1 to 25 of 34 Performance Engineer Jobs in London

Lead Performance Test Engineer ( SC Eligible/SC Cleared ) London, United Kingdom | Posted on 01/09/2026 Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over … commitment to user-centred design and agile delivery, and more to deliver innovative digital services that matter. Role Overview We are seeking a Lead Performance Tester/Performance Engineering Lead to provide end-to-end ownership of performance testing and performance assurance across complex digital services. ...

Performance Test Engineer £475/day | Inside IR35 | Primarily Remote | Occasional Travel to London | Until 31st March 2027 | ASAP Start *** MUST have NHS or Gov. Experience *** We're looking for an experienced Performance Test Engineer to join a large-scale enterprise transformation programme, helping to ensure … performance, scalability and operational readiness of critical cloud-based services. You'll work closely with engineering, DevOps and QA teams to design and execute performance testing strategies, analyse system behaviour under load, and provide recommendations to improve application resilience and user experience. Key Responsibilities Design, develop and execute ...

Site Performance Engineer also acts as the local Subject Matter Expert for the CMMS and other systems used to manage maintenance. Reporting to the Senior Planner, the Site Performance Engineer’s duties include supporting the Global Operations team, rolling out new initiatives, supplying reports and KPIs … into controlled Work Orders. Govern project works and asset replacements, aligned with maintenance plans. Drive cross-site coordination with other global site-based Site Performance Engineers and provide support as directed by the Senior Planner. Hold end-to-end accountability for the lifecycle of maintenance work orders, coordinating with ...

it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus. We are seeking a Cloud Performance Engineer to work with technology teams across the firm to build high-performance cloud solutions for trading workloads. You will join the Cloud Performance Team, working alongside cloud engineers, software developers, Linux- and network engineers to optimize performance end to end. The ideal candidate draws on experience in cloud technology, systems engineering, networking and automation. What you will do in this role: Design and implement cloud and hybrid cloud architectures for latency ...

Hamilton Barnes Associates Limited is seeking a Cloud Performance Engineer to design and optimise high-performance cloud infrastructure for latency-sensitive workloads across AWS and hybrid environments. You will collaborate with cross-functional teams spanning cloud, networking, Linux, and automation to push performance and reliability. Ideal ...

inclusive work environment; we back each other to deliver impact. Make Wayve the experience that defines your career! The role As a Staff ML Performance Engineer, you’ll play a key role in high-impact projects, optimising ML inference for edge accelerators and GPUs. The focus of this … high-impact projects at Wayve. Key responsibilities: Identify, implement and validate optimisations in ML compilers, runtimes, and kernels (e.g. operator fusion, scheduling, quantisation‐aware performance, custom kernels) Profile and pinpoint bottlenecks across the full inference stack (model graph, compiler/runtime, kernel execution, memory movement) and deliver measurable improvements. ...

Research is seeking an exceptional NLP Performance Engineer to own large-scale LLM inference performance within our NLP Engineering team at the London HQ. You will profile, optimise and implement techniques to maximise inference throughput and cost-efficiency, collaborating with researchers and infrastructure engineers to shape scalable ...

apply large language models (LLMs) and other Natural Language Processing (NLP) techniques across the firm. We are looking for an exceptional NLP Performance Engineer to join our NLP Engineering team and take ownership of large-scale LLM inference performance. This is a specialist Quantitative Developer role. Like … Quantitative Developers, you will work alongside researchers to bring their ideas to life, with a particular focus on maximising the performance of LLMs. This is a hands‐on, high‐impact role. You will design and implement techniques that improve the performance, cost‐efficiency and capabilities of inference workloads ...

Wayve in London is seeking a Staff ML Performance Engineer to optimize inference for edge accelerators and GPUs, enabling transformer models to run efficiently on low-power devices for Wayve's driving product. You will steer technical direction for production systems, work across ML systems, compilers, runtimes ...

London is seeking a Cloud Performance Engineer to design and optimize latency-sensitive trading workloads in a hybrid cloud. You will work with cloud engineers, software developers, Linux- and network engineers to deliver end-to-end performance improvements. The role emphasizes AWS, IaC with Terraform, Linux, Python ...

Research is seeking an exceptional ML Performance Engineer to optimise large-scale workloads across GPU and CPU infrastructure. You will profile and tune training/inference workloads, develop reference implementations and collaborate with research and platform teams to evolve the compute stack. The role shapes platform evolution ...

Verda is seeking a Performance Engineer to own the end-to-end surface for its container and serverless GPU platforms. You will profile, optimize, and drive improvements across image distribution, startup, and data loading paths to reduce cold-start latency and boost throughput. You will work across storage ...

scale, accelerate discovery and support innovation across the firm. Take the next step in your career. The role We are seeking an exceptional ML Performance Engineer to optimise large-scale workloads across our GPU and CPU infrastructure. This is a hands-on, impactful role. You will design … implement techniques that improve performance and capabilities of research workloads on cutting-edge compute infrastructure, ensuring our researchers and engineers can make the best use of current and future systems. You will work directly with internal research teams and infrastructure engineers to profile and analyse workloads, eliminate bottlenecks ...

real industrial pilots - and we’re growing the team to take it even further. About the Role We're hiring a Neural Network Performance Engineer to join our VLA team based in London. In this role, you will work on all aspects of running capable neural‐network based … Your work will be critical to delivering smooth robot motions while reacting to environment changes as quickly as possible. What You'll Do Analyze performance bottlenecks of a particular model architecture and come up with potential improvements. Make the model run on a new hardware (e.g. NVIDIA Thor) efficiently. ...

Icehouseventures is looking for a Staff ML Performance Engineer to optimize ML inference for edge accelerators and GPUs. You will focus on running large transformer-based models efficiently on low-cost, low-power devices, directing technical projects and ensuring reliable operation in vehicular compute environments. This full-time ...

Scrumconnect Consulting is seeking a Lead Performance Tester/Performance Engineering Lead to own performance testing strategy across complex digital services. You will act as the performance authority, defining strategy, leading delivery, and advising on production readiness. We expect extensive experience in performance testing ...

rely on it. On the device, close to the metal, we write the runtime software that orchestrates work across the chip and runs performance‐critical ML kernels. This is where performance gets real and the wins compound. Your work directly influences trade‐offs for the silicon, system deployment … compiler. You’ll drive the first accelerator compute runs, evaluating performance on silicon, running early benchmarks, and feeding results back into the hardware and software roadmap. What you’ll do Write and optimise performance‐critical ML kernels in C, with assembly where it matters (RISC ...

Chip UK is seeking a Senior QA Engineer specializing in Performance & Scalability to own performance across 30+ microservices and legacy dependencies. You will define pass/fail thresholds, embed performance in delivery plans, and lead performance initiatives beyond gate testing. You’ll design tests, automate ...

Google is seeking a Software Engineer III for Embedded Performance, System Tracing, and Profiling in London. The role is onsite at 1 St Giles High St, London, and is a full-time position. You will work on critical projects that enhance how users connect, explore, and interact with … information at scale, contributing across the full stack. Join a team focused on performance, tracing, and profiling to optimize systems and experiences for billions of users and partners worldwide. #J-18808-Ljbffr ...

Luxoft is seeking a skilled C++ engineer to design and build high-performance, low-latency applications that process large volumes of real-time data. You will optimize from algorithms to networking and OS interaction and collaborate with trading and infrastructure teams. The role focuses on delivering production-quality … code with tests, profiling, and tuning to meet stringent performance goals in a fast-paced environment. #J-18808-Ljbffr ...

hierarchical and one where everyone is valued. We strive for excellence in everything we do. The Role XTX is seeking an experienced engineer to support our ML Performance and AI Acceleration function. You will be working in a small and highly technical team at extremely high … levels of abstraction to dramatically increase the performance of XTX's training and inference platforms. The remit is wide, and you should expect to be challenged. We are not just writing CUDA code. Amongst other things, you will be working on a sophisticated optimising compiler for a variety ...

tech company focusing on AI hardware is seeking an embedded software engineer in London or Bristol to optimize performance-critical ML kernels and develop low-level control paths. The role requires 3+ years of experience in embedded software, strong skills in C and assembly, and a collaborative mindset. … will profile and benchmark for performance improvements, working closely with hardware and software engineers. This position encourages fast-paced development with a focus on maintaining high-quality code. #J-18808-Ljbffr ...

Quant Blueprint LLC is seeking an engineer proficient in low-level systems programming and optimization to enhance our machine learning team. This role centers on optimizing model performance, both for training and real-time inference. Applicants should have experience with modern ML techniques, GPU knowledge, and debugging skills ...

looking for an engineer with experience in low-level systems programming and optimisation to join our growing ML team. Machine learning is a critical pillar of Jane Street's global business. Our ever-evolving trading environment serves as a unique, rapid-feedback platform for ML experimentation, allowing … incorporate new ideas with relatively little friction. Your part here is optimising the performance of our models – both training and inference. We care about efficient large-scale training, low-latency inference in real-time systems and high-throughput inference in research. Part of this is improving straightforward CUDA ...

looking for an engineer with experience in low-level systems programming and optimisation to join our growing ML team. Machine learning is a critical pillar of Jane Street's global business. Our ever-evolving trading environment serves as a unique, rapid-feedback platform for ML experimentation, allowing … incorporate new ideas with relatively little friction. Your part here is optimising the performance of our models – both training and inference. We care about efficient large-scale training, low-latency inference in real-time systems and high-throughput inference in research. Part of this is improving straightforward CUDA ...