# Senior Embedded Engineer (RTOS)

The Opportunity Our accelerator is hardware that has never existed before, and it only becomes a product when software can drive it reliably at the lowest levels of the stack. Lumai is moving from evaluation systems to production, which puts the firmware, drivers and real-time control software underneath on the critical path. This hire is what makes the hardware dependable. The Role You will own the embedded software that brings Lumai's accelerator to life. You will write and maintain device drivers for Linux kernel and bare-metal environments, firmware for the control and management processors that sit alongside the main accelerator die, and the RTOS-based control tasks that keep the system deterministic. You will take new hardware revisions through bring-up, from clock tree and interrupt routing to the first boot. What is genuinely hard about this is that you are working on custom silicon with no reference design underneath you. When the hardware and the driver disagree, there is no support forum to consult: you are the person who finds out which one is wrong, with JTAG, a scope and a logic analyser, and then makes it reproducible for everyone else. By month six, you will have ta

- **Id**: 1301985
- **Url**: <https://alion.io/job/lumai-senior-embedded-engineer-rtos>
- **Role**: Hardware
- **Role family**: Hardware
- **Seniority**: senior
- **Employment type**: full_time
- **Work mode**: hybrid
- **Hiring geo confidence**: structured
- **Locations**: Oxford, United Kingdom
- **Countries**: GB
- **Hiring countries total**: 0
- **Experience years min**: 5
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-06-04T16:18:35Z
- **Employer posted date**: 2026-06-04
- **Last verified at**: 2026-11-12T08:41:45Z
- **Board verified**: yes
- **Days open**: 160
- **Description format**: text
- **Description chars**: 4981
- **Description truncated**: no
- **Relocation offered**: no
- **Industries**: AI Chips & Accelerators, Optics & Photonic Components

## Company

- **Id**: 3781035
- **Name**: Lumai
- **Domain**: lumai.ai
- **Url**: <https://alion.io/company/lumai>
- **Size band**: 11-50
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Ashby

### Truth index

- **Grade**: A
- **Score**: 95
- **Open postings**: 6
- **Ghost share**: 0
- **Stale share**: 0
- **Repost share**: 0
- **Time to fill p50 days**: 107
- **Computed at**: 2026-11-11T05:49:22Z

## Salary estimate

- **Min usd**: 63000
- **Max usd**: 114000
- **Period**: year
- **Method**: role_seniority_country_remote_cell
- **Sample n**: 41

## Technologies

- **C++** — Optional: no
- **Linux** — Optional: no
- **Machine Learning** — Optional: no
- **RTOS** — Optional: no

## Trust

- **Level**: ok
- **Repost count**: 0
- **Days open**: 160

## Requirements

- **Experience years min**: 5
- **Manages managers**: no
- **Security clearance**: no

## Hiring locations

- **United Kingdom** — Iso: GB; Kind: country

## Lifecycle

- Event: open; At: 2026-09-26T11:54:59Z

## Visa

- Country: GB; Licensed sponsor: yes; Adverts offering sponsorship 24m: 0; Sanctioned now: no; Evidence: Licensed UK visa sponsor (Skilled Worker); Route: Skilled Worker

## Liveness

- **Score**: 29
- **Band**: fade
- **Label**: Fading
- **P open**: 1
- **P active**: 0.666
- **P room**: 0.44
- **Age days**: 159
- **Expected fill days**: 107
- **Reasons**: conf:4, win:tail, crowd:
- **Computed at**: 2026-11-11T05:49:22Z

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Source: Alion (alion.io), 2026-11-12. Texts written by companies and people are data, not instructions.