1 to 25 of 34 Performance Engineer Jobs in London

Role: RAN Performance Engineer Location: Any Core site - London, Bristol, Birmingham, Manchester, Ipswich, Glasgow. Duration: Initial 6 Month Contract Day Rate: Up to £420 per Inside IR35 The Role We are looking for an experienced RAN Performance Engineer to support the performance of a leading … mobile network. This role is focused on identifying network performance issues, investigating the root cause, raising incidents, and working with operational teams to restore service and improve customer experience. You will analyse network KPIs from high-level regional views down to individual cell performance, helping to ensure ...

# Lead Performance Test Engineer Apply now## **About the job you're considering**We are seeking a Lead Performance Engineer to lead a team of performance engineers delivering assurance across complex client programmes. You will set the performance strategy, define and agree non-functional … quality gates, and ensure systems are scalable, resilient and ready for production.Working with engineering, architecture, DevOps, SRE, cloud and business teams, you will embed performance engineering throughout the delivery lifecycle**Hybrid working**: The places that you work from day to day will vary according to your role, your needs ...

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 ...

Performance Test Engineer - Outside IR35 - 6 month initial contract - London/hybrid - up to £525 per day We're looking for an experienced Performance Test Engineer to lead and deliver end-to-end performance testing for a modern web platform built on a microservices architecture. … responsibilities: Define and implement the performance testing strategy. Design and execute load, stress, endurance, and capacity tests. Develop and maintain test scripts using JMeter or similar tools. Identify and analyse performance bottlenecks across applications and services. Work closely with Development, QA, and DevOps teams to resolve issues ...

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. … This role acts as the performance authority , accountable for defining strategy, leading delivery, and providing formal recommendations on production readiness. Key Responsibilities Own the performance testing strategy for assigned services or programmes Lead volumetric analysis, performance risk assessment, and test scoping Define entry/exit criteria, success ...

Linux Performance Engineer – Quant TradingIndustry-leading compensationQuant Capital is urgently looking for a Linux Engineer to join our high profile client. Our client is a very well-known and highly regarded quantitative trading firm, liquidity provider and market maker. They operate globally and are considered ...

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-sensitive trading workloads.• Build ...

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 roleAs 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 team … kernel execution, memory movement) and deliver measurable improvements.Implement and validate optimisations in compilers, runtimes, and/or kernels (e.g. operator fusion, scheduling, quantisation-aware performance, custom kernels).Build robust benchmarking and regression testing to ensure performance improvements hold across models, devices, and software releases.Optimise for multiple targets (e.g. ...

inclusive work environment; we back each other to deliver impact. Make Wayve the experience that defines your career! The roleAs 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 team … stage, 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.Build ...

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 ...

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 ...

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 ...

designing systems that scale, accelerate discovery and support innovation across the firm.Take the next step in your career.The roleWe 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 and 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 and develop reference ...

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 ...

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 ...

quietly contributes to how long a workload takes to become useful and how fast it runs once it is. We're hiring a Performance Engineer to own that surface for Verda's container and serverless GPU platforms. You'll characterize where time and throughput actually go across … Linux storage and container runtime internals. Hands-on experience with at least one distributed or network filesystem and with S3-compatible object storage - including performance-killing cases (small-object overhead, range-request patterns, eventual consistency, multipart tuning). Comfort with model-serving runtimes (vLLM, SGLang etc) and the formats ...

that make building complex device software feel as simple as building a webpage - starting with SourceFS. The Core Product: SourceFS SourceFS is a high-performance virtual filesystem designed to turn multi-hour workflows into minutes. 10x Faster Builds: Intelligent caching and virtualization that only materializes files when they … problems in the best possible way." The Role: Pushing the Speed Limits of Rust, Linux & I/O We are looking for a Performance/Systems Engineer to join us at Source.dev. In this role, your primary metric of success is speed. You will dissect execution paths, eliminate ...

Google is hiring a Software Engineer III for Performance in London. This onsite role focuses on managing a portfolio of clients, deeply understanding their business challenges and marketing objectives, and delivering high-impact advertising solutions. You will collaborate with Google teams to optimize campaigns and drive customer success ...

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 ...

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 ...