# Companies using RS485

8,542 companies use RS485, based on their job posts and their employees' public profiles. Hiring for it is steady, with 4,491 job posts naming it from October 2025 to August 2026. Engineering teams are its most common home.

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

## Which companies name RS485 in the most job posts?

QE Solar, Anduril Industries and Honeywell Technologies mention RS485 in the most job posts. QE Solar is the newest of the five companies in the table, with its first job post naming it in November 2023.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [QE Solar](https://sumble.com/orgs/qe-solar) | 436 | 0 | "IT/networking skills: familiarity with RS485, Modbus, tcp/ip, etc." (Solar Field Technician -Gowanda, NY, Oct 28, 2026) |
| [Anduril Industries](https://sumble.com/orgs/anduril-1) | 297 | 11 | "Experience with computer hardware communication protocols: USB, Ethernet, RS232, RS485, PCIe, HDMI, CAN, etc." (Production Test Engineering Manager, EW, Nov 7, 2026) |
| [Honeywell Technologies](https://sumble.com/orgs/honeywell) | 294 | 38 | "Design and validate protocol integrations (such as BACnet, Modbus, RS-485, and IP) while identifying and mitigating design risks for effective project execution." (Sr Application Systems Engineer m/f/d, Nov 3, 2026) |
| [Schneider Electric](https://sumble.com/orgs/schneider-electric) | 268 | 62 | "BACnet, Modbus, IP/Ethernet, RS-485, and modern wireless and IoT connectivity stacks." (Director, Innovation and Technology Management, Oct 22, 2026) |
| [Amazon](https://sumble.com/orgs/amazon) | 191 | 17 | "Write software to interact with devices/electronics using I2C, I3C, SPI, RS-422, RS-485, Ethernet, etc." (embedded sde, payload radio gateway, Nov 4, 2026) |

## Is hiring for RS485 growing?

Demand for RS485 is steady: 2.6 in every 10,000 job posts from June to August 2026, close to the 2.4 of March to May. From October to December 2025 it was 2.1.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 271 | 1,413,673 | 1.9 |
| Nov 2025 | 373 | 1,822,119 | 2.0 |
| Dec 2025 | 273 | 1,236,103 | 2.2 |
| Jan 2026 | 384 | 1,828,002 | 2.1 |
| Feb 2026 | 414 | 1,856,647 | 2.2 |
| Mar 2026 | 450 | 1,850,711 | 2.4 |
| Apr 2026 | 403 | 1,728,886 | 2.3 |
| May 2026 | 453 | 1,821,509 | 2.5 |
| Jun 2026 | 471 | 1,909,496 | 2.5 |
| Jul 2026 | 490 | 1,815,180 | 2.7 |
| Aug 2026 | 509 | 1,835,698 | 2.8 |

## How many companies named RS485 in a job post for the first time in recent months?

From June to August 2026, 297 companies posted their first job naming RS485; 211 did from March to May. Over the 11 months from October 2025, 847 companies posted their first job naming it.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 211 |
| June to August 2026 | 297 |
| October 2025 to August 2026 | 847 |

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 RS485?

The evidence for RS485 is close to even: 53% of these companies name it in job posts, and 47% come from employees' profiles. 653 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name RS485 | 4,562 | 53% |
| Employees' profiles list RS485 | 3,980 | 47% |

## What size are the companies that use RS485?

Smaller companies stand out among RS485 users: companies with fewer than 50 employees are 34% of them, against 22% on the typical tech page. 883 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 34% | 22% |
| 50 to 999 | 43% | 38% |
| 1,000 to 5,000 | 12% | 17% |
| Over 5,000 | 10% | 23% |

## Where are RS485 companies based?

The United States has the most RS485 companies (32%), but India stands out: 15% of them, against 6.9% on the typical tech page. Its companies are based in 100 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 2,563 | 32% | 43% |
| India | 1,188 | 15% | 6.9% |
| United Kingdom | 395 | 4.9% | 6.4% |
| Germany | 359 | 4.5% | 4.4% |
| France | 319 | 4% | 4.6% |
| Canada | 294 | 3.6% | 3.6% |

## Which teams work with RS485?

No team dominates RS485 job posts. Engineering comes first, at 126 companies.

| Team | Companies |
|---|---:|
| Engineering | 126 |
| R&D | 91 |
| Electrical engineering | 26 |
| Product development | 26 |
| Research & development | 23 |
| Software | 23 |

## Which roles mention RS485 most?

No single role dominates for RS485; Electrical Engineer leads with 13% of the job posts. Embedded Engineer is second, at 11%.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Electrical Engineer | 13% | 569 | 158 | 194 |
| Embedded Engineer | 11% | 507 | 151 | 155 |
| Firmware Engineer | 9.4% | 421 | 153 | 106 |
| Hardware Engineer | 8.3% | 373 | 96 | 133 |
| Software Engineer | 7.4% | 332 | 96 | 105 |
| Skilled Trades | 6.7% | 299 | 83 | 75 |

## Which companies started naming RS485 in job posts recently?

212 companies with 50 or more employees picked up RS485 in their job posts from April to August 2026. Among the new commercial companies, Quantum Space posted the most jobs naming it: 11.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [Nimble](https://sumble.com/orgs/nimble-robotics) | 1 |
| AI native | [Prepaire Labs](https://sumble.com/orgs/prepare-com) | 1 |
| AI native | [Genovation](https://sumble.com/orgs/genovation-solutions) | 1 |
| AI native | [EmbodyX](https://sumble.com/orgs/embodyx) | 1 |
| Commercial | [Quantum Space](https://sumble.com/orgs/quantum-space) | 11 |
| Commercial | [MWI Animal Health](https://sumble.com/orgs/mwi) | 7 |
| Commercial | [Royce Geo](https://sumble.com/orgs/roycegeo) | 6 |
| Commercial | [Tracsis](https://sumble.com/orgs/tracsis) | 5 |
| Commercial | [Aquablu](https://sumble.com/orgs/aquablu) | 5 |
| Mid-market | [Terma Group](https://sumble.com/orgs/terma) | 4 |
| Mid-market | [Fluidra](https://sumble.com/orgs/fluidra) | 3 |
| Mid-market | [Teltonika](https://sumble.com/orgs/teltonika) | 3 |
| Mid-market | [NETGEAR](https://sumble.com/orgs/netgear) | 3 |
| Mid-market | [Mirafra Technologies](https://sumble.com/orgs/mirafra-technologies) | 2 |
| Enterprise | [Parsons Corporation](https://sumble.com/orgs/parsons) | 7 |
| Enterprise | [CBRE](https://sumble.com/orgs/cbre) | 6 |
| Enterprise | [LG Electronics](https://sumble.com/orgs/lg-electronics) | 5 |
| Enterprise | [Ferrero](https://sumble.com/orgs/ferrero) | 3 |
| Enterprise | [Hubbell Incorporated](https://sumble.com/orgs/connector-manufacturing-company-ref) | 3 |

Companies that named RS485 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 RS485 companies use?

RS422, RS232 and STM32 show up far more often at RS485 companies than at companies of the same size. Next is I2C: 53% of these companies use it, against 1.4% of similar ones.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| RS422 | 433 | 12% | 0.14% | 84 times |
| RS232 | 1,780 | 49% | 0.66% | 75 times |
| STM32 | 763 | 21% | 0.52% | 41 times |
| I2C | 1,921 | 53% | 1.4% | 37 times |
| LVDS | 181 | 5% | 0.14% | 36 times |
| UART | 1,555 | 43% | 1.2% | 36 times |
| SPI | 2,054 | 57% | 1.6% | 35 times |
| KiCad | 530 | 15% | 0.43% | 34 times |

Shares are out of the 3,599 companies whose job posts name RS485, not counting firms whose job posts name almost every technology.

## Which project themes come up in RS485 job posts?

Beyond general digital transformation, the most common project theme in RS485 job posts is Microservices Migration (21 posts). Data Infrastructure Migration is next, in 4 job posts.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 342 |
| Microservices Migration | 21 |
| Data Infrastructure Migration | 4 |

## 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.