26 to 50 of 194 Integration Testing Jobs in London

Java Full Stack Developer

Hiring Organisation
Citigroup
Location
London, England, United Kingdom
ownership from backend services up to user-facing web tools.We actively embrace GenAI-assisted engineering (Devin, GitHub Copilot, Cursor) to automate boilerplate, accelerate unit testing, and achieve high engineering velocity.Key Responsibilities:Backend Microservices: Design, build, and maintain production-grade REST APIs and microservices using Java 21/… development experience with core focus on Java (21/25) and Spring/Spring Boot.Strong foundation in RESTful API design, microservice architecture, and enterprise integration patterns.Deep expertise in relational databases (SQL), schema design, data indexing, transactions, and performance tuning (PostgreSQL, Oracle, or MySQL).Solid experience building data ingestion, transformation ...

Customer Integration Engineer - Gaming Platforms

Location
London, United Kingdom
Customer Integration Engineer - Gaming Platforms Location: Crawley, West Sussex Working Model: Hybrid Employment Type: Permanent Travel: Occasional travel to customers, internal sites and industry events About the Role We are looking for a Customer Integration Engineer to join a growing Customer Engineering team supporting the adoption of specialist … solutions across EMEA and other strategic markets. This is not a traditional technical support role. You will work directly with customers throughout the full integration journey, from initial evaluation and onboarding through to integration and production readiness. You will troubleshoot complex technical challenges, deliver technical demonstrations and workshops ...

Technical Onboarding & Payments Support Specialist

Location
Greater London, England, United Kingdom
introducers who make an introduction and step away. We’re hands‐on operators who stay involved from the first conversation through onboarding, integration, compliance, corporate structuring, licensing, and ultimately live processing. As part of our infrastructure, FinSet provides clients with access to our gateway and orchestration platform, which connects … Role We are looking for a Technical Onboarding & Payments Support Specialist to own the technical support side of our client journey—from initial gateway integration and sandbox testing through launch and ongoing live processing. You will be the primary technical point of contact for our merchants and will ...

Development Team Lead(.NET)

Location
Greater London, England, United Kingdom
enhancement of existing WCF-based applications and the strategic modernization of those platforms to ASP.NET Core and cloud-ready architectures.* Evaluate and implement modern integration patterns using **REST APIs, microservices, Azure Service Bus, and cloud-native services** as part of application modernization initiatives.* Perform and enforce high‐quality code … clean architecture, and SOLID principles.* Break down complex technical requirements into well‐scoped stories and tasks.* Work with Architects to align on technical patterns, integration approaches, and long‐term platform direction.**People Leadership & Coaching*** Provide day‐to‐day support, mentorship, and coaching to developers across varying experience levels.* Foster ...

Senior Python Developer/ Engineer

Location
City of Westminster, England, United Kingdom
requirements into robust technical solutions. Design and implement integrations with internal client systems and external third-party APIs using REST, webhooks, and event-driven integration patterns. Apply software engineering best practices, including SOLID principles, Clean Architecture, Repository Pattern, Factory Pattern, Strategy Pattern, Dependency Injection, and other design patterns … dead-letter queues, and asynchronous messaging. Work within established development and release processes to ensure high-quality software delivery. Contribute to code quality, automated testing, performance optimization, and system reliability improvements. Support CI/CD deployment pipelines and collaborate with DevOps teams to ensure smooth and reliable application delivery. ...

Software Developer Analyst

Location
Greater London, England, United Kingdom
areas of health, safety, economic wellbeing, education and power.The IT department provides end-to-end technology solutions for the organization, including Application Development, Integration and Management, Enterprise Architecture, User Experience, Quality Assurance & Testing, and overall Product Management. While this role sits within IT, its focus is on partnering … development processes including pair programming, shadow sessions, code reviews and other strategies to ensure high-quality programing.* Strong code quality assurance practices including unit testing, integration testing, as well as regression testing to ensure quality of the code getting shipped into production.* Working knowledge of agile ...

Datasphere Tester

Location
Greater London, England, United Kingdom
services, AI/ML Technologies and Professional services in the UK and EU market. Job Description We are seeking a highly skilled SAP Datasphere Testing Consultant with strong expertise in data modelling, HR domain processes, and SuccessFactors integration. The ideal candidate will possess hands‐on experience in validating … Datasphere components, ensuring data accuracy, governance, and seamless integration across HR systems and analytics platforms. Key ResponsibilitiesSAP Datasphere Testing Perform end-to-end testing of SAP Datasphere components including: Spaces, Connections, Data Flows, Views, and Analytical Models. Semantic modelling, business layer definitions, and metadata structures. Validate data ...

Mid/Senior Data Engineer

Location
Greater London, England, United Kingdom
processes, improve reporting confidence and establish repeatable data foundations across enterprise systems. Bringing strong hands‐on experience in data profiling, cleansing, mapping, reconciliation and integration across complex business systems, ideally with exposure to procurement, workforce, finance, ERP or source‐to‐pay data. You should be comfortable working iteratively with … reused as part of an enduring data governance model. Experience implementing and advocating for test‐driven development methodologies in data pipeline workflows, including unit testing, integration testing, and data quality validation frameworks Proven experience leading technical aspects of data projects Strong data architecture and modelling skills with ...

Senior Software Engineer (.NET)

Location
Greater London, England, United Kingdom
experienced engineers through code review, pairing and technical guidance, helping them grow their skills Championing engineering best practice, clean code, and thorough unit and integration testing across your project team Working as a senior member of a cross-functional scrum team, contributing to technical decisions, estimation and planning … supporting less experienced engineers, through code review, pairing or technical coaching Have deep experience with engineering best practice, clean code and a strong testing culture, including unit and integration testing Have cloud experience using AWS or Azure (Azure is especially common on .NET stacks) - the specific provider ...

OSS Solution Architect - Orchestration & Cloud (London)

Location
Greater London, England, United Kingdom
Over the years we have applied this model to a full range of services - both technical and business. Our IT services such as application integration, testing, maintenance and infrastructure management ensure your operations are fully optimized. Our business process outsourcing and management services, such as customer service delivery … Over the years we have applied this model to a full range of services - both technical and business. Our IT services such as application integration, testing, maintenance and infrastructure management ensure your operations are fully optimized. Our business process outsourcing and management services, such as customer service delivery ...

Senior Software Test Engineer (SDET) – London – Permanent

Location
Greater London, England, United Kingdom
Engineer (SDET) to join a growing technology team developing modern software products. This is an engineering-led role focused on building and maintaining automated testing solutions rather than traditional manual QA. You’ll work closely with developers, product teams and DevOps engineers to improve software quality, automation coverage … delivery confidence. Senior Software Test Engineer Responsibilities Include: Designing and developing automated test frameworks using Playwright and TypeScript Automating UI, API and integration testing Integrating testing into CI/CD pipelines Supporting quality across cloud-native and microservices-based applications Collaborating with developers to embed quality throughout ...

Senior Java Developer (AWS, Microservices) – Sussex

Location
Greater London, England, United Kingdom
RESTful APIs. Exposure to SOAP and GraphQL services. Familiarity with CI/CD pipelines (e.g., Jenkins, GitHub Actions, AWS CodePipeline). Knowledge of unit testing, integration testing, and automation testing. Awareness of security best practices, OAuth2/JWT authentication. Awareness of SQL & NoSQL (Opensearch). Familiarity with ...

Unit 4 Consultant

Hiring Organisation
Pigment Consulting
Location
London, United Kingdom
Employment Type
Contract
with other consultancies, government departments, and private sector organisations to deliver complex change programmes across the public sector. We are seeking an experienced Unit4 Integration Consultant with strong, hands-on Accounts Payable (AP) experience to deliver an end-to-end finance systems integration involving Unit4 and Eye-share. … will take ownership of the technical design, integration specifications, configuration, testing and controlled deployment of the solution. Working closely with finance stakeholders, technical teams and the client, you will ensure invoice processing, financial data and system integrations operate reliably across the connected platforms. Key Responsibilities Low-Level Design ...

Lead Software Engineer - Linux Platform Validation Engineer

Location
Greater London, England, United Kingdom
London, Greater London, EC4Y 0JP, GB Job Schedule Full time Job Description Drive quality, compatibility, and release readiness for hardened RHEL platforms through automated testing, integration validation, and modern engineering practices across virtualized and containerized environments. About the Role As a Lead Linux Platform Validation Engineer, you will … help shape the quality and reliability of enterprise Linux platforms that support critical business services. You will build automated validation frameworks, integration testing capabilities, and release assurance processes that enable hardened RHEL platforms to be delivered confidently across physical, virtualized, and containerized environments. Working across platform engineering, automation ...

Oracle Test Manager

Location
Greater London, England, United Kingdom
Hybrid, 2 days a week in London. The Opportunity We are seeking an experienced Finance Transformation Test Lead to lead end-to-end testing for a major global finance transformation programme implementing Oracle Fusion ERP and EPM. You will be responsible for developing the testing strategy, overseeing execution … teams, you will play a key role in ensuring quality, managing risks and supporting critical programme decisions. Key Responsibilities Develop and lead the overall testing strategy across Oracle Fusion ERP and EPM. Manage System Integration Testing (SIT), User Acceptance Testing (UAT), regression testing, cutover rehearsals ...

Associate Manager - Endur Business Analyst (Commodity Trading Industry)

Location
Greater London, England, United Kingdom
impact assessments and supporting target-state process design and business transformation initiatives. Supporting Endur and broader trading platform implementation, upgrade and migration programmes. Supporting testing activities, including system integration testing, user acceptance testing and defect triage. Supporting data migration, reconciliation, cutover planning and business readiness activities. … business processes, operational challenges and platform capabilities to identify opportunities for optimisation and continuous improvement. Providing clear business context and requirements to architects, developers, integration specialists and testing teams. Managing stakeholder relationships across business, IT and programme leadership teams. Collaborating with sales and solutioning teams to support proposals. ...

Associate Manager - Endur Business Analyst (Commodity Trading Industry)

Location
City Of London, England, United Kingdom
impact assessments and supporting target-state process design and business transformation initiatives. Supporting Endur and broader trading platform implementation, upgrade and migration programmes. Supporting testing activities, including system integration testing, user acceptance testing and defect triage. Supporting data migration, reconciliation, cutover planning and business readiness activities. … business processes, operational challenges and platform capabilities to identify opportunities for optimisation and continuous improvement. Providing clear business context and requirements to architects, developers, integration specialists and testing teams. Managing stakeholder relationships across business, IT and programme leadership teams. Collaborating with sales and solutioning teams to support proposals. ...

Control Systems Engineer (LV Management)

Hiring Organisation
UK Power Networks
Location
London, England, United Kingdom
post holder will work across the full application lifecycle, including system configuration, software deployment, Linux server administration, scripting and automation, troubleshooting, GIS–ADMS model integration, data quality, data mastery, system integration, testing, and change management activities. The role will help the delivery of new functionality, upgrades, interfaces … fixes and new functionality in accordance with business and operational requirements.Investigate, diagnose and resolve application, database and system issues affecting operational services.Participate in application testing, user acceptance testing and operational readiness activities.Help major projects involving new control system capabilities, integrations and technology deployments.GIS–ADMS Integration DeliveryDesign, configure ...

Senior Java Developer

Hiring Organisation
Ncounter
Location
London, UK
Employment Type
Full-time
JavaMulti-threading, concurrency and Low-latency experienceExposure to Kotlin as well as Strings, Memory Management and associated problems a plusAutomated test experience, Unit testing and Integration testingAn understanding of message-driven programming and messaging systemsExperience with FIX and Kafka a huge plusTo excel in this role, you will … threading, concurrency, and low-latency is essential, as well as exposure to Kotlin, Strings, Memory Management, and associated problems. Automated test experience, including unit testing and integration testing, is also required. An understanding of message-driven programming and messaging systems, along with experience in FIX and Kafka ...

Electronics Technician

Hiring Organisation
Saab UK
Location
London, England, United Kingdom
over the world and is part of the domestic defence capability of several nations. The Role: To provide technical support for the assembly, integration, testing, maintenance and repair of electronic and electromechanical systems, ensuring high standards of quality, safety and workmanship are maintained whilst supporting laboratory, development … production activities. Key Responsibilities: Manufacture and assemble electronic and electromechanical systems, including wiring harnesses, PCBAs, mechanical assemblies and associated hardware. Carry out inspection, testing, integration and commissioning of electronic and electromechanical assemblies in accordance with approved procedures and documentation. Diagnose, troubleshoot and repair faults within electronic, electrical ...

Digital Transformation Programme Manager

Location
London Borough of Southwark, England, United Kingdom
tier model: Tier 1 – Software as a Service (SaaS) membership platform to be used by u3as. Tier 2 – Middleware: a custom-built, Trust-owned integration layer. Tier 3 – Trust SaaS platforms for CRM, finance, events and communications. Job Purpose The Digital Transformation Programme Manager will lead … suppliers and the Digital Transformation Partner, monitoring performance against agreed milestones and contracts. Work with staff and volunteers to confirm requirements and processes Data, Integration and Migration Plan and oversee data cleansing and migration, working with the Data and Systems Officer and suppliers. Ensure data flows reliably and securely ...

Polaris Product Writer Test analyst

Location
Greater London, England, United Kingdom
strong knowledge of commercial insurance products , particularly eTrade offerings such as Shops, Offices, Property Owners, Business Combined, and Tradespeople . The role focuses on testing the Product Writer platform , which is widely used across the insurance industry for defining product rules, workflows, underwriting logic, and policy structures. Role Overview … This includes ensuring product accuracy, validating underwriting rules, and confirming that workflows align with business and regulatory requirements. Key Responsibilities Perform end-to-end testing of the Product Writer platform, including: Functional testing Regression testing System and integration testing Validate commercial product configurations for eTrade ...

Technology Delivery Manager

Location
Enfield, England, United Kingdom
with agreed business outcomes. Working across internal technology teams and third-party suppliers, the role will coordinate delivery from discovery and design through build, integration, testing and implementation. This includes managing delivery plans, dependencies, resources, budgets, risks, issues and reporting, ensuring technology delivery remains aligned with wider programme … position of Technology Delivery Manager: Lead end-to-end technology delivery across the Originations Ecosystem programme, from discovery and mobilisation through design, build, integration, testing and implementation. Own and manage the integrated technology delivery plan, ensuring milestones, resources, budgets, dependencies and supplier commitments remain on track. Translate business ...

Technology Delivery Manager – Cardiff

Location
Greater London, England, United Kingdom
with agreed business outcomes. Working across internal technology teams and third-party suppliers, the role will coordinate delivery from discovery and design through build, integration, testing and implementation. This includes managing delivery plans, dependencies, resources, budgets, risks, issues and reporting, ensuring technology delivery remains aligned with wider programme … position of Technology Delivery Manager: Lead end-to-end technology delivery across the Originations Ecosystem programme, from discovery and mobilisation through design, build, integration, testing and implementation. Own and manage the integrated technology delivery plan, ensuring milestones, resources, budgets, dependencies and supplier commitments remain on track. Translate business ...

Technology Delivery Manager

Hiring Organisation
Stellar Select
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£70000/annum Benefits
with agreed business outcomes. Working across internal technology teams and third-party suppliers, the role will coordinate delivery from discovery and design through build, integration, testing and implementation. This includes managing delivery plans, dependencies, resources, budgets, risks, issues and reporting, ensuring technology delivery remains aligned with wider programme … position of Technology Delivery Manager: Lead end-to-end technology delivery across the Originations Ecosystem programme, from discovery and mobilisation through design, build, integration, testing and implementation. Own and manage the integrated technology delivery plan, ensuring milestones, resources, budgets, dependencies and supplier commitments remain on track. Translate business ...