# Companies using Unisim

3,698 companies in our data use Unisim, and 392 of them name it in job posts they wrote. Its share of job posts held steady in the three months to August 2026; 447 job posts named it from October 2025 to August 2026. It comes up most in Engineer job posts.

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

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

Honeywell Technologies has posted more jobs naming Unisim than any other company: 396. Three of these five companies are in Professional Services.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Honeywell Technologies](https://sumble.com/orgs/honeywell) | 396 | 180 | "Significant experience in UniSim and UOP SchA tools and applications" (Principal Chemical Engineer, Oct 23, 2026) |
| [Worley](https://sumble.com/orgs/worley) | 144 | 77 | "Software Proficiency: Competent use of relevant software such as MS Office Suite / Hysys, FlareNET, Aspen Plus, PipeNET, Pro II, Unisim" (Senior Process Engineer, Oct 24, 2026) |
| [Wood](https://sumble.com/orgs/wood) | 124 | 50 | "HYSYS or UniSim simulations (steady state) and modelling to produce heat and material balances for the client’s case map for production combinations over the life of the field" (Principal Process Engineer, Oct 24, 2026) |
| [ZAP Engineering & Construction Services, Inc.](https://sumble.com/orgs/zap-engineering-&-constructions-services) | 110 | 2 | "Experience with HYSYS, Unisim, ProMax, and/or VMG Symmetry and proficiency in Microsoft Office Suite, including Word, Outlook, and Excel." (I&C Engineer 1, Jul 22, 2026) |
| [Linde](https://sumble.com/orgs/linde-4) | 85 | 31 | "Process simulation modeling experience with UniSim, Aspen, or HYSYS" (Equipment Health Center Process Reliability Engineer, Jul 2, 2026) |

## Is hiring for Unisim growing?

Demand for Unisim is steady: 0.23 in every 10,000 job posts from June to August 2026, close to the 0.24 of March to May.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 28 | 1,413,673 | 0.20 |
| Nov 2025 | 47 | 1,822,119 | 0.26 |
| Dec 2025 | 34 | 1,236,103 | 0.28 |
| Jan 2026 | 32 | 1,828,002 | 0.18 |
| Feb 2026 | 45 | 1,856,647 | 0.24 |
| Mar 2026 | 33 | 1,850,711 | 0.18 |
| Apr 2026 | 48 | 1,728,886 | 0.28 |
| May 2026 | 51 | 1,821,509 | 0.28 |
| Jun 2026 | 36 | 1,909,496 | 0.19 |
| Jul 2026 | 50 | 1,815,180 | 0.28 |
| Aug 2026 | 43 | 1,835,698 | 0.23 |

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

From June to August 2026, 25 companies posted their first job naming Unisim; 14 did from March to May. The 25 from June to August are 6.4% of all 392 companies whose job posts name it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 14 |
| June to August 2026 | 25 |
| October 2025 to August 2026 | 53 |

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 Unisim?

We found 3,698 companies that use Unisim, 3,306 of them through employees' profiles alone. 166 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Unisim | 392 | 11% |
| Employees' profiles list Unisim | 3,306 | 89% |

## What size are the companies that use Unisim?

Companies with 1,000 to 5,000 employees stand out among Unisim users: 23%, against 17% on the typical tech page. 567 of its companies have fewer than 50 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 15% | 22% |
| 50 to 999 | 42% | 38% |
| 1,000 to 5,000 | 23% | 17% |
| Over 5,000 | 20% | 23% |

## Where are Unisim companies based?

Indonesia is 7.4 times as common among Unisim companies as on the typical tech page, at 4.8%. The United States leads overall with 25%. The United Kingdom is second, at 9.1%.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 898 | 25% | 43% |
| United Kingdom | 324 | 9.1% | 6.4% |
| India | 270 | 7.6% | 6.9% |
| Canada | 246 | 6.9% | 3.6% |
| Indonesia | 170 | 4.8% | 0.64% |
| Germany | 129 | 3.6% | 4.4% |

## Which teams work with Unisim?

Process engineering teams are the most common home for Unisim, at 33 companies, followed by process and engineering.

| Team | Companies |
|---|---:|
| Process engineering | 33 |
| Process | 19 |
| Engineering | 14 |
| Energy | 4 |
| Energy transition process | 4 |
| Process engineering discipline | 4 |

## Which roles mention Unisim most?

Engineer is the most common role, in 28% of job posts naming Unisim. Industrial Engineer is second, at 18%.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Engineer | 28% | 126 | 38 | 27 |
| Industrial Engineer | 18% | 80 | 23 | 28 |
| Chemical Engineer | 15% | 65 | 17 | 23 |
| Program Manager | 4% | 18 | 4 | 6 |
| Mechanical Designer | 3.1% | 14 | 6 | 2 |
| Solutions Architect | 2.2% | 10 | 2 | 2 |

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

Between April and August 2026, Unisim appeared for the first time in job posts at 26 companies: 10 commercial, 8 mid-market and 8 enterprise. Nucleo Engenharia Consultiva S.A. leads the new commercial companies, with 5 job posts from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [Nucleo Engenharia Consultiva S.A.](https://sumble.com/orgs/nucleo-engenharia-consultiva) | 5 |
| Commercial | [Nikkiso Clean Energy & Industrial Gases](https://sumble.com/orgs/nikkiso-cryogenic-industries) | 2 |
| Commercial | [Bantrel Co.](https://sumble.com/orgs/bantrel) | 2 |
| Commercial | [Technosoft Engineering](https://sumble.com/orgs/technosoft-engineering) | 1 |
| Commercial | [DORIS Group](https://sumble.com/orgs/doris) | 1 |
| Mid-market | [White Martins](https://sumble.com/orgs/whitemartinsoficial) | 4 |
| Mid-market | [Pan American Energy](https://sumble.com/orgs/pan-american-energy) | 1 |
| Mid-market | [Tüpraş](https://sumble.com/orgs/tupras) | 1 |
| Mid-market | [KBR Careers](https://sumble.com/orgs/kbr-careers) | 1 |
| Mid-market | [Bloom Energy](https://sumble.com/orgs/bloom-energy) | 1 |
| Enterprise | [Nucor Corporation](https://sumble.com/orgs/nucor) | 2 |
| Enterprise | [Wipro](https://sumble.com/orgs/wipro) | 1 |
| Enterprise | [Tesla](https://sumble.com/orgs/tesla) | 1 |
| Enterprise | [Dow](https://sumble.com/orgs/dow) | 1 |
| Enterprise | [Arup](https://sumble.com/orgs/arup) | 1 |

Companies that named Unisim 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 Unisim companies use?

Compared with companies of the same size, Unisim companies stand out for using Pro II and Pipesim. AutoPlant is 114 times as common as usual, at 5.1%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Pro II | 61 | 22% | 0.17% | 128 times |
| Pipesim | 52 | 19% | 0.16% | 119 times |
| AutoPlant | 14 | 5.1% | 0.04% | 114 times |
| HYSYS | 191 | 69% | 0.61% | 113 times |
| ProMax | 56 | 20% | 0.21% | 95 times |
| SmartPlant | 45 | 16% | 0.24% | 69 times |
| SP3D | 51 | 19% | 0.27% | 69 times |
| Aspen Plus | 93 | 34% | 0.52% | 65 times |

Shares are out of the 275 companies whose job posts name Unisim, 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.