998 companies mention Haskell in job posts they wrote. Another 21,327 companies show up through employees' public profiles. Hiring for it is steady, with 877 job posts naming it from October 2025 to August 2026. It comes up most in Software Engineer job posts.
Which companies name Haskell in the most job posts?
The five companies with the most job posts naming Haskell are Standard Chartered, Anduril Industries, SYSTEM I CO., LTD., Mercury and Luxoft. Of the five companies in the table, Standard Chartered has the most employees who list it on their profiles: 94.
CompanyPostsPeopleRecent job post
Standard CharteredFinance and Insurance · first seen Aug 202226194
"We use Haskell (or our in-house variant, Mu) for practically everything we do."Quantitative Developer (Singapore, Hong Kong), Nov 4, 2026
Anduril IndustriesManufacturing · first seen Jul 202224437
"Experience (professional or in the setting of an open source community) working with typed functional programming languages (Haskell or Rust)"Staff Embedded Engineer, EW, Oct 21, 2026
SYSTEM I CO., LTD.Professional Services · first seen Jun 20232430
"バックエンド：Java／PHP／Ruby／Python／Go／Haskell"[Osaka: Remote] Project Leader, Project Manager, Apr 9, 2026
Mercuryfirst seen Jan 202311389
"Is familiar with our tech stack (especially Haskell), or excited to learn it"Senior Engineering Manager - Credit Cards, Nov 4, 2026
LuxoftProfessional Services · first seen Dec 20239716
"Develop robust, high-performance functional software using Haskell / Mu"haskell developer, Mar 22, 2026
Haskell holds a steady place in hiring. 0.44 in every 10,000 job posts named it from June to August 2026, against 0.40 from March to May. From October to December 2025 it was 0.52.
Show the data
Month
Job posts naming Haskell
All job posts
Per 10,000
Oct 2025
87
1,413,673
0.62
Nov 2025
91
1,822,119
0.50
Dec 2025
56
1,236,103
0.45
Jan 2026
95
1,828,002
0.52
Feb 2026
88
1,856,647
0.47
Mar 2026
62
1,850,711
0.34
Apr 2026
68
1,728,886
0.39
May 2026
88
1,821,509
0.48
Jun 2026
82
1,909,496
0.43
Jul 2026
94
1,815,180
0.52
Aug 2026
66
1,835,698
0.36
How many companies named Haskell in a job post for the first time in recent months?
Haskell showed up in job posts at 25 companies for the first time from June to August 2026, and 25 in the three months before. The 25 from June to August are 2.5% of all 998 companies whose job posts name it.
March to May 202625
June to August 202625
October 2025 to August 202693
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 Haskell?
96% of the companies here are known from employees' profiles alone, and 4.5% name Haskell in their own job posts. 426 show up in both job posts and employees' profiles.
How we knowCompaniesShare
Job posts name Haskell
9984.5%
Employees' profiles list Haskell
21,32796%
22,325 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use Haskell?
Haskell skews toward smaller firms. 36% of its users are companies with fewer than 50 employees, against 26% on the typical tech page. 170 of its companies have more than 5,000 employees. These counts cover the 998 companies whose job posts name it.
Share of its companies
Typical tech page
ShareTypical
Under 50 employees
36%26%
50 to 999
36%37%
1,000 to 5,000
11%15%
Over 5,000
17%22%
Where are Haskell companies based?
The United States alone has 47% of Haskell companies; the rest are spread across 54 other countries and territories. These shares cover the 998 companies whose job posts name it.
ShareTypical
United States
47%48%
United Kingdom
7.1%6.3%
India
5.9%7.5%
Germany
5.3%4.4%
France
5%5%
Canada
3.2%3.8%
Companies in 55 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
427
47%
48%
United Kingdom
65
7.1%
6.3%
India
54
5.9%
7.5%
Germany
49
5.3%
4.4%
France
46
5%
5%
Canada
29
3.2%
3.8%
Which teams work with Haskell?
Haskell job posts name engineering and platform teams at 32 and 17 companies. Development teams are third, at 8 companies.
TeamCompanies
Engineering
32
Platform
17
Development
8
Infrastructure
7
Software engineering
7
Product
6
What else do Haskell companies use?
Haskell companies are 398 times as likely as similar companies to use OCaml: 24% of them, against 0.06%. F# is 117 times as common as usual, at 19%.
Share of the 682 Haskell companies counted here whose job posts also name the tool
Typical for companies the same size
Which companies started naming Haskell in job posts recently?
28 companies with 50 or more employees picked up Haskell in their job posts from April to August 2026. Another 3 were AI-native companies, which we list separately.
Companies that named Haskell 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 Haskell most?
Software Engineer roles lead with 41% of job posts naming Haskell, but Applied Scientist roles are catching up: 34 from June to August 2026, against 8 from March to May. The top four roles cover 50.4% of these job posts.
RoleSharePosts
Software Engineer
41%357
Applied Scientist
4.8%42
Product Manager
2.5%22
Engineer
2.4%21
Penetration Tester
2.4%21
Financial Analyst
2.3%20
Show the data
Role
Share
Oct 2025 to Aug 2026
Mar to May 2026
Jun to Aug 2026
Software Engineer
41%
357
71
73
Applied Scientist
4.8%
42
8
34
Product Manager
2.5%
22
7
12
Engineer
2.4%
21
6
4
Penetration Tester
2.4%
21
8
5
Financial Analyst
2.3%
20
9
5
Which project themes come up in Haskell job posts?
After broad digital transformation work, teams hiring for Haskell most often mention Microservices Migration, in 50 job posts. Generative AI is next, in 32 job posts.
Project themeJob posts
Digital Transformation261
Microservices Migration50
Generative AI32
Cloud Cost Optimization30
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.
