102,993 companies in our data use Kotlin, and 31,317 of them name it in job posts they wrote. Hiring for it is steady, with 48,332 job posts naming it from October 2025 to August 2026. It comes up most in Software Engineer job posts.
Which companies name Kotlin in the most job posts?
Among the companies with the most job posts naming Kotlin are EPAM Systems (3,621), Luxoft (2,253) and Google (2,231). Sansan株式会社 is the newest of the five companies in the table, with its first job post naming it in June 2023.
CompanyPostsPeopleRecent job post
EPAM SystemsProfessional Services · first seen Aug 20223,621790
"Develop and enhance full stack features using Java, Kotlin and modern JavaScript frameworks"Senior Full Stack Developer (Kotlin + React/Angular), Oct 28, 2026
LuxoftProfessional Services · first seen Aug 20222,253182
"Develop new features in Java and Kotlin for Spring Boot Microservices, as well as maintain existing ones"Senior/Lead Java Developer, Oct 28, 2026
GoogleScientific and Technical Services · first seen Jul 20222,2313,000
"Development experience working with Kotlin or Java."Senior Android Infrastructure Software Developer, Nov 7, 2026
Sansan株式会社Scientific and Technical Services · first seen Jun 20232,12022
"静的型付け言語(Java、Kotlin、C#、Go、TypeScriptなど)を用いた開発経験"Engineer Open Positions: Potential-Focused, Oct 21, 2026
AmazonRetail Trade · first seen Jul 20221,2512,888
"We develop primarily in Java and Kotlin."Software Development Engineer, Selling Partner Promotions, Oct 31, 2026
Kotlin holds a steady place in hiring. 23 in every 10,000 job posts named it from June to August 2026, against 25 from March to May.
Show the data
Month
Job posts naming Kotlin
All job posts
Per 10,000
Oct 2025
3,733
1,413,673
26
Nov 2025
5,053
1,822,119
28
Dec 2025
3,423
1,236,103
28
Jan 2026
5,100
1,828,002
28
Feb 2026
5,062
1,856,647
27
Mar 2026
4,742
1,850,711
26
Apr 2026
4,350
1,728,886
25
May 2026
4,225
1,821,509
23
Jun 2026
4,222
1,909,496
22
Jul 2026
4,291
1,815,180
24
Aug 2026
4,131
1,835,698
23
How many companies named Kotlin in a job post for the first time in recent months?
In the three months to August 2026, 855 companies posted about Kotlin for the first time. From March to May, 930 did. The 855 from June to August are 2.7% of all 31,317 companies whose job posts name it.
March to May 2026930
June to August 2026855
October 2025 to August 20263,571
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 Kotlin?
Most of these companies come from employees' profiles: 70% have no job post naming Kotlin. 14,706 show up in both job posts and employees' profiles.
How we knowCompaniesShare
Job posts name Kotlin
31,31730%
Employees' profiles list Kotlin
71,67670%
102,993 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use Kotlin?
The largest group of Kotlin users is companies with fewer than 50 employees (48%), more than on the typical tech page. The second-largest group is companies with 50 to 999 employees, at 41%.
Share of its companies
Typical tech page
ShareTypical
Under 50 employees
48%22%
50 to 999
41%38%
1,000 to 5,000
8.1%17%
Over 5,000
3.5%23%
Where are Kotlin companies based?
Kotlin has an unusually large following in Brazil: 4.7% of its companies, against 2.8% on the typical tech page. Its companies are based in 199 countries and territories.
ShareTypical
United States
24%43%
India
11%6.9%
Germany
5.2%4.4%
United Kingdom
5%6.4%
Brazil
4.7%2.8%
France
3.8%4.6%
Companies in 199 countries and territories. Shares are of companies with a known headquarters country.
Show the data
Country
Companies
Share
Typical tech page
United States
23,342
24%
43%
India
10,339
11%
6.9%
Germany
4,987
5.2%
4.4%
United Kingdom
4,757
5%
6.4%
Brazil
4,498
4.7%
2.8%
France
3,601
3.8%
4.6%
Which teams work with Kotlin?
Engineering teams are the most common home for Kotlin, at 794 companies, followed by mobile and android. Next are mobile development and development teams, at 301 and 288 companies.
TeamCompanies
Engineering
794
Mobile
567
Android
317
Mobile development
301
Development
288
Technology
267
What else do Kotlin companies use?
Android Studio, Objective-C and Swift show up far more often at Kotlin companies than at companies of the same size. Espresso comes fourth, 14 times as common as usual, at 7.7%.
Share of the 25,659 Kotlin companies counted here whose job posts also name the tool
Typical for companies the same size
Which companies started naming Kotlin in job posts recently?
From April to August 2026, 610 companies with 50 or more employees posted their first job naming Kotlin: 468 commercial, 101 mid-market and 41 enterprise. Xe.com leads the new commercial companies, with 78 job posts from April to August.
Companies that named Kotlin 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 Kotlin most?
Kotlin is showing up in more AI Engineer job posts: 327 from June to August 2026, up from 174 from March to May. The top four roles cover 71% of these job posts.
RoleSharePosts
Software Engineer
36%17,493
Mobile Developer
30%14,679
Software Development Engineer in Test
2.5%1,199
Engineer
1.9%927
Frontend Engineer
1.5%745
AI Engineer
1.5%742
Show the data
Role
Share
Oct 2025 to Aug 2026
Mar to May 2026
Jun to Aug 2026
Software Engineer
36%
17,493
4,554
4,264
Mobile Developer
30%
14,679
3,929
3,245
Software Development Engineer in Test
2.5%
1,199
303
237
Engineer
1.9%
927
263
272
Frontend Engineer
1.5%
745
197
120
AI Engineer
1.5%
742
174
327
Which project themes come up in Kotlin job posts?
13,817 job posts naming Kotlin describe broad digital transformation, and 5,577 describe Microservices Migration work. Data Infrastructure Migration is next, in 1,603 job posts.
Project themeJob posts
Digital Transformation13,817
Microservices Migration5,577
Data Infrastructure Migration1,603
Generative AI1,034
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.
