633 companies in our data use SDIO, and 379 of them name it in job posts they wrote. 384 job posts named it from October 2025 to August 2026. Firmware Engineer is the role that names it most often.
The five companies with the most job posts naming SDIO are NXP Semiconductors, Qualcomm, Synaptics Incorporated, Silicon Labs and Morse Micro. Of the five companies in the table, Qualcomm has the most employees who list it on their profiles: 32.
CompanyPostsPeopleRecent job post
NXP SemiconductorsManufacturing · first seen Sep 20221155
"Knowledge of interfaces like UART, SDIO, I2C, SPI, etc."Junior Customer Support Engineer, Oct 28, 2026
QualcommScientific and Technical Services · first seen Sep 20229432
"Perform system bring-up, including driver integration for image sensors, NOR/NAND flash, and connectivity modules (SDIO / USB WiFi)"Platform Engineer - IoT Camera System / Embedded Linux, Jul 7, 2026
Synaptics IncorporatedScientific and Technical Services · first seen Oct 2023556
"Ability to utilize different device protocols (I2C, JTAG, SDIO, etc.) to communicate with device"Staff Test Development Engineer, May 22, 2026
Silicon LabsScientific and Technical Services · first seen Mar 2023528
"…technology and AMBA AHB/AXI/APB protocols along with peripheral interfaces like SDIO, UART, I2S, I2C, PWM."Verification Lead, May 12, 2026
Morse MicroManufacturing · first seen May 2023390
"Understand hardware concepts such as GPIO, SPI, SDIO, I2C"Senior Software Engineer, Jul 2, 2026
From March to May 2026, 0.22 in every 10,000 job posts named SDIO; from June to August, 0.20 in every 10,000 job posts. These are small numbers of job posts, so a few companies can move them.
Show the data
Month
Job posts naming SDIO
All job posts
Per 10,000
Oct 2025
27
1,413,673
0.19
Nov 2025
37
1,822,119
0.20
Dec 2025
23
1,236,103
0.19
Jan 2026
34
1,828,002
0.19
Feb 2026
33
1,856,647
0.18
Mar 2026
38
1,850,711
0.21
Apr 2026
46
1,728,886
0.27
May 2026
36
1,821,509
0.20
Jun 2026
38
1,909,496
0.20
Jul 2026
35
1,815,180
0.19
Aug 2026
37
1,835,698
0.20
How many companies named SDIO in a job post for the first time in recent months?
From June to August 2026, 15 companies posted their first job naming SDIO; 20 did from March to May. Of the 379 companies whose job posts name it, 4% first named it from June to August.
March to May 202620
June to August 202615
October 2025 to August 202658
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 SDIO?
379 of the 633 companies name SDIO in their own job posts. The other 254 show up because employees list it on their profiles. 60 show up in both job posts and employees' profiles.
How we knowCompaniesShare
Job posts name SDIO
37960%
Employees' profiles list SDIO
25440%
633 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use SDIO?
By size, SDIO users are close to the typical tech page; companies with 50 to 999 employees are the largest group (38%). 149 of its companies have more than 5,000 employees.
Share of its companies
Typical tech page
ShareTypical
Under 50 employees
22%22%
50 to 999
38%38%
1,000 to 5,000
16%17%
Over 5,000
24%23%
Where are SDIO companies based?
The United States has the most SDIO companies (43%), but China stands out: 7.3% of them, against 0.48% on the typical tech page. Its companies are based in 39 countries and territories.
ShareTypical
United States
43%43%
India
17%6.9%
China
7.3%0.48%
France
3.6%4.6%
Germany
3.3%4.4%
United Kingdom
2.8%6.4%
Companies in 39 countries and territories. Shares are of companies with a known headquarters country.
Show the data
Country
Companies
Share
Typical tech page
United States
261
43%
43%
India
103
17%
6.9%
China
44
7.3%
0.48%
France
22
3.6%
4.6%
Germany
20
3.3%
4.4%
United Kingdom
17
2.8%
6.4%
Which teams work with SDIO?
No team dominates SDIO job posts. Engineering comes first, at 8 companies.
TeamCompanies
Engineering
8
Hardware
7
Hardware engineering
5
R&D
5
Software
4
Applications
3
What else do SDIO companies use?
eMMC, Verdi and Fusion Compiler show up far more often at SDIO companies than at companies of the same size. Genus comes fourth, 183 times as common as usual, at 6.1%.
Share of the 246 SDIO companies counted here whose job posts also name the tool
Typical for companies the same size
Which companies started naming SDIO in job posts recently?
19 companies with 50 or more employees picked up SDIO in their job posts from April to August 2026. Ring has the most job posts of the new mid-market companies, 5 from April to August.
Companies that named SDIO 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 SDIO most?
Firmware Engineer and Software Engineer roles account for 28% of the job posts that name SDIO. Firmware Engineer posts naming it numbered 15 from March to May 2026 and 16 from June to August.
RoleSharePosts
Firmware Engineer
14%55
Software Engineer
13%51
Hardware Engineer
12%46
Embedded Engineer
9.6%37
Electrical Engineer
8.1%31
Customer Engineer
5.7%22
Show the data
Role
Share
Oct 2025 to Aug 2026
Mar to May 2026
Jun to Aug 2026
Firmware Engineer
14%
55
15
16
Software Engineer
13%
51
17
6
Hardware Engineer
12%
46
15
12
Embedded Engineer
9.6%
37
8
11
Electrical Engineer
8.1%
31
12
9
Customer Engineer
5.7%
22
5
6
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.
