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.
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.
CompanyPostsPeopleRecent job post
Cash AppFinance and Insurance · first seen Jul 20225094
"HTTP, JSON, gRPC, Protocol Buffers"Software Engineer, Cash App Taxes, Sep 7, 2026
EPAM SystemsProfessional Services · first seen Nov 2022471113
"Implement service-to-service communication using gRPC/protobuf and integrate HTTP/REST APIs"Senior JavaScript Full-Stack Developer, Oct 24, 2026
LuxoftProfessional Services · first seen Jul 202246123
"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
AfterpayRetail Trade · first seen Sep 20224170
"HTTP, JSON, gRPC, and Protocol Buffers"Software Engineering Manager, Identity Lifecycle, Sep 10, 2024
BlockFinance and Insurance · first seen Jul 202232417
"Protocol Buffers and shared client-server interfaces"Staff iOS Software Engineer, Bitcoin, Oct 8, 2026
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.
Show the data
Month
Job posts naming Protobuf
All job posts
Per 10,000
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.
March to May 2026238
June to August 2026254
October 2025 to August 2026799
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 knowCompaniesShare
Job posts name Protobuf
3,89834%
Employees' profiles list Protobuf
7,56866%
11,466 companies. Each is counted once, under the strongest evidence we have for it.
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.
Share of its companies
Typical tech page
ShareTypical
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.
ShareTypical
United States
45%43%
Germany
5.8%4.4%
United Kingdom
5.8%6.4%
India
5.5%6.9%
Canada
3.3%3.6%
France
3.1%4.6%
Companies in 115 countries and territories. Shares are of companies with a known headquarters country.
Show the data
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.
TeamCompanies
Engineering
79
Data platform
29
Data engineering
24
Technology
24
Platform
23
Software engineering
21
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.
Share of the 2,672 Protobuf companies counted here whose job posts also name the tool
Typical for companies the same size
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.
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.
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.
RoleSharePosts
Software Engineer
49%2,257
Data Engineer
3.2%146
Mobile Developer
3.1%145
Platform Engineer
2.6%120
Frontend Engineer
2.5%116
Engineer
2.3%104
Show the data
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 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 themeJob posts
Digital Transformation1,895
Microservices Migration1,235
Data Infrastructure Migration463
Cloud Migration159
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.
