Senior Hardware Engineer
Fractile
- Bristol, England, United Kingdom
- Bristol, England, United Kingdom
About
Senior Hardware Engineer Fractile is building silicon, systems and software that will redefine the frontier of AI, enabling the world’s most advanced models at radically higher speed and lower cost. We are expanding fast to meet demand and deliver our product at scale, and we need a Hardware Electronics Design Engineer to design, develop, and validate high‑speed and high‑power electronic systems.
Key Responsibilities
Design and develop high‑speed (PCIe/Ethernet) electronic circuits and systems
Design power delivery networks (PDN) including DC‑DC converters, multi‑phase VRMs, and protection circuits
Create schematics, BOMs, and design documentation for complex PCBs
Lead board‑level architecture decisions including power topology, interface selection, and component choice
Work with PCB layout engineers to ensure proper stack‑ups, routing, and return paths
Address thermal considerations in collaboration with mechanical and thermal teams
Lead board bring‑up, debug, and root‑cause analysis of hardware issues
Use lab equipment (oscilloscopes, network analysers, power analysers) to validate performance
Support compliance, reliability, and environmental testing
Support DFM/DFT reviews and transition designs into manufacturing
Qualifications & Experience
Diploma, Bachelor’s or Master’s degree in Electrical or Electronic Engineering, or equivalent experience
7+ years of experience in hardware electronics design
Proven experience designing high‑speed digital and high‑power circuits
Experience taking designs from concept through production
Technical Skills
High‑speed digital design (DDR, PCIe, Ethernet, SerDes)
Power electronics and PDN design (buck/boost converters, VRMs, protection)
Signal integrity (SI) and power integrity (PI) principles
Schematic capture and PCB tools (Xpedition, Altium, Cadence, or equivalent)
Hardware debug and lab instrumentation
Preferred Experience (Nice To Have)
Experience with multi‑layer high‑speed PCBs (10+ layers)
Familiarity with SI/PI simulation tools
Experience with compliance testing (EMI/EMC, safety)
Experience with AI accelerator or HPC hardware
Thermal Management: knowledge of techniques to manage heat dissipation in high‑power systems
How We Work
Ownership and execution – you will have full agency to drive your work forward
Rapid iteration – we all work directly with top leadership to move from idea to hardware on ambitious timelines
Full‑stack engagement – hardware, software, silicon, and modelling teams all work closely together to create a product with generational impact
Optimistic and pragmatic – we possess the will to win, and to do the hard work to get us there
Team player mentality – the mission is bigger than any of us, and we have the curiosity and technical focus to see the best idea shipped, no matter who’s it is
About Us
Founded in 2022, team of 70+ which is expanding rapidly
Modern, open offices in London and Bristol
Collaborative, problem‑solving culture built on deep curiosity, entrepreneurial initiative and technical fluency
Export Control and Security Clearance Certain roles may involve working on technologies subject to export restrictions. Applicants may be required to undergo additional eligibility checks to ensure compliance with applicable law.
Seniority Level Mid‑Senior level
Employment Type Full‑time
Job Function Engineering and Information Technology
Industries Computer Hardware Manufacturing
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Languages
- English
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