1 to 25 of 105 Performance Testing Jobs in London

integration, system, regression, and end-to-end testing. Validate merchant onboarding journeys, our Accept application flows, payment processing, settlements, and terminal management capabilities. Execute testing across web, mobile (iOS & Android), API, and backend systems. Prepare detailed test plans, test scenarios, test cases, and test execution reports. Perform API testing and integration testing across internal and third-party platforms. Support SIT, UAT, FOV (First Occurrence Validation), production releases, and post-release verification activities. Validate business-critical payment processing and settlement workflows. Perform data validation, reconciliation, and operational testing to ensure end-to-end integrity. Identify, log, track ...

integration, system, regression, and end-to-end testing. Validate merchant onboarding journeys, our Accept application flows, payment processing, settlements, and terminal management capabilities. Execute testing across web, mobile (iOS & Android), API, and backend systems. Prepare detailed test plans, test scenarios, test cases, and test execution reports. Perform API testing and integration testing across internal and third-party platforms. Support SIT, UAT, FOV (First Occurrence Validation), production releases, and post-release verification activities. Validate business-critical payment processing and settlement workflows. Perform data validation, reconciliation, and operational testing to ensure end-to-end integrity. Identify, log, track ...

Assurance Identify practical applications of generative AI, machine learning and agentic AI Translate concepts into repeatable, commercially viable services and accelerators Shape approaches for testing, validating and monitoring AI systems Encourage disciplined experimentation that delivers measurable value Requirements Significant experience within software Quality Engineering, testing or Digital Assurance … Strong technical understanding of modern test automation approaches, architectures and frameworks Strong knowledge of performance testing and performance engineering Experience with modern Agile, DevOps and CI/CD delivery models Experience defining Quality Engineering strategies, frameworks or technical standards Strong understanding of generative AI and related technologies ...

user-centred design and agile delivery, and more to deliver innovative digital services that matter. Role Overview We are looking for a Senior Performance Tester to deliver hands-on load and performance testing across large-scale digital services and Back End applications, with experience of working with … cloud-based distributed services. This is a technical, delivery-focused role operating in structured and governed environments where performance, resilience, and scalability are critical to service success. Key Responsibilities Design and execute load, stress, volume, soak, and scalability tests Analyse performance results, logs, and system metrics to identify ...

Title – Performance TesterLocation – LondonWho you’ll be working withIn Business Technology Solutions (BTS) we specialise in navigating our clients through the complexities of large-scale, technology-driven transformation programmes, using our skills to drive outstanding delivery. Having the right people using the right methodology and following the right process … gives every client the right result.Managed Testing Services (MTS) is a new Delivery Unit within Business Technology Solutions focusing on helping our client’s achieve business value through testing transformation. The MTS function is responsible for all aspects of managed testing services focusing on: moving our clients ...

global service provider based out of : London Speechmark/Newbury/Birmingham Small Heath/Manchester/Glasgow - Telecom/network infrastructure testing experience mandatory Contract: 6–12 Months Fixed-Term Contract Clearance: SC Cleared/Eligible for SC Clearance Experience: 5+ Years Role Overview The successful candidate must … have practical experience testing and validating SD-WAN, LAN/WAN, Wi-Fi, routing and switching, network protocols, connectivity, data centre infrastructure and network performance . This is not a generic software QA or automation testing role . Candidates must demonstrate hands-on experience with network infrastructure ...

16020Company: Sopra SteriaLocation: London, GBRJob Type: PermanentJob Level: Level 4Category: Software, Testing and ArchitectureIndustry: Professional ServicesPosted Date: 2026-08-27Are you passionate about delivering high-quality Salesforce solutions that make a real business impact? Do you enjoy leading testing strategy across complex transformation programmes while driving automation … role in ensuring the quality, stability, and successful delivery of our Salesforce platforms and integrated business applications. This is an exciting opportunity to lead testing across large-scale Salesforce programmes, working alongside talented product owners, architects, developers, and business stakeholders to deliver solutions that provide exceptional value.You ...

# Lead Performance Test Engineer Apply now## **About the job you're considering**We are seeking a Lead Performance Engineer to lead a team of performance engineers delivering assurance across complex client programmes. You will set the performance strategy, define and agree non-functional requirements … quality gates, and ensure systems are scalable, resilient and ready for production.Working with engineering, architecture, DevOps, SRE, cloud and business teams, you will embed performance engineering throughout the delivery lifecycle**Hybrid working**: The places that you work from day to day will vary according to your role, your needs ...

digital wealth management platform designed to help users grow, manage, and protect their long-term wealth across savings, investments, and pensions. Задачи: Own performance from day one by embedding performance thinking into delivery plans before code is written; Define thresholds, metrics, and SLOs that govern pass or fail … including budgets for latency, error rate, and throughput; Design and build performance tests for individual services, stubbing downstream and third‐party dependencies; Map load to real production traffic to identify performance bottlenecks; Integrate performance testing into CI/CD pipelines to catch regressions automatically; Build reusable ...

platform. Create solution architecture diagrams, data-flow diagrams, integration designs, interface specifications, security models, and deployment views. Provide technical leadership throughout design, development, testing, deployment, transition, and production stabilization. Evaluate design alternatives and recommend solutions based on scalability, auditability, resiliency, security, maintainability, and operational support requirements. Ensure clear separation … business rules. Design reusable Dataiku project templates and onboarding patterns for new brokers, market-data providers, commodities, regions, and business processes. Establish Dataiku development, testing, production, version-control, promotion, deployment, and rollback standards. Define monitoring, alerting, failure handling, restart, recovery, and operational support patterns for Dataiku processes. Ensure Dataiku ...

practices. The Automation Test Engineer will play a key role in embedding quality throughout the software development lifecycle, working across UI, API, accessibility and performance testing while supporting continuous delivery at enterprise scale. Responsibilities for the Automation Test Engineer: Design, develop and maintain scalable UI and API automation … Develop and execute functional, regression, integration and end to end automated tests Perform UI automation using Selenium WebDriver and Playwright Carry out API testing using REST Assured, Postman and Swagger Conduct accessibility testing to ensure compliance with WCAG standards Support CI/CD pipelines and continuous testing ...

follows design principles (e.g. modular design, microservices, event driven architecture etc.) and make use of appropriate design patterns.Performance, Security & Compliance: Incorporate security requirements and performance considerations into all application architecture designs from the outset. The architect makes sure that applications adhere to security best practices and relevant compliance standards … risk assessments on new architectures and include controls for data protection (encryption, access control) and robust error handling. They will also design for high performance and availability – for example, recommending load balancing, caching strategies, or failover mechanisms. All solutions are evaluated for reliability, maintainability, and disaster recovery preparedness ...

Role/Job Titlke: Performance Architect Mode of working: Hybrid with 3-days onsite in London Duration: 12 Months (Likelihood of further extension Our client, working on behalf of the British postal service and courier company is urgently seeking a Performance Architect with extensive experience in Performance Architecture, Performance Engineering and System Optimization. The successful candidate will be responsible for defining and driving the performance strategy across the entire solution lifecycle, ensuring that applications and platforms are scalable, resilient, and capable of meeting business and operational demands. The role focuses on embedding performance ...

life About the Role As a Principal Software Developer in Tes t, you'll bring your extensive knowledge of software engineering, automation, and performance testing to create bespoke solutions for our clients. You'll also take a leadership role, guiding your team to success and leading by example. … will: 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 ...

lead our enterprise quality strategy across Product and Technology. This is a high-impact leadership role where you will set the direction for testing, automation, performance, security and AI-driven quality engineering, helping us deliver faster, safer and more reliable technology for our customers and colleagues. Why join … purpose-led, people-first culture where inclusion, learning and development are genuinely prioritised Opportunities to shape modern engineering practices across automation, AI, security and performance testing Career and skills development in a business recognised for colleague growth and workplace culture Employee resource groups and colleague-led initiatives that ...

Greetings from Response Informatics!! We are currently hiring a Senior Testing Engineer for an exciting client engagement. Role: Senior Testing Engineer Location: London/Newbury/Birmingham/Manchester/Glasgow, UK (Hybrid) Positions: Contract (Outside IR35) Clearance: Active SC Clearance/Non SC KEY RESPONSIBILITIES: Own test … evidence and defect records across the workstream. Maintain ALM discipline: test case structure, requirements traceability, defect lifecycle and reporting accuracy. Execute and lead complex testing across routers, switches, firewalls, hosting, data centre, LAN/WiFi, SD-WAN, UC & Unity, telephony, mobility, MPN & cloud, IoT, fixed connectivity, cloud & security ...

discover tools and techniques that can improve quality across the organisation.QA Testers MUST have:2:1 Computing Science degree from an EU UniversitySelenium WebDriverSpecFlowCypressxUnitNUnitReact Testing LibraryT-SQLTHave demonstratable experience and knowledge of a wide range of testing tools and techniques to cover things such as, Functional testing, Performance testing, Load testingHave a passion for delivering quality software and understand what it means to “Build Quality In”Want to educate other members of the Engineering team on better quality practicesKeep up to date with current trends by following the Ministry of Testing, Modern Testing ...

tools and techniques that can improve quality across the organisation. QA Testers MUST have:2:1 Computing Science degree from an EU UniversitySelenium WebDriverSpecFlowCypressxUnitNUnitReact Testing LibraryT-SQLTHave demonstratable experience and knowledge of a wide range of testing tools and techniques to cover things such as, Functional testing, Performance testing, Load testingHave a passion for delivering quality software and understand what it means to "Build Quality In"Want to educate other members of the Engineering team on better quality practicesKeep up to date with current trends by following the Ministry of Testing, Modern Testing ...

working both independently and with other AMD engineers. There is a strong emphasis on performing Proof of Concepts, tackling technical software and hardware HPC performance, debug, and capability issues, collaborating with Field Application Engineering ‘FAE’ peers, Sales colleagues, CPU and GPU Business Units, Architecture, Software, Platform teams.THE PERSON:Does … this sound familiar? We'd love to talk! Clear track record of technical execution on HPC opportunities. MUST HAVE: Expertise in HPC application performance testing on CPU (and ideally GPU). Understands HPC toolchain, how to optimise runtime performance and understands impact of system design and potential ...

eligibility to undergo DV Clearance (DV preferred)## **Role Overview**We are looking for an experienced **Test Manager** to lead the end-to-end testing strategy, governance, and delivery for a complex enterprise programme. The successful candidate will be responsible for ensuring quality across functional, integration, automation, performance, and operational acceptance testing while managing stakeholders, risks, resources, and delivery timelines.This is a hands-on leadership role requiring strong technical testing expertise, experience managing complex projects, and the ability to drive quality assurance best practices across multiple teams including third party suppliers, and guide the teams ...

Remote UK | Permanent Are you a QA/Automation Engineer who wants the opportunity to take real ownership rather than simply inherit an established testing process? We are working with a growing sports technology business that operates complex, real-time platforms handling large volumes of live data and significant … Engineer to help establish how QA works across the development team. The Role This is a hands-on position combining automation, API, functional and performance testing. You will have the autonomy to identify gaps, recommend tooling and build practical testing processes from the ground up. Rather than being ...

looking forWe are seeking a senior testing leader with a strong data specialism to partner closely with Implementation Test Leads, Data Implementation teams, technology partners and delivery stakeholders to manage all aspects of test execution for Alpha implementations. This role is accountable for end-to-end testing governance … flows, data transformation, interfaces, file-based integrations, data quality, and validation across complex client implementations.The successful candidate will have a strong understanding of data testing within financial services transformation programmes, including ETL processes, file formats, data mapping, data lineage, reconciliation, data quality controls, and methods used to transform ...

looking for We are seeking a senior testing leader with a strong data specialism to partner closely with Implementation Test Leads, Data Implementation teams, technology partners and delivery stakeholders to manage all aspects of test execution for Alpha implementations. This role is accountable for end-to-end testing … data transformation, interfaces, file-based integrations, data quality, and validation across complex client implementations. The successful candidate will have a strong understanding of data testing within financial services transformation programmes, including ETL processes, file formats, data mapping, data lineage, reconciliation, data quality controls, and methods used to transform ...

standards. You’ll build the systems, frameworks, and culture that allow the rest of engineering to own quality themselves; improving and extending our testing platform by creating the infrastructure that allows engineers to write and execute tests, and enable every engineering team to ship with more confidence. Key Responsibilities … Design and implement automation pipelines that support comprehensive testing across multiple environments with varying feature flags and realistic customer data profiles Create intelligent testing agents that simulate real user behavior to validate different configuration combinations Develop and maintain GitHub workflows and actions to automate testing, deployment ...

Senior SDET with strong experience in Golang and Kubernetes to join our core product team. In this role, you'll design and build high-performance, cloud-native back-end systems and scalable APIs to support AI workloads, including LLMs and GPU-based services. You’ll collaborate closely with cross … backend, and machine learning engineers—to design, develop, and maintain scalable test automation frameworks and quality engineering solutions. You’ll help ensure the reliability, performance, and quality of systems that power model training, inference, and orchestration in production environments, while mentoring junior engineers, championing quality best practices, and driving ...