# Companies using SimPy

We found 486 companies that use SimPy. 192 of them name it in their own job posts, and the rest through employees' public profiles. 135 job posts named it from October 2025 to August 2026. It comes up most in Software Engineer job posts.

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

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

MITRE, SoftServe and HP mention SimPy in the most job posts. MITRE has named it in job posts the longest of the five companies in the table, since February 2023.

| Company | Job posts | Recent job post |
|---|---:|---|
| [MITRE](https://sumble.com/orgs/mitre) | 50 | "Demonstrated ability to use at least one simulation platform (e.g., Stella, Simio, Arena, AnyLogic, SimPy, RSimmer)" (Lead Operations Analyst, Oct 24, 2026) |
| [SoftServe](https://sumble.com/orgs/softserve) | 37 | "Versed in discrete event simulations using tools like SimPy or FlexSim, AnyLogic, Matlab, or similar simulation tools (as a win)" (senior omniverse engineer, Jun 7, 2026) |
| [HP](https://sumble.com/orgs/hp) | 25 | "…(e.g., pandas, scikit-learn, TensorFlow, PyTorch, PuLP, SciPy, SimPy)." (principal data scientist, Mar 8, 2025) |
| [Bristol Myers Squibb](https://sumble.com/orgs/bristol-myers-squibb) | 20 | "Experience with simulation software (SIMIO, Arena, etc.) or DES libraries (simmer, simpy)" (Data Scientist II, BIA GPS India Operations (Operations research) [T500-12404], Mar 13, 2025) |
| [A.P. Moller - Maersk](https://sumble.com/orgs/maersk) | 15 | "SimPy for modeling states, events, resources e.g.…" (Senior AI/ML Engineer - Simulation, Apr 7, 2026) |

## Is hiring for SimPy growing?

0.08 in every 10,000 job posts named SimPy from June to August 2026, against 0.06 from March to May. These are small numbers of job posts, so a few companies can move them.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 5 | 1,413,673 | 0.04 |
| Nov 2025 | 11 | 1,822,119 | 0.06 |
| Dec 2025 | 15 | 1,236,103 | 0.12 |
| Jan 2026 | 12 | 1,828,002 | 0.07 |
| Feb 2026 | 10 | 1,856,647 | 0.05 |
| Mar 2026 | 6 | 1,850,711 | 0.03 |
| Apr 2026 | 16 | 1,728,886 | 0.09 |
| May 2026 | 13 | 1,821,509 | 0.07 |
| Jun 2026 | 20 | 1,909,496 | 0.10 |
| Jul 2026 | 7 | 1,815,180 | 0.04 |
| Aug 2026 | 20 | 1,835,698 | 0.11 |

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

From June to August 2026, 18 companies posted their first job naming SimPy; 9 did from March to May. The 18 from June to August are 9.4% of all 192 companies whose job posts name it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 9 |
| June to August 2026 | 18 |
| October 2025 to August 2026 | 51 |

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 SimPy?

We found 486 companies that use SimPy, 294 of them through employees' profiles alone. 192 name it in their own job posts.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name SimPy | 192 | 40% |
| Employees' profiles list SimPy | 294 | 60% |

## What size are the companies that use SimPy?

SimPy leans toward large companies. 36% of its users are companies with more than 5,000 employees, against 23% on the typical tech page. 77 of its companies have fewer than 50 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 16% | 22% |
| 50 to 999 | 30% | 38% |
| 1,000 to 5,000 | 19% | 17% |
| Over 5,000 | 36% | 23% |

## Where are SimPy companies based?

Beyond the United States (42%), SimPy is unusually common in Germany, at 8.8% of its companies. India is less common than usual, at 4.1% against 6.9% on the typical tech page.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 193 | 42% | 43% |
| Germany | 41 | 8.8% | 4.4% |
| United Kingdom | 26 | 5.6% | 6.4% |
| France | 21 | 4.5% | 4.6% |
| India | 19 | 4.1% | 6.9% |
| Canada | 17 | 3.7% | 3.6% |

## Which roles mention SimPy most?

SimPy shows up across many roles. The top one, Software Engineer, has 13% of the job posts. Software Engineer posts naming it numbered 3 from March to May 2026 and 6 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Software Engineer | 13% | 18 | 3 | 6 |
| Data Scientist | 9.6% | 13 | 3 | 3 |
| AI Engineer | 6.7% | 9 | 3 | 1 |
| Analyst | 5.9% | 8 | 2 | 5 |
| Engineer | 5.9% | 8 | 3 | 4 |
| Industrial Engineer | 5.2% | 7 | 3 | 3 |

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

Between April and August 2026, 20 companies with 50 or more employees first named SimPy in a job post, 11 of them with more than 5,000 employees. KBR Careers has the most job posts of the new mid-market companies, 3 from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [Stress Engineering Services, Inc.](https://sumble.com/orgs/stress-engineering-services) | 2 |
| Commercial | [FUCHS LUBRICANTS CO.](https://sumble.com/orgs/fuchs-lubricants-co-usa) | 1 |
| Commercial | [Core4ce](https://sumble.com/orgs/core4ce-com) | 1 |
| Commercial | [Hyundai Motor Group Innovation Center Singapore (HMGICS)](https://sumble.com/orgs/hmgics) | 1 |
| Commercial | [Tagueri AG](https://sumble.com/orgs/tagueri) | 1 |
| Mid-market | [KBR Careers](https://sumble.com/orgs/kbr-careers) | 3 |
| Mid-market | [Symbotic](https://sumble.com/orgs/symbotic-2) | 2 |
| Mid-market | [Worldwide Flight Services (WFS)](https://sumble.com/orgs/worldwide-flight-services) | 1 |
| Mid-market | [OceanSound Partners](https://sumble.com/orgs/oceansound-partners) | 1 |
| Enterprise | [Infosys](https://sumble.com/orgs/infosys) | 2 |
| Enterprise | [Accenture in India](https://sumble.com/orgs/accentureindia) | 2 |
| Enterprise | [Humana](https://sumble.com/orgs/humana) | 2 |
| Enterprise | [Johnson & Johnson MedTech](https://sumble.com/orgs/neuwave) | 2 |
| Enterprise | [Tata Consultancy Services](https://sumble.com/orgs/tata-consultancy-services-tcs) | 1 |

Companies that named SimPy 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 SimPy companies use?

AnyLogic and Simio are the tools most closely tied to SimPy. FlexSim is 41 times as common as usual, at 15%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| AnyLogic | 37 | 37% | 0.42% | 87 times |
| Simio | 18 | 18% | 0.24% | 75 times |
| FlexSim | 15 | 15% | 0.36% | 41 times |
| Pyomo | 11 | 11% | 0.27% | 40 times |
| Gurobi | 27 | 27% | 0.9% | 30 times |
| IBM CPLEX | 21 | 21% | 0.7% | 30 times |
| Three.js | 10 | 9.9% | 0.67% | 15 times |
| Kuka | 11 | 11% | 0.82% | 13 times |

Shares are out of the 101 companies whose job posts name SimPy, 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.