# Companies using I2C

22,053 companies in our data use I2C, and 11,570 of them name it in job posts they wrote. Hiring for it is steady, with 19,170 job posts naming it from October 2025 to August 2026. Embedded Engineer roles mention it most.

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

## Which companies name I2C in the most job posts?

Apple, Anduril Industries and Qualcomm are among the companies with the most job posts naming I2C. Of the five companies in the table, Qualcomm has the most employees who list it on their profiles: 1,135.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [Apple](https://sumble.com/orgs/apple) | 2,348 | 481 | "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) |
| [Anduril Industries](https://sumble.com/orgs/anduril-1) | 879 | 44 | "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) | 832 | 1,135 | "SoC–PMIC interface validation: Validate the SPMI (or similar, e.g., I2C/I3C) controller, PMIC arbiter and protocol behavior, including command sequences, arbitration across…" (Pre/Post Silicon Validation Engineer with PMIC Expertise, Nov 1, 2026) |
| [Amazon](https://sumble.com/orgs/amazon) | 803 | 216 | "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) |
| [Analog Devices](https://sumble.com/orgs/analog-devices) | 762 | 209 | "Firmware, DPS or FPGA programming and I2C/PMbus experience (preferred)." (Senior Power Module Design Engineer, Nov 4, 2026) |

## Is hiring for I2C growing?

Hiring for I2C barely changed, at 10 in every 10,000 job posts from June to August 2026 against 11 from March to May. From October to December 2025 it was 8.9.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 1,237 | 1,413,673 | 8.8 |
| Nov 2025 | 1,711 | 1,822,119 | 9.4 |
| Dec 2025 | 1,050 | 1,236,103 | 8.5 |
| Jan 2026 | 1,685 | 1,828,002 | 9.2 |
| Feb 2026 | 1,794 | 1,856,647 | 9.7 |
| Mar 2026 | 1,847 | 1,850,711 | 10.0 |
| Apr 2026 | 1,970 | 1,728,886 | 11 |
| May 2026 | 2,038 | 1,821,509 | 11 |
| Jun 2026 | 2,085 | 1,909,496 | 11 |
| Jul 2026 | 1,896 | 1,815,180 | 10 |
| Aug 2026 | 1,857 | 1,835,698 | 10 |

## How many companies named I2C in a job post for the first time in recent months?

541 companies named I2C in a job post for the first time from June to August 2026, against 531 from March to May. Of the 11,570 companies whose job posts name it, 4.7% first named it from June to August.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 531 |
| June to August 2026 | 541 |
| October 2025 to August 2026 | 1,772 |

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 I2C?

11,570 of the 22,053 companies name I2C in their own job posts. The other 10,483 show up because employees list it on their profiles. 3,486 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name I2C | 11,570 | 52% |
| Employees' profiles list I2C | 10,483 | 48% |

## What size are the companies that use I2C?

I2C skews toward smaller firms. 41% of its users are companies with fewer than 50 employees, against 22% on the typical tech page. 1,520 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 41% | 22% |
| 50 to 999 | 42% | 38% |
| 1,000 to 5,000 | 10% | 17% |
| Over 5,000 | 6.9% | 23% |

## Where are I2C companies based?

I2C has an unusually large following in India: 16% of its companies, against 6.9% on the typical tech page. Its companies are based in 113 countries and territories.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 7,151 | 34% | 43% |
| India | 3,246 | 16% | 6.9% |
| United Kingdom | 1,089 | 5.3% | 6.4% |
| Germany | 1,075 | 5.2% | 4.4% |
| France | 884 | 4.3% | 4.6% |
| Canada | 854 | 4.1% | 3.6% |

## Which teams work with I2C?

R&D teams are the most common home for I2C, at 396 companies, followed by engineering and hardware. Next are firmware and software teams, at 138 and 129 companies.

| Team | Companies |
|---|---:|
| R&D | 396 |
| Engineering | 356 |
| Hardware | 161 |
| Firmware | 138 |
| Software | 129 |
| Product development | 115 |

## Which roles mention I2C most?

Embedded Engineer and Firmware Engineer roles account for 34% of the job posts that name I2C. Embedded Engineer posts naming it numbered 1,016 from March to May 2026 and 1,015 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Embedded Engineer | 18% | 3,474 | 1,016 | 1,015 |
| Firmware Engineer | 16% | 3,110 | 919 | 870 |
| Hardware Engineer | 12% | 2,302 | 676 | 712 |
| Software Engineer | 10% | 2,005 | 582 | 563 |
| Electrical Engineer | 8.9% | 1,697 | 510 | 562 |
| Software Development Engineer in Test | 4.1% | 795 | 219 | 216 |

## Which companies started naming I2C in job posts recently?

From April to August 2026, 337 companies with 50 or more employees posted their first job naming I2C: 257 commercial, 55 mid-market and 25 enterprise. Another 15 were AI-native companies, which we list separately.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| AI native | [Anthropic](https://sumble.com/orgs/anthropic) | 2 |
| AI native | [Helsing](https://sumble.com/orgs/helsing) | 2 |
| AI native | [Scry AI](https://sumble.com/orgs/scry-analytics) | 2 |
| AI native | [Bespoke Labs](https://sumble.com/orgs/bespokelabsai) | 2 |
| AI native | [Google DeepMind](https://sumble.com/orgs/deepmind) | 1 |
| Commercial | [Varda Space Industries](https://sumble.com/orgs/varda-space-industries) | 12 |
| 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 | [Delta System & Software, Inc.](https://sumble.com/orgs/delta-ssi) | 5 |
| Mid-market | [Intellias](https://sumble.com/orgs/intellias) | 20 |
| Mid-market | [ACV Auctions](https://sumble.com/orgs/acv-auctions) | 9 |
| Mid-market | [Teltonika](https://sumble.com/orgs/teltonika) | 4 |
| Mid-market | [MED-EL](https://sumble.com/orgs/med-el) | 4 |
| Mid-market | [Wissen Technology](https://sumble.com/orgs/wissen-technology-private-limited) | 3 |
| Enterprise | [Avery Dennison](https://sumble.com/orgs/avery-dennison) | 9 |
| Enterprise | [Uber](https://sumble.com/orgs/uber) | 5 |
| Enterprise | [Sandoz](https://sumble.com/orgs/sandoz) | 5 |
| Enterprise | [Stadler](https://sumble.com/orgs/stadler-rail-group) | 5 |
| Enterprise | [Stripe](https://sumble.com/orgs/stripe) | 4 |

Companies that named I2C 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 I2C companies use?

Compared with companies of the same size, I2C companies stand out for using UART and SPI. MIPI is 50 times as common as usual, at 6%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| UART | 6,894 | 73% | 1.1% | 68 times |
| SPI | 8,833 | 93% | 1.4% | 65 times |
| MIPI | 565 | 6% | 0.12% | 50 times |
| LVDS | 539 | 5.7% | 0.12% | 48 times |
| STM32 | 2,104 | 22% | 0.46% | 48 times |
| FreeRTOS | 2,101 | 22% | 0.47% | 47 times |
| Buildroot | 695 | 7.3% | 0.18% | 41 times |
| RS422 | 476 | 5% | 0.12% | 41 times |

Shares are out of the 9,486 companies whose job posts name I2C, not counting firms whose job posts name almost every technology.

## Which project themes come up in I2C job posts?

Setting aside broad digital transformation, Microservices Migration is the theme teams hiring for I2C mention most, in 28 job posts. Broad digital transformation work shows up in 981 of its job posts.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 981 |
| Microservices Migration | 28 |
| Data Infrastructure Migration | 18 |
| Generative AI | 9 |

## 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.