1,827 companies name Socket.io in their own job posts. Hiring for it has slowed, though 928 job posts still named it from October 2025 to August 2026. Software Engineer is the role that names it most often.
Which companies name Socket.io in the most job posts?
The five companies with the most job posts naming Socket.io are bellFace.inc, Maropost, Wits Innovation Lab, Guidepoint and Vidyalai. Maropost is the newest of the five companies in the table, with its first job post naming it in May 2024.
CompanyPostsPeopleRecent job post
bellFace.incfirst seen Jul 20231250
"サーバーサイド：PHP 7， CakePHP， Laravel， Node.js， socket.IO， TypeScript， Go， Python， Next.js"Project Manager (web/open systems), Mar 20, 2024
MaropostScientific and Technical Services · first seen May 2024474
"Network protocols and libraries: HTTP, WebSocket, Socket.io."Senior Software Engineer (.NET) - Remote, IND, May 12, 2026
Wits Innovation LabProfessional Services · first seen Jul 2023451
"Expertise in Node.js and frameworks like Express, Koa, Socket.io"Interesting Job Opportunity: Full Stack Developer - MERN Stack Technologies, Sep 1, 2025
GuidepointProfessional Services · first seen Jul 2022384
"Collaborate closely with front-end teams (React, Socket.io, NodeJS) on full-stack solutions."php backend developer, Jan 12, 2026
VidyalaiEducational Services · first seen Dec 2023370
"Extra credit if you have proficiency in front-end technologies like React.js, Next.js, Redux, etc and proficiency in backend-end technologies like Express.js, Nest.js, Socket.io, MongoDB, etc."Full Stack Developer, Sep 17, 2026
A smaller share of job posts mentioned Socket.io from June to August 2026 than from March to May: 0.38 in every 10,000 job posts, down from 0.44. August 2026 was its lowest month since October 2025, at 0.35.
Show the data
Month
Job posts naming Socket.io
All job posts
Per 10,000
Oct 2025
85
1,413,673
0.60
Nov 2025
111
1,822,119
0.61
Dec 2025
78
1,236,103
0.63
Jan 2026
107
1,828,002
0.59
Feb 2026
99
1,856,647
0.53
Mar 2026
90
1,850,711
0.49
Apr 2026
77
1,728,886
0.45
May 2026
71
1,821,509
0.39
Jun 2026
74
1,909,496
0.39
Jul 2026
72
1,815,180
0.40
Aug 2026
64
1,835,698
0.35
How many companies named Socket.io in a job post for the first time in recent months?
From June to August 2026, 83 companies posted their first job naming Socket.io; 104 did from March to May. That brings the companies naming it for the first time since October 2025 to 352, through August 2026.
March to May 2026104
June to August 202683
October 2025 to August 2026352
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 Socket.io?
Most of these companies come from employees' profiles: 94% have no job post naming Socket.io. 1,827 name it in their own job posts.
How we knowCompaniesShare
Job posts name Socket.io
1,8276.4%
Employees' profiles list Socket.io
26,82294%
28,649 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use Socket.io?
Smaller companies stand out among Socket.io users: companies with fewer than 50 employees are 56% of them, against 26% on the typical tech page. The second-largest group is companies with 50 to 999 employees, at 33%. These counts cover the 1,827 companies whose job posts name it.
Share of its companies
Typical tech page
ShareTypical
Under 50 employees
56%26%
50 to 999
33%37%
1,000 to 5,000
5.4%15%
Over 5,000
6.1%22%
Where are Socket.io companies based?
Socket.io has an unusually large following in Pakistan: 3.2% of its companies, against 0.28% on the typical tech page. Its companies are based in 74 countries and territories. These shares cover the 1,827 companies whose job posts name it.
ShareTypical
United States
27%48%
India
27%7.5%
United Kingdom
4.6%6.3%
France
3.5%5%
Pakistan
3.2%0.28%
Turkey
2.9%0.43%
Companies in 74 countries and territories. Shares are of companies with a known headquarters country. Counts companies whose job posts name it.
Show the data
Country
Companies
Share
Typical tech page
United States
458
27%
48%
India
456
27%
7.5%
United Kingdom
76
4.6%
6.3%
France
59
3.5%
5%
Pakistan
53
3.2%
0.28%
Turkey
48
2.9%
0.43%
Which teams work with Socket.io?
The teams named most often in Socket.io job posts are engineering, development and R&D.
TeamCompanies
Engineering
23
Development
20
R&D
9
Software development
8
Backend
6
Core engineering
6
What else do Socket.io companies use?
WebSockets and WebSocket are the tools most closely tied to Socket.io. Next is Fastify: 5.4% of these companies use it, against 0.15% of similar ones.
Share of the 1,512 Socket.io companies counted here whose job posts also name the tool
Typical for companies the same size
Which companies started naming Socket.io in job posts recently?
54 companies with 50 or more employees started naming Socket.io in job posts between April and August 2026. 10 of them have more than 5,000 employees. Another 3 were AI-native companies, which we list separately.
Companies that named Socket.io 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 Socket.io most?
Software Engineer is the role behind 63% of the job posts that mention Socket.io. Software Engineer posts naming it numbered 151 from March to May 2026 and 110 from June to August.
RoleSharePosts
Software Engineer
63%583
Frontend Engineer
14%126
Mobile Developer
7.4%69
AI Engineer
1.6%15
Customer Engineer
1.3%12
Software Architect
1.1%10
Show the data
Role
Share
Oct 2025 to Aug 2026
Mar to May 2026
Jun to Aug 2026
Software Engineer
63%
583
151
110
Frontend Engineer
14%
126
31
31
Mobile Developer
7.4%
69
18
12
AI Engineer
1.6%
15
5
7
Customer Engineer
1.3%
12
3
2
Software Architect
1.1%
10
1
1
Which project themes come up in Socket.io job posts?
Digital transformation is the broadest theme in Socket.io job posts (193); the most common specific one is Microservices Migration, at 101. Generative AI is next, in 45 job posts.
Project themeJob posts
Digital Transformation193
Microservices Migration101
Generative AI45
Data Infrastructure Migration43
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.
