# Companies using SDIO

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.

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

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

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.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [NXP Semiconductors](https://sumble.com/orgs/nxp-semiconductors) | 115 | 5 | "Knowledge of interfaces like UART, SDIO, I2C, SPI, etc." (Junior Customer Support Engineer, Oct 28, 2026) |
| [Qualcomm](https://sumble.com/orgs/qualcomm) | 94 | 32 | "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 Incorporated](https://sumble.com/orgs/synaptics) | 55 | 6 | "Ability to utilize different device protocols (I2C, JTAG, SDIO, etc.) to communicate with device" (Staff Test Development Engineer, May 22, 2026) |
| [Silicon Labs](https://sumble.com/orgs/silicon-labs) | 52 | 8 | "…technology and AMBA AHB/AXI/APB protocols along with peripheral interfaces like SDIO, UART, I2S, I2C, PWM." (Verification Lead, May 12, 2026) |
| [Morse Micro](https://sumble.com/orgs/morse-micro) | 39 | 0 | "Understand hardware concepts such as GPIO, SPI, SDIO, I2C" (Senior Software Engineer, Jul 2, 2026) |

## Is hiring for SDIO growing?

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.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| 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.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 20 |
| June to August 2026 | 15 |
| October 2025 to August 2026 | 58 |

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 know | Companies | Share |
|---|---:|---:|
| Job posts name SDIO | 379 | 60% |
| Employees' profiles list SDIO | 254 | 40% |

## 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.

| Size | Share | Typical tech page |
|---|---:|---:|
| 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.

| 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.

| Team | Companies |
|---|---:|
| Engineering | 8 |
| Hardware | 7 |
| Hardware engineering | 5 |
| R&D | 5 |
| Software | 4 |
| Applications | 3 |

## 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.

| 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 |

## 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.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [ThunderSoft](https://sumble.com/orgs/thundersoft) | 2 |
| Commercial | [Delart](https://sumble.com/orgs/delart) | 2 |
| Commercial | [Cradlepoint](https://sumble.com/orgs/cradlepoint-part-of-ericsson) | 1 |
| Commercial | [Scaledge Technology](https://sumble.com/orgs/scaledge-technology) | 1 |
| Commercial | [SEMIFIVE](https://sumble.com/orgs/semifive) | 1 |
| Mid-market | [Ring](https://sumble.com/orgs/ring) | 5 |
| Mid-market | [Netradyne](https://sumble.com/orgs/netradyne) | 2 |
| Mid-market | [MDA Space](https://sumble.com/orgs/mda-1) | 1 |
| Enterprise | [Ericsson](https://sumble.com/orgs/ericsson) | 2 |
| Enterprise | [HP](https://sumble.com/orgs/hp) | 2 |
| Enterprise | [Motorola Solutions](https://sumble.com/orgs/motorola-solutions) | 2 |
| Enterprise | [Persistent Systems](https://sumble.com/orgs/persistent-systems) | 1 |
| Enterprise | [DoorDash](https://sumble.com/orgs/doordash) | 1 |

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.

## 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%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| eMMC | 49 | 20% | 0.08% | 265 times |
| Verdi | 24 | 9.8% | 0.04% | 228 times |
| Fusion Compiler | 14 | 5.7% | 0.03% | 201 times |
| Genus | 15 | 6.1% | 0.03% | 183 times |
| uCOS | 14 | 5.7% | 0.03% | 182 times |
| MIPI | 73 | 30% | 0.17% | 176 times |
| Zebu | 15 | 6.1% | 0.04% | 173 times |
| Innovus | 27 | 11% | 0.06% | 172 times |

Shares are out of the 246 companies whose job posts name SDIO, 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.