1 to 25 of 47 Performance Engineer Jobs in London

Senior 5G RAN Performance Engineer London or Bristol (Hybrid) | 12 Months | Inside IR35 Our client, a leading telecommunications organisation is looking for an experienced Senior 5G RAN Performance Engineer to support a major mobile network programme. This role will focus on the performance and optimisation … networks, with particular emphasis on 5G SA, VoNR, KPI analysis, OSS platforms and network performance improvement . Key Responsibilities Analyse and optimise 5G network performance across live network environments. Monitor and improve accessibility, retainability, mobility, integrity and throughput KPIs. Investigate performance trends and identify optimisation opportunities. Support ...

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. ...

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 ...

a.dialogApplyBtn { display: none; } Performance Test Engineer Date: 24 Sept 2026 Company: QualityAI Country/Region: GB Performance Test EngineerLocation: London or Leeds, UK (Hybrid)Type: PermanentSalary Band : Grade B2Role OverviewWe are looking for a Performance Test Engineer to drive performance assurance across cloud, hybrid … premise environments. You will design and execute performance, load, stress, and volume tests, identify bottlenecks, and work closely with development and architecture teams to ensure scalable, resilient, and high-performing applications. Key ResponsibilitiesDesign and execute performance testing strategies and test plans. Perform load, stress, endurance, and volume testing. ...

Date: 24 Sept 2026 Company: QualityAI Country/Region: GB Performance Test Engineer Location: London or Leeds, UK (Hybrid) Type: Permanent Salary Band : Grade B2 Role Overview We are looking for a Performance Test Engineer to drive performance assurance across cloud, hybrid, and on-premise … environments. You will design and execute performance, load, stress, and volume tests, identify bottlenecks, and work closely with development and architecture teams to ensure scalable, resilient, and high-performing applications. Key Responsibilities Design and execute performance testing strategies and test plans. Perform load, stress, endurance, and volume testing. ...

Capital on Tap is hiring its first dedicated Database Performance Engineer to own performance and scale of our SQL Server estate on Azure, ensuring fast paths stay fast as volume grows. You’ll join a small, agile team of DBAs and SREs, focusing on latency, cost … reliability rather than ticket queues. You’ll optimize queries, enable horizontal scaling, and build self-serve tooling for developers to diagnose performance issues, while championing HA/DR and infrastructure as code across the #J-18808-Ljbffr ...

Capital on Tap is seeking a Database Performance Engineer to own performance and scale for our SQL Server estate on Azure. You will work in a small, agile team of DBAs and SREs, focusing on latency, cost and reliability, not ticket queues. You’ll drive cross‐functional ...

Capital on Tap is seeking a Database Performance Engineer to own performance and scale of our SQL Server estate on Azure. You will join a small, senior, hands‐on team of DBAs and SREs to optimize latency, cost and reliability. You'll own performance tuning ...

Cleared Senior Performance Test Engineer | London | Hybrid | Inside IR35 My client is seeking an SC-cleared Senior Performance Test Engineer to join a forward-thinking team. You will bring proven experience in the following areas: Around three years' experience leading performance testing with JMeter Azure … would be useful but not essential) OAT and Functional Test Automation – tools such as Selenium, Playright, Cucumber in an Agile environment Own the Performance Test Engineering for a number of core critical apps Performance Tested end to end architecture using Gatling, Jenkins, CI/CD, Grafana, Prometheus Performance ...

Cleared Senior Performance Test Engineer | London | Hybrid | Inside IR35 My client is seeking an SC-cleared Senior Performance Test Engineer to join a forward-thinking team. You will bring proven experience in the following areas: Around three years’ experience leading performance testing with JMeter Azure … would be useful but not essential) OAT and Functional Test Automation – tools such as Selenium, Playright, Cucumber in an Agile environment Own the Performance Test Engineering for a number of core critical apps Performance Tested end to end architecture using Gatling, Jenkins, CI/CD, Grafana, Prometheus Performance ...

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 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 … 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 ...

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 … 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 ...

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 ...

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 ...

foster an inclusive work environment; we back each other to deliver impact. Make Wayve the experience that defines your career! The roleAs a Vehicle Performance Modelling Engineer you will be responsible for developing vehicle dynamics models and ensure simulations accurately represent real-world performance. This role provides … vehicle models using physics-based and data-driven techniques. Mathematical and Physical Modelling: Create detailed models that represent vehicle and subsystems virtually. Validation and Performance Correlation: Validate models with on-road data and identify and implement correlation improvements. Model Integration and Optimisation: Convert models into efficient, high-quality software ...

Cleared Senior Performance Test Engineer London Hybrid Inside IR35 My client is seeking an SC-cleared Senior Performance Test Engineer to join a forward-thinking team. You will bring proven experience in the following areas: Around three years' experience leading performance testing with JMeter Azure ...

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 ...

QualityAI is seeking a Performance Test Engineer to drive performance assurance for cloud, hybrid, and on-premise environments in London or Leeds. You will design tests, execute load and stress scenarios, and work with dev and architecture teams to ensure scalable and resilient applications. The role emphasizes ...