# Companies using Tessy

We found 527 companies that use Tessy. 199 of them name it in their own job posts, and the rest through employees' public profiles. From October 2025 to August 2026, 113 job posts named it.

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

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

Syntronic - A Global Design House leads with 35 job posts naming Tessy, followed by UST and Intellias. Syntronic - A Global Design House is the newest of the five companies in the table, with its first job post naming it in November 2024.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Syntronic - A Global Design House](https://sumble.com/orgs/syntronic) | 35 | 0 | "该职位来源于猎聘 1.参与兆易创新MCAL测试项目、博格华纳单元集成测试项目、湘滨电子白盒测试 2.负责用例编写、用例执行、问题单整理、不直接与客户沟通 任职要求 1、熟悉C/C++，可以清晰的看懂C/C++语言逻辑； 2、有嵌入式开发或者测试经验 3、熟悉常见总线测试工具 4.熟悉QAC、TESSY、Gtest者优先" (Assigned - Jingwei Hirain Software Test Engineer, Sep 8, 2026) |
| [UST](https://sumble.com/orgs/ust-2) | 34 | 2 | "Knowledge of unit and integration testing tools such as Tessy, RTRT, and TPT" (Developer III - Embedded Software, Sep 18, 2026) |
| [Intellias](https://sumble.com/orgs/intellias) | 27 | 5 | "Contribute to unit and integration testing in embedded C using Tessy (or similar tools) — a strong plus" (Senior Software Test Engineer, Sep 22, 2025) |
| [Ban Vien Corporation](https://sumble.com/orgs/cong-ty-co-phan-ban-vien) | 25 | 0 | "Unit Testing (Tessy & RTRT), TPT & Integration Testing Tools." (embedded system engineer, Sep 12, 2026) |
| [KOSTAL Group](https://sumble.com/orgs/kostal-gruppe) | 20 | 3 | "Deseable Tessy, Polyspace, Jenkins." (software testing engineer, Mar 22, 2025) |

## Is hiring for Tessy growing?

From March to May 2026, 0.06 in every 10,000 job posts named Tessy; from June to August, 0.08 in every 10,000 job posts. One company accounts for most of that change.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 5 | 1,413,673 | 0.04 |
| Nov 2025 | 10 | 1,822,119 | 0.05 |
| Dec 2025 | 7 | 1,236,103 | 0.06 |
| Jan 2026 | 7 | 1,828,002 | 0.04 |
| Feb 2026 | 9 | 1,856,647 | 0.05 |
| Mar 2026 | 10 | 1,850,711 | 0.05 |
| Apr 2026 | 11 | 1,728,886 | 0.06 |
| May 2026 | 11 | 1,821,509 | 0.06 |
| Jun 2026 | 13 | 1,909,496 | 0.07 |
| Jul 2026 | 16 | 1,815,180 | 0.09 |
| Aug 2026 | 14 | 1,835,698 | 0.08 |

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

From June to August 2026, 9 companies posted their first job naming Tessy; 8 did from March to May. The 9 from June to August are 4.5% of all 199 companies whose job posts name it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 8 |
| June to August 2026 | 9 |
| October 2025 to August 2026 | 25 |

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 Tessy?

199 companies name Tessy in job posts they wrote; employees' profiles add 328 more. 61 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name Tessy | 199 | 38% |
| Employees' profiles list Tessy | 328 | 62% |

## What size are the companies that use Tessy?

Companies with 50 to 999 employees are the largest group of Tessy users, at 35%. 153 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 17% | 22% |
| 50 to 999 | 35% | 38% |
| 1,000 to 5,000 | 19% | 17% |
| Over 5,000 | 29% | 23% |

## Where are Tessy companies based?

Sweden is 3 times as common among Tessy companies as on the typical tech page, at 3.1%. Germany leads overall with 27%. The United States is second, at 21%.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| Germany | 138 | 27% | 4.4% |
| United States | 108 | 21% | 43% |
| India | 69 | 14% | 6.9% |
| France | 28 | 5.5% | 4.6% |
| Spain | 20 | 3.9% | 1.8% |
| Sweden | 16 | 3.1% | 1% |

## Which roles mention Tessy most?

Embedded Engineer and Software Development Engineer in Test roles are tied as the most common, each in 24% of the job posts naming Tessy. The top four roles cover 65% of these job posts.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Embedded Engineer | 24% | 27 | 7 | 12 |
| Software Development Engineer in Test | 24% | 27 | 8 | 9 |
| Firmware Engineer | 8.8% | 10 | 4 | 3 |
| Software Engineer | 8.8% | 10 | 3 | 2 |
| Site Reliability Engineer | 3.5% | 4 | 3 | 1 |
| Business Development | 2.7% | 3 | 0 | 1 |

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

From April to August 2026, 8 companies with 50 or more employees posted their first job naming Tessy: 4 commercial, 3 mid-market and 1 enterprise.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [AROBS Group](https://sumble.com/orgs/arobs) | 1 |
| Commercial | [Interra Information Technologies (InterraIT)](https://sumble.com/orgs/interra-it) | 1 |
| Commercial | [LTS Group](https://sumble.com/orgs/lts-group-vietnam) | 1 |
| Commercial | [HEDON TECHNOLOGIES](https://sumble.com/orgs/hedon-technologies) | 1 |
| Mid-market | [Qorvo, Inc.](https://sumble.com/orgs/qorvo) | 1 |
| Mid-market | [Rehlko](https://sumble.com/orgs/kohler-energy) | 1 |
| Mid-market | [WIKA Group](https://sumble.com/orgs/wika-sensor-technology) | 1 |

Companies that named Tessy 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 Tessy companies use?

Cantata, QAC and Polyspace show up far more often at Tessy companies than at companies of the same size. Among the tools listed here, VectorCast is the most widely used, at 28% of Tessy companies.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| Cantata | 16 | 14% | 0.02% | 693 times |
| QAC | 22 | 19% | 0.04% | 492 times |
| Polyspace | 30 | 26% | 0.06% | 406 times |
| VectorCast | 32 | 28% | 0.07% | 399 times |
| LDRA | 18 | 16% | 0.05% | 306 times |
| TPT | 13 | 11% | 0.05% | 229 times |
| Vector CANoe | 28 | 25% | 0.15% | 163 times |
| PTC Integrity | 13 | 11% | 0.07% | 163 times |

Shares are out of the 114 companies whose job posts name Tessy, 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.