Member of Technical Staff - Security Engineering
Fractile · London, UK · Bristol, UK
Infrastructureonsite
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
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