Latest Fractile Jobs

Manufacturing Operations Technical Programme Manager – Silicon and Packaging

This role involves managing the end-to-end technical programme for silicon production and packaging, from wafer fabrication through to packaged delivery. The person will coordinate across foundries, OSATs, internal teams, and contract manufacturers, ensuring technical milestones, schedules, and risks are tightly managed. They will also help shape scalable programme management practices within a fast-growing hardware and AI startup environment.

Fractile Bristol, United Kingdom

On-site Permanent

Semiconductor Product Engineering Team Leader

Leads semiconductor product engineering for AI accelerator chips, driving test strategy from DFT through high-volume manufacturing. Oversees internal teams and external partners to ensure silicon readiness, yield optimization, and robust test coverage across advanced CMOS and packaging technologies. Focuses on PCIe Gen6, LPDDR, and high-speed IO interfaces in a full-stack hardware-software environment.

Fractile Bristol, United Kingdom

On-site Permanent

Silicon Infrastructure Engineer

This role involves developing and maintaining infrastructure tooling for silicon design, focusing on EDA workflows, build systems, and compute environments. The engineer will create cacheable, reproducible workflows, support EDA tools across the chip lifecycle, and manage cloud or on-premise infrastructure using IaC. Work includes deployment, monitoring, and optimisation of high-performance computing systems used by silicon engineering teams.

Fractile London, United Kingdom

Hybrid Permanent Clearance Required

Semiconductor Product Engineer

This role involves developing, deploying, and maintaining ATE test programs for high-volume manufacturing of AI accelerator chips. Responsibilities include defining test strategies, debugging complex silicon issues, and optimizing yield and test cost, working closely with UK-based teams.

Fractile United Kingdom

Lead RTL Designer (PPA Experience)

Lead RTL Designer responsible for driving PPA-optimized datapath design in high-performance AI accelerator chips. The role involves deep microarchitectural trade-off analysis, timing-closure iteration, and close collaboration with physical design and verification teams. Work spans from RTL creation to synthesis and STA feedback, targeting cutting-edge inference hardware for large-scale AI models.

Fractile United Kingdom

Senior/Principal Physical Design Engineer

This role involves end-to-end physical implementation of advanced ASIC/SoC designs for AI accelerators, including floorplanning, placement, clock tree synthesis, routing, and sign-off. The engineer will optimise for performance, power, and area (PPA) using industry-standard EDA tools and collaborate closely with RTL, architecture, and process technology teams. Focus areas include timing closure, low-power design, and manufacturability for cutting-edge nodes like 7nm and below.

Fractile London, United Kingdom

On-site Permanent

Senior/Principal Physical Design Engineer

This role involves leading the physical implementation of advanced ASIC/SoC designs for AI accelerators, from synthesis through to sign-off. The engineer will focus on optimizing performance, power, and area using state-of-the-art EDA tools and deep expertise in low-power design and timing closure. Collaboration with RTL, DFT, and process teams is key to ensuring design integrity and manufacturability at advanced nodes.

Fractile Bristol, United Kingdom

On-site Permanent

Processor Architect

This role involves defining and driving the architecture of high-performance compute engines for AI acceleration, from ISA and execution units to memory hierarchies and on-chip interconnects. The architect will lead exploration, create performance models, and work closely with design and verification teams to ensure real-world performance and efficiency. Close collaboration with software and system teams ensures the silicon delivers practical application gains, not just theoretical benchmarks.

Fractile Bristol, United Kingdom

Processor Architect

This role involves defining and driving the architecture of high-performance compute engines for AI acceleration, including ISA design, memory hierarchies, and on-chip interconnects. The architect will work closely with design, verification, and software teams to translate architectural vision into real-world silicon, using performance modelling and data-driven analysis. It's a hands-on position requiring deep expertise in processor design and cross-disciplinary collaboration to deliver cutting-edge AI hardware.

Fractile London, United Kingdom

Senior Embedded Performance Engineer

This role involves developing and optimizing low-level runtime software for a next-generation AI inference chip, focusing on performance-critical ML kernels in C and assembly. The engineer will drive early silicon evaluation, create microbenchmarks, and collaborate closely with hardware, compiler, and simulation teams to deliver measurable performance gains. Work spans from firmware-level control paths to profiling and regression tracking in a tightly integrated hardware-software environment.

Fractile London, United Kingdom

Senior Linux Kernel Driver Engineer

Design and develop high-performance Linux kernel drivers for an AI inference accelerator, focusing on PCIe, DMA, memory management, and interrupt handling. Work closely with hardware, firmware, and ML teams in a co-design environment from pre-silicon through performance optimization. Build robust, low-latency kernel-space paths and stable userspace interfaces critical to system throughput and latency.

Fractile London, United Kingdom

Senior Verification Engineer

The role involves leading pre-silicon RTL verification for AI-focused integrated circuits, developing testbenches, creating functional models, and ensuring high functional quality of RTL releases. The engineer will collaborate closely with hardware, software, and architecture teams, applying software-driven methodologies to improve verification workflows. Work includes coverage closure, assertion-based checking, and contributing to architectural discussions in a fast-paced, full-stack environment.

Fractile Bristol, United Kingdom

On-site Permanent Clearance Required

Senior Verification Engineer

This role involves leading pre-silicon RTL verification for AI-focused integrated circuits, developing testbenches, functional models, and coverage strategies to ensure high-quality tape-outs. The engineer will collaborate closely with RTL design, system architecture, and software teams in a fast-paced, full-stack environment. Emphasis is placed on improving verification methodologies, leveraging software-driven approaches, and contributing to architectural discussions in a highly collaborative, technically rigorous team.

Fractile London, United Kingdom

On-site Permanent Clearance Required

Verification Engineer

Work as a Silicon Verification Engineer on AI-focused IC development, verifying RTL for data centre-scale ML/AI chips. Collaborate across hardware and software teams to build high-quality silicon using modern methodologies including Cocotb and Bazel. Engage in specification, architecture, and verification planning in a fast-paced, full-stack environment.

Fractile London, United Kingdom

On-site Permanent

Verification Engineer

The role involves verifying AI-focused silicon designs using advanced hardware and software workflows. You'll collaborate across teams to develop high-performance ML/AI ICs, contribute to architectural discussions, and build robust testbenches and verification environments. The position emphasizes innovation in verification methodologies and close integration between hardware and software development.

Fractile Bristol, United Kingdom

On-site Permanent