Senior Software Development Engineer in Test

Senior Software Development Engineer in Test (SDET) — Enablement PlatformAbout SwapAt Swap, we are revolutionizing the landscape of modern agentic commerce. Our innovative AI-native platform seamlessly connects backend operations with a cutting-edge storefront experience, designed for brands aspiring to sell anything, anywhere.Our comprehensive offerings include cross-border solutions, tax management, returns processing, demand planning, and our next-gen agentic storefront, empowering merchants with full operational transparency and the ability to make informed, margin-preserving decisions in real-time.We are dedicated to fostering a culture that emphasizes clarity, creativity, and collective ownership as we reshape the future of global commerce.Role OverviewWe are seeking a talented Senior SDET to become an integral part of our Enablement Group. This team is responsible for establishing the foundational elements that empower various teams, including internal development tools, core services, reusable UI components, CI/CD processes, security integrations, public APIs, and our Apollo ingestion and event management system.In this role, you will set and uphold quality standards for our internal systems, ensuring adherence and compliance across teams. You will define both functional and non-functional quality benchmarks, translate these into actionable standards, and validate that our internal services consistently meet these criteria through reviews, gates, and operational signals.Key ResponsibilitiesLead the establishment of quality standards for internal systems encompassing reliability, performance, scalability, security, availability, observability, data integrity, and operational functionality.Collaborate with engineering teams to convert quality standards into service-level requirements and well-defined acceptance criteria for platform functionalities and internal services.Manage the compliance process: define measurement criteria, introduce evaluative evidence (tests, checks, dashboards), and initiate corrective actions when discrepancies arise.Conduct structured quality assessments for internal services, including design reviews, readiness evaluations, release criteria, and post-incident analyses that refine standards and checks.Establish and maintain quality gates within the CI/CD pipeline that uphold standards without hindering team productivity (including contract checks, smoke/regression tests, and security assessments as applicable).Define quality benchmarks for public APIs and platform adapters regarding contracts, backward compatibility, and versioning.

Join Capco as a Senior Software Development Engineer in Test (SDET) and play a pivotal role in revolutionizing the financial services landscape through cutting-edge automation. Based in London with a hybrid work model, you'll collaborate with a talented engineering team to tackle complex challenges, while enhancing your skills across innovative cloud-native technologies. Be part of high-impact projects that shape the future of finance and energy sectors.

Role Overview Position: Senior Software Developer in Test Location: London, UK (Hybrid: roughly one day per week in the office) Contract Type: Permanent, full-time Compensation: £70,000 - £80,000 base salary, plus 10% bonus, 10% shares, and additional benefits About Appvia Appvia delivers cloud solutions and platform engineering to help organizations modernize software systems, boost developer productivity, and adopt cloud-native practices. The team focuses on modern application development, domain-driven design, and improving delivery outcomes through strong architecture, testing, and developer experience. Appvia works with clients in complex, high-impact settings where quality, reliability, and scalability matter. The goal: help organizations ship better software, faster. What You Will Do This is a hands-on, client-facing role within the Solutions Engineering team. The main focus is to advance a large-scale modernization and AI-driven transformation initiative. The Senior Software Developer in Test (React/Java) will: Lead the shift from slow, fragile end-to-end testing to scalable integration, functional, and contract testing methods Guide teams in adopting modern testing and quality engineering practices for complex systems Introduce new tools and approaches to improve developer feedback loops and embed quality early in the software delivery lifecycle Work with greenfield initiatives within brownfield environments Report to a Principal Software Engineer and act as a senior quality engineering advocate within delivery teams Interview Process Discovery conversation with Talent Acquisition Technical interview with the Engineering Team Final interview with Leadership Security Clearance Requirements Eligibility for UK Government Security Clearance (SC) is essential. Candidates must meet the following criteria: Hold a British Passport or Indefinite Leave to Remain (ILR) Have lived in the UK for the past five years No criminal record or financial irregularities

Transform the Future of Finance with Us!At Light, we are on a mission to revolutionize the outdated ERP systems of the factory era with our dynamic Smart Financial Platform. We empower modern, global businesses with capabilities like automated accounting, real-time reporting, and agile financial flows that adapt to the pace of business.Our approach is collaborative; we develop alongside our customers, deliver swiftly, and are passionate about our craft. In a short span, Light has evolved from a concept to the backbone of renowned companies such as Lovable, Legora, and Keyshot. Users don’t just utilize Light—they truly enjoy the experience.As part of a pioneering team, we are defining a new category in software. Imagine engineers who are passionate about finance, designers who prioritize reconciliation, and operators who view finance as a product. If you are keen on modernizing the way the world manages money—one workflow at a time—you’ve found your place.Supported by top-tier investors and guided by industry leaders, we are creating groundbreaking products with the freedom to innovate boldly and take ownership of results. Join us in establishing Light as the global standard for next-gen finance.About the RoleAt Light, we are crafting the Global Financial Platform and our objective is to expand our engineering team rapidly. This growth hinges on our commitment to quality.You will be an integral part of the Foundation Team—the driving force that enhances our entire engineering organization. Our mission is to "build the factory that builds the product." As an SDET, your role will extend beyond merely writing tests for feature teams; you will be responsible for designing the internal quality infrastructure that empowers every engineer at Light to deliver with confidence.We seek a candidate who is passionate about test engineering as a discipline while being grounded in the realities of production systems. You will assist us in transitioning from ad-hoc testing to constructing robust frameworks, defining our internal quality standards, and enabling our teams to deploy multiple times daily, safely and confidently.

Join Capco as a Principal Software Development Engineer in Test (SDET) where you will lead the design, development, and implementation of automated testing frameworks. You will work closely with cross-functional teams to ensure the highest quality of software delivery while driving innovation and efficiency in testing methodologies.

Join Our Team as an Automation Software Test Engineer - £400 per day (6+ Months / Remote Work Available / Outside IR35)We are looking for a talented Automation Software Test Engineer to join our dynamic team working on an exciting greenfield project. In this role, you will collaborate closely with a small team of developers and UX designers in a friendly, non-corporate agency environment. Our flat organizational structure values contributions over titles, allowing for an innovative and flexible work atmosphere.Location·Option to work from London, Bristol, or Cornwall.·Full remote work flexibility.

Do you have the passion to drive innovation? Join AnyVan and revolutionize the way we move anything, anywhere while building a fulfilling career that accelerates with every challenge. Founded in 2009 by our visionary CEO Angus, AnyVan emerged from the need to optimize logistics by utilizing underused van space. Our mission is to transform logistics technology, dramatically reducing wasted journeys and carbon emissions. With over 150,000 five-star reviews and a customer base exceeding 5 million across the UK and Europe, we are proud to be the preferred choice for countless users. Our dedicated team of 400 AnyVanners, operating from London, Cape Town, and Bogota, is committed to reducing carbon emissions by 8,520 tonnes annually. Be at the forefront of logistics innovationAt the core of our operations is a cutting-edge optimization platform that seamlessly connects customer needs with real-time driver availability, enabling us to provide exceptional service at unbeatable rates.By efficiently matching jobs with drivers already on the road, we minimize unnecessary miles, reduce emissions, and ensure fair earnings for our drivers. It’s a complex interplay of logistics, pricing, and marketplace dynamics, all powered by advanced software.And this is just the beginning...As we embark on the next phase of development, we're transitioning our platform to a truly intelligent logistics marketplace. Your role will involve designing and building systems to:Accurately model job-level costs in real time, paving the way for smarter, more dynamic pricing strategies.Enhance our driver platform, integrating it deeper into their daily operations and unlocking new revenue streams.Establish a two-sided marketplace, facilitating the buying and selling of non-core jobs among drivers to optimize utilization.Scale efficiently as we grow in volume, complexity, and ambition.This position is ideal for engineers who thrive on tackling complex, high-impact challenges and shaping the evolution of a scalable platform.

Location: London Start date: Immediate The Role: Join AlphaSights as a Senior Test Engineer within our dynamic Software Engineering Team. In our digital-first organization, ensuring continuous uptime, exceptional product quality, and outstanding user experiences is paramount. This role presents a unique opportunity to make an immediate impact on our engineering efforts. You will collaborate closely with Software Engineering and Product Management, spearheading the design and execution of automated testing solutions that scale across our platform, guaranteeing reliability and quality across frontend, backend, and APIs. We seek a proactive, innovative, and collaborative individual who is committed to continuous improvement and team success. This hands-on leadership role involves not just developing and maintaining automated tests but also guiding Test Engineering strategies, establishing technical standards, mentoring QA team members transitioning to Test Engineering, and defining best practices for testing, quality, and reliability. In this fast-paced environment, you will maintain a positive, solution-oriented mindset while delivering flawless user experiences through robust test automation. In addition to working with teams based in London and Portugal, you will have the chance to engage with teams across EMEA, the US, and Asia. What You’ll Do: Lead the design and development of automated test plans, suites, and frameworks across multiple projects to ensure comprehensive test coverage and high-quality releases. Mentor and guide junior QA engineers, enhancing their automation skills and cultivating a culture of quality and best practices. Maintain and scale test automation infrastructure to support CI/CD pipelines, cross-platform validation, and rapid feedback loops. Perform targeted manual testing, including exploratory testing, edge-case validation, and UI/UX verification when necessary. Collaborate closely with Engineering and Product teams to define test strategies, acceptance criteria, and testing priorities for complex features. Drive cross-team initiatives that enhance overall testing practices.

Alten is seeking a Software Test Integration and Automation Engineer to join its team in London. This role supports software quality and reliability across projects in the space sector. Key responsibilities Design and develop automated test suites for software products Collaborate with cross-functional teams to embed testing into development workflows Support continuous improvement of testing processes and product quality Location This position is based in London.

Join Version 1 as a Senior Performance Testing Engineer where you will leverage your expertise in performance testing to ensure the robustness and efficiency of our digital solutions. We are seeking a skilled professional who can design and implement performance tests, analyze results, and provide actionable insights to enhance system performance.Your role will involve collaborating with cross-functional teams to identify performance issues and recommend enhancements. You will utilize various performance testing tools and frameworks, ensuring that our applications meet the highest standards of quality and performance.

Are you a talented Software Engineer in Test, Test Engineer, or Test Analyst who excels in manual testing while embracing the challenges of automation testing? Join our agile team at Version 1, where you'll play a vital role in assisting clients with their business transformation initiatives. Your expertise will be instrumental in identifying requirements, crafting innovative solutions, and offering continuous guidance and support in testing.In this role, you will:Define and execute comprehensive test strategies and scriptsAccurately record and monitor issues for effective resolutionSupport scrum teams in automating tests to streamline development processesReview test environments and processes to drive continuous improvement and uphold quality standardsProvide precise test estimates to aid project planning

Join our innovative team at getscope as a Senior Software Engineer. In this pivotal role, you will design, develop, and implement cutting-edge software solutions that will drive our projects forward. Collaborate with cross-functional teams to translate business needs into technical requirements while ensuring high quality and performance of applications.

Role Overview Allye Energy is hiring a Test and Commissioning Engineer focused on electrical and software systems. This position is based in London and centers on testing and commissioning advanced energy solutions to ensure strong performance and reliability. What You Will Do Oversee the testing and commissioning process for energy systems, with attention to both electrical and software components. Work closely with designers and project managers to support smooth project delivery. Help optimize energy systems to improve sustainability and operational efficiency. About Allye Energy Allye Energy develops innovative solutions in the energy sector, with a focus on reliability and sustainability.

Join Palantir Technologies as a Senior Backend Software Engineer and contribute to our innovative application development team. You will design and implement robust backend systems that are scalable and efficient, working alongside talented engineers in a collaborative environment.

About the PositionWe are seeking a highly skilled and motivated Senior Software Engineer - Generalist to join our innovative team at Anza. This role is pivotal in enhancing our Agave client and the overarching Solana network, focusing on performance, reliability, and security.About UsAnza is a cutting-edge R&D lab focused on the Solana blockchain, dedicated to revolutionizing blockchain performance and scalability. With a team of seasoned executives and core engineers, we tackle the most pressing challenges in the Web3 space. We believe in the power of collaboration and transparency, building robust protocols that can support the crypto ecosystem's growth and security.Your ResponsibilitiesDevelop and optimize our technical infrastructure, particularly the Agave client within the Solana ecosystem.Design and implement testing frameworks to simulate adversarial attacks and proactively identify vulnerabilities.Analyze performance metrics to pinpoint and resolve bottlenecks.Collaborate with subject matter experts to understand and define performance requirements for code components.Benchmark new solutions to enhance system reliability and performance.Work alongside cross-functional teams to architect solutions focused on scalability, security, and optimal performance.Contribute to all stages of the software development lifecycle, ensuring seamless transitions through development, staging, and production.Document architecture and processes to promote standardization and knowledge sharing across teams.

Join our dynamic team at System Canada Technologies as a Test Analyst or Senior Test Analyst. This is an exciting opportunity for individuals who are passionate about quality assurance and eager to contribute to innovative projects in a collaborative environment.

Join Multiverse as a Senior Software Engineer specializing in Platform Engineering. In this pivotal role, you will leverage your expertise to design, build, and enhance our platform, ensuring it meets the highest standards of performance and reliability. Collaborate with cross-functional teams to deliver robust solutions that drive the success of our innovative programs.

Role overview The Senior Software Engineer I at Runna will play a key part in shaping how users interact with the company’s products. The work centers on designing, developing, and maintaining applications that support a strong user experience. Expect to take a hands-on approach, working closely with colleagues from different teams to deliver solutions that scale and perform reliably. Location This role is based at the Runna office in London.

Join our innovative team at AECOM as a Senior Software Engineer, where you will play a critical role in designing and developing cutting-edge software solutions. You will collaborate with cross-functional teams to bring complex projects to fruition, ensuring high quality and performance standards are met.