18 of 18 Contract API Integration Jobs in London

Build and enhance responsive user interfaces using React and TailwindCSS . Contribute to key modules including: Client & Supplier Onboarding Flows Waste Reporting Module Scheduler for Recurring Events Customer Portal API Integration Rebate Management System Ensure seamless data integration between services via secure REST APIs. Deploy, test, and optimise services within the AWS environment. The Full-Stack Developer More ❯

Build and enhance responsive user interfaces using React and TailwindCSS . Contribute to key modules including: Client & Supplier Onboarding Flows Waste Reporting Module Scheduler for Recurring Events Customer Portal API Integration Rebate Management System Ensure seamless data integration between services via secure REST APIs. Deploy, test, and optimise services within the AWS environment. The Full-Stack Developer More ❯

Build and enhance responsive user interfaces using React and TailwindCSS . Contribute to key modules including: Client & Supplier Onboarding Flows Waste Reporting Module Scheduler for Recurring Events Customer Portal API Integration Rebate Management System Ensure seamless data integration between services via secure REST APIs. Deploy, test, and optimise services within the AWS environment. The Full-Stack Developer More ❯

or business events. Create Power Apps frontends integrated with GenAI services and enterprise data. Build and manage custom connectors to internal APIs and third-party services. Microsoft 365 & Graph API Integration Enable agents to access and reason over content in: SharePoint, OneDrive, Teams, Outlook, and Planner Architect multi-step agent workflows using: Semantic Kernel SDK (C# or Python … GPT-4, function calling, chat completion) Planner and Kernel Memory APIs for reasoning and memory RAG pipelines grounded in enterprise data via Azure AI Search Enterprise Data & AI Services Integration: Azure AI Search (vector indexing, hybrid search) Azure Form Recognizer for document understanding Azure Language Services for summarization, translation, and NER Deploy solutions using: Azure Kubernetes Service (AKS) or … access control The successful Microsoft Power Platform/Agentic AI Engineer will have experience in: Copilot Studio, Power Automate, Power Apps, custom connectors SharePoint Development Proficiency in Microsoft Graph API, Azure OpenAI, and Semantic Kernel Solid programming skills in Python and/or C# LangChain, AutoGen, or similar orchestration frameworks Azure AI Search, Form Recognizer, and Language Services GitHub More ❯

They're looking for a Backend Software Engineer to help design and develop backend systems supporting large-scale LLM and GenAI workloads. The role will focus on backend architecture, API integration, and automation across data and compute pipelines. What you'll be doing: Build and maintain Python backend systems for GenAI evaluation Integrate LLM components with data and … FastAPI, Cloud (GCP/AWS), CI/CD, Git/GitHub, automated testing, DevOps fundamentals Ideal for: Engineers with a strong backend foundation and hands-on GenAI or LLM integration experience looking to contribute to applied AI in healthcare. More ❯

The Role You’ll be working on a bespoke claims management platform that supports everything from claim validation to property surveying and repair coordination. The role involves backend development, API integration, and contributing to multiple internal tools and products.You’ll join a collaborative team of developers with a strong peer-review culture. There are no dedicated testers, so More ❯

Rate: £350-450 p/day Start: ASAP Key Skills: Strong commercial experience with React and TypeScript . Experience deploying and managing applications in AWS . Strong understanding of API integration and data flow between backend and frontend. Solid grasp of SQL and data handling within the UI. Experience with testing frameworks (Jest, Cypress, React Testing Library). More ❯

for advertising product issues, implementations, and escalations Build expertise across performance marketing products, web integrations, and analytics tools Troubleshoot and resolve client issues related to pixels, catalogs, delivery, and API integrations Collaborate with product and engineering teams to escalate bugs and track resolution Translate complex technical concepts into clear, actionable guidance for non-technical stakeholders Help improve internal tools More ❯

hallucination, bias, tone, etc.). Familiarity with tools like Trulens, HumanLoop, PromptLayer, or similar; experience designing QA approaches for GenAI environments. Knowledge of modern AI architectures (RAG pipelines, embeddings, API integrations such as OpenAI, Azure OpenAI, Anthropic). Experience designing and implementing structured test regimes in fast-evolving contexts. Excellent communication and facilitation skills, engaging both technical and business More ❯

expertise in Dynatrace (SaaS & On-Premises) including: Application Performance Monitoring Anomaly Detection Profiles Alerting Rules & Profiles Synthetic & Log Monitoring Real User Monitoring (RUM) DQL & Grail for advanced data analytics API integrations with complex systems Experience working in resilience/observability engineering. Strong communication skills and ability to work in high-pressure environments. Flexible, pragmatic, and delivery-focused with a More ❯

Key skills/experience required: Expertise in Jira configuration workflows, permissions, dashboards, filters, automation, and notification schemes# Experience implementing Jira (ideally for engineering or construction organisations) Working knowledge of API integrations and connectors with productivity and design tools (e.g. Teams, Slack, Autodesk, SharePoint) Proven ability to translate complex project processes (design reviews, change control, construction status) into logical digital More ❯

Key skills/experience required: Expertise in Jira configuration — workflows, permissions, dashboards, filters, automation, and notification schemes# Experience implementing Jira (ideally for engineering or construction organisations) Working knowledge of API integrations and connectors with productivity and design tools (e.g. Teams, Slack, Autodesk, SharePoint) Proven ability to translate complex project processes (design reviews, change control, construction status) into logical digital More ❯

60+ programme Experience: 4+ years Essential Skills Technical: Strong Python development (primary focus), Ruby experience desirable Experience across multiple services, particularly data services Docker, Kubernetes, Git/version control API development and integration Agile working practices and adherence to technical standards Approach: Pride in writing high-quality, well-documented code Ownership of the full development process Collaborative working More ❯

60+ programme Experience: 4+ years Essential Skills Technical: Strong Ruby development (primary focus), Python experience desirable Experience across multiple services, particularly data services Docker, Kubernetes, Git/version control API development and integration Agile working practices and adherence to technical standards Approach: Pride in producing high-quality, well-documented code Ownership of the full development process Collaborative working More ❯

60+ programme Experience: 4+ years Essential Skills Technical: Strong Ruby development (primary focus), Python experience desirable Experience across multiple services, particularly data services Docker, Kubernetes, Git/version control API development and integration Agile working practices and adherence to technical standards Approach: Pride in producing high-quality, well-documented code Ownership of the full development process Collaborative working More ❯

new SmartStream Algo system, ensuring data integrity and functional accuracy. Collaborate with business analysts, developers, and project managers to understand requirements and translate them into test scenarios. Perform system integration testing (SIT) and support user acceptance testing (UAT) phases. Identify, document, and track defects using standard defect management tools. Participate in test reviews, walkthroughs, and sign-off processes. Ensure … updates and contribute to test reporting and metrics. Required Skills & Experience: Technical & Testing Expertise: Proven experience as a System Test Analyst or similar role in complex system upgrade or integration projects. Strong knowledge of system testing methodologies, tools, and best practices. Experience testing interfaces (inbound/outbound), including file-based and API integrations. Familiarity with test management tools More ❯

new SmartStream Algo system, ensuring data integrity and functional accuracy. Collaborate with business analysts, developers, and project managers to understand requirements and translate them into test scenarios. Perform system integration testing (SIT) and support user acceptance testing (UAT) phases. Identify, document, and track defects using standard defect management tools. Participate in test reviews, walkthroughs, and sign-off processes. Ensure … updates and contribute to test reporting and metrics. Required Skills & Experience: Technical & Testing Expertise: Proven experience as a System Test Analyst or similar role in complex system upgrade or integration projects. Strong knowledge of system testing methodologies, tools, and best practices. Experience testing interfaces (inbound/outbound), including file-based and API integrations. Familiarity with test management tools More ❯

join a strategic system upgrade programme within a leading financial services organisation. This role focuses on upgrading the Algo Collateral Management System, ensuring robust interface validation and seamless system integration across key business and technology functions. Role & Responsibilities: Develop and execute detailed test plans, cases, and scripts for the system upgrade. Validate inbound and outbound interfaces, ensuring data integrity … and functional accuracy. Collaborate with business analysts, developers, and project managers to define and test requirements. Conduct System Integration Testing (SIT) and support User Acceptance Testing (UAT). Identify, document, and manage defects using tools such as JIRA. Ensure compliance with internal QA standards and contribute to test reporting and sign-off. Essential Skills & Requirements: Proven experience as a … System or Senior Test Analyst on complex system upgrade or integration projects. Strong knowledge of system testing methodologies and tools. Experience testing interfaces (file-based and API integrations). Proficiency with SQL for data validation and backend testing. Solid understanding of collateral management, settlements, or post-trade processing within financial services. Prior experience with SmartStream or Algo Collateral More ❯