# Companies using HYSYS

3,907 companies in our data use HYSYS, and 1,440 of them name it in job posts they wrote. Hiring for it is steady, with 1,775 job posts naming it from October 2025 to August 2026. Process engineering teams are its most common home.

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

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

The companies with the most job posts naming HYSYS are Wood (549), ExxonMobil (315) and Worley (308). Four of these five companies are in Professional Services.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Wood](https://sumble.com/orgs/wood) | 549 | 63 | "Proficient in Process Simulation software’s such as HYSYS, Flare System Analyzer, PipeNet, Pipesim, OLGA etc." (Senior Process Engineer - Expressions of Interest, Nov 6, 2026) |
| [ExxonMobil](https://sumble.com/orgs/exxonmobil) | 315 | 33 | "Engineering Applications such as IPM (GAP, PROSPER, Resolve), OFM and Hysys" (Bangalore Career Fair 21 & 22 November - Production Engineer (Oil & Gas), Oct 21, 2026) |
| [Worley](https://sumble.com/orgs/worley) | 308 | 63 | "Process modelling using the relevant standard simulation packages HYSYS, ASPEN, METSIM etc." (Senior Process Engineer, Oct 31, 2026) |
| [Burns & McDonnell](https://sumble.com/orgs/burns-&-mcdonnell) | 282 | 6 | "…Hysys and/or Aspen, HTRI ." (Staff Process Engineer - Consumer & Life Solutions (Kansas City), Nov 7, 2026) |
| [Hargrove Engineers & Constructors](https://sumble.com/orgs/hargrove-engineers-+-constructors) | 269 | 2 | "Knowledgeable in the use of process simulation software such as Aspen Plus, Aspen Plus Dynamics, PRO/II, DYNSIM, HYSYS, CHEMCAD, WinGEMS, ProMax, etc." (Process Engineer IV, Oct 10, 2026) |

## Is hiring for HYSYS growing?

HYSYS holds a steady place in hiring. 0.93 in every 10,000 job posts named it from June to August 2026, against 0.91 from March to May.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 122 | 1,413,673 | 0.86 |
| Nov 2025 | 169 | 1,822,119 | 0.93 |
| Dec 2025 | 133 | 1,236,103 | 1.1 |
| Jan 2026 | 161 | 1,828,002 | 0.88 |
| Feb 2026 | 177 | 1,856,647 | 0.95 |
| Mar 2026 | 155 | 1,850,711 | 0.84 |
| Apr 2026 | 186 | 1,728,886 | 1.1 |
| May 2026 | 153 | 1,821,509 | 0.84 |
| Jun 2026 | 179 | 1,909,496 | 0.94 |
| Jul 2026 | 186 | 1,815,180 | 1.0 |
| Aug 2026 | 154 | 1,835,698 | 0.84 |

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

48 companies named HYSYS in a job post for the first time from June to August 2026, against 64 from March to May. The 48 from June to August are 3.3% of all 1,440 companies whose job posts name it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 64 |
| June to August 2026 | 48 |
| October 2025 to August 2026 | 169 |

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 HYSYS?

1,440 companies name HYSYS in their own job posts. The other 2,467 show up because employees list it on their profiles. 354 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name HYSYS | 1,440 | 37% |
| Employees' profiles list HYSYS | 2,467 | 63% |

## What size are the companies that use HYSYS?

Companies with 50 to 999 employees are the largest group of HYSYS users, at 43%. 780 of its companies have fewer than 50 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 20% | 22% |
| 50 to 999 | 43% | 38% |
| 1,000 to 5,000 | 20% | 17% |
| Over 5,000 | 17% | 23% |

## Where are HYSYS companies based?

The United States has the most HYSYS companies (25%), but Indonesia stands out: 6.8% of them, against 0.64% on the typical tech page. Canada is second, at 7.3%.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 900 | 25% | 43% |
| Canada | 268 | 7.3% | 3.6% |
| Indonesia | 250 | 6.8% | 0.64% |
| United Kingdom | 209 | 5.7% | 6.4% |
| India | 201 | 5.5% | 6.9% |
| France | 192 | 5.2% | 4.6% |

## Which teams work with HYSYS?

Process engineering teams are the most common home for HYSYS, at 89 companies, followed by process and engineering. Operations teams come fourth, at 28 companies.

| Team | Companies |
|---|---:|
| Process engineering | 89 |
| Process | 45 |
| Engineering | 41 |
| Operations | 28 |
| Process design | 11 |
| Technical services | 9 |

## Which roles mention HYSYS most?

Engineer is the most common role, in 27% of job posts naming HYSYS. Industrial Engineer is second, at 15%.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Engineer | 27% | 487 | 139 | 117 |
| Industrial Engineer | 15% | 269 | 68 | 79 |
| Chemical Engineer | 14% | 242 | 70 | 85 |
| Skilled Trades | 2.9% | 51 | 12 | 11 |
| Safety Engineer | 2.6% | 46 | 14 | 15 |
| Mechanical Engineer | 2.4% | 43 | 11 | 13 |

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

53 companies with 50 or more employees picked up HYSYS in their job posts from April to August 2026. Among the new enterprise companies, Arkema posted the most jobs naming it: 4.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [X-energy](https://sumble.com/orgs/x-energy) | 3 |
| Commercial | [Crescent Energy](https://sumble.com/orgs/crescent-energy) | 3 |
| Commercial | [KBC A Yokogawa Company](https://sumble.com/orgs/kbc-a-yokogawa) | 3 |
| Commercial | [WOG Technologies Limited](https://sumble.com/orgs/wog-technologies) | 3 |
| Commercial | [Koch Ag & Energy Solutions, LLC](https://sumble.com/orgs/kochagandenergy) | 2 |
| Mid-market | [UPM](https://sumble.com/orgs/upm) | 4 |
| Mid-market | [Sener](https://sumble.com/orgs/sener) | 4 |
| Mid-market | [EOG Resources](https://sumble.com/orgs/eog-resources) | 4 |
| Mid-market | [Williams](https://sumble.com/orgs/williams-companies) | 2 |
| Mid-market | [BWXT](https://sumble.com/orgs/bwx-technologies) | 2 |
| Enterprise | [Arkema](https://sumble.com/orgs/arkema) | 4 |
| Enterprise | [Wipro](https://sumble.com/orgs/wipro) | 1 |
| Enterprise | [Coca-Cola FEMSA](https://sumble.com/orgs/coca-cola-femsa) | 1 |
| Enterprise | [RGE](https://sumble.com/orgs/rge-09d3b229) | 1 |
| Enterprise | [Georgia-Pacific LLC](https://sumble.com/orgs/georgia-pacific) | 1 |

Companies that named HYSYS 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 HYSYS companies use?

Compared with companies of the same size, HYSYS companies stand out for using Pro II and Unisim. Next is Pipesim: 12% of these companies use it, against 0.13% of similar ones.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Pro II | 187 | 17% | 0.14% | 122 times |
| Unisim | 191 | 17% | 0.15% | 113 times |
| Pipesim | 136 | 12% | 0.13% | 98 times |
| ProMax | 186 | 17% | 0.17% | 97 times |
| Aspen Plus | 390 | 36% | 0.42% | 84 times |
| CADWorx | 192 | 18% | 0.22% | 79 times |
| SmartPlant | 130 | 12% | 0.2% | 60 times |
| SP3D | 145 | 13% | 0.23% | 58 times |

Shares are out of the 1,096 companies whose job posts name HYSYS, 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.