1 to 25 of 40 Unit Testing Jobs in London

platforms and ways of working, we’re also re‐introducing what "good" looks like for quality at Holland & Barrett. We’re moving from traditional testing approaches towards a modern, engineering‐led quality strategy: unit testing, contract testing, component testing, integration testing, E2E flows, synthetics … Design, build, and maintain scalable automation frameworks that are easy for engineers to use and extend. Partner with teams to introduce modern microservices testing approaches across unit, contract, component, integration and E2E layers. Lead the shift toward engineers owning their tests by providing guidance, examples, and hands ...

evolving codebase with technical debt and business‐critical logic Set up and use multiple AI agents or agentic workflows to accelerate requirements analysis, implementation, testing, refactoring, unit testing, and documentation Review and strengthen AI‐generated output rather than relying on it blindly Write maintainable, production‐grade code … generated outputs through prompt iteration and workflow design Experience in both creating new systems and improving established ones Strong understanding of APIs, databases, testing, debugging, and system design Experience setting up and operating multiple AI agents or agentic workflows across requirements analysis, code generation, refactoring, code review, testing ...

collaborate daily with product, engineering, analytics and data partners to ship the right thing. Own the whole experience: from shaping the solution to implementing, testing, releasing and watching it succeed in production. Raise the bar: through great testing, thoughtful reviews, and feedback that makes the whole team better. … designing data models for correctness and performance. Experience building distributed and concurrent systems (e.g., Kafka or equivalent). Strong engineering fundamentals: testable code, unit + integration testing, and pragmatic testing strategies. Clear communication: able to explain technical decisions to non-technical partners. A product mindset: you prioritise ...

Spring Boot. · Develop and maintain scalable, high-performance microservices. · Integrate microservices with various databases, APIs, and third-party services. · Ensure high-quality code through unit testing, code reviews, and continuous integration. · Identify and resolve performance issues, bugs, and other technical challenges. · Create and maintain technical documentation for Java … with SQL databases e.g., MySQL, PostgreSQL, Oracle · DevOps: Familiarity with DevOps tools and practices, including Jenkins, Azure DevOps, Git and CI/CD pipelines. · Unit Testing: Expertise in writing unit tests using frameworks like JUnit and Mockito. · Version Control: Proficiency with version control systems, particularly Git. ...

cloud-native applications · Good understanding of software architecture, clean code principles, design patterns, secure coding practices, and Test-Driven Development (TDD) methodologies. · Experience with unit testing, integration testing, functional testing, and automated test execution · Familiarity with test frameworks and automated testing tools used within … Context Protocol tools and agent tool integration · Experience creating reusable software factory or platform engineering capabilities · Familiarity with DevSecOps, secure SDLC, and automated security testing · Experience building RAG-based systems or integrating AI agents with knowledge bases · Knowledge of enterprise data privacy, responsible AI, and AI governance controls · Experience ...

cloud-native applications · Good understanding of software architecture, clean code principles, design patterns, secure coding practices, and Test-Driven Development (TDD) methodologies · Experience with unit testing, integration testing, functional testing, and automated test execution · Familiarity with test frameworks and automated testing tools used within … agent tool integration · Experience creating reusable software factory, internal developer platform, or platform engineering capabilities · Familiarity with DevSecOps, secure SDLC, and automated security testing · Experience building RAG-based systems or integrating AI agents with enterprise knowledge bases · Knowledge of enterprise data privacy, Responsible AI, and AI governance controls · Experience ...

overall user experience. You’ll be the final checkpoint before release, helping guarantee that everything delivered meets the highest standards. Responsibilities Perform comprehensive manual testing of frontend applications Perform functional and regression testing to ensure product stability across releases Identify, analyze, reproduce, and document bugs with clear detail … product mockups and requirements during early development stages Collaborate closely with developers, designers, and product/project managers Contribute to end-to-end (E2E) testing efforts covering critical user journeys Support and gradually expand test automation coverage where applicable What makes you the perfect fit Minimum 2 years ...

traditional, strategic leadership position. You will not be executing manual scripts; instead, you will have complete ownership of the end-to-end testing lifecycle. Stepping in during the critical Design Phase, your primary focus will be defining the overarching test strategy, structuring detailed master test plans, and managing program … countries. Key Responsibilities Architect and deliver robust test strategies and detailed planning frameworks tailored for a global footprint. Take end-to-end accountability for testing quality gates, including Configuration Unit Testing, System Integration Testing (SIT), E2E, User Acceptance Testing (UAT), and Performance Testing. Bridge ...

traditional, strategic leadership position. You will not be executing manual scripts; instead, you will have complete ownership of the end-to-end testing lifecycle. Stepping in during the critical Design Phase, your primary focus will be defining the overarching test strategy, structuring detailed master test plans, and managing program … countries. Key Responsibilities Architect and deliver robust test strategies and detailed planning frameworks tailored for a global footprint. Take end-to-end accountability for testing quality gates, including Configuration Unit Testing, System Integration Testing (SIT), E2E, User Acceptance Testing (UAT), and Performance Testing. Bridge ...

traditional, strategic leadership position. You will not be executing manual scripts; instead, you will have complete ownership of the end-to-end testing lifecycle. Stepping in during the critical Design Phase, your primary focus will be defining the overarching test strategy, structuring detailed master test plans, and managing program … countries. Key Responsibilities Architect and deliver robust test strategies and detailed planning frameworks tailored for a global footprint. Take end-to-end accountability for testing quality gates, including Configuration Unit Testing, System Integration Testing (SIT), E2E, User Acceptance Testing (UAT), and Performance Testing. Bridge ...

NoSQL databases (e.g., MongoDB, Cassandra) is a plus. Exposure to cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes) is desirable. Experience with unit testing, integration testing, and test automation frameworks (JUnit, Mockito). Experience working in Agile/Scrum development environments. Practical experience with Python ...

designing and implementing APIs (REST/JSON) Solid understanding of application architecture, performance, and scalability Experience with SQL databases (e.g. SQL Server) Familiarity with unit testing, integration testing, and CI/CD pipelines Financial Services Domain Knowledge (Essential) Experience working in Financial Services technology environments Strong domain ...

frameworks (e.g., Spring, Spring Boot, Quarkus).Experience designing, building, and maintaining large-scale, distributed systems.- Experience with RESTful API design and implementation.- Experience with unit testing, integration testing, and test automation frameworks (e.g., JUnit, Mockito).- Experience working in Agile/Scrum development environments.- Practical experience with ...

responsibilities. Key Responsibilities Design, implement, and maintain the platform and services supporting Motilent’s imaging analysis and visualisation platform. Define and implement automated testing and verification processes for the platform and its services. Contribute to the definition and evolution of Motilent’s platform architecture. Design, implement, and maintain Continuous … OAuth 2.0 and OpenID Connect (OIDC). Understanding of Agile software development, CI/CD pipelines, and version control systems (Git). Knowledge of unit testing, software verification, and design patterns. Nice to Have Advanced proficiency in Java and Gradle. Experience developing microservices using Spring Boot within containerised ...

culture of technical excellence and growth. Adhere to secure coding practices to mitigate vulnerabilities, protect sensitive data, and ensure secure software solutions. Implement effective unit testing practices to ensure proper code design, readability, and reliability. Responsibilities Design and build scalable C# (.NET/.NET Core) and Python‐based ...

Software Development: Design, develop, test, and deploy high‐quality, scalable, and maintainable code. Quality Advocacy: Promote best practices for engineering excellence in coding, testing, build, deployment, and maintenance of high‐quality software. Solution Implementation: Act as an active contributor to design and a hands‐on implementer of code. Agile … added advantage. Experience with OpenShift, Docker, and Kubernetes. Understanding of build and deployment tools like Jenkins, Tekton, UDeploy, Harness, NPM, Maven, Gradle. Implement unit testing and TDD to ensure software quality and maintainability. Proficiency in SQL databases, MongoDB, Oracle preferred. Nice to have Experience on observability and monitoring ...

required by global company for an initial 12-month contract. The successful candidate will have experience with detailed design, development, implementation, integration, and testing of software in C# to build windows/web-based applications. The ideal contractor would have experience in software development in C# (.NET Core 2.1+ … Experience of using version control (GIT), change control and code quality control/review processes. Experience of working in SCRUM environments where regular builds, unit tests and integration testing are the norm. Can contribute to these activities. Familiar with common modelling/design approaches - UML. Successful candidates will ...

required by global company for an initial 12-month contract. The successful candidate will have experience with detailed design, development, implementation, integration, and testing of software in C# to build windows/web-based applications. The ideal contractor would have experience in software development in C# (.NET Core 2.1+ … Experience of using version control (GIT), change control and code quality control/review processes. Experience of working in SCRUM environments where regular builds, unit tests and integration testing are the norm. Can contribute to these activities. Familiar with common modelling/design approaches - UML. Successful candidates will ...

electronic information to all the financial markets across the globe. This role involves full lifecycle Agile development, including requirements analysis, estimation, design, coding, testing, and peer code reviews. You’ll contribute to service improvement initiatives alongside development and support tasks, and coordinate with a range of technology and business … experience with software development principles Extensive experience delivering enterprise level software using Java. Extensive experience and understanding of OO, MVC, REST, Web API and Unit testing frameworks. Good knowledge of relational and/or nosql databases (PostgreSQL & DynamoDB experience is advantageous) Expert practitioner of test-driven development, agile ...

Software Development: Design, develop, test, and deploy high-quality, scalable, and maintainable code. Quality Advocacy: Promote best practices for engineering excellence in coding, testing, build, deployment, and maintenance of high-quality software. Solution Implementation: Act as an active contributor to design and a hands-on implementer of code. Agile … advantage. Experience with OpenShift, Docker, and Kubernetes. Understanding of build/deployment tools like Jenkins, Tekton, UDeploy, Harness, NPM, Maven, Gradle. Implement unit testing and TDD to ensure software quality and maintainability. Proficiency in SQL databases, MongoDB, Oracle. Nice to have: Observability and monitoring tech stack familiarity. Understanding ...

NoSQL technologies Experience of API design Cloud development/architecture (Azure) Experience working in an Agile environment (Scrum/Kanban) Knowledge and experience of Unit Testing (xUnit, nUnit) Experience integrating AI/LLM capabilities into back-end services (e.g. OpenAI, Azure OpenAI, or similar APIs) Desired Skills/ ...

analysis in high availability environments. Perform SQL and XML based troubleshooting, configuration, data validation and continuous improvement. Conduct SIT and UAT support, defect resolution, unit testing and production bug fixes. Collaborate with Product Owners, cross platform teams and third party vendors on requirements, story creation and SLA compliance. ...

Apps, Service Bus) for scalable integrations Perform data migrations and integrations using tools like KingswaySoft, SSIS, or Dataflows Ensure code quality through code reviews, unit testing, and debugging Collaborate with stakeholders, business analysts, and cross-functional teams to gather requirements and deliver solutions Support CI/CD pipelines ...

Apps, Service Bus) for scalable integrations Perform data migrations and integrations using tools like KingswaySoft, SSIS, or Dataflows Ensure code quality through code reviews, unit testing, and debugging Collaborate with stakeholders, business analysts, and cross-functional teams to gather requirements and deliver solutions Support CI/CD pipelines ...

test, and deploy Apex code (classes, triggers, and components) to extend Salesforce functionality. Participate in the full software development lifecycle, including requirements gathering, development, testing, deployment, and maintenance. Implement and maintain robust DevOps practices, including source code management, branching strategies, pull requests, and commits. Utilize DevOps tools such … documentation, including design specifications, code comments, and user guides. Provide technical support and troubleshooting for Salesforce applications. Adhere to best practices for Apex, Flows, Unit Testing and participate in peer reviews to ensure code quality and system integrity. Required Skills and Experience: 5+ years of hands-on experience ...