22 of 22 Performance Engineer Jobs in London

Description Performance Test Engineer - SC Cleared \n Location: Leeds or London (Hybrid) - 50% onsite \n We're partnering with a highly respected UK organisation undergoing a significant technology transformation and are looking for a Performance Test Engineer to help ensure the scalability, resilience, and reliability … critical digital platforms. \n This is an opportunity to join a collaborative technology function where you'll shape performance testing strategy, influence engineering best practices, and work across cloud, hybrid, and on-premise environments. \n As a Performance Test Engineer, you'll be responsible for designing, executing ...

Performance Test Engineer 450/day Inside IR35 Primarily Remote Occasional Travel to London Until 31st March 2027 ASAP Start We're looking for an experienced Performance Test Engineer to join a large-scale enterprise transformation programme, helping to ensure the 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, load, stress ...

Performance Test Engineer £450/day | Inside IR35 | Primarily Remote | Occasional Travel to London | Until 31st March 2027 | ASAP Start We're looking for an experienced Performance Test Engineer to join a large-scale enterprise transformation programme, helping to ensure the 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, load, stress ...

help us deliver on our ambition – which is to help you achieve yours. Herbert Smith Freehills Kramer: Your goals. Our ambition The Opportunity The Performance & Observability Engineer plays a critical role in ensuring system reliability, scalability, and visibility across the entire technology stack. This role focuses on transitioning … from traditional monitoring to full observability, enabling deep performance insights, real-time issue detection, and proactive optimisation. The ideal candidate will have expertise in performance engineering, distributed tracing, logging, metrics, and automation, driving improvements across cloud, infrastructure, and application layers. Primary Responsibilities Performance Engineering & Optimisation Analyse application ...

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 ...

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 ...

Hays are now looking for a Quality Engineer/Performance Tester for one of our local clients: £310 p/d Inside IR35 3 days p/w in the office, 2 WFH Location is one of either London, Manchester or Leicester We're looking for strong experience … performance and non-functional testing to support the delivery of large-scale digital services. The role will focus on ensuring applications are scalable, reliable and performant through a combination of performance testing, API testing and quality engineering practices. What you'll be doing Design, develop and execute performance ...

Herbert Smith Freehills Kramer in London is seeking a Performance & Observability Engineer to drive reliability across the technology stack. You will move from basic monitoring to full observability, delivering real-time performance insights and proactive optimisation for complex legal applications. Working with SRE and DevOps teams ...

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 ...

Akamai Technologies GmbH is looking for a Principal Software Engineer to join their Compute division's Platform Engineering Team in Greater London. In this role, you will analyze system performance, design scalable software solutions, and train team members. The ideal candidate will have over 10 years of experience ...

leading digital transformation consulting firm in the United Kingdom seeks an experienced Senior KDB+ Developer to design and optimize high-performance data platforms. The role necessitates over 8 years of kdb+ expertise, knowledge in q language, and proficiency in performance tuning. Candidates should be comfortable mentoring others ...

United States Digital Space LLC in London seeks an experienced Senior KDB+ Developer to design, build, and optimize high-performance data platforms based on kdb+. You will work closely with Risk teams to deliver scalable, reliable solutions and mentor junior developers. You will own kdb+ tick architectures, tune queries ...

Role: Software Engineer (C++/Python) Client: Performance Software Scale Up Compensation: up to £400,000 P/A + Bonus (DOE) Location: London - United Kingdom Overview My client are seeking a talented engineer to join their existing team of elite software engineers and help to build … their next generation performance software platform. The existing team consists of some of the brightest minds hailing from a range of backgrounds (Big tech, Start-ups, Quant Funds etc), all striving to build the next generation of performance technology. This is an extremely tech focussed organisation ...

title: Network Performance/QA Validation/Network Test Engineer Client: Telco Salary: £50,000-£60,000 + Bonus Location: London Skills: Network Testing, QA, Network Validation, IMS, Packet Switching, CS, Telco Network Protocols The role: My client are seeking a Network Performance/Network Test/… Validation Engineer to join their team. Offices are Central London based, with expectations being 3 days a week in the office and 2 from home. You will need to have a valid driving license. There will be limited travel required with the position, likely once a month to parts ...

Scale Factory is seeking a Security Cleared Performance Test Engineering Consultant to join on a contract basis. Remote work with occasional travel to London, initial 6 months, starting August 2026. You will design and execute performance test strategies across cloud-based, distributed systems and partner with clients ...

start-ups across industries, and partner with leading global research organizations and universities to solve problems. Jump is looking to add a dynamic software engineer to one of our growing quantitative trading teams. The individual in this role will work hand in hand with traders and technologists to take … Python and Linux. Some experience with C++/SQL preferable. Strong debugging skills in both code development and systems infrastructure. Good instincts for performance vs simplicity trade-offs. Ability to make the right engineering decisions to achieve maintainability, extensibility and debuggability. Self-directed, excited to take ownership of projects ...

London is seeking a Software Engineer to join the Cumberland Systematic team, focusing on high-performance trading systems written in C++ and Python. You will help design, build, test and maintain the full stack needed for a global trading operation. You will work with quantitative researchers and traders ...

seeking a Software Engineer to join its London/A msterdam team. You will work closely with traders and researchers to deliver high-performance trading software. You will own the full development lifecycle from gathering requirements to production deployment. The role emphasizes fast iterations, reliability and optimization ...