# Companies using HFSS

5,623 companies use HFSS, based on their job posts and their employees' public profiles. Its share of job posts held steady in the three months to August 2026; 3,924 job posts named it from October 2025 to August 2026. Electrical Engineer roles mention it most.

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

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

Skyworks Solutions, Inc., Apple and L3Harris Technologies mention HFSS in the most job posts. Raytheon Technologies is the newest of the five companies in the table, with its first job post naming it in June 2023.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Skyworks Solutions, Inc.](https://sumble.com/orgs/skyworks-solutions) | 862 | 119 | "Perform detailed nonlinear modeling, 2.5D/3D EM co-simulation, and circuit optimization using ADS, HFSS, Cadence, and similar tools." (Sr. Principal RF/MMIC Design Engineer, Nov 7, 2026) |
| [Apple](https://sumble.com/orgs/apple) | 724 | 300 | "Proficiency with EM passive designs and familiarity with EM simulation tools like HFSS, EMX, or Momentum." (RF Passive Design Engineer, Nov 6, 2026) |
| [L3Harris Technologies](https://sumble.com/orgs/l3harris) | 642 | 26 | "Utilize design tools such as HFSS, CST, MATLAB, and GRASP" (Associate, Electrical Engineering (Rochester, NY), Nov 4, 2026) |
| [Qorvo, Inc.](https://sumble.com/orgs/qorvo) | 563 | 88 | "Expert-level user in 3D EM simulation tools such as HFSS and/or Analyst and knowledge of one or more of the following: ADS, Microwave Office (MWO) or Cadence (Spectre) circuit simulators." (staff module design engineer, Oct 24, 2026) |
| [Raytheon Technologies](https://sumble.com/orgs/raytheon) | 548 | 64 | "Hands-on experience with electromagnetic simulation tools such as HFSS, ADS, CST, or Mentor Graphics’ Xpedition and analytical tools such as Matlab" (Antenna and Microwave Design Section Lead, Nov 6, 2026) |

## Is hiring for HFSS growing?

Since late 2025, job posts mentioning HFSS went from 1.8 to 2.3 in every 10,000 job posts, and the last three months were flat.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 254 | 1,413,673 | 1.8 |
| Nov 2025 | 329 | 1,822,119 | 1.8 |
| Dec 2025 | 222 | 1,236,103 | 1.8 |
| Jan 2026 | 319 | 1,828,002 | 1.7 |
| Feb 2026 | 381 | 1,856,647 | 2.1 |
| Mar 2026 | 372 | 1,850,711 | 2.0 |
| Apr 2026 | 366 | 1,728,886 | 2.1 |
| May 2026 | 413 | 1,821,509 | 2.3 |
| Jun 2026 | 398 | 1,909,496 | 2.1 |
| Jul 2026 | 413 | 1,815,180 | 2.3 |
| Aug 2026 | 457 | 1,835,698 | 2.5 |

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

123 companies named HFSS in a job post for the first time from June to August 2026, against 91 from March to May. Of the 1,905 companies whose job posts name it, 6.5% first named it from June to August.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 91 |
| June to August 2026 | 123 |
| October 2025 to August 2026 | 368 |

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 HFSS?

Employees' profiles account for 66% of the companies here. 1,905 companies name HFSS in job posts they wrote. 676 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name HFSS | 1,905 | 34% |
| Employees' profiles list HFSS | 3,718 | 66% |

## What size are the companies that use HFSS?

Companies with 50 to 999 employees are the largest group of HFSS users, at 42%. 1,287 of its companies have fewer than 50 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 23% | 22% |
| 50 to 999 | 42% | 38% |
| 1,000 to 5,000 | 18% | 17% |
| Over 5,000 | 17% | 23% |

## Where are HFSS companies based?

India is 1.4 times as common among HFSS companies as on the typical tech page, at 9.7%. The United States leads overall with 35%. Its companies are based in 93 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 1,895 | 35% | 43% |
| India | 520 | 9.7% | 6.9% |
| France | 340 | 6.4% | 4.6% |
| United Kingdom | 286 | 5.3% | 6.4% |
| Germany | 244 | 4.6% | 4.4% |
| Canada | 211 | 3.9% | 3.6% |

## Which teams work with HFSS?

Engineering teams are by far the most common home for HFSS, at 56 companies. R&D and RF teams come next, at 26 companies each.

| Team | Companies |
|---|---:|
| Engineering | 56 |
| R&D | 26 |
| RF | 26 |
| Hardware | 18 |
| Hardware engineering | 18 |
| RF engineering | 18 |

## Which roles mention HFSS most?

Electrical Engineer and Hardware Engineer roles account for 40% of the job posts that name HFSS. Electrical Engineer posts naming it numbered 299 from March to May 2026 and 321 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Electrical Engineer | 26% | 1,016 | 299 | 321 |
| Hardware Engineer | 14% | 553 | 116 | 162 |
| Telecommunications Engineer | 6.5% | 255 | 75 | 86 |
| Chip Designer | 5.9% | 233 | 65 | 55 |
| Systems Engineer | 2.5% | 99 | 23 | 34 |
| Engineer | 2.1% | 81 | 23 | 26 |

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

From April to August 2026, 101 companies with 50 or more employees posted their first job naming HFSS: 66 commercial, 24 mid-market and 11 enterprise. K2 Space Corporation leads the new commercial companies, with 5 job posts from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [K2 Space Corporation](https://sumble.com/orgs/k2-space) | 5 |
| Commercial | [Acron Aviation](https://sumble.com/orgs/acronaviation) | 4 |
| Commercial | [QuantumDiamonds](https://sumble.com/orgs/quantumdiamonds) | 4 |
| Commercial | [Nexio SAS](https://sumble.com/orgs/nexio-9) | 4 |
| Commercial | [Viettel High Tech](https://sumble.com/orgs/viettel-high-tech) | 3 |
| Mid-market | [ASE Global](https://sumble.com/orgs/aseglobal) | 3 |
| Mid-market | [Optiver](https://sumble.com/orgs/optiver) | 2 |
| Mid-market | [Saint-Gobain Sekurit](https://sumble.com/orgs/saint-gobain-sekurit) | 2 |
| Mid-market | [fortil](https://sumble.com/orgs/fortil) | 2 |
| Mid-market | [Hyve Solutions](https://sumble.com/orgs/hyve-solutions) | 2 |
| Enterprise | [Siemens Healthineers](https://sumble.com/orgs/siemens-healthineers) | 2 |
| Enterprise | [Michigan State University](https://sumble.com/orgs/michigan-state-university) | 2 |
| Enterprise | [UL Solutions](https://sumble.com/orgs/ul-solutions) | 2 |
| Enterprise | [Medical College of Wisconsin](https://sumble.com/orgs/medical-college-of-wisconsin) | 2 |
| Enterprise | [OMRON Group](https://sumble.com/orgs/omron) | 2 |

Companies that named HFSS 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 HFSS companies use?

Compared with companies of the same size, HFSS companies stand out for using Microwave Office and FEKO. SIwave comes third, 179 times as common as usual, at 11%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Microwave Office | 139 | 11% | 0.05% | 198 times |
| FEKO | 164 | 13% | 0.07% | 180 times |
| SIwave | 136 | 11% | 0.06% | 179 times |
| Keysight ADS | 204 | 16% | 0.09% | 167 times |
| CST | 778 | 60% | 0.39% | 156 times |
| Ansys HFSS | 279 | 22% | 0.17% | 129 times |
| HSPICE | 78 | 6.1% | 0.06% | 106 times |
| Petalinux | 84 | 6.5% | 0.07% | 98 times |

Shares are out of the 1,289 companies whose job posts name HFSS, 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.