Fractile
55 open UK roles - Bristol, London / Bristol, London, London or Bristol - listings direct from the employer
Fractile designs and manufactures AI accelerator chips and systems optimized for fast inference - generating AI outputs at thousands of tokens per second. The company hires engineers across hardware (chip design, board testing), compilers, and developer experience to build this full-stack system.
DRAM Product Engineer
2mo agoDevelop and execute test strategies for DRAM devices and their interconnects, covering functional, timing, signal integrity, and reliability failure modes. · Diagnose complex DRAM issues across logical, architectural,...
BristolEngineering Manager - Compilers
3mo agoProven track record of leadership experience managing a high-performance development team and delivering consistently outstanding outcomes. · Proven experience in compiler development, with experience of machine...
London / BristolDeveloper Experience / DevEx
3mo agoExperience with inference frameworks such as JAX and/or PyTorch · Experience of software development in Python, Rust, C/C++, or a similar language · Experience monitoring and optimising code written in CUDA, ROCm,...
LondonMember of Technical Staff - Security Engineering
3mo agoShape the security of the control chain (device, board, chassis, and rack controllers): threat models, trust boundaries, and a coherent secure-by-design approach across all platforms · Design and help build secure boot...
London / BristolEmbedded & Low-Level Software Engineer - Early Career
3mo agoWrite and debug the Linux kernel driver (in Rust!) for our PCIe-attached accelerator: PCIe, DMA, interrupts and memory · Write and optimise ML inference kernels in a high-level language and in assembly for RISC-V and...
London or BristolDeveloper Experience / DevEx
4mo agoExperience with inference frameworks such as JAX and/or PyTorch · Experience of software development in Python, Rust, C/C++, or a similar language · Experience monitoring and optimising code written in CUDA, ROCm,...
BristolSilicon Infrastructure Engineer
4mo agoCreate and support Python tooling and silicon verification and physical design workflows centred around silicon EDA tooling, which will require coding and build-system knowledge to assist with tasks faced by different...
LondonSemiconductor Product Engineering Team Leader
4mo agoDrive the manufacturing test strategy for an AI accelerator chip featuring PCIe Gen6, LPDDR, advanced CMOS nodes, and advanced packaging (e.g., 2.5D/3D, chiplet). · Lead and manage a team of chip product engineers...
BristolSemiconductor Test Engineer
4mo agoDevelop and maintain ATE test programs for an AI accelerator chip targeting high-volume manufacturing. · Implement manufacturing test content for advanced CMOS designs including high-speed logic, SRAM, DRAM, and high...
BristolManufacturing Operations Technical Programme Manager – Silicon and Packaging
5mo agoOwn the end-to-end project plan from wafer production through packaged silicon delivery · Coordinate day-to-day activity with foundry, OSAT, packaging, logistics, and contract manufacturing partners. · Track milestones...
BristolSenior Verification Engineer
5mo agoSoftware mindset for solving hardware problems · The desire to be in a high impact role in a small team · A disrupter of the “status quo” of hardware development
LondonSenior Verification Engineer
5mo agoSoftware mindset for solving hardware problems · The desire to be in a high impact role in a small team · A disrupter of the “status quo” of hardware development
BristolSenior Logical Design Engineer
5mo agoDevelop and maintain RTL specifications for digital designs, ensuring clarity and accuracy. · Implement complex design modules with a focus on performance, power, and area efficiency. · Take ownership of design tasks,...
LondonSenior Logical Design Engineer
5mo agoDevelop and maintain RTL specifications for digital designs, ensuring clarity and accuracy. · Implement complex design modules with a focus on performance, power, and area efficiency. · Take ownership of design tasks,...
BristolVerification Engineer
5mo agoSoftware mindset for solving hardware problems · The desire to be in a high impact role in a small team · A disrupter of the “status quo” of hardware development
BristolVerification Engineer
5mo agoSoftware mindset for solving hardware problems · The desire to be in a high impact role in a scaling team · A disrupter of the “status quo” of hardware development
LondonLead Physical Design Engineer
5mo agoDrive the physical implementation of ASIC/SoC designs, including floorplanning, placement, clock tree synthesis (CTS), routing, and sign-off, with potential responsibility for full-chip execution. · Work on synthesis,...
LondonLead Physical Design Engineer
5mo agoDrive the physical implementation of ASIC/SoC designs, including floorplanning, placement, clock tree synthesis (CTS), routing, and sign-off. · Lead or contribute to full-chip execution, block ownership, team...
BristolPhysical Design Engineer
5mo agoSupport the physical implementation of ASIC/SoC designs, including floor planning, placement, clock tree synthesis (CTS), routing, and sign-off. · Work on synthesis, timing analysis (STA), and optimisation to achieve...
LondonPhysical Design Engineer
5mo agoSupport the physical implementation of ASIC/SoC designs, including floor planning, placement, clock tree synthesis (CTS), routing, and sign-off. · Work on synthesis, timing analysis (STA), and optimisation to achieve...
BristolLead/Principal DFT Engineer
5mo agoOwn and define the DFT architecture for a large AI accelerator SoC (scan, compression, MBIST, LBIST, boundary scan) · Set DFT strategy, methodology, flow and signoff criteria · Drive integration of DFT tools and flows...
BristolDFT Engineer
6mo agoContribute to the DFT architecture of a multi-core AI accelerator SoC · Drive integration of DFT tools into the EDA flow · Implement scan insertion, compression, and test logic
BristolSenior System Architect
6mo agoDefine 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...
LondonSenior System Architect
6mo agoDefine 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...
BristolSenior Processor Architect
7mo agoDefine and own the compute engine architecture specifications, balancing performance, flexibility, power, area, and design complexity. · Lead architectural exploration from early concept through to specification,...
LondonSenior Processor Architect
7mo agoDefine and own the compute engine architecture specifications, balancing performance, flexibility, power, area, and design complexity. · Lead architectural exploration from early concept through to specification,...
BristolRust Software Engineer
9mo agoStrong Rust skills - or senior-level experience in a systems language (C, C++) with demonstrable Rust proficiency via open source or personal projects · Experience serving AI workloads (e.g. vLLM, SGLang, or Rust...
LondonRust Software Engineer
9mo agoStrong Rust skills - or senior-level experience in a systems language (C, C++) with demonstrable Rust proficiency via open source or personal projects · Experience serving AI workloads (e.g. vLLM, SGLang, or Rust...
BristolSenior/Principal Physical Design Engineer
9mo agoDrive the physical implementation of ASIC/SoC designs, including floorplanning, placement, clock tree synthesis (CTS), routing, and sign-off, with potential responsibility for full-chip execution. · Work on synthesis,...
LondonLogical Design Engineer
9mo agoDevelop and maintain RTL specifications for digital designs, ensuring clarity and accuracy. · Implement complex design modules with a focus on performance, power, and area efficiency.
BristolLogical Design Engineer
9mo agoDevelop and maintain RTL specifications for digital designs, ensuring clarity and accuracy. · Implement complex design modules with a focus on performance, power, and area efficiency.
LondonHardware System Test Engineering Team Leader
10mo agoDefine the system-level test strategy for an AI accelerator server platform with hundreds of PCIe Gen6 links, liquid cooling, and heterogeneous compute/management subsystems. · Lead the design and implementation of...
BristolHardware System Test Engineer
10mo agoDevelop and maintain system-level hardware defect detection tests for individual servers and rack-based systems. · Implement tests to detect assembly defects, marginal components, damaged hardware, cabling or...
BristolSemiconductor Test Engineering Team Leader
10mo agoDrive the manufacturing test strategy for an AI accelerator chip featuring PCIe Gen6, LPDDR, advanced CMOS nodes, and advanced packaging (e.g., 2.5D/3D, chiplet). · Lead and manage a team of chip test engineers...
BristolSemiconductor Product Engineer
10mo agoDefine and develop test methods and strategies for an AI accelerator chip targeting high-volume manufacturing. · Plan and manage manufacturing test content for advanced CMOS designs including high-speed logic, SRAM,...
BristolBoard Test Engineer
10mo agoDevelop and maintain board/PCBA manufacturing test content for complex, high-power, high-speed boards. · Implement and debug test coverage across ICT, boundary scan/JTAG, and functional test stages. · Design and support...
BristolThermo Mechanical Engineer
10mo agoLead the design and specification of an advanced cooling solution for dense AI hardware systems · Work closely with 3rd-party suppliers to define thermal and mechanical requirements and review proposed solutions ·...
BristolSenior PCB Layout Engineer
10mo agoCreate PCB layouts for complex, multi-layer boards supporting high-speed digital and high-power circuits · Own component placement, routing, and constraint implementation from concept through manufacturing release ·...
BristolSenior Embedded Performance Engineer
10mo agoWrite and optimise performance-critical ML kernels in C, with assembly where it matters (RISC-V and our own ISA) · Build the low-level control paths that feed those kernels, including scheduling, synchronisation, and...
BristolSenior Embedded Performance Engineer
10mo agoWrite and optimise performance-critical ML kernels in C, with assembly where it matters (RISC-V and our own ISA) · Build the low-level control paths that feed those kernels, including scheduling, synchronisation, and...
London / BristolSenior Linux Kernel Driver Engineer
10mo agoDesign, develop, and maintain the Linux kernel driver for Fractile’s AI accelerator · Build the performance-critical kernel-space paths that keep the host stack moving: PCIe device management, DMA, memory handling,...
BristolSenior Linux Kernel Driver Engineer
10mo agoDesign, develop, and maintain the Linux kernel driver for Fractile’s AI accelerator · Build the performance-critical kernel-space paths that keep the host stack moving: PCIe device management, DMA, memory handling,...
London / BristolSenior Systems Software Engineer
10mo agoDevelop firmware and services for management controllers at every level: rack management, BMC, and board/device controllers (RTOS and bare metal) · Build systems software for board and rack management, from early...
BristolSenior Systems Software Engineer
10mo agoDevelop firmware and services for management controllers at every level: rack management, BMC, and board/device controllers (RTOS and bare metal) · Build systems software for board and rack management, from early...
London / BristolSenior Simulation Engineer
10mo agoBuild a functional simulator of Fractile’s AI accelerator hardware including a custom ISA · Implement the device models and behaviours that matter for software correctness: MMIO, interrupts, DMA, memory behaviour,...
LondonDeveloper Operations / DevOps — Bazel Monorepo
10mo ago5+ years in software or infrastructure engineering · 3+ years working with build systems · Strong hands-on experience with Bazel
LondonML Runtime Engineer
10mo agoSolid experience with ML inference at scale, including multi-user serving · Deep understanding of paged attention and inference engines such as vLLM · Familiarity with key components of the ML software ecosystem
BristolModelling Engineer
10mo agoExperience in pre-silicon modelling of complex semiconductor IP · SystemC or equivalent modelling frameworks · C++ for high-performance simulation
LondonSenior ML Compiler Engineer
10mo agoDevelop the machine learning compiler stack for Fractile’s innovative AI acceleration hardware · Enable industry-leading performance of the latest LLMs on Fractile’s accelerators · Work with hardware, driver runtime,...
BristolSenior Simulation Engineer
11mo agoBuild a functional simulator of Fractile’s AI accelerator hardware including a custom ISA · Implement the device models and behaviours that matter for software correctness: MMIO, interrupts, DMA, memory behaviour,...
BristolML Runtime Engineer
12mo agoSolid experience with ML inference at scale, including multi-user serving · Deep understanding of paged attention and inference engines such as vLLM · Familiarity with key components of the ML software ecosystem
LondonSenior ML Compiler Engineer
12mo agoDevelop the machine learning compiler stack for Fractile’s innovative AI acceleration hardware · Enable industry-leading performance of the latest LLMs on Fractile’s accelerators · Work with hardware, driver runtime,...
London / BristolModelling Engineer
12mo agoExperience in pre-silicon modelling of complex semiconductor IP · SystemC or equivalent modelling frameworks · C++ for high-performance simulation
BristolDeveloper Operations / DevOps — Bazel Monorepo
19mo ago5+ years in software or infrastructure engineering · 3+ years working with build systems · Strong hands-on experience with Bazel
BristolSenior/Principal Physical Design Engineer
20mo agoDrive the physical implementation of ASIC/SoC designs, including floorplanning, placement, clock tree synthesis (CTS), routing, and sign-off, with potential responsibility for full-chip execution. · Work on synthesis,...
Bristol
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