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Senior Systems Software Engineer

Fractile· Device Software
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Hybrid (London / Bristol)full-timePosted 3mo ago

About the role

Senior systems software engineer focused on the control software and firmware that powers rack-scale AI hardware, spanning bare metal, RTOS, and embedded Linux. Involves bringing up racks, ensuring update safety, reliability, and secure operations for production-critical systems.

Responsibilities

  • Develop firmware and services for management controllers at every level: rack management, BMC, and board/device controllers (RTOS and bare metal)
  • Build systems software for board and rack management, from early bring-up through to production deployment
  • Implement the critical flows that keep fleets healthy: power-on and provisioning, monitoring/telemetry, updates, recovery, and security
  • Integrate with the wider host/device stack (drivers and runtime libraries) so the system works end-to-end
  • Work closely with hardware and device software teams to define reliable interfaces, validate behaviour, and debug boundary issues

Qualifications

  • Computer Science, Electronic Engineering, Maths, Physics, or related degree and 3+ years of industry experience
  • Proven experience shipping production-critical, reliable embedded systems across two or more of: bare metal, RTOS, embedded Linux (or deep expertise in one with clear ability to ramp the others)
  • Strong C and/or Rust, and excellent engineering judgement around safety, testing, debugging, and failure modes
  • A reliability-first mindset: you design for observability, diagnosability, and recovery paths that are predictable and testable
  • Comfortable working close to the hardware/software boundary (bootloaders/BSP/kernel-adjacent work) and collaborating tightly with HW, driver, and runtime teams
  • Collaborative and high-ownership. You communicate clearly, move fast, and enjoy working through hard problems with others

Skills

Required:Embedded systems developmentC or RustObservability and reliability engineering
Nice to have:Hardware boundary collaboration

Benefits

  • Private Medical, Dental and Vision
  • Contributory Pension
  • 25 Days holiday plus bank holidays and Life/Critical Illness Insurance
Last updated Sep 10, 2026. Interested? Apply on the company site.
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About Fractile

Radically Accelerate Frontier Model Inference

Fractile is designing AI compute systems that will enable the next generation of AI scaling: frontier model inference, 25x faster, at 1/10th the cost.

frontier model inferenceAI computecompute systemsAI scalinginference hardwareprocessor innovation
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