Senior AI-HPC System Architect

Fractile; West of England; On-site; GBP 90,000 - 130,000; Full time

Job summary

Fractile is building silicon, systems and software to redefine AI performance and cost. We seek a Senior System Architect to define end-to-end hardware architecture, from chip interfaces to board design and system testing.

You will work across hardware, firmware and software, bridging teams and mentoring engineers to ensure architectural coherence and technical excellence. London/Bristol offices with fast iteration and ambitious timelines.

Qualifications

• Proven experience as a Systems Architect, SoC Architect, or similar role in semiconductor or HPC domains.
• Deep understanding of system-level design, including power, thermal, I/O, memory, and interconnect architectures.
• Strong grasp of digital design flows.
• Experience taking complex hardware systems from concept through to mass production.
• Demonstrated ability to define and manage system requirements and trade-offs.
• Comfortable working across hardware, firmware, and software disciplines.
• Excellent communicator who can bridge technical depth with practical execution.

Responsibilities

• Define and own the system architecture roadmap, balancing performance, power, and scalability.
• Contribute to system-level design from concept through production, coordinating with chip design, mechanical, and manufacturing teams.
• Specify system interfaces, power delivery networks, interconnects, and control subsystems.
• Guide board and platform design for early bring-up and validation.
• Partner with the software and firmware leads to ensure seamless integration and coherent system-level performance.
• Evaluate emerging technologies and components to inform architectural decisions.
• Act as a technical mentor, raising the bar for design discipline and documentation across the team.
• Represent system architecture in technical reviews, partner discussions, and customer engagements.

Skills

Systems architecture

SoC architecture

Power & thermal design

Digital design flows

Interconnects & IO

Cross-functional collaboration

Tools

SystemC

MATLAB

Job description

Fractile is building silicon, systems and software to redefine AI performance and cost. We seek a Senior System Architect to define end-to-end hardware architecture, from chip interfaces to board design and system testing.

You will work across hardware, firmware and software, bridging teams and mentoring engineers to ensure architectural coherence and technical excellence. London/Bristol offices with fast iteration and ambitious timelines.