Latest Fractile Jobs

Spotlight

Semiconductor Test Engineering Team Leader

Lead the development and execution of manufacturing test strategies for an advanced AI accelerator chip, overseeing both internal teams and external partners. Drive test architecture, DFT integration, and silicon bring-up across high-speed interfaces like PCIe Gen6 and LPDDR, with a focus on yield, scalability, and advanced packaging. Work closely with cross-functional teams to ensure robust test coverage and successful high-volume manufacturing transfer.

Fractile Bristol, United Kingdom

On-site Permanent

Spotlight

Senior 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

Board Test Engineer

Designs and implements manufacturing test solutions for high-complexity AI accelerator boards, covering ICT, boundary scan, and functional testing. Develops MCU-based test firmware and supports test station deployment at offshore production sites. Focuses on robust, repeatable validation of high-power, high-speed PCBAs with PCIe Gen6 and advanced power delivery.

Fractile Bristol, United Kingdom

On-site Permanent Clearance Required

Hardware System Test Engineer

This role involves developing and maintaining system-level hardware defect detection tests for AI accelerator servers, focusing on identifying manufacturing and field issues such as PCIe faults, cooling problems, and interconnect failures. The engineer will create fast, deterministic diagnostic tests used in factory and service environments, working closely with hardware, software, and manufacturing teams to ensure reliability. The position emphasizes root-cause analysis, test coverage improvement, and integration of diagnostics into production systems.

Fractile Bristol, United Kingdom

On-site Permanent

Thermo Mechanical Engineer

Design and lead the development of advanced cooling systems for high-density AI accelerator hardware, integrating Direct-to-Chip liquid cooling and rack-level thermal management. Collaborate with cross-functional teams and external suppliers to model, test, and validate thermal performance across chip, chassis, and data centre environments. Drive design from concept through production with a focus on reliability, manufacturability, and real-world deployment.

Fractile Bristol, United Kingdom

Senior Silicon Substrate & Packaging Manufacturing Engineer

This role focuses on driving the manufacturing execution of advanced silicon substrates and packaging in Taiwan, ensuring high yield and rapid ramp from early validation to high-volume production. The engineer will lead problem-solving with OSATs and substrate suppliers, establish scalable manufacturing processes, and ensure reliability under demanding AI workloads. Success hinges on deep technical ownership, data-driven quality control, and building robust, scalable supply chain partnerships.

Fractile United Kingdom

On-site Permanent Clearance Required

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

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 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

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

PCBA Product Engineer – AI Hardware

This role involves driving the industrialisation of high-performance AI accelerator PCBAs from prototype to mass production, with a focus on manufacturability, yield optimisation, and close collaboration with manufacturing partners in Taiwan. The engineer will lead DFM/DFA/DFT reviews, support board bring-up, and ensure robust production processes for complex, high-density boards. Success is measured by smooth NPI transitions, high first-pass yield, and scalable manufacturing systems.

Fractile United Kingdom