21 of 21 Contract API Design Jobs in the UK

lead ing engineering teams and large-scale backend platforms. Job Summary: We are seeking a highly skilled Engineering Tech Lead Node.js to lead the design, development, and evolution of scalable, high-performance backend systems. The ideal candidate should possess deep technical expertise in the Node.js ecosystem, strong architectural … system design capabilities, and proven experience lead ing engineering teams through complex technical challenges. This role requires a hands-on lead er who can drive technical strategy, mentor engineers, establish engineering best practices, and architect distributed systems capable of handling enterprise-scale workloads. Key Responsibilities Lead the architecture, design ...

Progress OpenEdge ABL SQL Transact Progress Page Designer COINS Application Dataset Creation COINS Functional & Module Knowledge COINS Data Lineage Mapping COINS Tables & Schema Knowledge API Design Principles REST APIs HTTP Methods (GET, POST, PUT, PATCH, DELETE) JSON Payload Design OpenAPI/Swagger API Versioning Pagination & Filtering … API Error Handling API Testing Desirable: Understanding of CVR (Cost Value Reconciliation) Construction ERP experience Experience working with enterprise integration platforms Contract Details: Outside IR35 100% Remote Initial 12-month contract Long-term programme roadmap (6-8 years) Contractors invited to propose their own day rate ...

Opportunity You will join a high-impact development squad building commercial offerings on top of the thriving open-source Backstage framework. You will design and build backend systems, APIs, and developer portals that elevate the developer experience across external commercial clients and internal engineering teams alike. Your Impact Backend … API Systems: Design, build, and maintain scalable backend services and APIs primarily using TypeScript, Node.js, and modern web technologies. Developer Experience & Infrastructure: Build and operate infrastructure, developer toolsets, and CI/CD deployment pipelines to streamline engineering workflows. Engineering Excellence: Elevate code quality through technical RFCs, code reviews ...

Python (pyspark): Experience with data pipelines and analytics is a plus. Power BI: Familiarity with developing dashboards and data models. Architecture: Knowledge of microservices, API design, and event-driven architectures. DevOps/CI/CD: Experience with Azure DevOps, GitLab, GitHub Actions, or similar tools. Cloud Platforms: Proficient … Azure or AWS (Azure preferred). Databases: Strong skills in SQL Server, PostgreSQL, or other relational databases. Key Responsibilities Design & Develop: Create and maintain full stack applications using React JS and C#.NET Core. Build Services: Develop high-performance backend services and RESTful APIs with a focus on scalability ...

systems that enable global commerce, while evolving an existing real-time platform to support new markets. You will address backend capacity constraints and help design a shared transaction and ledger layer used across multiple business lines. This is a hands-on senior engineering role requiring both high-quality delivery … strong technical leadership in ambiguous, high-scale environments. You will be expected to: Design scalable systems with correctness and failure modes considered from the outset Clarify and scope requirements before proposing solutions Make pragmatic trade-offs in system design, avoiding over-engineering Operate independently without reliance ...

deliver against them. It is not a programme, delivery or governance position: you make the architectural calls rather than facilitate them. You will: Design large-scale agentic AI architectures: LLM document processing, structured extraction, RAG, invoice-to-contract matching Own low-level design decisions, including API design ...

Title: Java Developer Rate: £400 (Inside IR35) Duration: 12 Months Location: Remote Clearance: BPSS Stages: 1 Stage Must Have Government Experience Key Responsibilities Design and develop high-quality Java applications and microservices. Build and maintain RESTful APIs and Back End services. Collaborate with architects, business analysts, testers, and DevOps … engineers. Contribute to technical design discussions and architectural decisions. Implement automated testing and support a TDD approach. Participate in code reviews and promote engineering best practices. Develop and deploy applications using cloud-native technologies. Troubleshoot and resolve production issues. Ensure solutions meet security, performance, and accessibility requirements. Essential Skills ...

across Scotland. The Role You'll play a key role in developing and supporting modern digital services, working within high-performing Agile teams to design, build and enhance secure, resilient and user-focused applications. Key responsibilities include: Developing and supporting modern software solutions using Java, Spring Boot and React. … pipelines and cloud-native deployments. Designing and implementing scalable technical solutions aligned to Digital First and GDS standards. Building reusable UI components and maintaining design systems. Developing automated testing using TDD, Playwright and Consumer-Driven Contract Testing. Troubleshooting issues across cloud-native platforms and legacy environments. Participating in code ...

management, observability, and resilience patterns. Experience delivering production services deployed on Kubernetes. Experience building highly available, scalable, and reliable distributed systems. Strong knowledge of API design principles, including REST, gRPC, versioning, authentication, authorization, error handling, and backward compatibility. Experience with microservices architectures and the operational challenges of running … understanding of Linux, containers, networking fundamentals, and cloud infrastructure concepts. Experience with production monitoring, logging, tracing, alerting, and incident response. Ability to lead technical design discussions, make pragmatic architecture decisions, and mentor other engineers. Strong ownership mindset with a focus on reliability, maintainability, and operational excellence. Nice to Have ...

Boomi AtomSphere, connecting multiple enterprise platforms across cloud and on-premise environments. This is a hands-on technical position requiring strong Boomi development experience, API integration knowledge and the ability to support complex integration landscapes. Key Responsibilities: Design and develop scalable integration solutions using Dell Boomi AtomSphere, including … secure Managed File Transfer (MFT) workflows to support high-volume and sensitive data transfers Publish, secure and govern REST/SOAP APIs through Boomi API Management, including gateway configuration, throttling and developer portal management Develop and maintain CI/CD pipelines using Git, Azure DevOps or Jenkins, supporting automated ...

Overview: Youll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow. What Youll Bring: Senior … ability to architect and lead distributed REST microservices at scale. Strong authority in AWS serverless engineering: Lambda-first mindset, hands-on experience with API Gateway, SQS, Step Functions, EventBridge and IAM. Deep data expertise across Aurora MySQL and DynamoDB: schema design, access patterns, indexing, query tuning, and pragmatic ...

Chicago). The role offers the opportunity to contribute to business-critical systems while working in a collaborative and supportive environment. Key Responsibilities Design, develop, enhance, and maintain enterprise applications using C# and .NET technologies. Support and improve existing business-critical systems, ensuring stability, performance, and scalability. Work closely … with business users, analysts, and technical teams to gather requirements and deliver solutions. Participate in the full software development lifecycle, including design, development, testing, deployment, and support. Collaborate with globally distributed development teams across multiple locations and time zones. Contribute to technical discussions, solution design, code reviews ...

Chicago). The role offers the opportunity to contribute to business-critical systems while working in a collaborative and supportive environment. Key Responsibilities Design, develop, enhance, and maintain enterprise applications using C# and .NET technologies. Support and improve existing business-critical systems, ensuring stability, performance, and scalability. Work closely … with business users, analysts, and technical teams to gather requirements and deliver solutions. Participate in the full software development lifecycle, including design, development, testing, deployment, and support. Collaborate with globally distributed development teams across multiple locations and time zones. Contribute to technical discussions, solution design, code reviews ...

Experience with AWS or Azure Familiarity with Docker and Kubernetes Experience working in secure or highly regulated environments Strong understanding of software architecture and API design IT WOULD BE NICE FOR THE AI SOFTWARE ENGINEER TO HAVE. Experience with RAG pipelines and vector databases Knowledge of MLOps tooling ...

shape the future of knowledge graph and AI platforms? We are looking for an experienced Knowledge Graph Architect to lead technical direction, drive ontology design, and set standards for a high-performing graph ecosystem. What You'll Do Define Strategy & Architecture: Own the overall technical architecture and target state … knowledge graph platform, ensuring it scales, performs, and remains maintainable. Lead Ontology Governance: Drive the design and governance of the ontology so it accurately reflects business semantics and supports complex downstream use cases. Set Best Practices: Establish modelling standards for nodes, relationships, and properties across the graph. Guide Integration ...

Lead, you will be involved in all aspects of the platform's development and ongoing enhancement. The role covers: Core Python application development Web API design, development and maintenance Database development and optimisation Infrastructure and Server Side processes Front End enhancements using JavaScript/Angular Test automation … role in driving Agile best practices, promoting high-quality engineering standards and helping shape the future direction of the platform. Key Responsibilities Design, develop and maintain Python-based applications and services Build and enhance APIs supporting critical business functionality Deliver enhancements and features through the Jira backlog Work closely ...

Chicago). The role offers the opportunity to contribute to business-critical systems while working in a collaborative and supportive environment. Key Responsibilities Design, develop, enhance, and maintain enterprise applications using C# and .NET technologies. Support and improve existing business-critical systems, ensuring stability, performance, and scalability. Work closely … with business users, analysts, and technical teams to gather requirements and deliver solutions. Participate in the full software development lifecycle, including design, development, testing, deployment, and support. Collaborate with globally distributed development teams across multiple locations and time zones. Contribute to technical discussions, solution design, code reviews ...

expertise in Python development. AI Knowledge : Familiarity with LLMs and Generative AI solutions, along with frameworks like LangChain or LangGraph. Technical Skills : Proficiency in API design and integration, SQL, data processing, Git, and CI/CD practises. Production Focus : A solid engineering mindset with the capability to extend ...

expertise in Python development. AI Knowledge : Familiarity with LLMs and Generative AI solutions, along with frameworks like LangChain or LangGraph. Technical Skills : Proficiency in API design and integration, SQL, data processing, Git, and CI/CD practises. Production Focus : A solid engineering mindset with the capability to extend ...

Essential Experience: React Next.js Strong commercial experience developing scalable backend systems using TypeScript and Node.js. Deep understanding of software architecture, API design, integration patterns and modern engineering best practices. Experience working with high-volume data platforms, data integrations and large-scale data migrations. Exposure to Databricks integrations would ...

drive architectural decisions will be essential. Responsibilities Define and maintain the end-to-end solution architecture across the rewards portal and wider Salesforce ecosystem. Design integration patterns across Salesforce, customer identity, APIs, mobile applications and enterprise platforms. Translate business and technical requirements into scalable, resilient and maintainable solution designs. … Define the architecture for SSO, customer identity integration and associated authentication journeys. Review and assure API designs, data flows, integration components and system dependencies. Support the design of mobile and in-app webview customer experiences. Produce architecture artefacts, solution options, design decisions and technical roadmaps. Coordinate suppliers ...