Backend Software Engineer - Application Development

Transform the Future of Finance with Us!At Light, we are on a mission to revolutionize the outdated ERP systems of the factory era with our dynamic Smart Financial Platform.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.

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.

Join PlayStation as a Senior Software Development Engineer in Test and play a crucial role in enhancing our SDK's quality engineering framework. You'll design and implement robust CI/CD pipelines, develop automation tools in Python, and create automated tests across various system layers. Collaborate with cross-functional teams to improve workflows and ensure seamless delivery across multiple platforms. This role demands a strong technical background, collaboration skills, and a drive for impactful results in a dynamic environment.

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.

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

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.

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.

About Swap Swap builds the infrastructure for modern agentic commerce. The platform connects backend operations with a new kind of storefront, using AI to help brands manage and grow their business globally. Swap’s platform brings together cross-border operations, tax management, returns, demand forecasting, and a storefront powered by agentic technology. Merchants get real-time data, transparency, and tools to act quickly and decisively. The company values clarity, creativity, and shared ownership as it rethinks how global commerce works. Role Overview: Staff Software Engineer in Test – QA Platform Lead Swap is hiring a Staff Software Engineer in Test to lead the development of its internal QA Platform. This role focuses on building the tools and infrastructure that help engineering teams ship reliable software, faster. The QA Platform Lead will design, build, and maintain the internal platform, including frameworks, automation pipelines, and AI-assisted workflows, that Swap engineers rely on every day. The impact of this work will be measured by how widely the platform is adopted, the developer experience, and the speed at which teams can deliver quality software. Collaboration is key. The role works closely with the current SDET, who created the existing end-to-end testing framework. Together, you’ll expand on this foundation and shape a broader platform vision. The QA Platform Lead will set strategy, manage the roadmap, and make decisions about priorities and architecture. Main Responsibilities QA Platform Strategy and Roadmap Define the vision, strategy, and roadmap for the QA Platform, setting priorities that maximize impact. Make architectural and tooling decisions that influence quality practices across Swap’s engineering teams. Track adoption, usage, and developer satisfaction to ensure the platform is used and valued, not just built. Develop Reusable Quality Tools and Infrastructure Design and implement reusable tools, frameworks, and self-service quality infrastructure to help engineering teams deliver with confidence and less friction. Location This role is based in London.

Role overview Version 1 is looking for a Test Automation Engineer to help strengthen software development and quality assurance across projects. This role focuses on building and maintaining automation frameworks to support reliable software delivery. What you will do Develop and maintain automated test scripts and frameworks Apply testing methodologies to ensure software meets quality standards Work closely with developers and other team members to identify and resolve issues Contribute to process improvements that support efficient, high-quality releases Collaboration and impact This position offers the chance to work alongside experienced professionals and use modern technologies. Test Automation Engineers at Version 1 play a direct role in shaping project outcomes and supporting client success. Location Offices are located in London, Birmingham, Manchester, Newcastle upon Tyne, Edinburgh, and Belfast.

Join our innovative team at Meticulous, where we are revolutionizing the software development landscape. Our mission is to significantly accelerate software development processes through our unique technology.At Meticulous, we are experiencing rapid growth, with leading companies like Dropbox, Wiz, and Notion embracing our tool at an unprecedented rate. Our compact team is composed of some of the most talented engineers globally, allowing us to create advanced technology that autonomously and thoroughly tests frontend codebases.This capability is groundbreaking; it is underpinned by innovative technologies and research that set us apart from competitors. Our product's demand is soaring, and many customers are willing to invest more in Meticulous than any other software solution, often recommending us spontaneously to their networks.We believe that autonomous, exhaustive testing is essential to unlocking the full potential of code generation and automating a significant portion of the software development lifecycle.Based in London, our team of ten is dedicated to building a small, highly skilled workforce. We are currently hiring for this position in London and are also considering launching Forward Deployed Engineering roles in San Francisco soon. If you are interested in either opportunity, we encourage you to apply.Key Responsibilities:Design and develop a distributed system capable of simultaneously replaying thousands of sessions, delivering results to developers in mere seconds.Integrate Meticulous into the core of autonomous code generation, creating a coding agent that surpasses current capabilities by establishing a feedback loop to assess the exhaustive impact of every modification.Innovate algorithms to identify sessions that explore diverse code paths and edge cases, while filtering out overly similar sessions.Collaborate directly with engineering leaders from top tech companies to facilitate the deployment of Meticulous across their platforms.

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

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 dynamic and motivated Mid-Level Test Engineer within our Software Engineering Team. As a digital business, we prioritize continuous uptime, product quality, and exceptional user experience. This role is a crucial opportunity to make an immediate impact on our product development. Collaborating closely with Software Engineering and Product Management, your focus will be on designing and implementing automated testing solutions that ensure our applications are reliable, scalable, and adhere to the highest standards across frontend, backend, and APIs. In this position, you will be entrusted with specific areas of responsibility and expected to manage your time effectively. A positive, problem-solving mindset is essential, as is a passion for delivering seamless user experiences through robust test automation in a fast-paced environment. We seek a proactive and creative individual who enjoys collaboration and is dedicated to both personal growth and team success. You will have opportunities for on-the-job and classroom-based learning, diving into the field of IT with exposure to various technologies, regions, and challenges. Working primarily with teams in London and Portugal, you will also engage with colleagues from other offices across EMEA, the US, and Asia. What You’ll Do: Design and develop automated test plans and suites for various projects, validating software functionality and ensuring comprehensive regression coverage. Develop and maintain automated testing frameworks and infrastructure, providing tools for developers to test their own code. Lead test automation initiatives and conduct targeted manual testing as needed, such as exploratory testing, UI validation, and edge case verification. Create, manage, and maintain test data to support automated testing across environments, ensuring consistency and reproducibility of results. Support robust testing through API test automation, test data management, and cross-platform validation across browsers and devices. Collaborate with cross-functional teams to enhance product quality and user experience.

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.

At Zaizi, we are on the lookout for a dedicated Senior QA Test Engineer who possesses a genuine enthusiasm for technology and a strong analytical mindset. This role requires exceptional communication skills as it involves direct interaction with clients and hands-on learning within their projects. We believe in nurturing talent and are committed to providing you with the necessary skills to advance your career in quality assurance.Our company culture is inclusive, innovative, and supportive, fostering an environment where positive thinkers thrive. We value individuals who challenge themselves to excel in their roles, and if you resonate with this ethos, you'll find a welcoming home at Zaizi!This position is primarily remote, with the possibility of onsite client engagements as needed and occasional travel to our London headquarters for meetings and workshops.Key Responsibilities: Design and implement automation frameworks from the ground up, including Web Services/API, performance, and accessibility testing within a DevOps CI/CD setup. Provide insightful solutions to clients as necessary. Oversee, plan, and execute exploratory and automation testing throughout the project lifecycle. Identify, document, track, and resolve quality issues and defects using a defect tracking system. Take full ownership of the release process to ensure effective product delivery. Collaborate closely with developers, junior test engineers, and cross-functional scrum team members to enhance test coverage and eliminate bottlenecks. Maintain and update regression test suites as products evolve. Work collaboratively in a DevOps-oriented environment. Qualifications:Skills & Attributes:Proficient in Cypress for test automationExperience in API testing using Rest Assured or PostmanFamiliarity with performance testing tools such as JMeter or equivalentExcellent communication skills for effective collaboration with team members and clientsExperience in Agile methodologiesA genuine passion for IT and emerging technologiesBasic knowledge of AWS is a plusNot meeting all the qualifications?We encourage applicants from all backgrounds to apply, even if you don’t meet all the criteria. Studies indicate that underrepresented groups, including women and people of color, may hesitate to apply unless they meet every qualification. If you are excited about this opportunity, we would love to hear from you, as you could be the perfect fit for this or another role at Zaizi.Security Clearance:As Zaizi partners with UK Central Government departments on various projects, candidates must obtain security clearance that meets government standards. Therefore, we can only consider individuals who have the right to work in the UK without sponsorship.

Join Zaizi as a Test Engineer, where your enthusiasm for technology and detail-oriented problem-solving will be highly valued. This position involves direct interaction with clients, making strong communication skills a must. You will gain hands-on experience while contributing to client projects, and we are committed to helping you develop your professional skills.At Zaizi, our work culture is inclusive, modern, and collaborative. We seek bright, positive thinkers with a proactive attitude who are eager to excel in their roles. If this resonates with you, you will thrive in our environment!This role is primarily remote, with occasional on-site client work and travel to our London headquarters for workshops and meetings.

Join ubds as a Test Manager where you will lead the testing team in ensuring the highest quality of our software products. You will be responsible for developing test strategies, implementing best practices, and mentoring team members while collaborating closely with other departments to deliver exceptional results.