1 to 25 of 66 API Design Jobs in the UK excluding London

Data Global Practice, which has seen strong growth and continued success across a variety of projects and sectors. Data Platforms is home to API Engineers, Data Engineers, Platform Engineers, Solutions Architects and Business Analysts focused on driving our customersdigital and data transformation using modern cloud platforms. We specialise … latest frameworks, reference architectures and technologies across AWS, Azure and GCP, including API/microservices patterns and data platforms such as AWS-native analytics services and Snowflake. As an AWS API Engineer/Data Architect at Capgemini, you will design and deliver secure, scalable API ...

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 + Benefits Join a newly formed Service Modernisation & AI team driving AI-first software … development tools (e.g. Claude Code, GitHub Copilot, LLMs) Experience with MCP, AI automation, or agentic AI systems Strong understanding of microservices and API design Strong TDD experience Java/Microservices/API design/LLMs/AI/Claude Code/Copilot ...

delivering secure, scalable and reusable AI capabilities that can be consumed across digital products, automation platforms, Copilot solutions and wider business services. Key Responsibilities Design and build AI-enabled services using Azure AI Foundry and Azure OpenAI Design, develop and support secure REST APIs using C# and .NET … Build and manage Azure Functions and serverless services Develop and support MCP Servers and AI integration services Design event-driven architectures using Azure Service Bus Manage APIs through Azure API Management Expose AI capabilities through secure, auditable APIs and reusable services Support Copilot Studio and AI-enabled workflows ...

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 ...

technical input, guidance and leadership to the team (including code quality, best practices, processes, some aspects of release management, etc.). Assist in the design and documenting of solutions meeting functional and non‐functional requirements. Lead by example getting directly involved in the day‐to‐day delivery of work … engineering + Practical experience designing and developing management and control‐plane capabilities for line of business or SaaS applications, including stack/environment management, API design for platform services, and developer/operator UX. Experience working with or designing Azure stamp‐based or scale‐unit architectures, including multi ...

enterprise‐grade products trusted by enterprise customers. This hands‐on engineering role involves designing and building AI capabilities across Epicor’s ERP portfolio. Responsibilities Design and build the next generation of AI capabilities across Epicor’s ERP portfolio. Lead rapid PoC and MVP exploration of new AI capabilities … evolve successful ones into production‐grade services. Design and build cloud platform services, APIs, data layers, and integrate them with large, established ERP products. Bring research & development output up to enterprise standard: reliability, observability, security, multi‐tenancy, and safe failure behavior. Integrate LLMs and agentic patterns responsibly, establishing guardrails ...

Ready to shape the future of our integration capability and become the technical authority behind enterprise-wide connectivity? Want to lead the design and delivery of scalable, secure, cloud-first integrations that power real business impact? Excited by the challenge of modernising legacy systems while driving best-practice engineering … architecture evolution and collaborate across teams to enable seamless, future-ready connectivity. What will you be doing? As a technical authority in integration and API design, youll set the standards that shape how our systems connectdefining integration patterns, ensuring architectural consistency and driving secure, scalable solutions across ...

Responsibilities Provide technical leadership across development teams to ensure the design and delivery of high-quality, scalable, and maintainable software solutions Lead the design and development of key features, components, and services across the application stack Provide hands‐on guidance in building scalable applications using React, Node.js … critical technical decisions, ensuring alignment with architectural standards and long‐term scalability goals Act as the primary escalation point for complex technical challenges and design issues Translate business and functional requirements into technical designs and implementation plans Collaborate with product owners, business analysts, and stakeholders to refine requirements ...

seeking an experienced Senior Technical Lead – Apigee to drive the design, implementation, and migration of enterprise-scale API management platforms. This role will be responsible for leading the delivery of Apigee Hybrid and Apigee X solutions , supporting complex API transformation programs, and guiding organizations through the migration … candidate will act as a senior technical authority, working closely with clients, architects, developers, and infrastructure teams to deliver secure, scalable, and high-performing API ecosystems. This is a highly visible, client-facing position requiring both deep technical expertise and strong leadership capabilities. Key Responsibilities Lead ...

Tech Practice Principal - Backend Lead Location: Hybrid: Client Site, AND Digital office, Remote. Proximity to Reading/Thames Valley is key Core Tech: Node.js, API Integration, Microservices, Microsoft Azure Cloud AND Introduction At AND, we accelerate the development of digital capabilities. In practice, that means helping ambitious leaders … oversee support for these backend systems. Engineering Culture: Set the "gold standard" for backend engineering routines. Drive a culture of technical pride, ensuring robust API design, secure cloud deployment practices, and insightful code reviews. Team Leadership & Delivery Management Delivery Accountability: Operates in "Project Mode," taking full accountability ...

lives of over 40 million UK citizens. We deliver impactful technology solutions across UK government departments, working at the forefront of user-centred design, agile delivery, and scalable digital services that genuinely make a difference. Visa sponsorship available for eligible candidates Strong focus on work-life balance with … Swansea, South Wales - three days per week on-site Role Overview We are seeking a highly skilled and experienced Java Developer to lead the design, development, and delivery of scalable, secure, and high-performance enterprise applications. The ideal candidate will possess deep expertise in Java and Spring Boot, strong ...

Director Data & Analytics API Experience - Data Services Background: CME Group runs some of the world's largest and most important trading venues, including derivatives exchanges, FX/FI platforms. The trading participants include leading investment banks, hedge funds, proprietary trading firms, investment managers, and retail traders, as well … stakeholders such as independent software vendors (ISVs) and data redistributors. To support our unique data and analytics products, we are now building a unified API-first distribution framework, simplifying consumption and value extraction. The Role: We are seeking a key stakeholder for the CMEG External Data-Analytics (DA) APIs ...

seeking a Senior Software Engineer with a strong focus on front-end UX to lead production applications using C# and .NET. Responsibilities include design decision-making, mentoring, CI/CD maintenance, and promoting best practices in a collaborative Agile summary above was generated by AI Who are we? . … role where you will build production Blazor applications in C# and .NET, shape how users experience the product, and help raise the bar on design quality across the t eam. You will be a true full-stack engineer with an eye for design, comfortable owning a feature from ...

target architecture, and a credible transition path — enabling bp's engineering platforms and SaaS solutions to operate as an integrated whole. Lead architectural design and decision-making at the intersection of internal platforms and enterprise SaaS, establishing integration patterns, data contracts, and governance standards that apply consistently across … platform estate. Act as the principal technical authority for platform engineering across the digital delivery organisation, providing expert guidance on platform design, cloud-native patterns, and systems integration to engineering teams and senior stakeholders. Drive resolution of complex cross-platform integration challenges, including identity, data flow, event-driven architecture ...

maintain high standards of engineering quality.**How you will make an impact*** Build and maintain reliable JVM-based services using Kotlin or modern Java.* Design and develop well-structured APIs and integrations.* Build reusable services, APIs and components that enable other teams to deliver consistently and reduce duplication.* Contribute … API design standards, documentation and versioning across services.* Deliver complete end-to-end features by connecting backend services and data models with responsive web interfaces.* Use appropriate test-first and test-informed practices to create effective automated tests.* Experiment with AI-assisted engineering tools where they provide clear ...

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 ...

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 ...

significant, and the opportunity to grow within a technically serious organisation is genuine. Key Responsibilities Collaborate with Solution Architects and Principal Engineers to design and implement solutions aligned with IT strategy and technical vision Take ownership of engineering deliverables, ensuring quality, scalability and adherence to best practices Design … developing and maintaining distributed, event driven, cloud native systems Expertise in modern .NET technologies (.NET Framework and .NET Core) using C# Strong experience in API design and development across REST and GraphQL Solid understanding of relational database design and optimisation with MSSQL or MySQL Hands on experience ...

people who bring something new to the team, not just technical skills. What You'll Be Doing As a Senior Backend Developer, you will design, build, and optimise high-quality server-side applications and APIs that power complex digital experiences. Working closely with front-end engineers, DevOps specialists, cloud … building scalable APIs and microservices Hands-on experience with cloud platforms (AWS, Azure, or GCP), including serverless compute Solid understanding of authentication, authorisation, and API security best practices Strong problem-solving skills and familiarity with cloud-native development patterns Desirable Experience with headless e-commerce platforms such as commercetools ...

Tomorrow., you will help deliver high-quality, business-critical solutions that create measurable client outcomes. Working alongside multidisciplinary teams, you will contribute to the design, development, and evolution of scalable applications, while embracing innovation, continuous improvement, and AI-enabled ways of working. This role is ideal for individuals … unable to work at home 100% of the time. Your Role: Deliver scalable, secure, and resilient application solutions that meet client and business objectives. Design, develop, and maintain high-quality backend services and reusable components. Contribute to the successful delivery of distributed and service-oriented solutions that enable business ...

core requirement is someone who understands what engineering for performance actually means and has the track record to prove it. Key Responsibilities - Design, build and deliver high-performance Java microservices using Spring Boot in a production cloud environment - Architect and evolve event-driven and low-latency system components, including … messaging and data pipeline design - Own technical decision-making across your domain, from API design and data modelling through testing, observability and production deployment - Integrate with AWS cloud infrastructure SQS, SNS, Lambda, S3 and related services, with hands-on infrastructure ownership - Drive engineering quality through code review ...

occasional out-of-hours support. Ensure unit tests are implemented and fit for purpose. Research and evaluate new technologies that could benefit the organisation. Design and develop high-quality Python software that meets complex business needs. Ensure code, documentation, and testing align with engineering standards. Deliver solutions that meet … expectations, and operational reliability. Integrate products with monitoring and support tooling. Experience/Skills required: Experienced Python Engineer who can make sound trade-offs, design for scale, and contribute to complex systems without over-engineering. Strong engineering judgement and real-world delivery experience. Senior-level experience designing and building ...

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 ...

Title: Senior Cloud Software Engineer Location: Cambridge, UK - Hybrid Employment Type: Full-time Key Responsibilities Design, develop, and maintain secure, resilient features for AVEVA CONNECT Core Services Contribute to technical design and implementation decisions across cloud and service-based architectures Build and improve services using modern engineering practices … engineering productivity, code quality, and delivery Work collaboratively in an agile development team and share knowledge on cloud technologies and practices Essential Requirements Strong design and coding skills, with a record of delivering high-quality technical outcomes Experience developing microservice or service-oriented architectures Good understanding of REST API ...

core mission capabilities. You’ll work as part of empowered, autonomous DevOps teams with regular contact with end-users to flexibly and efficiently understand, design, develop, deploy and maintain applications and services on AWS. You’ll be encouraged to identify new ways of solving problems and get to work … help you with them AWS Certification at Associate level eg Solution Architect, Developer or DevOps Expertise in microservices and API design Docker, and container runtime platforms such as Kubernetes, EKS, ECS etc Strong understand of operational concepts on AWS, particularly monitoring and observability, FinOps Utilising CI/ ...