19 of 19 Performance Engineer Jobs in the UK

As a Systems Performance Engineer, within one of our systems engineering teams, you will provide performance prediction and analysis expertise to major defence programmes, developing the latest Complex Weapons capabilities for the UK Armed Forces in response to advanced threats in all domains (Air, Land, Sea). Expect assignments across concept, assessment or demonstration phase contracts, covering … one of the MBDA product lines. System Performance is an essential part of the system design process and a key indicator as to whether the design is suitable. Salary : Circa £43,000 depending on experience Dynamic (hybrid) working : 5 days per week on-site due to workload classification Security Clearance : British Citizen Restrictions and/or limitations relating to … and UK Security Check (SC) clearance, which are managed by the MBDA Personnel Security Team. What we can offer you: Company bonus : Up to £2,500 (based on company performance and will vary year to year) Pension : maximum total (employer and employee) contribution of up to 14% Overtime: opportunity for paid overtime Flexi Leave: Up to 15 additional days More ❯

SQL Performance Engineer - Hybrid (Glasgow or Edinburgh) - Up to £50,000 Are you passionate about optimising high-volume data systems and solving complex performance challenges? We're hiring a Performance Engineer to join a growing tech team working on a cutting-edge financial data platform. This is a hybrid role, with 2 days in the … office (Glasgow or Edinburgh) and 3 days working from home . What You'll Be Doing Tuning and optimising complex SQL queries to improve system performance Building tooling for diagnostics and deployment risk management Automating performance testing and benchmarking across environments Collaborating with Engineering, DevOps, and Product teams to improve throughput and scalability Supporting deployment strategies for high … risk releases Designing and testing new performance features What We're Looking For Proven experience in SQL performance tuning and query optimisation Familiarity with performance testing tools (e.g., JMeter, k6) Experience with observability platforms (e.g., Azure Monitor, Grafana) Strong problem-solving skills and a collaborative mindset Ability to develop and interpret MI for decision-making Bonus Skills More ❯

SQL Performance Engineer - Hybrid (Glasgow or Edinburgh) - Up to £50,000 Are you passionate about optimising high-volume data systems and solving complex performance challenges? We're hiring a Performance Engineer to join a growing tech team working on a cutting-edge financial data platform. This is a hybrid role, with 2 days in the … office (Glasgow or Edinburgh) and 3 days working from home . What You'll Be Doing Tuning and optimising complex SQL queries to improve system performance Building tooling for diagnostics and deployment risk management Automating performance testing and benchmarking across environments Collaborating with Engineering, DevOps, and Product teams to improve throughput and scalability Supporting deployment strategies for high … risk releases Designing and testing new performance features What We're Looking For Proven experience in SQL performance tuning and query optimisation Familiarity with performance testing tools (e.g., JMeter, k6) Experience with observability platforms (e.g., Azure Monitor, Grafana) Strong problem-solving skills and a collaborative mindset Ability to develop and interpret MI for decision-making Bonus Skills More ❯

Product Performance & Test Engineer, Laboratory Lead, COR7366 A rare and exciting opportunity has arisen for a Product Performance & Test Engineer/Laboratory Lead, to join a UK-based R&D and manufacturing organisation driving innovation in sustainable appliance design. The Role The Product Performance & Test Engineer will lead the setup and operation of a … small-scale in-house testing facility. You'll take responsibility for designing test methods, analysing performance data, and ensuring products meet internal targets and international standards. Working closely with the wider product development team, you'll play a key role in driving improvements in efficiency, reliability, and sustainability. The Company This UK-based manufacturer is part of a larger … international group and is known for producing high-performance, user-friendly equipment used in commercial environments worldwide. With a strong investment in R&D and a culture of continuous improvement, they are committed to delivering simple, durable products with reduced running costs and environmental impact. Benefits: 25 days holiday + bank holidays Company pension scheme Ongoing training & development What More ❯

Performance Test Engineer - £565 per day Outside IR35 - Contract - London (Hybrid) La Fosse has partnered with an established and reputable business to recruit a Performance Test Engineer for an initial 4-month contract . This role requires an individual with exceptional hands-on performance testing experience , capable of designing, executing, and analysing performance tests … role in ensuring scalability, stability, and reliability of business-critical application Key requirements: Proven experience in UI automation using Selenium with C#/.NET. Strong background in load and performance testing with JMeter. Skilled in designing, executing, and analyzing performance test cases. Proficient in Zephyr for Jira for test management and defect tracking. Interview Processes: 2 stage interview More ❯

Performance Test Engineer - £565 per day Outside IR35 - Contract - London (Hybrid) La Fosse has partnered with an established and reputable business to recruit a Performance Test Engineer for an initial 4-month contract . This role requires an individual with exceptional hands-on performance testing experience , capable of designing, executing, and analysing performance tests … role in ensuring scalability, stability, and reliability of business-critical application Key requirements: Proven experience in UI automation using Selenium with C#/.NET. Strong background in load and performance testing with JMeter. Skilled in designing, executing, and analyzing performance test cases. Proficient in Zephyr for Jira for test management and defect tracking. Interview Processes: 2 stage interview More ❯

Performance Test Engineer - £565 per day Outside IR35 - Contract - London (Hybrid) La Fosse has partnered with an established and reputable business to recruit a Performance Test Engineer for an initial 4-month contract . This role requires an individual with exceptional hands-on performance testing experience , capable of designing, executing, and analysing performance tests … role in ensuring scalability, stability, and reliability of business-critical application Key requirements: Proven experience in UI automation using Selenium with C#/.NET. Strong background in load and performance testing with JMeter. Skilled in designing, executing, and analyzing performance test cases. Proficient in Zephyr for Jira for test management and defect tracking. Interview Processes: 2 stage interview More ❯

Performance Test Engineer - £565 per day Outside IR35 - Contract - London (Hybrid) La Fosse has partnered with an established and reputable business to recruit a Performance Test Engineer for an initial 4-month contract . This role requires an individual with exceptional hands-on performance testing experience , capable of designing, executing, and analysing performance tests … role in ensuring scalability, stability, and reliability of business-critical application Key requirements: Proven experience in UI automation using Selenium with C#/.NET. Strong background in load and performance testing with JMeter. Skilled in designing, executing, and analyzing performance test cases. Proficient in Zephyr for Jira for test management and defect tracking. Interview Processes: 2 stage interview More ❯

Performance Test Engineer - £565 per day Outside IR35 - Contract - London (Hybrid) La Fosse has partnered with an established and reputable business to recruit a Performance Test Engineer for an initial 4-month contract . This role requires an individual with exceptional hands-on performance testing experience , capable of designing, executing, and analysing performance tests … role in ensuring scalability, stability, and reliability of business-critical application Key requirements: Proven experience in UI automation using Selenium with C#/.NET. Strong background in load and performance testing with JMeter. Skilled in designing, executing, and analyzing performance test cases. Proficient in Zephyr for Jira for test management and defect tracking. Interview Processes: 2 stage interview More ❯

Senior Performance Modelling Engineer Top of the market salaries & hybrid working! My client is a global telecommunications company looking for a Senior Performance Modelling Engineer to play a crucial role in shaping the future of CPU/NPU architecture. Your responsibilities will include planning and implementing tool systems for architectural exploration and performance analysis. You … the charge in software/hardware vertical integration and contribute to the planning of co-optimization features for next-generation processors. They are looking for an experienced and talented engineer, with a strong understanding of NPU/CPU architecture and workload extraction, to develop strategies for Software/Hardware co-optimisation features and lead the integration of software and … hardware components for next generation processor. What's required? Experience with workload modelling and development of CPU/NPU architecture Development of slicing tools Skilled with developing and utilising performance simulators - GEM5, Sniper etc Proficient in benchmark analysis and and charicterisation If you are a Senior Performance Modelling Engineer looking for an exciting opportunity within a world More ❯

Senior Performance Modelling Engineer Top of the market salaries & hybrid working! My client is a global telecommunications company looking for a Senior Performance Modelling Engineer to play a crucial role in shaping the future of CPU/NPU architecture. Your responsibilities will include planning and implementing tool systems for architectural exploration and performance analysis. You … the charge in software/hardware vertical integration and contribute to the planning of co-optimization features for next-generation processors. They are looking for an experienced and talented engineer, with a strong understanding of NPU/CPU architecture and workload extraction, to develop strategies for Software/Hardware co-optimisation features and lead the integration of software and … hardware components for next generation processor. What's required? Experience with workload modelling and development of CPU/NPU architecture Development of slicing tools Skilled with developing and utilising performance simulators - GEM5, Sniper etc Proficient in benchmark analysis and and charicterisation If you are a Senior Performance Modelling Engineer looking for an exciting opportunity within a world More ❯

Job Overview: We are looking for an experienced and highly motivated engineer to join one of the hard-working teams within Systems Engineering, with a strong focus on performance analysis. This role is ideal for someone passionate about deep performance investigations, bottleneck identification, and data-driven architectural insights - alongside developing supporting C++ models. About the Role In … this role, your primary responsibility will be performance analysis of next-generation Interconnect IP. You will work closely with architecture, design, and modeling teams to evaluate design trade-offs, identify bottlenecks, improve modeling accuracy, and drive performance validation. About System IP This position is part of the Interconnect Product Team. The Interconnect team develops Arm's CoreLink Interconnect … IP - scalable, high-performance NoCs designed for intelligent connected systems across markets such as mobile, IoT, networking infrastructure, and automotive. Our solutions are optimized for Responsibilities: Drive performance analysis of Interconnect IP, including advanced Network-on-Chip designs. Evaluate architectural design trade-offs to influence performance and scalability. Investigate and identify performance bottlenecks through deep analysis More ❯

Performance Test Engineer (Python Automation for large-scale, low-latency, distributed systems Remote Europe) Location: Remote (Europe & UK only) Full-Time | 6-Month Contract | Start Date: within 1-2 weeks £350pd IR35 Outside TBC We're seeking a hands-on Performance Test Engineer with Strong Python and automation expertise to design, build, and execute the performance … latency under millions of concurrent users, and drive system optimizations across cloud infrastructure and code. This is a technical, high-impact role ideal for someone passionate about distributed systems performance, automation, and data-driven tuning. Profile: 3-5+ years of performance engineering for large-scale, low-latency, distributed systems. Proven success meeting p95/p99 latency SLAs … strong documentation and collaboration skills. Based in EU or UK with English (C1 or higher). Nice to have: Java, Bash scripting, Terraform. Key Responsibilities: Define and execute comprehensive performance test plans (load, stress, spike, soak, scalability, failover). Model real-world streaming traffic patterns (burstiness, fan-out, cache behavior, cold-start, geo distribution). Build automated load frameworks More ❯

As a Systems Performance Engineer, within one of our systems engineering teams, you will provide performance prediction and analysis expertise to major defence programmes, developing the latest Complex Weapons capabilities for the UK Armed Forces in response to advanced threats in all domains (Air, Land, Sea). Expect assignments across concept, assessment or demonstration phase contracts, covering More ❯

Product Performance & Test Engineer, Laboratory Lead, COR7366 A rare and exciting opportunity has arisen for a Product Performance & Test Engineer/Laboratory Lead, to join a UK-based R&D and manufacturing organisation driving innovation in sustainable appliance design. The Role The Product Performance & Test Engineer will lead the setup and operation of a More ❯

Job Title: Junior Performance Test Engineer Sector: Test consultancy specialising in financial services Essential Skills: Performance testing using JMeter Location: Primarily remote with c1 day per month in the consultancy office in Berkshire & client visits when requested Rate: £250/Day (Outside IR35) Start Date & Duration: Immediate for 6-8 weeks initially Saffron QA is the recruitment … expanding software testing consultancy. The organisation has a reputation for providing high calibre software testing services within the financial services sector. We are in the market for a Junior Performance Test Engineer with previous experience of assisting in the creating of performance testing solutions and have sound knowledge/experience of JMeter. You will be working on … a financial services project. We are looking for a candidate with the following experience; Experience of Performance testing using JMeter Good Java programming skills. Ability to assist in the designing and implementation of performance testing solutions. Provide regular status updates and reports on testing progress to the Test Manager and stakeholders. This position is being offered on a More ❯

Job Title: High-Performance Computing Engineer Pay Rate: £39.18ph Inside IR35 - PAYE Only Current End date: 31/01/2026 - foresee this being a 12-month contract Location: Pyms Lane, Crewe, CW1 3PL Working Pattern: Hybrid 3 days on site - flexible on days, Int Travel - Europe 3-4 times per year Driving licence required Are you ready … to drive innovation in the automotive industry? Adecco working in partnership with Bentley motors wants you to join us as a High-Performance Computing Engineer and be part of a dynamic team committed to excellence! Key Responsibilities: * Technical Authority: Lead the High-Performance Computer 4 (HCP4) initiatives for BEV/PHEV architectures. Provide in-depth technical knowledge … and guidance to achieve business objectives and timely project deliveries. * Deliverables Management: Accountable for ensuring deliverables meet specified timelines, quality standards, and budget constraints. Utilize Key Performance Indicators (KPIs) to monitor progress and performance. * Cross-Functional Collaboration: Work closely with Engineering, Manufacturing, Quality, and Suppliers. Foster effective communication to ensure seamless cross-functional collaboration. * Strategic Direction: Develop and influence More ❯

Job Title: High-Performance Computing Engineer Pay Rate: £39.18ph Inside IR35 - PAYE Only Current End date: 31/01/2026 - foresee this being a 12-month contract Location: Pyms Lane, Crewe, CW1 3PL Working Pattern: Hybrid 3 days on site - flexible on days, Int Travel - Europe 3-4 times per year Driving licence required Are you ready … to drive innovation in the automotive industry? Adecco working in partnership with Bentley motors wants you to join us as a High-Performance Computing Engineer and be part of a dynamic team committed to excellence! Key Responsibilities: * Technical Authority: Lead the High-Performance Computer 4 (HCP4) initiatives for BEV/PHEV architectures. Provide in-depth technical knowledge … and guidance to achieve business objectives and timely project deliveries.* Deliverables Management: Accountable for ensuring deliverables meet specified timelines, quality standards, and budget constraints. Utilize Key Performance Indicators (KPIs) to monitor progress and performance.* Cross-Functional Collaboration: Work closely with Engineering, Manufacturing, Quality, and Suppliers. Foster effective communication to ensure seamless cross-functional collaboration.* Strategic Direction: Develop and influence More ❯

go-live confidence for the biggest retail brands. Learn more about us here. This is an exciting opportunity to join Spike at a time when we are growing our Performance practice . We are looking for Performance Engineers to join us working as part of a team executing effective and professional technical engineering services across our growing client … portfolio on different projects. You will use a wide variety of Performance Testing solutions, technologies, and tools and contribute to the achievement of business objectives by executing technical work with a level of supervision. Key responsibilities Contributes to the successful completion of technical areas within projects. Develops and executes performance testing throughout the complete development lifecycle, from project … goals. Accurately identifies project risks and reports effectively to relevant stakeholders. Manages issues, risks, actions, dependencies, and defects to the success of the project. Required skills Experience of delivering performance testing throughout the software delivery lifecycle. Experience of analysing performance issues in at least one performance test tool and experience of application and infrastructure monitoring tools. Ability More ❯