20 of 20 Performance Testing Jobs in London

challenges and mentoring others, this could be your perfect next step. Why Join Ten10? Were proud to be one of the UKs leading independent consultancies for Quality Engineering, Software Testing, RPA, and DevOps . Our mission is simple: help our clients achieve their goals by implementing innovative, high-quality engineering practices. Heres what makes us stand out: Challenging Projects … aspirations. Flexibility: Our hybrid working model gives you the balance you need. The Role As a Principal Technical Consultant , youll bring your extensive knowledge of software engineering, automation, and performance testing to create bespoke solutions for our clients. Youll also take a leadership role, guiding your team to success and leading by example. What Youll Be Doing Design … and Develop: Build and support automation or performance test frameworks using the most appropriate solutions. Whether open source or commercial, or a combination . Collaborate with Clients: Work closely with clients to understand their requirements and create tailored QA strategies. Provide Expert Insights: Conduct technical QA health checks to assess and improve client approaches to automation or performance 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 ❯

pension, death in service benefit, private medical cover, reduced gym membership and free eye tests. Discretionary annual bonus schemes are offered to all staff based on individual and business performance and contribution to the business. There is also the opportunity to join the company Share Plan scheme. Cytec Solutions is a technology company, with a pedigree for developing, implementing … directly to the CPO. The Software Tester role, is a newly created position for the company and will offer the right candidate significant influence and autonomy to shape the testing approach to our business. We are looking for an experienced Software Tester who is excited to take full ownership of our testing practice. This role is ideal for … someone ready to step up beyond execution, eager to set the testing strategy, implement automation frameworks, and champion quality across our development lifecycle. Develop, maintain and execute test plans, test cases and regression suites for web and API based applications. Define and evolve the overall testing strategy across manual and automated workflows. Implement and manage a new automation More ❯

client delivers safe, efficient, and reliable navigation solutions for the commercial and defence maritime industry. They are seeking an enthusiastic and motivated Systems Test Engineer to support Commercial Platforms Testing within the New Malden office. This role focuses on Integration, Verification, and Validation activities for Radar and ECDIS product lines, particularly for a project developing Integrated Navigation System capabilities. … and troubleshoot lab equipment and setup issues. Collaborate with other engineering functions to resolve problems. Support identification, execution, and formal recording of Type Approval test activities. Assist with witness testing activities conducted by notified bodies and external test houses. Ensure all responsibilities comply with company standards of conduct and contractual processes. Carry out any other reasonable management requests. Ideal … procedures against internal and external requirements. Strong communicator, able to collaborate even when requirements are incomplete. Skilled in executing tests and problem-solving issues as they arise. Experienced in testing complex engineered systems comprising hardware and software. Hands-on tester comfortable setting up hardware and software test environments. Results-oriented, understanding delivery to schedule and budget. Demonstrates proactive initiative More ❯

client delivers safe, efficient, and reliable navigation solutions for the commercial and defence maritime industry. They are seeking an enthusiastic and motivated Systems Test Engineer to support Commercial Platforms Testing within the New Malden office. This role focuses on Integration, Verification, and Validation activities for Radar and ECDIS product lines, particularly for a project developing Integrated Navigation System capabilities. … and troubleshoot lab equipment and setup issues. Collaborate with other engineering functions to resolve problems. Support identification, execution, and formal recording of Type Approval test activities. Assist with witness testing activities conducted by notified bodies and external test houses. Ensure all responsibilities comply with company standards of conduct and contractual processes. Carry out any other reasonable management requests. Ideal … procedures against internal and external requirements. Strong communicator, able to collaborate even when requirements are incomplete. Skilled in executing tests and problem-solving issues as they arise. Experienced in testing complex engineered systems comprising hardware and software. Hands-on tester comfortable setting up hardware and software test environments. Results-oriented, understanding delivery to schedule and budget. Demonstrates proactive initiative More ❯

Software Innovation London - 3 days a week in office | Initial 12m contract | Day rate inside IR35 Join a global technology leader at the forefront of software innovation, where quality, performance and reliability drive everything they do. This is an exciting opportunity for a QA Engineer with a passion for automation, testing excellence and continuous improvement to help shape … world-class digital products. You'll work closely with development and product teams to design and execute robust testing strategies, automate quality processes and ensure the smooth delivery of complex software systems to global customers. What You'll Be Doing: Championing a culture of quality, performance and teamwork across projects Collaborating with business analysts and developers to identify … and resolve potential issues early Designing detailed test plans, user scenarios and validation procedures Managing and configuring test environments and tools Executing manual and automated testing (JavaScript/TypeScript) Troubleshooting and validating new software releases, including end-user documentation Leading automation best practices and mentoring others on quality standards What You'll Bring: Experience in QA and software testing 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 ❯

SDET 6 Month contract £425 - £475 per day Outside IR35 London/Hybrid - 2x days a week in London Design and develop automated testing frameworks and strategies with Selenium and Playwright using Javascript/Typescript. Create and maintain test scripts utilising WebDriver, Selenium, Gherkin, and Cucumber Performance testing using JMeter Write clear and concise test cases and … scenarios using JSON data structures to validate application features. Conduct thorough testing of user interfaces, ensuring compliance with HTML and CSS standards. Collaborate with developers and product teams to define testing requirements and assist with continuous integration and delivery (CI/CD) practices. Utilise Fetch API to automate interactions with web services and validate data flows. Perform exploratory … testing and contribute to the overall improvement in quality assurance processes. Identify and document defects and work closely with engineering teams to drive resolution. Mentor junior team members and provide expertise in test automation best practices. Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and More ❯

technology company is seeking an experienced Software QA Engineer to join their innovative team. This is an exciting opportunity for a detail-oriented professional who is passionate about quality, performance, and reliability, and thrives in a collaborative, fast-paced environment. Key Responsibilities Champion quality and best practice across teams and projects. Develop and execute detailed test plans and validation … procedures. Collaborate with developers and analysts to identify and resolve issues. Configure and manage test tools, troubleshoot bugs, and support release processes. Produce clear testing documentation and provide end-user training when required. Maintain strong communication with clients and stakeholders to ensure smooth delivery. Key Skills & Experience 5+ years' experience in QA or software support. Strong knowledge of Agile … methodologies and the software development lifecycle. Experience with automated testing (JavaScript/TypeScript), Playwright, and source control tools. Excellent analytical, communication, and problem-solving skills. ISTQB certification, performance testing, and client support experience are advantageous. Everybody is Welcome Diversity and Inclusion Statement PCR Digital "At PCR Digital, we are committed to ensuring that diversity, equity and inclusion More ❯

technology company is seeking an experienced Software QA Engineer to join their innovative team. This is an exciting opportunity for a detail-oriented professional who is passionate about quality, performance, and reliability, and thrives in a collaborative, fast-paced environment. Key Responsibilities Champion quality and best practice across teams and projects. Develop and execute detailed test plans and validation … procedures. Collaborate with developers and analysts to identify and resolve issues. Configure and manage test tools, troubleshoot bugs, and support release processes. Produce clear testing documentation and provide end-user training when required. Maintain strong communication with clients and stakeholders to ensure smooth delivery. Key Skills & Experience 5+ years' experience in QA or software support. Strong knowledge of Agile … methodologies and the software development lifecycle. Experience with automated testing (JavaScript/TypeScript), Playwright, and source control tools. Excellent analytical, communication, and problem-solving skills. ISTQB certification, performance testing, and client support experience are advantageous. Everybody is Welcome Diversity and Inclusion Statement | PCR Digital "At PCR Digital, we are committed to ensuring that diversity, equity and inclusion More ❯

tolerant data pipelines that process millions of operations daily. Collaborate with front-end developers to integrate user-facing elements with server-side logic. Develop and maintain APIs, ensuring high performance and responsiveness. Contribute to database design and implementation (PostgreSQL). Improve the system's throughput and incorporate performance testing into our CI pipelines. Scale services horizontally. Contribute … make fault-tolerant applications. Experience with containerization technologies (Kubernetes, Docker). Strong familiarity with database systems, particularly PostgreSQL. Comfortable using AWS and cloud computing platforms. Solid understanding of the testing pyramid, specifically unit, integration, and E2E tests. Readiness and desire to participate in code reviews. Familiar with AI tools like Claude Code. What's on Offer? Work within a More ❯

Zscaler, Netskope, Prisma Access, Cloudflare One, etc. Translate security architecture principles (Zero Trust, SASE) into actionable user stories, epics, and sprint plans. Collaborate with engineering teams on PoC setup, performance testing, latency/PoP validation, and policy enforcement. Define and measure KPIs, SLAs, and success metrics (e.g., threat coverage, latency impact, policy adherence). Ensure integration of SSE More ❯

Zscaler, Netskope, Prisma Access, Cloudflare One, etc. Translate security architecture principles (Zero Trust, SASE) into actionable user stories, epics, and sprint plans. Collaborate with engineering teams on PoC setup, performance testing, latency/PoP validation, and policy enforcement. Define and measure KPIs, SLAs, and success metrics (e.g., threat coverage, latency impact, policy adherence). Ensure integration of SSE More ❯

using Control-M and improve margin run performance. Implement trade compression and portfolio margining solutions. Collaborate with cross-functional teams to refine business requirements and deliver scalable solutions. Conduct performance testing and capacity analysis. Participate in agile ceremonies and act as Scrum Lead when required. Required Skills & Experience: 5+ years of Murex development experience, ideally within FX or More ❯

critical service functionality quickly and efficiently. Automate repetitive operational tasks ("toil") to increase system efficiency, reduce manual effort, and free up engineering time. Drive continuous improvement in system reliability, performance, and recoverability (Disaster Recovery/Business Continuity Planning). Collaborate closely with development teams (DevOps) to improve the entire software lifecycle, focusing on service stability and release engineering. Establish … and refine Service Level Indicators (SLIs), Service Level Objectives (SLOs), and Service Level Agreements (SLAs) for critical services. Conduct capacity planning and performance testing to ensure the AWS environment can handle current and future load requirements. Who we're looking for At Reapit, we prioritise hiring individuals who share our values and possess the right attitudes and behaviours 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 ❯

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 Back End 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 Back End (Application & AI … 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 ❯

and have the chance to help shape the strategy and direction.Due to the nature of the role, active SC clearance is required.It will involve hands-on functional/automation testing in a QA role, testing an AWS-based PAM solution and identity integrations (AWS > Entra ID), ensuring security, functionality, and CAF-aligned assurance.Key Responsibilities Test AWS-based PAM … configuration, deployment and privileged access journeys. Validate controls against NCSC CAF (identity, privileged access, monitoring, resilience). Execute functional, automation and API testing (UI + backend). Test authentication flows via Entra ID, including MFA and conditional access. Validate federated identity (SAML/OIDC) between Entra ID and AWS-hosted services. Perform data validation within AWS deployments. Conduct device … configuration testing for PAWS. Support integration, regression and exploratory testing. Produce clear test evidence, defects and assurance outputs. Skills & Experience Functional and API testing; experience with Postman or REST Assured. Automation experience; frameworks like Selenium useful. Knowledge of Python, JavaScript or Java for test scripting. Familiarity with JMeter or Gatling for load/performance testing. Strong AWS More ❯

Systems Engineer – 12 Month Contract – New Malden – SC Cleared About Your Role: - Maintain the Requirements database with associated contractual and acceptance details. - Take a lead role in the testing and acceptance process for both hardware & software releases. - Lead activities to support the Systems team with: o Elaboration and agreement of system requirements understanding the change in system capability against … with suggested recommendations to support the design of improvements. o Review/agreement of External Interface documents and management of interface baseline. o Leading other engineering activities such as performance testing, human factors, safety analysis, information assurance About You: As an experienced Systems Engineer, your skills and experience may include; o Experience of working with Software Systems o More ❯

of our blockchain infrastructure, ensuring seamless communication and data propagation across the network. You will focus on the gossip protocol and block delivery mechanisms, ensuring they are optimized for performance, secure against potential threats, and scalable to accommodate future growth. Responsibilities Develop and Optimize Networking Protocols: Design, implement, and optimize the gossip and block delivery protocols to enhance the … overall performance of the Solana network. Ensure Network Security: Identify and mitigate potential security vulnerabilities within the networking stack, ensuring robust protection against emerging threats. Scalability and Performance: Work on improving the scalability of the network to handle increasing transaction volumes and node participation without compromising on performance. Testing and Validation: Create and execute comprehensive tests to … validate the reliability and efficiency of the networking stack, including stress tests, fault injection, and performance benchmarking. Collaboration: Collaborate with cross-functional teams, including core protocol engineers, security experts, and infrastructure teams, to ensure the seamless integration and functioning of the networking components. Documentation and Code Review: Maintain thorough documentation of the networking protocols and conduct peer code reviews More ❯