14 of 14 Performance Engineer Jobs in London

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 ...

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 ...

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 click apply for full job details ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...