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.
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.
CompanyPostsPeopleRecent job post
QE SolarUtilities · first seen Nov 20234360
"IT/networking skills: familiarity with RS485, Modbus, tcp/ip, etc."Solar Field Technician -Gowanda, NY, Oct 28, 2026
Anduril IndustriesManufacturing · first seen Sep 202229711
"Experience with computer hardware communication protocols: USB, Ethernet, RS232, RS485, PCIe, HDMI, CAN, etc."Production Test Engineering Manager, EW, Nov 7, 2026
Honeywell TechnologiesManufacturing · first seen Feb 202329438
"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 ElectricUtilities · first seen Aug 202226862
"BACnet, Modbus, IP/Ethernet, RS-485, and modern wireless and IoT connectivity stacks."Director, Innovation and Technology Management, Oct 22, 2026
AmazonRetail Trade · first seen Aug 202219117
"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
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.
Show the data
Month
Job posts naming RS485
All job posts
Per 10,000
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.
March to May 2026211
June to August 2026297
October 2025 to August 2026847
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 knowCompaniesShare
Job posts name RS485
4,56253%
Employees' profiles list RS485
3,98047%
8,542 companies. Each is counted once, under the strongest evidence we have for it.
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.
Share of its companies
Typical tech page
ShareTypical
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.
ShareTypical
United States
32%43%
India
15%6.9%
United Kingdom
4.9%6.4%
Germany
4.5%4.4%
France
4%4.6%
Canada
3.6%3.6%
Companies in 100 countries and territories. Shares are of companies with a known headquarters country.
Show the data
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.
TeamCompanies
Engineering
126
R&D
91
Electrical engineering
26
Product development
26
Research & development
23
Software
23
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.
Share of the 3,599 RS485 companies counted here whose job posts also name the tool
Typical for companies the same size
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.
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.
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%.
RoleSharePosts
Electrical Engineer
13%569
Embedded Engineer
11%507
Firmware Engineer
9.4%421
Hardware Engineer
8.3%373
Software Engineer
7.4%332
Skilled Trades
6.7%299
Show the data
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 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 themeJob posts
Digital Transformation342
Microservices Migration21
Data Infrastructure Migration4
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.
