# Companies using OpenFOAM

9,646 companies in our data use OpenFOAM, and 1,456 of them name it in job posts they wrote. Hiring for it is growing, with 1,192 job posts naming it from October 2025 to August 2026. Mechanical Engineer roles mention it most.

Data as of November 9, 2026. Source: Sumble.

## Which companies name OpenFOAM in the most job posts?

Among the companies with the most job posts naming OpenFOAM are WSP (55), Framatome (51) and AECOM (50). Of the five companies in the table, Framatome has the most employees who list it on their profiles: 46.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [WSP](https://sumble.com/orgs/wsp) | 55 | 22 | "Demonstrated experience in understanding and using CFD analysis software (FloEFD, STAR CCM+, Fluent, FDS, OpenFOAM, 6SigmaRoom)" (CFD Analyst (Mission Critical/Data Center), Sep 12, 2026) |
| [Framatome](https://sumble.com/orgs/framatome) | 51 | 46 | "Connaissance d’un code CFD acquise lors d’un projet interne ou d’un cours dédié : STAR-CCM+, Fluent, OpenFOAM ou autre ;" (Internship - CFD calculation engineer (star-ccm+) - CFD modeling of a mechanical exciter (m/f), Oct 22, 2026) |
| [AECOM](https://sumble.com/orgs/aecom) | 50 | 15 | "Proficiency with at least one data-center or general-purpose CFD platform, such as Cadence 6SigmaDCX, Ansys Fluent, Ansys CFX, or OpenFOAM, and the ability to learn and apply project-required tools." (Principal Mechanical Engineer (CFD) - Data Centers, Nov 1, 2026) |
| [Oak Ridge National Laboratory](https://sumble.com/orgs/oak-ridge-national-laboratory) | 42 | 16 | "Computational or process modeling using tools such as Python, MATLAB, Aspen, COMSOL, Fluent, or OpenFOAM" (Postdoctoral Research Associate - Gas Dynamics, Fluid Flow, and Mass Transfer, Sep 22, 2026) |
| [Ford Motor Company](https://sumble.com/orgs/ford-motor) | 40 | 29 | "Experience with industry-standard CFD software such as COMSOL, OpenFOAM, STAR-CCM+, or similar." (Simulation Research Engineer, Apr 1, 2026) |

## Is hiring for OpenFOAM growing?

Hiring for OpenFOAM is growing. 0.73 in every 10,000 job posts named it from June to August 2026, against 0.58 from March to May. August 2026 was its highest month since October 2025, at 0.79.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 93 | 1,413,673 | 0.66 |
| Nov 2025 | 104 | 1,822,119 | 0.57 |
| Dec 2025 | 84 | 1,236,103 | 0.68 |
| Jan 2026 | 95 | 1,828,002 | 0.52 |
| Feb 2026 | 97 | 1,856,647 | 0.52 |
| Mar 2026 | 95 | 1,850,711 | 0.51 |
| Apr 2026 | 105 | 1,728,886 | 0.61 |
| May 2026 | 112 | 1,821,509 | 0.61 |
| Jun 2026 | 139 | 1,909,496 | 0.73 |
| Jul 2026 | 123 | 1,815,180 | 0.68 |
| Aug 2026 | 145 | 1,835,698 | 0.79 |

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

From June to August 2026, 119 companies posted their first job naming OpenFOAM; 84 did from March to May. Of the 1,456 companies whose job posts name it, 8.2% first named it from June to August.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 84 |
| June to August 2026 | 119 |
| October 2025 to August 2026 | 325 |

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 OpenFOAM?

Most of these companies come from employees' profiles: 85% have no job post naming OpenFOAM. 1,456 name it in their own job posts.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name OpenFOAM | 1,456 | 15% |
| Employees' profiles list OpenFOAM | 8,190 | 85% |

## What size are the companies that use OpenFOAM?

By size, the biggest group of OpenFOAM users is companies with 50 to 999 employees, at 43%. 2,360 of its companies have fewer than 50 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 24% | 22% |
| 50 to 999 | 43% | 38% |
| 1,000 to 5,000 | 19% | 17% |
| Over 5,000 | 14% | 23% |

## Where are OpenFOAM companies based?

Beyond the United States (21%), OpenFOAM is unusually common in Italy, at 5.8% of its companies. Its companies are based in 111 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 1,986 | 21% | 43% |
| Germany | 1,135 | 12% | 4.4% |
| France | 719 | 7.7% | 4.6% |
| United Kingdom | 622 | 6.7% | 6.4% |
| India | 595 | 6.4% | 6.9% |
| Italy | 538 | 5.8% | 1.5% |

## Which teams work with OpenFOAM?

Job posts most often place OpenFOAM with CFD, R&D and aerodynamics teams. Next are engineering and simulation teams, at 13 and 9 companies.

| Team | Companies |
|---|---:|
| CFD | 29 |
| R&D | 26 |
| Aerodynamics | 16 |
| Engineering | 13 |
| Simulation | 9 |
| Modeling & simulation | 6 |

## Which roles mention OpenFOAM most?

OpenFOAM shows up across many roles. The top one, Mechanical Engineer, has 26% of the job posts. Researcher is second, at 6%.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Mechanical Engineer | 26% | 305 | 67 | 98 |
| Researcher | 6% | 71 | 16 | 27 |
| Engineer | 5.4% | 64 | 19 | 17 |
| Skilled Trades | 4.9% | 59 | 14 | 14 |
| AI Engineer | 3.3% | 39 | 9 | 20 |
| Software Engineer | 2.7% | 32 | 4 | 6 |

## Which companies started naming OpenFOAM in job posts recently?

From April to August 2026, 105 companies with 50 or more employees posted their first job naming OpenFOAM: 50 commercial, 23 mid-market and 32 enterprise. Another 6 were AI-native companies, which we list separately.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [Mistral](https://sumble.com/orgs/mistralai) | 9 |
| AI native | [Helsing](https://sumble.com/orgs/helsing) | 2 |
| AI native | [Periodic Labs](https://sumble.com/orgs/periodic-labs) | 1 |
| AI native | [Vinci](https://sumble.com/orgs/vinci4d-ai) | 1 |
| AI native | [UniversalAGI](https://sumble.com/orgs/universalagi) | 1 |
| Commercial | [IMDEA Energy](https://sumble.com/orgs/imdea-energy) | 3 |
| Commercial | [Hayward Holdings, Inc.](https://sumble.com/orgs/hayward-industries) | 2 |
| Commercial | [Trench Group](https://sumble.com/orgs/trench-siemens) | 2 |
| Commercial | [Viettel High Tech](https://sumble.com/orgs/viettel-high-tech) | 2 |
| Commercial | [ENSTA](https://sumble.com/orgs/ecole-nationale-superieure-de-techniques-avancees) | 2 |
| Mid-market | [Mindrift](https://sumble.com/orgs/mindrift-ai) | 12 |
| Mid-market | [Hoare Lea](https://sumble.com/orgs/hoare-lea) | 5 |
| Mid-market | [Pacific Northwest National Laboratory](https://sumble.com/orgs/pacific-northwest-national-laboratory) | 2 |
| Mid-market | [Etteplan](https://sumble.com/orgs/etteplan) | 2 |
| Mid-market | [Worcester Polytechnic Institute](https://sumble.com/orgs/worcester-polytechnic-institute) | 2 |
| Enterprise | [UL Solutions](https://sumble.com/orgs/ul-solutions) | 5 |
| Enterprise | [Amazon Web Services (AWS)](https://sumble.com/orgs/amazon-web-services) | 3 |
| Enterprise | [Micron Technology](https://sumble.com/orgs/micron-technology) | 3 |
| Enterprise | [Peraton](https://sumble.com/orgs/peraton) | 3 |
| Enterprise | [Booz Allen Hamilton](https://sumble.com/orgs/booz-allen-hamilton) | 2 |

Companies that named OpenFOAM 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.

## What else do OpenFOAM companies use?

ANSYS Fluent, STAR-CCM+ and Modelica show up far more often at OpenFOAM companies than at companies of the same size. MCNP comes fourth, 45 times as common as usual, at 6%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| ANSYS Fluent | 423 | 41% | 0.58% | 71 times |
| STAR-CCM+ | 384 | 37% | 0.55% | 68 times |
| Modelica | 105 | 10% | 0.22% | 46 times |
| MCNP | 62 | 6% | 0.13% | 45 times |
| CFX | 78 | 7.5% | 0.17% | 44 times |
| Amesim | 101 | 9.8% | 0.24% | 41 times |
| Dymola | 55 | 5.3% | 0.13% | 40 times |
| Optistruct | 74 | 7.2% | 0.18% | 39 times |

Shares are out of the 1,034 companies whose job posts name OpenFOAM, not counting firms whose job posts name almost every technology.

## 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.