EngineeringOn-siteSenior

Senior Embedded Performance Engineer

Fractile · Bristol and London

Fractile builds AI inference chips and systems designed to generate output at thousands of tokens per second. This London role writes the on-device runtime and ML kernels that sit closest to the silicon, leads the first compute runs on real hardware and feeds benchmark results back into the chip, compiler and system roadmap.

Apply on Fractile

Company: Fractile
Where: Bristol and London
Function: Engineering
Posted: 1 week ago
Seniority: Senior
Work mode: On-site
Categories: AI & ML DeepTech SaaS

The role

What you’ll do

Write and tune performance-critical ML kernels in C, using RISC-V or in-house assembly where needed
Build the scheduling, synchronisation and data-movement paths that feed those kernels
Create microbenchmarks and validation workloads that keep simulation and hardware in step
Profile, benchmark and track regressions, turning the data into architecture feedback

What you’ll need

Proven experience in deeply embedded software
Excellent C and comfort writing and debugging optimised assembly, ideally RISC-V
Strong grasp of low-level architecture, memory behaviour and where cycles are spent
Degree in CS, electronic engineering, maths, physics or similar, plus 3+ years in industry

Good to know: Based in London. Meaningful equity, private medical, dental and vision cover, and 25 days' holiday plus bank holidays. Some roles may need export control eligibility checks.