1 to 25 of 40 Contract REST Jobs in London

POC to support new opportunities. What are we looking for? 3+ years software development experience, including: JAVA 5/J2EE, ReactJS, Web Services, XML, SQL, Gradle, Spring, Hibernate, Castor, REST/JSON and Enterprise Messaging System. Using configuration management tools like Git, Tortoise SVN, Source Tree, Perforce, Plastic and ticket management tools like Azure DevOps, JIRA, HPQC. Knowledge of the More ❯

in maintenance mode. Contribute to automated testing (C#) and infrastructure improvements (Docker, Ansible, Python, Linux). Required Skills: Proven experience with Java, Spring, Maven, Git, JUnit, and Web APIs (REST/JSON, XML/SOAP). Active SC clearance is essential. Strong background in complex or high-pressure software development environments. Ability to collaborate effectively within a diverse technical team More ❯

in maintenance mode. Contribute to automated testing (C#) and infrastructure improvements (Docker, Ansible, Python, Linux). Required Skills: Proven experience with Java, Spring, Maven, Git, JUnit, and Web APIs (REST/JSON, XML/SOAP). Active SC clearance is essential. Strong background in complex or high-pressure software development environments. Ability to collaborate effectively within a diverse technical team More ❯

AI/ML frameworks such as TensorFlow, PyTorch, OpenAI API, or LangChain. Knowledge of microservices architecture, containerization (Docker, Kubernetes), and event-driven patterns. Strong understanding of API design, including REST, GraphQL, and WebSockets. Familiarity with DevOps practices, CI/CD pipelines, and infrastructure-as-code (Terraform, AWS CDK). Excellent problem-solving skills and ability to translate business requirements into More ❯

Skills: SPFx Development: Proven experience building and deploying SPFx solutions React & TypeScript: Strong proficiency in modern React development Fluent UI: Experience with Microsoft's Fluent UI design system SharePoint REST API: Integration with SharePoint lists and libraries Modern Tooling: Node.js, npm, webpack, gulp, Visual Studio Code Frontend Development Skills: JavaScript/TypeScript: Advanced knowledge of modern JavaScript and TypeScript CSS More ❯

experience with core AWS services (EC2, S3, Lambda, IAM, etc.) Kafka/Messaging Systems: Expertise in building event-driven architectures SQL: Strong experience with relational databases and query optimization REST/JSON APIs: Designing, developing, and consuming scalable APIs Docker: Proficiency in containerizing applications for local and cloud environments Communication: Excellent communication skills to convey complex ideas effectivel Nice to More ❯

experience with core AWS services (EC2, S3, Lambda, IAM, etc.) Kafka/Messaging Systems: Expertise in building event-driven architectures SQL: Strong experience with relational databases and query optimization REST/JSON APIs: Designing, developing, and consuming scalable APIs Docker: Proficiency in containerizing applications for local and cloud environments Communication: Excellent communication skills to convey complex ideas effectivel Nice to More ❯

grade applications Hands-on experience designing distributed microservices and event-driven integrations Proficiency with modern web frameworks and technologies such as React, Angular, Vue, JavaScript , SPA/SSR, and REST APIs Experience designing composable architectures (JAMstack, MACH), enabling scalable, API-first, modular solutions Strong understanding of Identity and Access Management standards (OAuth2, OpenID Connect, SAML, Azure AD, Auth0, Okta) Solid More ❯

Manage configuration and customization Strong experience in complex customizations using Maximo MBOs, Java, and automation scripts. Strong experience in integrating external systems like Salesforce Strong experience in integrations using REST APIs, JSON, and MIF (Maximo Integration Framework). DevOps practitioner with Bitbucket, Git and CI/CD experience Good understanding and exposure to Maximo Migration Process, Profiles and Permission setting More ❯

journey maps, personas, usability test artifacts, and user research reports. Skills & Tools Required Design Tools: Figma, Sketch, Adobe XD Frontend Technologies: HTML5, CSS3, JavaScript, Bootstrap, jQuery Frameworks: React.js, Next.js, REST APIs Project Management: Jira, Agile/Scrum methodologies Soft Skills: Strong collaboration, planning, and communication abilities Hybrid - 3 days from London office/week More ❯

automation using Selenium/Playwright, BDD cucumber and Java/.net is must Experience in using API testing tools like Postman, Insomnia Hands on knowledge on Web services (SOAP, REST and Micro Services) with spring or .Net Experience in Functional and Non- Functional testing: Including regression, integration, user acceptance to verify the quality and functionality of feature using automation framework More ❯

based in London - Contract - Hybrid *outside iR35* What You'll Be Doing Designing and developing enterprise-grade solutions in an Agile team. Building and maintaining middleware services using C# , REST APIs , FIX messaging , XML , and Microservices . Leading architecture discussions, code reviews, and release management. Collaborating with users and cross-functional teams to define and execute testing strategies. Mentoring junior More ❯

based in London - Contract - Hybrid *outside iR35* What You'll Be Doing Designing and developing enterprise-grade solutions in an Agile team. Building and maintaining middleware services using C# , REST APIs , FIX messaging , XML , and Microservices . Leading architecture discussions, code reviews, and release management. Collaborating with users and cross-functional teams to define and execute testing strategies. Mentoring junior More ❯

Spring Boot. You bring solid cloud experience (preferably AWS) and are confident working with Kubernetes and Docker . You’re skilled with messaging systems and APIs (Kafka, ActiveMQ, JMS, REST, CometD). You have hands-on experience with databases (DB2, MongoDB, MySQL). You understand caching technologies . You’re familiar with build tools (Maven), web servers (Jetty, Tomcat), and More ❯

e.g., Charles Proxy, Android Studio, Xcode) Knowledge on automation tools and techniques Knowledge of Accessibility testing for mobile applications Experience in working with API's and backend validations (Postman, REST Assured) Experience with Cloud tools such as AWS S3, CloudWatch and Browser Stack. Knowledge of Agile/Scrum Methodologies Excellent Problem-solving skills and attention to detail Strong Communication and More ❯

Experience with Pega Platform versions 8.x and above. Proficiency in configuring strategies, propositions, treatments, and channels. Strong knowledge of Pega's data model, data flows, and integration capabilities (eg, REST, SOAP). Certifications (Highly Preferred): Pega Certified Decisioning Consultant (PCDC) is essential; Pega Certified Lead Decisioning Architect certification would be a significant advantage. Soft Skills: Exceptional communication and stakeholder management More ❯

the team. What are we looking for? Senior Developer 5+ years of software development experience, including JAVA 5/J2EE, ReactJS, Web Services, XML, SQL, Gradle, Spring, Hibernate, Castor, REST/JSON, and Enterprise Messaging System. Experience with configuration management tools like Git, Tortoise SVN, Source Tree, Perforce, Plastic, and ticket management tools like Azure DevOps, JIRA, HPQC. Knowledge of … Creek, Sapiens, tia, etc.) is highly desirable. Lead Developer 8+ years of software development experience, including JAVA 5/J2EE, ReactJS, Web Services, XML, SQL, Gradle, Spring, Hibernate, Castor, REST/JSON, and Enterprise Messaging System. Extensive experience with configuration management tools like Git, Tortoise SVN, Source Tree, Perforce, Plastic, and ticket management tools like Azure DevOps, JIRA, HPQC. In More ❯

Revenue Management integrations with Supply Chain Financial Orchestration, Order Management, Projects, Contracts, and Intercompany Debug Receivables and Payables integrations with Billing Tax Engines, and Oracle Cloud Intercompany Work with REST/SOAP APIs for importing revenue contracts, invoices, intercompany transactions, and payments Support FBDI/ADFdi to load bulk revenue, AR, and intercompany transactions Identify and resolve slow AutoAccounting, Intercompany More ❯

Revenue Management integrations with Supply Chain Financial Orchestration, Order Management, Projects, Contracts, and Intercompany Debug Receivables and Payables integrations with Billing Tax Engines, and Oracle Cloud Intercompany Work with REST/SOAP APIs for importing revenue contracts, invoices, intercompany transactions, and payments Support FBDI/ADFdi to load bulk revenue, AR, and intercompany transactions Identify and resolve slow AutoAccounting, Intercompany More ❯

Revenue Management integrations with Supply Chain Financial Orchestration, Order Management, Projects, Contracts, and Intercompany Debug Receivables and Payables integrations with Billing Tax Engines, and Oracle Cloud Intercompany Work with REST/SOAP APIs for importing revenue contracts, invoices, intercompany transactions, and payments Support FBDI/ADFdi to load bulk revenue, AR, and intercompany transactions Identify and resolve slow AutoAccounting, Intercompany More ❯

. JSM Automations, Workflows, and Assets (Insight). Jira Query Language (JQL). ITIL 4, Agile, or DevOps frameworks. Familiarity with scripting or automation tools (e.g., PowerShell, Python, or REST APIs). If you do have the relevant experience for this Jira SME role, please do apply. More ❯

years of hands-on experience with WebMethods tools (Integration Server, Broker, Designer). Working knowledge of Axway technologies, particularly API management and B2B gateway. Understanding of web services (REST/SOAP) and common integration patterns . Strong problem-solving and debugging skills. Experience working in environments that require compliance with integration best practices and security standards. More ❯

light training for super-users/support. What you'll bring Strong track record delivering Power Apps (Canvas & Model-driven) , Power Automate , Dataverse solutions in production. Solid integration skills (REST/Graph APIs, webhooks, custom connectors) and Power FX proficiency. Practical ALM experience (Solutions, managed vs unmanaged, environments, source control, pipelines). Data modelling chops (Dataverse tables/relationships, security More ❯

Access environments. Familiarity with Cloud/SaaS technologies, specifically Microsoft Azure. Understanding of IT operations, infrastructure monitoring, and incident management workflows. Experience integrating VBA with external systems such as REST APIs and SQL databases. Strong problem-solving skills and attention to detail. Knowledge of scripting languages for automation (e.g., PowerShell). Understanding of security concepts applicable to the platform estate. More ❯

other architecture frameworks Expertise in Microsoft Graph API, Microsoft 365 compliance and security, and identity management. Experience with Copilot Studio and building custom Copilot agents or plugins. Familiarity with REST APIs, JSON, OAuth, and integration patterns with enterprise systems (e.g., CRM, ERP, data lakes). Understanding of prompt engineering, grounding techniques, and responsible AI principles. More ❯