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Companies using WebSockets

20,081 companies in our data use WebSockets, and 9,823 of them name it in job posts they wrote. Hiring for it has slowed, though 9,240 job posts still named it from October 2025 to August 2026. It comes up most in Software Engineer job posts.

Data as of November 9, 2026 · Markdown version

Which companies name WebSockets in the most job posts?

Lumenalta, Luxoft and BrainRocket mention WebSockets in the most job posts. Of the five companies in the table, EPAM Systems has the most employees who list it on their profiles: 90.
Company Posts People Recent job post
Lumenalta Professional Services · first seen Dec 2023 324 0 "Senior-level experience of at least 4 years of experience with Javascript, React, Redux, Websockets, Async/Await"Senior React Developer, May 7, 2026
Luxoft Professional Services · first seen Sep 2022 315 9 "Solid networking fundamentals: TCP/IP, HTTP/1.1 and HTTP/2, WebSockets, TLS, DNS, load balancers, latency and packet loss."Senior Software Development Engineer in Test(Backend), Nov 5, 2026
BrainRocket Scientific and Technical Services · first seen Aug 2023 225 6 "✔️ Familiar with REST, GraphQL, and WebSockets."Senior Full Stack (Node/React) Developer, Jun 9, 2026
EPAM Systems Professional Services · first seen Aug 2022 199 90 "Background in building GenAI user experiences, conversational UX, and real-time response streaming interfaces (SSE/WebSockets)"Lead JavaScript Full-Stack Engineer, Oct 24, 2026
Wits Innovation Lab Professional Services · first seen Jul 2023 138 2 "API Development : Build and integrate APIs using technologies like RestAPIs, Protobuf, gRPC, WebSockets, or GraphQL."sr node js developer, Aug 15, 2025
Showing 1 to 5 of 9,823 companies with job posts Sign up to see all companies using WebSockets ›

What else do we know about WebSockets?

Is hiring for WebSockets growing?

WebSockets turned up in a shrinking share of job posts: 4.2 in every 10,000 job posts from June to August 2026, compared with 4.7 from March to May. From October to December 2025 it was 5.3.
Share of job posts naming WebSockets by month, October 2025 to August 2026, in job posts in every 10,000 Moves from 5.0 in October 2025 to 4.2 in August 2026, in job posts in every 10,000. 6.4 4.8 3.2 1.6 0 4.2 Oct '25 Nov Dec Jan '26 Feb Mar Apr May Jun Jul Aug
Show the data
MonthJob posts naming WebSocketsAll job postsPer 10,000
Oct 20257101,413,6735.0
Nov 20251,0151,822,1195.6
Dec 20256641,236,1035.4
Jan 20269681,828,0025.3
Feb 20269951,856,6475.4
Mar 20268651,850,7114.7
Apr 20268531,728,8864.9
May 20268231,821,5094.5
Jun 20268071,909,4964.2
Jul 20267641,815,1804.2
Aug 20267761,835,6984.2

How many companies named WebSockets in a job post for the first time in recent months?

WebSockets showed up in job posts at 589 companies for the first time from June to August 2026, and 656 in the three months before. Of the 9,823 companies whose job posts name it, 6% first named it from June to August.
March to May 2026 656
June to August 2026 589
October 2025 to August 2026 2,406

Companies whose first job post naming it appeared in that period. Recruiters, staffing firms and job boards are left out.

How do we know which companies use WebSockets?

Employees' profiles add 10,258 companies to the 9,823 that name WebSockets in job posts. 1,353 show up in both job posts and employees' profiles.
How we know Companies Share
Job posts name WebSockets
9,823 49%
Employees' profiles list WebSockets
10,258 51%

20,081 companies. Each is counted once, under the strongest evidence we have for it.

What size are the companies that use WebSockets?

Companies with fewer than 50 employees are 1.9 times as common among WebSockets users as on the typical tech page. 1,488 of its companies have more than 5,000 employees.

Share of its companies Typical tech page

ShareTypical
Under 50 employees
42% 22%
50 to 999
41% 38%
1,000 to 5,000
10% 17%
Over 5,000
7.4% 23%

Where are WebSockets companies based?

The United States has the most WebSockets companies (33%), but Spain stands out: 3.4% of them, against 1.8% on the typical tech page. Its companies are based in 145 countries and territories.
ShareTypical
United States
33% 43%
India
11% 6.9%
United Kingdom
5.6% 6.4%
Germany
4.2% 4.4%
Brazil
3.6% 2.8%
Spain
3.4% 1.8%

Companies in 145 countries and territories. Shares are of companies with a known headquarters country.

Show the data
CountryCompaniesShareTypical tech page
United States6,20533%43%
India2,06111%6.9%
United Kingdom1,0525.6%6.4%
Germany8014.2%4.4%
Brazil6753.6%2.8%
Spain6483.4%1.8%

Which teams work with WebSockets?

Job posts for WebSockets point to engineering teams far more than any other, at 155 companies. Development teams are second, at 60 companies, and technology teams third, at 55.
Team Companies
Engineering
155
Development
60
Technology
55
R&D
52
Software engineering
43
Software
31

What else do WebSockets companies use?

WebSockets companies are 38 times as likely as similar companies to use Socket.io: 6.3% of them, against 0.16%. WebRTC is 25 times as common as usual, at 11%.

Share of the 8,038 WebSockets companies counted here whose job posts also name the tool Typical for companies the same size

Tool Also name it Typical Times as common
Socket.io 505 companies
6.3% 0.16% 38x
WebRTC 911 companies
11% 0.45% 25x
Zustand 997 companies
12% 0.55% 23x
WebSocket 1,299 companies
16% 0.85% 19x
Tool Also name it Typical Times as common
Context API 884 companies
11% 0.59% 19x
Bloc 426 companies
5.3% 0.29% 18x
MobX 662 companies
8.2% 0.47% 17x
Three.js 441 companies
5.5% 0.36% 15x

Which companies started naming WebSockets in job posts recently?

Between April and August 2026, 493 companies with 50 or more employees first named WebSockets in a job post, 69 of them with more than 5,000 employees. Among the new commercial companies, ISB Vietnam Company (IVC) posted the most jobs naming it: 10.
AI native any size · 42 new
Company Posts
Level AI 5
Gamma 5
ElevenLabs 3
VODA.ai® 3
Cekura 3
Commercial 50 to 999 employees · 334 new
Company Posts
ISB Vietnam Company (IVC) 10
AutoPayPlus 8
LVT (LiveView Technologies) 5
K2 Space Corporation 5
Audio Enhancement 5
Mid-market 1,000 to 5,000 employees · 90 new
Company Posts
GyanSys Inc. 8
Drata 7
Questrade Financial Group 6
Lyra Health 5
d-Core Network 4
Enterprise over 5,000 employees · 69 new
Company Posts
Bajaj Finserv 5
Baker Hughes 5
Epsilon 5
Deutsche Telekom 4
Policybazaar.com 4

Companies that named WebSockets in a job post for the first time between April and August 2026, ranked by their job posts in those months. AI-native companies get a group of their own, whatever their size. Recruiters and job boards are left out.

Which roles mention WebSockets most?

Software Engineer is the role behind 48% of the job posts that mention WebSockets. Frontend Engineer is second, at 14%.
Role Share Posts
Software Engineer
48% 4,454
Frontend Engineer
14% 1,312
Mobile Developer
7.9% 726
AI Engineer
4.6% 421
Software Development Engineer in Test
1.9% 175
Software Architect
1.4% 127
Show the data
RoleShareOct 2025 to Aug 2026Mar to May 2026Jun to Aug 2026
Software Engineer48%4,4541,1181,029
Frontend Engineer14%1,312307274
Mobile Developer7.9%726203150
AI Engineer4.6%421129140
Software Development Engineer in Test1.9%1755948
Software Architect1.4%1274117

Which project themes come up in WebSockets job posts?

After broad digital transformation work, teams hiring for WebSockets most often mention Microservices Migration, in 1,004 job posts. After that comes Generative AI, with 883.
Project theme Job posts
Digital Transformation 1,955
Microservices Migration 1,004
Generative AI 883
Frontend Migration 236
About this data

Sumble built this page. Sumble gives sales, marketing and other GTM teams technographics and hiring signals for the companies they sell to: the technologies each company uses, which teams are hiring and for what, and who reports to whom. That helps a team know who to contact, why now, and what to say.

Sumble covers more than 3.6 million companies, 93 million job posts collected since 2022 and 194 million employee profiles, and tracks more than 37,000 technologies. It finds which technologies a company uses by reading its job posts and its employees' public profiles.

Sumble has a free plan, and the same data is available through its API and MCP server.

A company counts when its own job posts or its employees' public profiles name the technology. Hiring is that technology's share of all job posts collected each month. Quotes are copied word for word from the companies' job posts.

Every figure on this page comes from Sumble's own analysis, and you won't find it outside Sumble.