# Companies using Socket.io

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.

Data as of November 9, 2026. Source: Sumble.

## 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.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [bellFace.inc](https://sumble.com/orgs/ヘルフェイス株式会社) | 125 | 0 | "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) |
| [Maropost](https://sumble.com/orgs/maropost) | 47 | 4 | "Network protocols and libraries: HTTP, WebSocket, Socket.io." (Senior Software Engineer (.NET) - Remote, IND, May 12, 2026) |
| [Wits Innovation Lab](https://sumble.com/orgs/wits-innovation-lab) | 45 | 1 | "Expertise in Node.js and frameworks like Express, Koa, Socket.io" (Interesting Job Opportunity: Full Stack Developer - MERN Stack Technologies, Sep 1, 2025) |
| [Guidepoint](https://sumble.com/orgs/guidepoint) | 38 | 4 | "Collaborate closely with front-end teams (React, Socket.io, NodeJS) on full-stack solutions." (php backend developer, Jan 12, 2026) |
| [Vidyalai](https://sumble.com/orgs/vidyalai) | 37 | 0 | "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) |

## Is hiring for Socket.io growing?

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.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| 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.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 104 |
| June to August 2026 | 83 |
| October 2025 to August 2026 | 352 |

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 know | Companies | Share |
|---|---:|---:|
| Job posts name Socket.io | 1,827 | 6.4% |
| Employees' profiles list Socket.io | 26,822 | 94% |

## 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.

| Size | Share | Typical tech page |
|---|---:|---:|
| 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.

| 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.

| Team | Companies |
|---|---:|
| Engineering | 23 |
| Development | 20 |
| R&D | 9 |
| Software development | 8 |
| Backend | 6 |
| Core engineering | 6 |

## 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.

| 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 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.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [Blitzy](https://sumble.com/orgs/blitzyai) | 2 |
| AI native | [intella](https://sumble.com/orgs/intellaworld) | 2 |
| AI native | [ByondPitch](https://sumble.com/orgs/my-spitch) | 1 |
| Commercial | [REVEL \| Renting de Coches](https://sumble.com/orgs/driverevel) | 3 |
| Commercial | [Intellectsoft](https://sumble.com/orgs/intellectsoft) | 3 |
| Commercial | [Centrical](https://sumble.com/orgs/centrical) | 3 |
| Commercial | [AP Digital Services](https://sumble.com/orgs/ap-digital-services) | 3 |
| Commercial | [Master Works](https://sumble.com/orgs/master-works) | 2 |
| Mid-market | [Melco Resorts & Entertainment](https://sumble.com/orgs/melco-resorts-&-entertainment) | 2 |
| Mid-market | [Intellias](https://sumble.com/orgs/intellias) | 1 |
| Mid-market | [Astro](https://sumble.com/orgs/astro) | 1 |
| Mid-market | [Sasken Technologies Limited](https://sumble.com/orgs/sasken) | 1 |
| Mid-market | [Torry Harris Integration Solutions](https://sumble.com/orgs/torry-harris-integration-solutions) | 1 |
| Enterprise | [HCLTech](https://sumble.com/orgs/hcltech) | 7 |
| Enterprise | [Happiest Minds Technologies](https://sumble.com/orgs/happiest-solutions) | 7 |
| Enterprise | [ServiceNow](https://sumble.com/orgs/servicenow) | 4 |
| Enterprise | [Minerva Foods](https://sumble.com/orgs/minerva-foods-com) | 4 |
| Enterprise | [PwC Acceleration Center India](https://sumble.com/orgs/pwc-acceleration-centers-in-india) | 3 |

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.

## 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.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| WebSockets | 505 | 33% | 0.88% | 38 times |
| WebSocket | 366 | 24% | 0.65% | 37 times |
| Fastify | 81 | 5.4% | 0.15% | 36 times |
| WebRTC | 180 | 12% | 0.34% | 35 times |
| Bloc | 122 | 8.1% | 0.24% | 33 times |
| Riverpod | 78 | 5.2% | 0.16% | 33 times |
| Context API | 203 | 13% | 0.47% | 29 times |
| Zustand | 181 | 12% | 0.44% | 27 times |

Shares are out of the 1,512 companies whose job posts name Socket.io, not counting firms whose job posts name almost every technology.

## 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 theme | Job posts |
|---|---:|
| Digital Transformation | 193 |
| Microservices Migration | 101 |
| Generative AI | 45 |
| Data Infrastructure Migration | 43 |

## 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.