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Companies using FreeRTOS

We found 11,116 companies that use FreeRTOS. 4,174 of them name it in their own job posts, and the rest through employees' public profiles. Its share of job posts held steady in the three months to August 2026; 4,831 job posts named it from October 2025 to August 2026. Embedded Engineer roles mention it most.

Data as of November 9, 2026 · Markdown version

Which companies name FreeRTOS in the most job posts?

Qualcomm, Altran and ADENTIS mention FreeRTOS in the most job posts. Of the five companies in the table, Qualcomm has the most employees who list it on their profiles: 317.
Company Posts People Recent job post
Qualcomm Scientific and Technical Services · first seen Sep 2022 344 317 "Experience with Linux, Android, QNX, FreeRTOS, ThreadX, or Zephyr."Performance Engineer, Staff, Nov 1, 2026
Altran Professional Services · first seen Jun 2023 188 83 "Design, implement, and optimize firmware for RTOS-based applications (FreeRTOS or equivalent)."Embedded C Firmware Developer, Nov 5, 2026
ADENTIS Professional Services · first seen Dec 2023 170 2 "Vous êtes familier d’OS temps réel (FreeRTOS) et des protocoles de communication (CAN, TCP/IP)."embedded software engineer, Oct 27, 2026
Amazon Retail Trade · first seen Aug 2022 155 91 "You will design, implement, and optimize software for real-time operating systems such as FreeRTOS, ThreadX, or Zephyr."Senior Embedded Software Engineer , Fauna, Oct 24, 2026
NXP Semiconductors Manufacturing · first seen Jul 2022 141 91 "Build and test secure key provisioning applications running on FreeRTOS and Zephyr RTOS."Junior Embedded Software Engineer - Secure IoT Firmware (m/f/d), Oct 21, 2026
Showing 1 to 5 of 4,174 companies with job posts Sign up to see all companies using FreeRTOS ›

What else do we know about FreeRTOS?

Is hiring for FreeRTOS growing?

FreeRTOS's share of job posts is about the same as three months earlier: 2.7 in every 10,000 job posts from June to August 2026, against 2.6 from March to May. From October to December 2025 it was 2.3.
Share of job posts naming FreeRTOS by month, October 2025 to August 2026, in job posts in every 10,000 Moves from 2.1 in October 2025 to 2.5 in August 2026, in job posts in every 10,000. 3.2 2.4 1.6 0.81 0 2.5 Oct '25 Nov Dec Jan '26 Feb Mar Apr May Jun Jul Aug
Show the data
MonthJob posts naming FreeRTOSAll job postsPer 10,000
Oct 20252971,413,6732.1
Nov 20254441,822,1192.4
Dec 20252871,236,1032.3
Jan 20264421,828,0022.4
Feb 20264721,856,6472.5
Mar 20264861,850,7112.6
Apr 20264311,728,8862.5
May 20264931,821,5092.7
Jun 20265361,909,4962.8
Jul 20264871,815,1802.7
Aug 20264561,835,6982.5

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

Job posts named FreeRTOS for the first time at 266 companies from June to August 2026, against 242 from March to May. That brings the companies naming it for the first time since October 2025 to 899, through August 2026.
March to May 2026 242
June to August 2026 266
October 2025 to August 2026 899

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 FreeRTOS?

We found 11,116 companies that use FreeRTOS, 6,942 of them through employees' profiles alone. 1,283 show up in both job posts and employees' profiles.
How we know Companies Share
Job posts name FreeRTOS
4,174 38%
Employees' profiles list FreeRTOS
6,942 62%

11,116 companies. Each is counted once, under the strongest evidence we have for it.

What size are the companies that use FreeRTOS?

FreeRTOS skews toward smaller firms. 36% of its users are companies with fewer than 50 employees, against 22% on the typical tech page. 979 of its companies have more than 5,000 employees.

Share of its companies Typical tech page

ShareTypical
Under 50 employees
36% 22%
50 to 999
43% 38%
1,000 to 5,000
12% 17%
Over 5,000
8.8% 23%

Where are FreeRTOS companies based?

Beyond the United States (29%), FreeRTOS is unusually common in Germany, at 7.2% of its companies. India is second, at 10%.
ShareTypical
United States
29% 43%
India
10% 6.9%
Germany
7.2% 4.4%
France
6.6% 4.6%
United Kingdom
4.6% 6.4%
Canada
4.1% 3.6%

Companies in 113 countries and territories. Shares are of companies with a known headquarters country.

Show the data
CountryCompaniesShareTypical tech page
United States3,10629%43%
India1,07010%6.9%
Germany7677.2%4.4%
France6976.6%4.6%
United Kingdom4874.6%6.4%
Canada4354.1%3.6%

Which teams work with FreeRTOS?

FreeRTOS job posts name R&D and engineering teams at 120 and 80 companies. Firmware teams follow, at 75 companies.
Team Companies
R&D
120
Engineering
80
Firmware
75
Software
55
Embedded software
51
Product development
29

What else do FreeRTOS companies use?

9.7% of FreeRTOS companies also use ThreadX, against 0.08% of similar companies. Next is VxWorks: 13% of these companies use it, against 0.18% of similar ones.

Share of the 3,215 FreeRTOS companies counted here whose job posts also name the tool Typical for companies the same size

Tool Also name it Typical Times as common
ThreadX 311 companies
9.7% 0.08% 127x
VxWorks 433 companies
13% 0.18% 75x
ARM Cortex 233 companies
7.2% 0.11% 68x
Buildroot 419 companies
13% 0.2% 66x
Tool Also name it Typical Times as common
STM32 1,049 companies
33% 0.5% 66x
ESP32 586 companies
18% 0.29% 63x
UART 1,984 companies
62% 1.2% 53x
LVDS 220 companies
6.8% 0.13% 53x

Which companies started naming FreeRTOS in job posts recently?

222 companies with 50 or more employees started naming FreeRTOS in job posts between April and August 2026. 33 of them have more than 5,000 employees. Another 4 were AI-native companies, which we list separately.
AI native any size · 4 new
Company Posts
Google DeepMind 1
Deepgram 1
Moray 1
Lodestar 1
Commercial 50 to 999 employees · 155 new
Company Posts
Canaan Inc. 7
slashwhy 6
ADASI 5
ZURU Tech 5
Command Post Technologies, Inc 5
Mid-market 1,000 to 5,000 employees · 34 new
Company Posts
WNC Corporation 8
Franklin Electric 6
Bosch Romania 4
Wissen Technology 3
Cubic Transportation Systems 3
Enterprise over 5,000 employees · 33 new
Company Posts
Uber 5
PwC India 5
Marmon Holdings, Inc. 5
Ericsson 4
Alliant Insurance Services 4

Companies that named FreeRTOS 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 FreeRTOS most?

Embedded Engineer is the most common role, in 34% of job posts naming FreeRTOS. Embedded Engineer posts naming it numbered 438 from March to May 2026 and 506 from June to August.
Role Share Posts
Embedded Engineer
34% 1,655
Firmware Engineer
28% 1,346
Software Engineer
13% 616
Hardware Engineer
1.4% 66
Software Development Engineer in Test
1.3% 61
Product Security
1.1% 54
Show the data
RoleShareOct 2025 to Aug 2026Mar to May 2026Jun to Aug 2026
Embedded Engineer34%1,655438506
Firmware Engineer28%1,346405409
Software Engineer13%616168169
Hardware Engineer1.4%661714
Software Development Engineer in Test1.3%612121
Product Security1.1%54918

Which project themes come up in FreeRTOS job posts?

Apart from broad digital transformation work, Microservices Migration comes up most in job posts naming FreeRTOS, in 11 of them. Generative AI is next, in 8 job posts.
Project theme Job posts
Digital Transformation 350
Microservices Migration 11
Generative AI 8
Cloud Cost Optimization 5
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.