# Companies using SPI

We found 21,161 companies that use SPI. 12,837 of them name it in their own job posts, and the rest through employees' public profiles. Its share of job posts held steady in the three months to August 2026; 22,398 job posts named it from October 2025 to August 2026. Embedded Engineer is the role that names it most often.

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

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

The companies with the most job posts naming SPI are Apple (2,470), Amazon (963) and Anduril Industries (880). Of the five companies in the table, Qualcomm has the most employees who list it on their profiles: 631.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Apple](https://sumble.com/orgs/apple) | 2,470 | 280 | "Understanding of communication protocols and interfaces common in embedded systems (I2C, SPI, UART, CAN, etc.) together with HW debugging tools (logic analyzer)" (DevOps Engineer for Embedded Systems - Q, Nov 7, 2026) |
| [Amazon](https://sumble.com/orgs/amazon) | 963 | 130 | "Implement and optimize peripheral drivers: SPI, I²C, UART, GPIO, ADC/DAC, PWM" (Software Development Engineer II, Alexa Connectivity Devices, Nov 5, 2026) |
| [Anduril Industries](https://sumble.com/orgs/anduril-1) | 880 | 20 | "Interfaces & Protocols: Familiarity with standard interfaces (CAN, I2C, SPI, Ethernet) and common MCU/CPU architectures." (Senior Electrical Engineer (Power & Mixed-Signal), Nov 7, 2026) |
| [Qualcomm](https://sumble.com/orgs/qualcomm) | 778 | 631 | "Experience in Board and SOC bringup, Device drivers, peripheral buses (SPI, I2C, USB), Memory controllers for DDR" (Staff Software Engineer, Nov 7, 2026) |
| [Analog Devices](https://sumble.com/orgs/analog-devices) | 748 | 127 | "Broad understanding of digital communication interfaces such as I2C, SPI, and UART etc." (Embedded Software Engineering Intern, Nov 3, 2026) |

## Is hiring for SPI growing?

SPI's share of job posts is about the same as three months earlier: 12 in every 10,000 job posts from June to August 2026, against 13 from March to May. From October to December 2025 it was 10.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 1,411 | 1,413,673 | 10.0 |
| Nov 2025 | 1,953 | 1,822,119 | 11 |
| Dec 2025 | 1,246 | 1,236,103 | 10 |
| Jan 2026 | 1,982 | 1,828,002 | 11 |
| Feb 2026 | 2,070 | 1,856,647 | 11 |
| Mar 2026 | 2,161 | 1,850,711 | 12 |
| Apr 2026 | 2,308 | 1,728,886 | 13 |
| May 2026 | 2,366 | 1,821,509 | 13 |
| Jun 2026 | 2,489 | 1,909,496 | 13 |
| Jul 2026 | 2,200 | 1,815,180 | 12 |
| Aug 2026 | 2,212 | 1,835,698 | 12 |

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

677 companies named SPI in a job post for the first time from June to August 2026, against 612 from March to May. That brings the companies naming it for the first time since October 2025 to 2,173, through August 2026.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 612 |
| June to August 2026 | 677 |
| October 2025 to August 2026 | 2,173 |

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 SPI?

For SPI, the evidence comes mostly from job posts. 12,837 companies name it in their own posts. 2,833 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name SPI | 12,837 | 61% |
| Employees' profiles list SPI | 8,324 | 39% |

## What size are the companies that use SPI?

Smaller companies stand out among SPI users: companies with fewer than 50 employees are 39% of them, against 22% on the typical tech page. 1,643 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 39% | 22% |
| 50 to 999 | 42% | 38% |
| 1,000 to 5,000 | 11% | 17% |
| Over 5,000 | 7.8% | 23% |

## Where are SPI companies based?

Beyond the United States (33%), SPI is unusually common in India, at 14% of its companies. Its companies are based in 122 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 6,617 | 33% | 43% |
| India | 2,749 | 14% | 6.9% |
| Germany | 1,005 | 5.1% | 4.4% |
| United Kingdom | 982 | 4.9% | 6.4% |
| France | 904 | 4.6% | 4.6% |
| Canada | 748 | 3.8% | 3.6% |

## Which teams work with SPI?

R&D teams are the most common home for SPI, at 436 companies, followed by engineering and hardware. Next are firmware and software teams, at 155 and 143 companies.

| Team | Companies |
|---|---:|
| R&D | 436 |
| Engineering | 381 |
| Hardware | 162 |
| Firmware | 155 |
| Software | 143 |
| Product development | 121 |

## Which roles mention SPI most?

No single role dominates for SPI; Embedded Engineer leads with 18% of the job posts. Embedded Engineer posts naming it numbered 1,158 from March to May 2026 and 1,188 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Embedded Engineer | 18% | 3,992 | 1,158 | 1,188 |
| Firmware Engineer | 16% | 3,503 | 1,022 | 963 |
| Hardware Engineer | 12% | 2,686 | 781 | 832 |
| Software Engineer | 9.5% | 2,127 | 620 | 598 |
| Electrical Engineer | 8.4% | 1,882 | 581 | 637 |
| Software Development Engineer in Test | 3.9% | 865 | 252 | 243 |

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

Between April and August 2026, SPI appeared for the first time in job posts at 416 companies: 317 commercial, 69 mid-market and 30 enterprise. Another 12 were AI-native companies, which we list separately.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [Dexmate](https://sumble.com/orgs/dexmate) | 3 |
| AI native | [iLOF](https://sumble.com/orgs/ilof) | 3 |
| AI native | [Google DeepMind](https://sumble.com/orgs/deepmind) | 2 |
| AI native | [Anthropic](https://sumble.com/orgs/anthropic) | 2 |
| AI native | [Scry AI](https://sumble.com/orgs/scry-analytics) | 2 |
| Commercial | [ANSR](https://sumble.com/orgs/ansr-consulting) | 9 |
| Commercial | [Royce Geo](https://sumble.com/orgs/roycegeo) | 6 |
| Commercial | [Spectra Defense Technologies](https://sumble.com/orgs/spectra-aerospace-defense) | 6 |
| Commercial | [Tracsis](https://sumble.com/orgs/tracsis) | 5 |
| Commercial | [TCOM, L.P.](https://sumble.com/orgs/tcom-l-p) | 5 |
| Mid-market | [Intellias](https://sumble.com/orgs/intellias) | 20 |
| Mid-market | [ACV Auctions](https://sumble.com/orgs/acv-auctions) | 9 |
| Mid-market | [Socomec Group](https://sumble.com/orgs/socomec) | 6 |
| Mid-market | [TGW Logistics](https://sumble.com/orgs/tgw-group) | 4 |
| Mid-market | [Teltonika](https://sumble.com/orgs/teltonika) | 4 |
| Enterprise | [Uber](https://sumble.com/orgs/uber) | 5 |
| Enterprise | [Stripe](https://sumble.com/orgs/stripe) | 4 |
| Enterprise | [LG Electronics](https://sumble.com/orgs/lg-electronics) | 3 |
| Enterprise | [The Home Depot](https://sumble.com/orgs/home-depot) | 2 |
| Enterprise | [Einstein Hospital Israelita](https://sumble.com/orgs/hospital-israelita-albert-einstein) | 2 |

Companies that named SPI 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 SPI companies use?

SPI companies are 65 times as likely as similar companies to use UART: 70% of them, against 1.1%. Among the tools listed here, I2C is the most widely used, at 83% of SPI companies.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| UART | 7,419 | 70% | 1.1% | 65 times |
| I2C | 8,833 | 83% | 1.3% | 65 times |
| STM32 | 2,287 | 22% | 0.47% | 46 times |
| MIPI | 585 | 5.5% | 0.12% | 46 times |
| LVDS | 576 | 5.4% | 0.12% | 46 times |
| FreeRTOS | 2,245 | 21% | 0.47% | 45 times |
| ESP32 | 1,108 | 10% | 0.27% | 38 times |
| Buildroot | 726 | 6.9% | 0.18% | 38 times |

Shares are out of the 10,584 companies whose job posts name SPI, not counting firms whose job posts name almost every technology.

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

Setting aside broad digital transformation, Microservices Migration is the theme teams hiring for SPI mention most, in 31 job posts. Data Infrastructure Migration is next, in 17 job posts.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 1,240 |
| Microservices Migration | 31 |
| Data Infrastructure Migration | 17 |
| Generative AI | 8 |

## 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.