# Companies using SpaceWire

497 companies use SpaceWire, based on their job posts and their employees' public profiles. Hiring for it is steady, with 818 job posts naming it from October 2025 to August 2026. Hardware Engineer roles mention it most.

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

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

MDA Space, Blue Origin and Northrop Grumman mention SpaceWire in the most job posts. All five companies are in Manufacturing.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [MDA Space](https://sumble.com/orgs/mda-1) | 194 | 5 | "Lead detailed design of on‑board processors, data‑buses (SpaceWire, MIL‑1553, CAN, Ethernet), memory subsystems, and I/O interfaces." (satellite command & data‑handling (c&dh) system engineer, Nov 7, 2026) |
| [Blue Origin](https://sumble.com/orgs/blue-origin) | 119 | 0 | "Experience integrating communication systems into larger systems, including definition of management and data interfaces using protocols like RS-422, Ethernet, SpaceWire, HDLC, etc." (Senior Communications Systems Engineer - Lunar Permanence, Nov 4, 2026) |
| [Northrop Grumman](https://sumble.com/orgs/northrop-grumman) | 118 | 5 | "Develop embedded software modules and have familiarity with data protocols including UART, Synchronous Serial, MIL-STD-1553, SPACEWIRE, SPI, discrete digital and analog IO, and others" (Embedded Software Engineer – Level 2, Oct 22, 2026) |
| [Thales](https://sumble.com/orgs/thales) | 105 | 2 | "Vous avez des connaissances FPGA, environnement SoC, bus industriels (1553, Spacewire, I2C, SPI…) ?" (engineer in charge of altimetry test benches (h/f), Oct 27, 2026) |
| [L3Harris Technologies](https://sumble.com/orgs/l3harris) | 55 | 4 | "Control protocols such I2C, SPI, RS-232/422, and SpaceWire" (Lead, Sr FPGA Firmware Design Engineer, Feb 28, 2025) |

## Is hiring for SpaceWire growing?

SpaceWire's share of job posts is about the same as three months earlier: 0.52 in every 10,000 job posts from June to August 2026, against 0.49 from March to May. Its busiest month was May 2026, at 0.63.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 48 | 1,413,673 | 0.34 |
| Nov 2025 | 57 | 1,822,119 | 0.31 |
| Dec 2025 | 42 | 1,236,103 | 0.34 |
| Jan 2026 | 54 | 1,828,002 | 0.30 |
| Feb 2026 | 68 | 1,856,647 | 0.37 |
| Mar 2026 | 73 | 1,850,711 | 0.39 |
| Apr 2026 | 74 | 1,728,886 | 0.43 |
| May 2026 | 115 | 1,821,509 | 0.63 |
| Jun 2026 | 93 | 1,909,496 | 0.49 |
| Jul 2026 | 103 | 1,815,180 | 0.57 |
| Aug 2026 | 91 | 1,835,698 | 0.50 |

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

30 companies named SpaceWire in a job post for the first time from June to August 2026, against 27 from March to May. From October 2025 to August 2026, 97 companies named it in a job post for the first time.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 27 |
| June to August 2026 | 30 |
| October 2025 to August 2026 | 97 |

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 SpaceWire?

384 companies name SpaceWire in job posts they wrote, and employees' profiles add 113 more. 40 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name SpaceWire | 384 | 77% |
| Employees' profiles list SpaceWire | 113 | 23% |

## What size are the companies that use SpaceWire?

43% of SpaceWire users are companies with 50 to 999 employees, the largest size group. 92 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 25% | 22% |
| 50 to 999 | 43% | 38% |
| 1,000 to 5,000 | 13% | 17% |
| Over 5,000 | 19% | 23% |

## Where are SpaceWire companies based?

SpaceWire has an unusually large following in Italy: 6.9% of its companies, against 1.5% on the typical tech page. France is second, at 14%.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 209 | 44% | 43% |
| France | 65 | 14% | 4.6% |
| Italy | 33 | 6.9% | 1.5% |
| Germany | 26 | 5.5% | 4.4% |
| Spain | 24 | 5.1% | 1.8% |
| United Kingdom | 22 | 4.6% | 6.4% |

## Which teams work with SpaceWire?

Flight software teams are the most common home for SpaceWire, at 11 companies, followed by avionics and ait.

| Team | Companies |
|---|---:|
| Flight software | 11 |
| Avionics | 8 |
| Ait | 7 |
| Software | 6 |
| Egse | 3 |
| Electronics | 3 |

## Which roles mention SpaceWire most?

Electrical Engineer job posts naming SpaceWire grew the fastest among its top roles: 38 from June to August 2026, up from 16 from March to May. Embedded Engineer is second, at 11%.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Hardware Engineer | 12% | 96 | 31 | 35 |
| Embedded Engineer | 11% | 92 | 26 | 26 |
| Aerospace Engineer | 10% | 84 | 23 | 31 |
| Software Development Engineer in Test | 8.9% | 73 | 24 | 19 |
| Electrical Engineer | 8.7% | 71 | 16 | 38 |
| Software Engineer | 7.2% | 59 | 20 | 18 |

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

26 companies with 50 or more employees picked up SpaceWire in their job posts from April to August 2026. SII Group Romania leads the new commercial companies, with 9 job posts from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [SII Group Romania](https://sumble.com/orgs/sii-romania) | 9 |
| Commercial | [True Anomaly](https://sumble.com/orgs/true-anomaly) | 5 |
| Commercial | [TurinTech SpA](https://sumble.com/orgs/turin-tech) | 3 |
| Commercial | [Katalyst Space](https://sumble.com/orgs/katalyst-space) | 3 |
| Commercial | [OHB Digital Connect GmbH](https://sumble.com/orgs/ohb-digital-connect) | 2 |
| Mid-market | [Vantor](https://sumble.com/orgs/vantortech) | 2 |
| Mid-market | [Firefly Aerospace](https://sumble.com/orgs/firefly-aerospace) | 2 |
| Mid-market | [Astek Inc](https://sumble.com/orgs/astek-940a357f) | 1 |
| Mid-market | [ICEYE](https://sumble.com/orgs/iceye) | 1 |
| Enterprise | [University of Colorado Boulder](https://sumble.com/orgs/university-of-colorado) | 1 |
| Enterprise | [AFRY](https://sumble.com/orgs/afry) | 1 |
| Enterprise | [Astra](https://sumble.com/orgs/astra) | 1 |

Companies that named SpaceWire 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 SpaceWire companies use?

SpaceWire companies are 811 times as likely as similar companies to use RTEMS: 29% of them, against 0.04%. Microsemi is 652 times as common as usual, at 17%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| RTEMS | 70 | 29% | 0.04% | 811 times |
| Microsemi | 40 | 17% | 0.03% | 652 times |
| Libero | 31 | 13% | 0.03% | 383 times |
| Intel/Altera | 19 | 7.9% | 0.02% | 342 times |
| RS422 | 113 | 47% | 0.14% | 326 times |
| Synplify | 12 | 5% | 0.02% | 316 times |
| Microblaze | 18 | 7.5% | 0.03% | 282 times |
| FEMAP | 87 | 36% | 0.13% | 280 times |

Shares are out of the 240 companies whose job posts name SpaceWire, 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.