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← Fractile

Member of Technical Staff - Security Engineering

Fractile · London, UK · Bristol, UK

Infrastructureonsite
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At a glance

Highlights

  • Build chain of trust from hardware root of trust to rack management plane.
  • Design secure boot, signed updates and remote attestation for device fleet.
  • Reinvent AI inference hardware to generate thousands of tokens per second.

What they offer

  • Meaningful equity so everyone shares in value creation
  • Private Medical, Dental and Vision
  • Contributory Pension
  • 25 days holiday plus bank holidays
  • Life/Critical Illness Insurance

Ideal candidate

Deep security engineer who thinks from silicon up and loves hands-on building across bare metal, RTOS and Linux. Comfortable with ambiguity, rigorous on threat models, and excited to shape secure-by-design hardware from first bring-up.

Requirements

  • Understand root of trust, boot chain, key hierarchy and secure interconnects under the hood
  • Design secure boot and root of trust with verified/measured boot, signing and anti-rollback
  • Secure interconnects with authentication and integrity between controllers, devices and host
  • Build key hierarchies, provisioning, device identity and remote attestation
  • Make firmware updates safe end-to-end with signed images and rollback protection
  • Work across bare metal, RTOS and embedded Linux with hardware teams
  • Bring depth of security judgement and system-level experience with real systems

Lab profile

About Fractile

Reinventing AI hardware to make frontier model inference faster at scale.

What they build

  • AI inference chips
  • AI compute systems

Known for

  • High-speed AI inference
  • Custom silicon design
  • Full-stack hardware systems

Key facts

  • Founded in 2022
More about Fractile →
Apply on the lab’s site ↗

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