan Associates

WaveAccess

ToolsGroup

Bluecore

TUNE

MoEngage Inc.

NotifyVisitors

SAS

Convergys