29 sdet jobs found in London

SDET 6 Month contract £450 - £500 per day Outside IR35 London/Hybrid - 2x days a week in London Design and develop automated testing frameworks and strategies with Cypress 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...

SDET 6 Month contract £450 - £500 per day Outside IR35 London/Hybrid - 2x days a week in London Design and develop automated testing frameworks and strategies with Cypress 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...

SDET 6 Month contract £450 - £500 per day Outside IR35 London/Hybrid - 2x days a week in London Design and develop automated testing frameworks and strategies with Cypress 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...

iO are looking for an experienced Automation Test Engineer with active eDV Clearance for a client of ours in the National Security space. This role offers the chance to work across some very exciting projects, on multi-year programmes of work. Start: ASAP Location: London & Milton Keynes Duration: 6 months Rate: £600 - £675 per day, Outside IR35 ** Active eDV Cloearance is essential for this role, given the nature of the work/projects.** Essential experience Proven experience as an Automation Test Engineer, Software Development Engineer in Test (SDET), QA Automation Engineer or similar role. Strong hands-on experience developing automated tests using Python 3.13+ . Experience testing containerised applications using Docker . Experience building and maintaining automated test frameworks such as PyTest, Playwright, Selenium or Robot Framework . Experience testing APIs, user interfaces, integration points and microservices. Experience integrating...

iO are looking for an experienced Automation Test Engineer with active eDV Clearance for a client of ours in the National Security space. This role offers the chance to work across some very exciting projects, on multi-year programmes of work. Start: ASAP Location: London & Milton Keynes Duration: 6 months Rate: £600 - £675 per day, Outside IR35 *Active eDV Clearance is essential for this role, given the nature of the work/projects.* Essential experience Proven experience as an Automation Test Engineer, Software Development Engineer in Test (SDET), QA Automation Engineer or similar role. Strong hands-on experience developing automated tests using Python 3.13+ . Experience testing containerised applications using Docker . Experience building and maintaining automated test frameworks such as PyTest, Playwright, Selenium or Robot Framework . Experience testing APIs, user interfaces, integration points and microservices. Experience integrating automated...

🚨 Senior Playwright SDET | £700/day | Outside IR35 | Front Office Trading | London I'm working with a leading global investment bank looking to hire an exceptional Playwright SDET to join their Front Office Derivatives Technology team. This isn't your typical automation role. You'll be embedded within a high-performing engineering team, working directly alongside developers on a strategic front end trading platform. The rate reflects the calibre of engineer they're looking for. 💰 Package £700 per day Outside IR35 12-month rolling contract 1 day per week in the London office What they're looking for This role is suited to a highly technical SDET who is passionate about automation and enjoys writing production-quality code. You must have: ✅ Strong commercial experience with Playwright ✅ Excellent coding skills in JavaScript and TypeScript ✅ Experience building and maintaining automation frameworks ✅ Previous experience working on...

Freelance Senior Product Designer (Outside of IR35) Duration: 9 months Start Date: End of August or ASAP Day Rate: Please specify in your application Contract: (Outside of IR35) Join Our Team as a Freelance Senior Product Designer (Outside of IR35) at Beyond Sports! Are you passionate about complex product systems, pixel-perfect UI, and leading the design of next-generation digital experiences that capture global audiences? At Beyond Sports, we don’t just visualize sports, we reinvent how fans experience them. Together with partners like NFL, NHL, FIFA, and Disney, we push the boundaries of real-time sports data, 3D graphics, and AI-driven storytelling across web and native mobile platforms. If you're an experienced Senior Product Designer with an exceptional visual craft, deep UX strategy expertise, and a track record of driving complex design initiatives alongside fast-moving engineering squads, this 9-month contract is an exciting opportunity to make a...

Boomi Architect London (Remote) 3 Month Rolling Contract £500/day (Outside IR35) Boomi Architect needed for a 3 Month Rolling Contract based in London (Hybrid). Start ASAP in August/September 2026. Primarily working remotely from home with occasional travel to offices in London and Telford . A chance to work with a leading global IT transformation on a large-scale Government project. Paying up to £500/day (Outside IR35). Start ASAP during Summer 2026. Key skills, experience + tasks will include: Boomi Solution Architect with a strong focus on Boomi / iPaaS, API Management, Event Streaming, integration architecture, governance + technical leadership. Integration Adoption & Project Onboarding - architecture engagement + onboarding of priority projects onto the strategic integration platform (e.g. SDEC, S4H, DWIT). Production of project-specific integration designs aligned to approved iPaaS, API and Streaming patterns. Completion of architecture assurance...

Project Manager, Delivery Performance and Governance Systems Contract, outside IR35, initial 3 to 6 months. Remote first with 1 to 2 days per week onsite in West London. Our client runs technology delivery across portfolios, delivered through tribes and squads staffed by a mix of internal, offshore and strategic vendor partners. A standard performance metrics framework already exists in Jira, with rolled-up reporting in Jira Align comparing vendors and teams like for like. This role owns the delivery plan and governance that keeps that framework accurate, current and expanding: onboarding new teams and vendors, driving the workstream to bring budget data into Jira, and managing the vendor relationship where performance falls short of the agreed standard. This is a hands-on role. There are no direct reports. You will hold the governance cadence with Tribe Heads and vendor account managers in the morning, then build the deck, update the plan and configure the Jira board...

Boomi Architect London (Remote) 3 Month Rolling Contract £500/day (Outside IR35) Boomi Architect needed for a 3 Month Rolling Contract based in London (Hybrid). Start ASAP in August/September 2026. Primarily working remotely from home with occasional travel to offices in London and Telford . A chance to work with a leading global IT transformation on a large-scale Government project. Paying up to £500/day (Outside IR35). Start ASAP during Summer 2026. Key skills, experience + tasks will include: Boomi Solution Architect with a strong focus on Boomi/iPaaS, API Management, Event Streaming, integration architecture, governance + technical leadership. Integration Adoption & Project Onboarding - architecture engagement + onboarding of priority projects onto the strategic integration platform (eg SDEC, S4H, DWIT). Production of project-specific integration designs aligned to approved iPaaS, API and Streaming patterns. Completion of architecture assurance reviews and...

Senior/Principal Data Engineer - Databricks - Outside IR35 £550-£700 per day | Outside IR35 | Fully Remote UK | ASAP Start We're supporting a fast-growing Data & AI Consultancy that is expanding its Databricks engineering capability across several client projects. We're looking for experienced Senior and Principal Data Engineers with strong hands-on Databricks expertise. Multiple contract positions are available, ranging from senior hands-on delivery through to principal-level technical leadership and architecture. The Role Depending on your level, you'll take ownership of designing, building and/or leading modern Databricks data platforms, working across large-scale data engineering, platform architecture, governance and deployment. You'll work with engineering, architecture and business teams to deliver scalable production-grade solutions while helping establish strong engineering standards across the wider team. Key Responsibilities Design...

Mayfair - 2 days/week on site - 6 months initial, strong likelihood of extension - up to £600/day (outside IR35) First data hire for a lean, fast-growing professional services firm built for an AI-enabled world. You'll work directly with the engineering lead to build and harden a Databricks lakehouse from scratch, and set the standards as the platform scales. What you'll do Build ingestion pipelines into the Databricks lakehouse Model data through medallion layers in Delta Lake Build reconciliation and data quality checks into pipelines Set up governance via Unity Catalog Harden pipelines for production What you'll bring Deep, hands-on Databricks experience: Delta Lake, PySpark, Spark SQL, Unity Catalog Strong Python and production experience on a major cloud Comfortable owning workstreams end to end with minimal oversight Clear communicator, commercially aware Nice to have Databricks AI/ML stack (MLflow, Vector Search, Mosaic AI) RAG or...

Sitecore Developer/6 month contract/Fully remote/£300 to £400pd (Outside IR35) I am currently looking for a FS Sitecore developer to join an agency client of ours on a 6 month initial contract. This can be completed on a fully remote basis and has been determined outside IR35. You will be joining an existing project and must have experience with the following: Extensive Sitecore development experience Commercial React/Next.Js experience Agile working Self sufficient Familiar with agency set up, stakeholder management etc If of interest, please apply with your latest CV and I will be in touch to discuss in more detail. Best,Connor

Job Title: Full Stack Python Developer - Claude Experience - OUTSIDE IR35 Location: Fully remote - US or UK based (must be able to work ET hours) Salary/Rate: $70 to 90 per hour Start Date: 01/09/2026 Job Type: Contract role - fully remote - 6 months Company Introduction We have an exciting opportunity now available with one of our sector-leading consultancy clients! They are currently looking for a skilled Full Stack Developer to join their team for a six-month contract. Job Responsibilities/Objectives The Senior Full Stack Engineer owns feature delivery on the client's B2B SaaS product serving home energy brands. Working under the direction of the Engineering Lead and the Product Owner, this role builds largely independently within our established stack and codebase: the architecture is set, the prototype exists, and the job is turning designs and specs into production features at 0-to-1 velocity. The ideal candidate is a senior, self-directed engineer...

Boomi Integration Developer Job Title: Boomi Integration Architect Location: London or Birmingham (hybrid) Salary/Rate: £400 a day outside IR35 Start Date: 24th August 2026 Job Type: Initial 12-month contract Company Introduction We have an exciting opportunity now available with one of our sector-leading consultancy clients! They are currently looking for a skilled Boomi Integration Architect to lead the design, development, and governance of enterprise integration solutions. Job Responsibilities/Objectives You will be responsible for the creation, design, development, and implementation of their in-house RPA systems. You will also have to investigate, analyse, and set up automated processes to maximise efficiency for a business model. This is done with the help of RPA technologies and tools.") Design and implement enterprise-wide integration solutions using Boomi AtomSphere. Define integration architecture standards, reusable frameworks, and...

Data Platform Architect - ASAP START - OUTSIDE IR35 - SC CLEARED - UK Central Government Tecknuovo is a digital technology consultancy with a Deliberately Different approach. This means we focus on people, not technology. We move at pace and ensure Zero Dependency on us at the end of each project. What you'll be working towards: We're looking for an experienced Data Architect to provide architectural oversight and governance across an established government data platform. This is not a greenfield architecture role. The platform is already designed and in delivery, and you'll work closely with delivery teams to ensure solutions remain aligned to architectural standards, governance requirements, and GDS principles.You'll act as a trusted advisor to both technical teams and stakeholders, supporting design reviews, architectural assurance, data governance, and platform evolution. What you'll be doing: Provide architectural oversight and assurance across a...

Job Description: Senior Delivery/Product Manager - Discovery Central Government Consultancy. Short Term/Remote Working Outside IR35 - £500-£600 As a Senior Delivery Manager, you will lead a critical new Discovery phase from the ground up. In this role, you will bridge the gap between product strategy and executionshaping product vision and requirements while establishing robust delivery governance to set the project up for long-term success. As a Senior Delivery Manager your duties will be; Deliver services that are best in class for government, giving the same level of digital experience users expect from daily interaction with the most respected web services Deliver projects and products using the appropriate agile project management methodology, learning and iterating frequently Work with the Product/Service manager and designers to define the roadmap for any given product Lead the collaborative, dynamic planning process - prioritising the...

Mobile App Tech Lead (React Native) – iOS & Android Contract | Remote | Outside IR35 £700–750 per day | ASAP start A well-established, globally prestigious organisation is looking for a Mobile App Tech Lead to own the technical direction of its React Native application across iOS and Android, with the platform potentially extending to WeChat in future. This is a hands-on leadership role. You'll set the architecture, define engineering standards, and make sure everything shipped is secure, scalable and built to last. You'll also oversee external delivery partners, reviewing their solutions and holding the line on technical quality and risk. What you'll be doing: Owning mobile architecture, integration and engineering governance end to end Setting technical direction and ensuring solutions are secure, scalable and maintainable Reviewing external vendor delivery: solution quality, technical risk, and output Working with internal backend and platform...

Senior Infrastructure Engineer - Central London £550 - £600 p/d (outside IR35) 3 month initial contract A leading engineering business is seeking a Senior Infrastructure Engineer to join their team. They are a well-established business about to enter a period of considerable operational change, including merger and acquisition activity, making it an exciting time to join and be part of their journey. Reporting into the Infrastructure Manager, you will oversee core infrastructure and networking. You'll work closely with managed service providers to ensure seamless operations and business continuity, whilst taking a lead on regular site set-ups and supporting infrastructure integration across newly acquired entities. Key Responsibilities: Lead and manage office and site networks, aligning with business strategy Act as an escalation point for the Service Desk Team Set up and configure Local Area Networks (LANs), including hardware deployment and support Coordinate with...

Sitecore Developer/6 month contract/Fully remote/£300 to £400pd (Outside IR35) I am currently looking for a FS Sitecore developer to join an agency client of ours on a 6 month initial contract. This can be completed on a fully remote basis and has been determined outside IR35. You will be joining an existing project and must have experience with the following: Extensive Sitecore development experience Commercial React/Next.Js experience Agile working Self sufficient Familiar with agency set up, stakeholder management etc If of interest, please apply with your latest CV and I will be in touch to discuss in more detail. Best, Connor