20 of 20 Permanent Performance Testing Jobs in Central London

Senior Performance Tester - Non-functional - 3 month contract - paying £550 Inside IR35 - Hybrid (2 days a week) We’re looking for an experienced Senior Performance Tester to join a high-performing team working on a global streaming platform that powers millions of users across video-on-demand and live services. What you’ll do: Develop and maintain a … Gatling-based performance testing framework integrated into CI/CD pipelines. Define non-functional requirements and performance acceptance criteria. Analyze performance test results and production metrics to identify trends, risks, and improvements. Work with modern technologies including Docker, Kubernetes, Kafka, and NoSQL databases. Mentor junior testers and drive continuous improvement in performance testing practices. … What we’re looking for: 5+ years’ experience in non-functional/performance testing for large-scale applications. Hands-on experience with Gatling and open-source performance tools. Strong knowledge of CI/CD tools (Jenkins, GitHub Actions, Gradle/Maven). Skilled in monitoring/logging with Prometheus and Grafana. Proficiency in scripting languages (Scala, Python More ❯

Senior Performance Tester - Non-functional - 3 month contract - paying £550 Inside IR35 - Hybrid (2 days a week) We’re looking for an experienced Senior Performance Tester to join a high-performing team working on a global streaming platform that powers millions of users across video-on-demand and live services. What you’ll do: Develop and maintain a … Gatling-based performance testing framework integrated into CI/CD pipelines. Define non-functional requirements and performance acceptance criteria. Analyze performance test results and production metrics to identify trends, risks, and improvements. Work with modern technologies including Docker, Kubernetes, Kafka, and NoSQL databases. Mentor junior testers and drive continuous improvement in performance testing practices. … What we’re looking for: 5+ years’ experience in non-functional/performance testing for large-scale applications. Hands-on experience with Gatling and open-source performance tools. Strong knowledge of CI/CD tools (Jenkins, GitHub Actions, Gradle/Maven). Skilled in monitoring/logging with Prometheus and Grafana. Proficiency in scripting languages (Scala, Python More ❯

optimise and innovate. We turn big ideas into the products, content and services millions of people love. And we do it all right here at Sky. As a Senior Performance Engineer, you will be working as part of Global Commerce Central test team. You will be responsible for coordinating performance testing activities, acting as a single point … management skills, including ability to communicate complex concepts to non-technical and technical audiences. Taking ownership of NFR, requirement analysis and finalisation and driving non-functional initiatives like Chaos testing Detailed results analysis including application monitoring, identify Performance bottlenecks and recommend/implement improvements or performance optimisation. Mediate potential conflicts and foster solutions-oriented discussions with stakeholders. … Establish and maintain efficient and scalable performance testing automation framework. Design, develop and maintain Performance Test scripts. Test execution & co-ordination across multiple external and internal teams for issue resolution. Conduct discovery process to specify scope, extent and type of Performance testing required. Able to define and troubleshoot Test environments to identify issues across System More ❯

Job Title: Performance Test Engineer (3-6 month FTC) 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 Salary: £50,000/annum + benefits Start Date: We require someone to start ASAP Saffron QA … is the recruitment partner to a successful and 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 Performance Test Engineer with previous experience of designing and developing performance testing solutions and have sound knowledge/experience … the consultancy on test automation proof of concepts as well as presenting and demoing solutions to clients. We are looking for a candidate with the following experience; Experience of Performance testing using JMeter. Good Java programming skills. Open to building test automation skills in Typescript and Playwright. Participate in the continuous improvement of the Quality Engineering process, including More ❯

Job Title: Performance Test Engineer (3-6 month FTC) 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 Salary: £50,000/annum + benefits Start Date: We require someone to start ASAP Saffron QA … is the recruitment partner to a successful and 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 Performance Test Engineer with previous experience of designing and developing performance testing solutions and have sound knowledge/experience … the consultancy on test automation proof of concepts as well as presenting and demoing solutions to clients. We are looking for a candidate with the following experience; Experience of Performance testing using JMeter. Good Java programming skills. Open to building test automation skills in Typescript and Playwright. Participate in the continuous improvement of the Quality Engineering process, including More ❯

Job Title: Performance Test Engineer (3-6 month FTC) 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 Salary: £50,000/annum + benefits Start Date: We require someone to start ASAP Saffron QA … is the recruitment partner to a successful and 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 Performance Test Engineer with previous experience of designing and developing performance testing solutions and have sound knowledge/experience … the consultancy on test automation proof of concepts as well as presenting and demoing solutions to clients. We are looking for a candidate with the following experience; Experience of Performance testing using JMeter. Good Java programming skills. Open to building test automation skills in Typescript and Playwright. Participate in the continuous improvement of the Quality Engineering process, including More ❯

you’ll be key to ensuring the quality and reliability of every product release. We’re looking for someone who can create robust test plans, carry out thorough feature testing, and help establish automated testing practices that scale with our fast-growing product. Your work will give the team confidence to move quickly while delivering a consistently excellent … understand requirements and define comprehensive test plans for new features Design, document, and execute manual test cases to validate functionality, usability, and edge cases Set up and maintain automated testing frameworks to increase test coverage and reduce manual effort over time Identify, document, and track defects, collaborating with developers to resolve issues quickly and effectively Establish QA best practices … Work closely with engineers to ensure automated tests are part of the CI/CD pipeline, enabling fast and reliable releases Proactively suggest improvements to product quality, processes, and testing tools Contribute to building a culture where quality is owned by everyone in the team We'd love to hear from you if you have: 3+ years of professional More ❯

do and turning feedback into perfect software, you’ll fit right in. What you’ll do Think like a user: design and execute test plans, test cases, and exploratory testing for iOS and/or Android apps Catch edge cases, regression bugs, performance hiccups, and accessibility gaps before they reach our customers Collaborate with product managers, designers, and … release readiness activities: release notes, risk assessments, and sprint reviews Help shape QA processes, promote quality culture, and share learnings with the team What we’re looking for Experience testing mobile apps on iOS and/or Android (hands-on in a product/web/mobile app environment) Strong eye for detail and a user-centric mindset Familiarity … issue tracking, and test case management Ability to write clear, reproducible bug reports and communicate effectively with cross-functional teams Optional but nice-to-have: basic automation scripting, API testing, performance testing, accessibility testing Bonus: knowledge of mobile devices, OS versions, and real-device testing vs. emulators/simulators What you’ll bring A collaborative More ❯

do and turning feedback into perfect software, you’ll fit right in. What you’ll do Think like a user: design and execute test plans, test cases, and exploratory testing for iOS and/or Android apps Catch edge cases, regression bugs, performance hiccups, and accessibility gaps before they reach our customers Collaborate with product managers, designers, and … release readiness activities: release notes, risk assessments, and sprint reviews Help shape QA processes, promote quality culture, and share learnings with the team What we’re looking for Experience testing mobile apps on iOS and/or Android (hands-on in a product/web/mobile app environment) Strong eye for detail and a user-centric mindset Familiarity … issue tracking, and test case management Ability to write clear, reproducible bug reports and communicate effectively with cross-functional teams Optional but nice-to-have: basic automation scripting, API testing, performance testing, accessibility testing Bonus: knowledge of mobile devices, OS versions, and real-device testing vs. emulators/simulators What you’ll bring A collaborative 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 across … 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 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 across … 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 More ❯

Exp: 10 + yrs Job Summary The Senior Test Specialist/Architect in Cloud Automation Testing focuses on automating testing processes in ETL (Extract, Transform, Load) and Data Warehousing environments to ensure the quality and reliability of data pipelines. The role involves designing, developing, and implementing automation scripts for testing data transformations, data loading processes, and data … quality verification. Key Responsibilities 1. Develop and execute automated test scripts for etl processes and data pipelines. 2. Collaborate with cross functional teams to design and implement automated testing frameworks. 3. Create test plans and test cases for etl and data warehouse testing. 4. Identify and troubleshoot issues in data transformations and data loading processes. 5. Conduct performance testing and ensure scalability of data pipelines. 6. Implement best practices for data quality assurance in etl environments. Skill Requirements 1. Proficiency in cloud-based automation testing tools like selenium, appium, or similar. 2. Experience in automation testing of etl (extract, transform, load) processes and data warehousing. 3. Strong understanding of sql for data querying and More ❯

Exp: 10 + yrs Job Summary The Senior Test Specialist/Architect in Cloud Automation Testing focuses on automating testing processes in ETL (Extract, Transform, Load) and Data Warehousing environments to ensure the quality and reliability of data pipelines. The role involves designing, developing, and implementing automation scripts for testing data transformations, data loading processes, and data … quality verification. Key Responsibilities 1. Develop and execute automated test scripts for etl processes and data pipelines. 2. Collaborate with cross functional teams to design and implement automated testing frameworks. 3. Create test plans and test cases for etl and data warehouse testing. 4. Identify and troubleshoot issues in data transformations and data loading processes. 5. Conduct performance testing and ensure scalability of data pipelines. 6. Implement best practices for data quality assurance in etl environments. Skill Requirements 1. Proficiency in cloud-based automation testing tools like selenium, appium, or similar. 2. Experience in automation testing of etl (extract, transform, load) processes and data warehousing. 3. Strong understanding of sql for data querying and More ❯

Tester +Permanent opportunity +Hybrid working on site in London 2/3 days a week +£42,000 - £45,000 Skills: +Software Testing experience +AWS/Azure +API +Manual and automated testing experience We're looking for a hands-on Tester who's as comfortable checking infrastructure deployments and systems performance as they are validating user journeys … environments - from cloud setups and APIs to end-user interfaces - ensuring everything we ship is rock solid, performant, and secure. This isn't a "click-around-and-tick-boxes" testing role. We need someone with strong technical grounding, curiosity, and the confidence to dive into environments beyond just the front end. Key Responsibilities Execute and maintain test plans for … backend services, and application layers. Validate deployments, configuration changes, and environment stability across cloud and on-prem environments (AWS, Azure, GCP, CI/CD). Perform integration, regression, and performance testing across multiple platforms. Collaborate with DevOps, Developers, and Product teams to identify and resolve issues early in the lifecycle. Contribute to continuous improvement of QA practices, tools More ❯

wide big data solutions Create integration and application technical design documentation Conduct peer-reviews of functional and technical design documentation Develop, configure, and execute test cases along with unit testing Perform code reviews and ensure coding standards are applied across solution components Resolve complex defects during testing phases and identify root causes Support and execute performance testing More ❯

wide big data solutions Create integration and application technical design documentation Conduct peer-reviews of functional and technical design documentation Develop, configure, and execute test cases along with unit testing Perform code reviews and ensure coding standards are applied across solution components Resolve complex defects during testing phases and identify root causes Support and execute performance testing More ❯

of quality assurance processes. Throughout the implementation and maintenance process, this candidate should use data analysis to better understand quality reporting measures and improve processes. Responsibilities 1. Playwright (automation testing) (Must) 2. Java/TypeScript (strong programming skills) 3. Gatling (performance testing) 4. CI/CD (integration & deployment pipelines) Why join Sonata Software? At Sonata, you ́ll More ❯

of quality assurance processes. Throughout the implementation and maintenance process, this candidate should use data analysis to better understand quality reporting measures and improve processes. Responsibilities 1. Playwright (automation testing) (Must) 2. Java/TypeScript (strong programming skills) 3. Gatling (performance testing) 4. CI/CD (integration & deployment pipelines) Why join Sonata Software? At Sonata, you ́ll More ❯

dedicated UX/UI designer, engaging in rapid daily iteration to translate high-fidelity, interactive prototypes into pixel-perfect, production-ready code. ? Real-Time Data Streaming: Engineer the high-performance live transcript view, which displays the AI-screened conversation as the phone is ringing . This involves consuming real-time streaming text data from our backend AI orchestration layer … via WebSockets. ? Mastering Perceived Performance: Implement the critical mid-call intervention feature, allowing a user to seamlessly accept a call from the AI agent. You will become an expert in designing for our < 1000ms V2V (voice-to-voice) latency budget, ensuring the entire UX flow feels fast and responsive. ? API & Backend Integration: Partner with our backend (Application & AI Orchestration … models required to power the Welcome Manager's features, from live transcription to post-call entity-extracted summaries. ? MWC Demo Ownership: Be directly responsible for the polish, stability, and performance of the Welcome Manager application for its critical debut at MWC 2026. ? Cross-Functional Partnership: Collaborate closely with the other Senior Android Engineer (who owns the native CallScreeningService and More ❯

experience) London Our Client An established UK communications infrastructure provider is looking for a Design Engineer specialising in IP networking, Ethernet, and Wi-Fi systems. Known for delivering high-performance solutions in complex, large-scale environments, the company works across sectors to design, install, and commission advanced connectivity systems. Their approach combines technical precision, robust engineering practices, and a … focus on long-term reliability, enabling them to deliver projects that meet demanding performance and security standards. The Role The Design Engineer will be responsible for developing detailed technical designs, specifications, schedules, CAD drawings, and documentation for IP networking and wireless communication systems. The role covers the full lifecycle from site survey to commissioning, ensuring network infrastructure meets capacity … availability, and security requirements. Key responsibilities include network modelling, capacity planning, performance optimisation, and overseeing commissioning activities. The successful candidate will work closely with internal teams and external partners to deliver innovative, fit-for-purpose networking solutions for high-profile projects. The ideal candidate will have a strong track record in IP network design and delivery, with experience in More ❯