# Companies using Protobuf

11,466 companies in our data use Protobuf, and 3,898 of them name it in job posts they wrote. Its share of job posts held steady in the three months to August 2026; 4,611 job posts named it from October 2025 to August 2026. Software Engineer roles mention it most.

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

## Which companies name Protobuf in the most job posts?

The five companies with the most job posts naming Protobuf are Cash App, EPAM Systems, Luxoft, Afterpay and Block. Of the five companies in the table, EPAM Systems has the most employees who list it on their profiles: 113.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Cash App](https://sumble.com/orgs/cash-app) | 509 | 4 | "HTTP, JSON, gRPC, Protocol Buffers" (Software Engineer, Cash App Taxes, Sep 7, 2026) |
| [EPAM Systems](https://sumble.com/orgs/epam-systems) | 471 | 113 | "Implement service-to-service communication using gRPC/protobuf and integrate HTTP/REST APIs" (Senior JavaScript Full-Stack Developer, Oct 24, 2026) |
| [Luxoft](https://sumble.com/orgs/luxoft) | 461 | 23 | "Architect the vehicle-facing integration: REST and gRPC/protobuf APIs, Viwi, AIDL toward the Android Automotive side, OAuth2 and mTLS, client IdP integration, and the…" (AI Solution Architect - LLM Backend & Vehicle Interface, Oct 27, 2026) |
| [Afterpay](https://sumble.com/orgs/afterpay) | 417 | 0 | "HTTP, JSON, gRPC, and Protocol Buffers" (Software Engineering Manager, Identity Lifecycle, Sep 10, 2024) |
| [Block](https://sumble.com/orgs/block) | 324 | 17 | "Protocol Buffers and shared client-server interfaces" (Staff iOS Software Engineer, Bitcoin, Oct 8, 2026) |

## Is hiring for Protobuf growing?

Protobuf's share of job posts is about the same as three months earlier: 2.5 in every 10,000 job posts from June to August 2026, against 2.4 from March to May.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 316 | 1,413,673 | 2.2 |
| Nov 2025 | 440 | 1,822,119 | 2.4 |
| Dec 2025 | 305 | 1,236,103 | 2.5 |
| Jan 2026 | 425 | 1,828,002 | 2.3 |
| Feb 2026 | 472 | 1,856,647 | 2.5 |
| Mar 2026 | 417 | 1,850,711 | 2.3 |
| Apr 2026 | 416 | 1,728,886 | 2.4 |
| May 2026 | 450 | 1,821,509 | 2.5 |
| Jun 2026 | 446 | 1,909,496 | 2.3 |
| Jul 2026 | 441 | 1,815,180 | 2.4 |
| Aug 2026 | 483 | 1,835,698 | 2.6 |

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

Protobuf showed up in job posts at 254 companies for the first time from June to August 2026, and 238 in the three months before. Of the 3,898 companies whose job posts name it, 6.5% first named it from June to August.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 238 |
| June to August 2026 | 254 |
| October 2025 to August 2026 | 799 |

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 Protobuf?

66% of the companies here are known from employees' profiles alone, and 34% name Protobuf in their own job posts. 1,181 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Protobuf | 3,898 | 34% |
| Employees' profiles list Protobuf | 7,568 | 66% |

## What size are the companies that use Protobuf?

Companies with fewer than 50 employees are 1.3 times as common among Protobuf users as on the typical tech page. 1,338 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 28% | 22% |
| 50 to 999 | 46% | 38% |
| 1,000 to 5,000 | 14% | 17% |
| Over 5,000 | 12% | 23% |

## Where are Protobuf companies based?

45% of Protobuf companies are based in the United States, and 5.8% in Germany. France is less common than usual, at 3.1% against 4.6% on the typical tech page.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 4,842 | 45% | 43% |
| Germany | 628 | 5.8% | 4.4% |
| United Kingdom | 624 | 5.8% | 6.4% |
| India | 594 | 5.5% | 6.9% |
| Canada | 354 | 3.3% | 3.6% |
| France | 333 | 3.1% | 4.6% |

## Which teams work with Protobuf?

Engineering teams are by far the most common home for Protobuf, at 79 companies.

| Team | Companies |
|---|---:|
| Engineering | 79 |
| Data platform | 29 |
| Data engineering | 24 |
| Technology | 24 |
| Platform | 23 |
| Software engineering | 21 |

## Which roles mention Protobuf most?

Software Engineer roles make up 49% of the job posts that name Protobuf. The top four roles cover 58% of these job posts.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Software Engineer | 49% | 2,257 | 591 | 628 |
| Data Engineer | 3.2% | 146 | 42 | 34 |
| Mobile Developer | 3.1% | 145 | 35 | 40 |
| Platform Engineer | 2.6% | 120 | 37 | 40 |
| Frontend Engineer | 2.5% | 116 | 24 | 21 |
| Engineer | 2.3% | 104 | 23 | 22 |

## Which companies started naming Protobuf in job posts recently?

Between April and August 2026, Protobuf appeared for the first time in job posts at 268 companies: 170 commercial, 60 mid-market and 38 enterprise. Another 15 were AI-native companies, which we list separately.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [VODA.ai®](https://sumble.com/orgs/voda-ai) | 6 |
| AI native | [Code Metal](https://sumble.com/orgs/code-metal) | 4 |
| AI native | [Ema](https://sumble.com/orgs/ema-unlimited) | 3 |
| AI native | [Tutor](https://sumble.com/orgs/tutor-intelligence) | 3 |
| AI native | [PKSHA Technology](https://sumble.com/orgs/pkshatech) | 2 |
| Commercial | [CommandLink](https://sumble.com/orgs/commandlink) | 16 |
| Commercial | [WiTI](https://sumble.com/orgs/witi-chile) | 11 |
| Commercial | [Path Robotics](https://sumble.com/orgs/path-robotics) | 6 |
| Commercial | [Sela](https://sumble.com/orgs/sela-group) | 5 |
| Commercial | [Visionist, Inc.](https://sumble.com/orgs/visionist) | 5 |
| Mid-market | [Noblis](https://sumble.com/orgs/noblis) | 9 |
| Mid-market | [IDS Comercial](https://sumble.com/orgs/ids-comercial) | 9 |
| Mid-market | [The Aerospace Corporation](https://sumble.com/orgs/aerospace) | 7 |
| Mid-market | [NinjaOne](https://sumble.com/orgs/ninjaone) | 4 |
| Mid-market | [Saviynt](https://sumble.com/orgs/saviynt) | 4 |
| Enterprise | [Sopra Steria](https://sumble.com/orgs/sopra-steria) | 5 |
| Enterprise | [Concentrix](https://sumble.com/orgs/concentrix) | 4 |
| Enterprise | [Volkswagen AG](https://sumble.com/orgs/volkswagen-group) | 3 |
| Enterprise | [Live Nation Entertainment](https://sumble.com/orgs/live-nation) | 3 |
| Enterprise | [Instacart](https://sumble.com/orgs/instacart) | 3 |

Companies that named Protobuf 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 Protobuf companies use?

Bazel, Apache Avro and gRPC show up far more often at Protobuf companies than at companies of the same size. Next is Buildroot: 5.5% of these companies use it, against 0.24% of similar ones.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Bazel | 242 | 9.1% | 0.28% | 33 times |
| Apache Avro | 437 | 16% | 0.56% | 29 times |
| gRPC | 1,656 | 62% | 2.2% | 28 times |
| Buildroot | 146 | 5.5% | 0.24% | 23 times |
| Kafka Streams | 232 | 8.7% | 0.46% | 19 times |
| CMake | 422 | 16% | 0.84% | 19 times |
| Pulsar | 164 | 6.1% | 0.33% | 19 times |
| Apache Druid | 134 | 5% | 0.27% | 18 times |

Shares are out of the 2,672 companies whose job posts name Protobuf, not counting firms whose job posts name almost every technology.

## Which project themes come up in Protobuf job posts?

After broad digital transformation work, teams hiring for Protobuf most often mention Microservices Migration, in 1,235 job posts. Data Infrastructure Migration is next, in 463 job posts.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 1,895 |
| Microservices Migration | 1,235 |
| Data Infrastructure Migration | 463 |
| Cloud Migration | 159 |

## 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.