18 lead performance tester jobs found in London

Job Information Date Opened 13/02/2026 Job Type Contract Work Experience 5+ years Industry Public Sector and Government Salary 400-450 outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Consulting 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 40 million UK citizens. We are driven by user-centred design, agile delivery, and a commitment to building innovative digital services that truly matter.   Role Overview We are seeking a highly skilled  Senior Performance Tester (Active SC Cleared)  to deliver hands-on load and performance testing across large-scale...

Job Information Date Opened 13/02/2026 Job Type Contract Work Experience 5+ years Industry Public Sector and Government Salary 400-450 outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Consulting 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 40 million UK citizens. We are driven by user-centred design, agile delivery, and a commitment to building innovative digital services that truly matter. Role Overview We are seeking a highly skilled Senior Performance Tester (Active SC Cleared) to deliver hands-on load and performance testing across large-scale digital services and backend applications. This is a technical, delivery-focused role operating in...

Job Information Date Opened 13/02/2026 Job Type Contract Work Experience 5+ years Industry Public Sector and Government Salary 400-450 outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A About Scrumconnect Consulting 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 40 million UK citizens. We are driven by user-centred design, agile delivery, and a commitment to building innovative digital services that truly matter. Role Overview We are seeking a highly skilled Senior Performance Tester (Active SC Cleared) to deliver hands-on load and performance testing across large-scale digital services and backend applications. This is a technical, delivery-focused role operating in structured and governed environments where performance, resilience,...

Job Information Date Opened 13/02/2026 Job Type Contract Work Experience 5+ years Industry Public Sector and Government Salary 400-450 outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A About Scrumconnect Consulting 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 40 million UK citizens. We are driven by user-centred design, agile delivery, and a commitment to building innovative digital services that truly matter.   Role Overview We are seeking a highly skilled  Senior Performance Tester (Active SC Cleared)  to deliver hands-on load and performance testing across large-scale digital...

Job Information Date Opened 13/02/2026 Job Type Contract Work Experience 5+ years Industry Public Sector and Government Salary 300-325 Outside IR 35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Consulting 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 40 million UK citizens. With a strong commitment to 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 with Active SC to deliver hands-on load and performance testing across large-scale digital services and backend applications, with experience of...

About the Role We are seeking an experienced Senior System Tester to play a key role in assuring the quality, reliability, and performance of complex, mission-critical systems within a major UK Government digital transformation programme. You will lead testing strategy, champion automation-first practices, and work closely with multidisciplinary delivery teams to embed a strong culture of quality and continuous improvement. This role requires deep technical expertise in modern test automation frameworks, Back End validation, service-based architectures, and performance testing. The role is a hybrid one - 2 days p/week on-site in Birmingham, and 3 days remote. Must have Active SC & NPPV3 clearance Key Responsibilities Lead the design, development, and maintenance of automated test suites using JUnit, Cucumber, and Selenium Own system, integration, regression, and end-to-end testing across microservice and distributed architectures Perform advanced...

Backend Engineer – C#, .Net, Azure | Financial Services | £600/day outside IR35| Hybrid We’re partnering with a leading financial services firm in the FinTech payment space that’s investing heavily in modernising its technology stack. With a new tech leader driving innovation, the focus is on building in-house systems that are scalable, reliable, and future-ready. About the Role Backend Engineer position You’ll take ownership of building and enhancing key client-facing applications using C#, .Net, Azure . As a Backend Engineer you will have tried and tested experience joining a FinTech/Financial Services company at the stage of 0-50 employees. This company is looking to grow significantly, building out 4 new engineering teams include Seniors and Team Leads. The work spans complex financial products, so you’ll have the chance to engage with both technical and business stakeholders across the UK. 💰 Paying up to £600 per day (Outside IR35) 🏢 1–2 days per week...

Senior Backend Developer - Ruby/Elixir Location: London - Remote Outside IR35 Immediate starter. We're supporting a technology business undertaking a major modernization programme and are looking for a Senior Backend Developer to drive a large-scale refactoring initiative across a complex, multi-service platform. This is a hands-on role for someone who enjoys untangling legacy code, improving architecture, and leaving systems in a measurably better state than they found them. You'll combine deep engineering capability with pragmatic technical leadership to deliver safer, faster, and more scalable services. What you'll be doing: Lead end-to-end refactoring across multiple backend technology stacks Redesign and modernise the messaging and event architecture Improve database performance, reliability, and schema design Reduce technical debt while keeping business disruption to a minimum Define and embed engineering standards and...

Senior Backend Developer - Ruby/Elixir Location: London - Remote Outside IR35 Immediate starter. We're supporting a technology business undertaking a major modernization programme and are looking for a Senior Backend Developer to drive a large-scale refactoring initiative across a complex, multi-service platform. This is a hands-on role for someone who enjoys untangling legacy code, improving architecture, and leaving systems in a measurably better state than they found them. You'll combine deep engineering capability with pragmatic technical leadership to deliver safer, faster, and more scalable services. What you'll be doing: Lead end-to-end refactoring across multiple backend technology stacks Redesign and modernise the messaging and event architecture Improve database performance, reliability, and schema design Reduce technical debt while keeping business disruption to a minimum Define and embed engineering standards and maintainability practices...

Senior Backend Developer - Ruby/Elixir Location: London - Remote Outside IR35 Immediate starter. We're supporting a technology business undertaking a major modernization programme and are looking for a Senior Backend Developer to drive a large-scale refactoring initiative across a complex, multi-service platform. This is a hands-on role for someone who enjoys untangling Legacy code, improving architecture, and leaving systems in a measurably better state than they found them. You'll combine deep engineering capability with pragmatic technical leadership to deliver safer, faster, and more scalable services. What you'll be doing: Lead end-to-end refactoring across multiple Back End technology stacks Redesign and modernise the messaging and event architecture Improve database performance, reliability, and schema design Reduce technical debt while keeping business disruption to a minimum Define and embed engineering standards and maintainability practices...

Transformation Business Analyst & Test Lead (Procurement Systems) Location: London (3 days onsite/2 days WFH) Contract: 10 Months (Till thr end of 2026) Day Rate: £595/day outside IR35 A leading logistics company is delivering a major digital transformation programme impacting multiple business functions, including the implementation of a new procurement platform. They are seeking a senior, hands-on Transformation Business Analyst & Test Lead to take ownership across the full delivery life cycle, from discovery and requirements through testing, go-live, and hyper-care. This is a hybrid role suited to someone who thrives in complex, multi-workstream environments and enjoys bridging business and technology to ensure solutions land successfully and deliver tangible operational value. The Role You will play a critical role in shaping and validating a new procurement solution, ensuring requirements are robust, processes are optimised, and testing is coordinated...

Role - Project Manager Location - Oxford Mint Selection are working with a leading renewable energy developer seeking an experienced on-site Project Manager to lead the construction and delivery of a major energy transition project in Oxford. This role is suited to a hands-on Project Manager with a strong background in utility-scale renewable generation, energy storage, or major infrastructure projects, capable of managing site operations and coordinating third-party EPCs, OEMs, and ICPs from pre-construction through to commissioning and handover. Scope of Work Take full ownership of the on-site project delivery from mobilisation through to commercial operation and handover, ensuring compliance with HSE, quality, and programme requirements. Act as the asset owner’s on-site representative, managing and coordinating EPC, OEM, and ICP contractors. Oversee all site-based construction activities, ensuring strict adherence to CDM Regulations, NEC contract...

Workstream Project Manager (SC cleared) Crawley or Doncaster/Hybrid (2 days a week onsite/3 days remotely) 6 months £525-£600 per day (Outside IR35) Due to the nature of the role candidates must have valid and transferrable SC security clearance. Skills Essential Analytical Project Management professional who can process data efficiently to provide solutions to problems and communicate the outcomes at all levels A robust understanding of business and commercial issues Excellent inter-personnel, communication, and customer focused skills essential Highly organised, quick and efficient. Delivers to agreed timescales with attention to detail Experience: Essential Significant experience of delivering medium and high complexity IS projects across Applications, Infrastructure, Security and Support domains Strong technical or engineering-based knowledge of IS technologies, systems and methodologies across Applications, Infrastructure, Security or Support...

Head of Data & AI Contract Opportunity - 4 Months Ipswich, UK (Hybrid/Onsite as required) Up to £750 per day Outside IR35 We are partnering with a well-established organisation based in Ipswich, UK , undergoing a major data and AI transformation. They are seeking a highly skilled and visionary Head of Data & AI to lead the transition into a truly data-driven and AI-empowered enterprise. This is a senior leadership contract role responsible for defining and delivering a comprehensive Data & AI strategy, embedding advanced analytics capabilities, and ensuring AI is deployed responsibly, securely, and at scale across the organisation. The Opportunity The successful candidate will own the end-to-end Data & AI agenda, ensuring data becomes a strategic asset that drives insight, innovation, and competitive advantage. You will hold accountability for: AI and advanced analytics Reporting and business intelligence Data engineering Data...

Head of Data & AI Contract Opportunity - 4 Months Ipswich, UK (Hybrid/Onsite as required) Up to £750 per day Outside IR35 We are partnering with a well-established organisation based in Ipswich, UK , undergoing a major data and AI transformation. They are seeking a highly skilled and visionary Head of Data & AI to lead the transition into a truly data-driven and AI-empowered enterprise. This is a senior leadership contract role responsible for defining and delivering a comprehensive Data & AI strategy, embedding advanced analytics capabilities, and ensuring AI is deployed responsibly, securely, and at scale across the organisation. The Opportunity The successful candidate will own the end-to-end Data & AI agenda, ensuring data becomes a strategic asset that drives insight, innovation, and competitive advantage. You will hold accountability for: AI and advanced analytics Reporting and business intelligence Data engineering Data...

About the Role We are seeking an experienced System Automation Test Lead to lead the testing function across a major UK Government digital transformation programme. You will be responsible for defining testing strategy, overseeing delivery, and ensuring high-quality software is released consistently and efficiently. You will lead and mentor multidisciplinary testing and automation teams, champion automation-first and quality-driven practices, and coordinate testing across multiple systems, suppliers, and stakeholders in a complex delivery environment. The role is a hybrid one - 2 days p/week on-site in Birmingham, and 3 days remote. Key Responsibilities Lead the end-to-end testing life cycle including planning, estimation, execution, and reporting Define and maintain test strategies, frameworks, and quality standards across the programme Oversee design and maintenance of automated test suites using JUnit, Cucumber, and Selenium Coordinate system,...

We are seeking a skilled System Tester to support the quality, reliability, and performance of complex software systems within a high-profile UK Government digital transformation programme. You will work as part of a multidisciplinary agile team, helping to embed a strong culture of quality, automation, and continuous improvement. You will be responsible for designing, executing, and maintaining both automated and manual tests, ensuring that digital services meet functional, non-functional, and integration requirements. The role requires strong technical testing capability across modern frameworks, Back End validation, and service-based architectures. The role is a hybrid one - 2 days p/week on-site in Birmingham, and 3 days remote. Must have SC & NPPV3 clearance. Key Responsibilities Design, develop, and maintain automated test suites using JUnit, Cucumber, and Selenium Perform system, integration, regression, and end-to-end testing across distributed...

Join Us at SRT Marine Systems as a Senior Java Developer (Performance Engineer) Job Title: Senior Java Developer (Performance Engineer) Location: Hybrid - 1 day / week in Cardiff office Job Type: Contract, Full-Time Duration: 3 months initially Status and Rate: Outside of IR35, day rate. SRT Marine Systems plc (SRT) are a market leader in its domain of international marine surveillance technology and systems. We are respected, established and an ambitious multi-national company headquartered in the UK with a global customer base. The company has a global impact in the marine domain by leading the next generation of maritime domain awareness technologies, products and systems that significantly enhance, security, safety and environment protection and sustainability. Our customers are worldwide and range from the largest national coast guards to individual vessel owners. SRT is an exciting company where high quality results are rewarded. We are ambitious and are...