# Companies using Sonnet

1,267 companies use Sonnet, based on their job posts and their employees' public profiles. Its share of job posts held steady in the three months to August 2026; 195 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 Sonnet in the most job posts?

The companies with the most job posts naming Sonnet are Skyworks Solutions, Inc. (130), Northrop Grumman (94) and Lockheed Martin (52). Four of these five companies are in Manufacturing.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Skyworks Solutions, Inc.](https://sumble.com/orgs/skyworks-solutions) | 130 | 15 | "Candidate shall be familiar with EM solvers (Sonnet, Momentum, Axiem and/or HFSS)." (rf design engineering intern, Nov 1, 2026) |
| [Northrop Grumman](https://sumble.com/orgs/northrop-grumman) | 94 | 16 | "2D and 3D Electromagnetic modeling background with commercial tools such as ANSYS, Momentum, Sonnet, etc." (Principal/Senior Principal Engineer RF Microwave Design - R10218557-29, Jan 12, 2026) |
| [Lockheed Martin](https://sumble.com/orgs/lockheed-martin) | 52 | 4 | "Experience with RF modelling software including: ADS RF simulation and optimization, Ansoft HFSS, Sonnet, Microwave Office, MATLAB, SPICE" (rf engineer, Apr 25, 2025) |
| [Qorvo, Inc.](https://sumble.com/orgs/qorvo) | 40 | 7 | "Candidate shall be familiar with EM solvers (Sonnet, Momentum, Axiem and/or HFSS)." (rf design engineering intern, Sep 7, 2026) |
| [Integration Innovation, Inc.](https://sumble.com/orgs/integration-innovation) | 35 | 0 | "Working knowledge of an EM simulation tool (HFSS, CST Studio, Sonnet, ADS, HSPICE, SI-Wave) and MATLAB." (Senior RF Engineer, Oct 23, 2026) |

## Is hiring for Sonnet growing?

Sonnet holds a steady place in hiring. 0.10 in every 10,000 job posts named it from June to August 2026, against 0.11 from March to May. From October to December 2025 it was 0.10.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 16 | 1,413,673 | 0.11 |
| Nov 2025 | 15 | 1,822,119 | 0.08 |
| Dec 2025 | 12 | 1,236,103 | 0.10 |
| Jan 2026 | 16 | 1,828,002 | 0.09 |
| Feb 2026 | 16 | 1,856,647 | 0.09 |
| Mar 2026 | 17 | 1,850,711 | 0.09 |
| Apr 2026 | 26 | 1,728,886 | 0.15 |
| May 2026 | 19 | 1,821,509 | 0.10 |
| Jun 2026 | 18 | 1,909,496 | 0.09 |
| Jul 2026 | 19 | 1,815,180 | 0.10 |
| Aug 2026 | 21 | 1,835,698 | 0.11 |

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

Sonnet showed up in job posts at 17 companies for the first time from June to August 2026, and 19 in the three months before. Of the 208 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 | 19 |
| June to August 2026 | 17 |
| October 2025 to August 2026 | 56 |

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 Sonnet?

1,059 of the 1,267 companies show up because employees list Sonnet on their profiles; 208 name it in their own job posts. 60 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Sonnet | 208 | 16% |
| Employees' profiles list Sonnet | 1,059 | 84% |

## What size are the companies that use Sonnet?

34% of Sonnet users are companies with 50 to 999 employees, the largest size group. The second-largest group is companies with more than 5,000 employees, at 29%.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 16% | 22% |
| 50 to 999 | 34% | 38% |
| 1,000 to 5,000 | 21% | 17% |
| Over 5,000 | 29% | 23% |

## Where are Sonnet companies based?

The United States dominates for Sonnet, with 51% of the companies that use it. India is second, at 6.2%.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 624 | 51% | 43% |
| India | 76 | 6.2% | 6.9% |
| United Kingdom | 59 | 4.8% | 6.4% |
| Germany | 56 | 4.6% | 4.4% |
| Canada | 46 | 3.8% | 3.6% |
| France | 38 | 3.1% | 4.6% |

## Which teams work with Sonnet?

Job posts naming Sonnet point to RF & microwave design engineering teams most often, at 5 companies. R&D and sspa & space component design teams come next, at 4 companies each.

| Team | Companies |
|---|---:|
| RF & microwave design engineering | 5 |
| R&D | 4 |
| Sspa & space component design | 4 |
| Research & development | 3 |
| RF engineering | 3 |
| AWS utility computing (UC) | 2 |

## Which roles mention Sonnet most?

Electrical Engineer and Hardware Engineer roles account for 35% of the job posts that name Sonnet. Electrical Engineer posts naming it numbered 9 from March to May 2026 and 15 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Electrical Engineer | 20% | 39 | 9 | 15 |
| Hardware Engineer | 15% | 29 | 6 | 7 |
| AI Engineer | 7.7% | 15 | 10 | 1 |
| Chip Designer | 6.7% | 13 | 5 | 4 |
| Software Engineer | 4.6% | 9 | 1 | 3 |
| Data Scientist | 3.1% | 6 | 1 | 1 |

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

24 companies with 50 or more employees started naming Sonnet in job posts between April and August 2026. 7 of them have more than 5,000 employees. Delta Dental Ins. leads the new mid-market companies, with 3 job posts from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [Marcura](https://sumble.com/orgs/marcura) | 2 |
| Commercial | [Syntronic - A Global Design House](https://sumble.com/orgs/syntronic) | 2 |
| Commercial | [QuantumBlack, AI by McKinsey](https://sumble.com/orgs/mckinsey-com-business-functions-quantumblack-client-support-services) | 1 |
| Commercial | [Meteksan Savunma](https://sumble.com/orgs/meteksansavunma) | 1 |
| Commercial | [Open Reply IT](https://sumble.com/orgs/open-reply) | 1 |
| Mid-market | [Delta Dental Ins.](https://sumble.com/orgs/delta-dental-ins) | 3 |
| Mid-market | [Geotab](https://sumble.com/orgs/geotab) | 2 |
| Mid-market | [Accolite](https://sumble.com/orgs/accolite-digital) | 1 |
| Mid-market | [Argonne National Laboratory](https://sumble.com/orgs/argonne-national-laboratory) | 1 |
| Mid-market | [Scalian](https://sumble.com/orgs/scalian) | 1 |
| Enterprise | [Broadcom](https://sumble.com/orgs/broadcom) | 2 |
| Enterprise | [EY](https://sumble.com/orgs/ey) | 1 |
| Enterprise | [Ericsson](https://sumble.com/orgs/ericsson) | 1 |
| Enterprise | [Qualcomm](https://sumble.com/orgs/qualcomm) | 1 |
| Enterprise | [Unisys](https://sumble.com/orgs/unisys-9) | 1 |

Companies that named Sonnet 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 Sonnet companies use?

Microwave Office and Keysight ADS are the tools most closely tied to Sonnet. Among the tools listed here, HFSS is the most widely used, at 50.5% of Sonnet companies.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Microwave Office | 20 | 18% | 0.06% | 284 times |
| Keysight ADS | 19 | 17% | 0.11% | 156 times |
| Ansys HFSS | 30 | 27% | 0.2% | 137 times |
| HFSS | 56 | 50.5% | 0.41% | 124 times |
| CST | 37 | 33% | 0.46% | 73 times |
| Synopsys | 14 | 13% | 0.22% | 59 times |
| Altera | 10 | 9% | 0.16% | 56 times |
| Xilinx | 21 | 19% | 0.38% | 49 times |

Shares are out of the 111 companies whose job posts name Sonnet, not counting firms whose job posts name almost every technology.

## Which project themes come up in Sonnet job posts?

30 job posts naming Sonnet describe Generative AI work. Apart from broad digital transformation work, Data Infrastructure Migration comes next, with 3.

| Project theme | Job posts |
|---|---:|
| Generative AI | 30 |
| Digital Transformation | 13 |
| Data Infrastructure Migration | 3 |

- "Déployer des assistants et agents de génération de code (basés sur Claude 3.5 Sonnet et Gemini 1.5 Pro) pour accélérer le développement de nouvelles fonctionnalités" (DentalSoft, Applied AI & Enablement Engineer (m/f), Aug 18, 2026)

## 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.