Job posts from 339 companies name OCaml. Counting companies found through employees' public profiles too, the total is 9,336. From October 2025 to August 2026, 236 job posts named it. Software Engineer roles mention it most.
Among the companies with the most job posts naming OCaml are Anduril Industries (77), SimCorp (46) and Ahrefs (43). Of the five companies in the table, Anduril Industries has the most employees who list it on their profiles: 27.
CompanyPostsPeopleRecent job post
Anduril IndustriesManufacturing · first seen Sep 20227727
"Experience (professional or in the setting of an open source community) working with typed functional programming languages (Haskell, Scala, F#, OCaml, Rust, etc.)"embedded haskell engineer, ew, Jul 7, 2026
SimCorpScientific and Technical Services · first seen Jun 2023467
"Implement financial contract models in our OCaml-based domain-specific language, defining their business logic, database mapping, and user-interface layout."Senior Software Engineer – OCaml/C# – OTC Core, Nov 7, 2026
AhrefsScientific and Technical Services · first seen Oct 20224323
"You'll work remotely within our Middle-end / Tooling team, focusing on improving the observability of Dune, the OCaml build system."backend engineering intern - ocaml, Apr 27, 2026
GrabScientific and Technical Services · first seen Aug 2022416
"…be a good coder in any language (C++, C, Java, Scala, Rust, Haskell, OCaml, Erlang, Python, Ruby, PHP, Node.JS, C#, etc.), but willing to work…"software engineer, backend, Oct 24, 2026
CEAUtilities · first seen Jun 20233914
"CaiSAR is written in Ocaml, PyRAT is written in Python3."M1/M2 Internship in Computer Science / Artificial Intelligence / Machine Learning (M/F), Nov 1, 2025
OCaml appeared in 0.10 in every 10,000 job posts from June to August 2026, against 0.12 from March to May. These are small numbers of job posts, so a few companies can move them.
Show the data
Month
Job posts naming OCaml
All job posts
Per 10,000
Oct 2025
24
1,413,673
0.17
Nov 2025
33
1,822,119
0.18
Dec 2025
13
1,236,103
0.11
Jan 2026
23
1,828,002
0.13
Feb 2026
21
1,856,647
0.11
Mar 2026
22
1,850,711
0.12
Apr 2026
22
1,728,886
0.13
May 2026
21
1,821,509
0.12
Jun 2026
11
1,909,496
0.06
Jul 2026
19
1,815,180
0.10
Aug 2026
27
1,835,698
0.15
How many companies named OCaml in a job post for the first time in recent months?
Job posts named OCaml for the first time at 10 companies from June to August 2026, against 20 from March to May. That brings the companies naming it for the first time since October 2025 to 48, through August 2026.
March to May 202620
June to August 202610
October 2025 to August 202648
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 OCaml?
Of the 9,336 companies here, 8,997 are known from what employees list on their profiles. 131 show up in both job posts and employees' profiles.
How we knowCompaniesShare
Job posts name OCaml
3393.6%
Employees' profiles list OCaml
8,99796%
9,336 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use OCaml?
Companies with fewer than 50 employees are 1.3 times as common among OCaml users as on the typical tech page. 70 of its companies have more than 5,000 employees. These counts cover the 339 companies whose job posts name it.
Share of its companies
Typical tech page
ShareTypical
Under 50 employees
33%26%
50 to 999
35%37%
1,000 to 5,000
12%15%
Over 5,000
21%22%
Where are OCaml companies based?
Beyond the United States (49.6%), OCaml is unusually common in France, at 12% of its companies. Canada is less common than usual, at 2.5% against 3.8% on the typical tech page. These shares cover the 339 companies whose job posts name it.
ShareTypical
United States
49.6%48%
France
12%5%
United Kingdom
9.2%6.3%
Germany
3.8%4.4%
Singapore
2.9%1.1%
Canada
2.5%3.8%
Companies in 37 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
156
49.6%
48%
France
37
12%
5%
United Kingdom
29
9.2%
6.3%
Germany
12
3.8%
4.4%
Singapore
9
2.9%
1.1%
Canada
8
2.5%
3.8%
Which teams work with OCaml?
OCaml turns up most in job posts for engineering, qla and technology teams.
TeamCompanies
Engineering
6
Qla
4
Technology
4
Backend
3
Allocation
2
AWS utility computing (UC)
2
What else do OCaml companies use?
Compared with companies of the same size, OCaml companies stand out for using Haskell and F#. Erlang comes third, 98 times as common as usual, at 20%.
Share of the 229 OCaml companies counted here whose job posts also name the tool
Typical for companies the same size
Which companies started naming OCaml in job posts recently?
16 companies with 50 or more employees picked up OCaml in their job posts from April to August 2026. Among the new enterprise companies, McKinsey & Company posted the most jobs naming it: 3.
Companies that named OCaml 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 OCaml most?
Software Engineer is the role behind 44% of the job posts that mention OCaml. Embedded Engineer is second, at 6.4%.
RoleSharePosts
Software Engineer
44%103
Embedded Engineer
6.4%15
Researcher
5.5%13
Applied Scientist
5.1%12
AI Engineer
2.1%5
Engineer
2.1%5
Show the data
Role
Share
Oct 2025 to Aug 2026
Mar to May 2026
Jun to Aug 2026
Software Engineer
44%
103
29
20
Embedded Engineer
6.4%
15
3
1
Researcher
5.5%
13
3
2
Applied Scientist
5.1%
12
1
11
AI Engineer
2.1%
5
0
2
Engineer
2.1%
5
2
0
Which project themes come up in OCaml job posts?
33 job posts naming OCaml describe Microservices Migration work, the most common theme after broad digital transformation. After that comes Generative AI, with 12.
Project themeJob posts
Digital Transformation109
Microservices Migration33
Generative AI12
Cloud Cost Optimization6
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.
