51 to 75 of 250 API Design Jobs in England

digital platform, shaping APIs, integrations and user‐facing components that directly enable new propositions and end‐to‐end customer journeys. What you will do Design, build and maintain cloud‐native backend and frontend components, including APIs, microservices, integrations and digital interfaces. Deliver end‐to‐end digital capabilities with … Technical Leads and Architects to refine requirements and translate them into robust technical solutions. Apply modern engineering practices such as AI‐SDLC, event‐driven design, microservices architecture, containerisation and infrastructure‐as‐code. Support CI/CD pipelines, automated testing, observability and operational readiness to enable reliable and frequent deployments. ...

digital platform, shaping APIs, integrations and user‐facing components that directly enable new propositions and end‐to‐end customer journeys.## **What you will do*** Design, build and maintain cloud‐native backend and frontend components, including APIs, microservices, integrations and digital interfaces.* Deliver end‐to‐end digital capabilities with … Technical Leads and Architects to refine requirements and translate them into robust technical solutions.* Apply modern engineering practices such as AI-SDLC, event‐driven design, microservices architecture, containerisation and infrastructure‐as‐code.* Support CI/CD pipelines, automated testing, observability and operational readiness to enable reliable and frequent deployments. ...

first‐class concerns. Inputting into architecture and technical direction in collaboration with Principal Engineers – making considered, well‐reasoned decisions on service boundaries, data design, messaging patterns, consistency guarantees and performance. Championing a high‐quality engineering culture – test coverage, peer review, CI/CD discipline via GitHub Actions, Infrastructure … proven senior-to-staff-level backend engineer with deep, current expertise in C# and .NET Core 8/9 – you can architect and lead design of distributed REST API microservices at scale. Authority in AWS serverless architecture – Lambda‐first, with strong working knowledge of API Gateway ...

Contribute to the development of our next-generation platform channels. Partner on the delivery of new products while continuously maintaining and improving existing ones.Architecture & Design: Collaborate with team members and engineering leaders to design new services and components utilizing our internal Request for Comments (RFC) process.End … Experience with Micro Frontends (MFEs) is a major plus.DevOps & Cloud: Hands-on experience with Docker, Kubernetes, Terraform, and AWS.Foundations: Strong understanding of system architecture, API design, scalable service integration, Linux systems, and Git version control.Core Soft Skills:Strong knowledge of basic algorithms, object-oriented/functional design ...

work on the back-end team — leading planning, architecture, and code quality. You will work closely with the wider product and engineering team to design, develop, and maintain the back-end services that power our platform. This hybrid role is based out of our London office near Waterloo Station … reports to the Head of Platform. Responsibilities Back-end development & architecture Design, develop, and maintain scalable back-end services and APIs using Python and modern frameworks (FastAPI). Design and build high-performance API endpoints to handle complex hierarchical data queries and multi-dimensional aggregations for grid ...

development of our next-generation platform channels. Partner on the delivery of new products while continuously maintaining and improving existing ones. Architecture & Design: Collaborate with team members and engineering leaders to design new services and components utilizing our internal Request for Comments (RFC) process. End-to-End Ownership … Frontends (MFEs) is a major plus. DevOps & Cloud: Hands-on experience with Docker, Kubernetes, Terraform , and AWS . Foundations: Strong understanding of system architecture, API design, scalable service integration, Linux systems, and Git version control. Core Soft Skills: Strong knowledge of basic algorithms, object-oriented/functional design ...

startup with experience building SaaS products. You will also have a deep understanding of the key challenges engineers face and a firm grasp on design principles in prioritizing key features and capabilities. Your superpower is how to bridge the gap between technical specifics and business needs effortlessly and turn … engineering mastermind behind Heidi developing AI products which will change the face of healthcare Autonomously deliver beautiful & robust code with considerations on code structure design and scalability. Implement and optimize data storage solutions. Design, build, and maintain high-performance backend systems using Python. Architect and manage cloud infrastructure ...

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 ...

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 ...

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 ...

being made aligning solution delivery with business goals. Through your growing understanding of the event business domain, ensure business process is core to any design considerations Design, shape and govern scalable, secure and highly available solutions using Microsoft Azure technologies, ensuring they meet both current and future business … demands. Play an active role in architecture forums and design authorities, championing best practice and contributing to the continuous evolution of architectural standards and frameworks. Provide expert technical leadership and guidance to engineering teams, supporting the successful delivery of robust, high-quality solutions. Define, establish and uphold governance standards ...

helping shape modern platforms that leverage Agentic AI, workflow orchestration, and intelligent automation to solve complex business challenges. What You'll Do Lead the design and delivery of scalable Java 17+/Spring Boot microservices Own architecture decisions, system design, and engineering standards Design resilient, high-performance … adoption of AI engineering tools including GitHub Copilot, Cursor, and Claude Code Deliver AI-powered features using LLMs, RAG, semantic search, and intelligent automation Design workflow orchestration solutions using Camunda or similar BPM platforms Lead the implementation of Agentic AI capabilities, autonomous workflows, and AI-driven decision making Drive ...

Required Technology 15+ years of progressive software engineering; 5+ years leading AI‐native solutions at enterprise scale. Hands‐on with LLMs and agentic frameworks; design and deploy AI systems that augment SDLC (requirements → coding → testing → ops). Tooling & Platforms (practitioner proficiency) Claude Code (Anthropic) for secure, context‐rich code …/Gemini for research workflows where permitted; govern enterprise knowledge ingestion. Architecture & Integration Distributed systems, microservices, cloud‐native (Azure/AWS/GCP); secure API design (REST/GraphQL). MLOps & AIOps: CI/CD for AI, model lifecycle (eval, versioning, rollout/rollback), guardrails, telemetry, drift monitoring ...

Design, build, and evolve payment services and capabilities that enable seamless customer transactions across M&S digital platforms. Develop resilient backend services, APIs, and integrations that support millions of customer payment journeys every year. Own features end-to-end, taking responsibility for solution design, development, testing, deployment … testing, and maintainability. Proficient in driving operational excellence through observability and modern engineering practices. Highest-signal resume keywords Java Engineering Expertise Backend Service Development API Design and Integration CI/CD Implementation Observability and Monitoring Hard Skills Backend Development API Development System Design Scalable Systems Resilient ...

fill the role of ‘Applications Development Technology Lead Analyst’ on the XiNG large scale distributed calculation platform (XiP). In this role you will design, build, and maintain the calculation engine at the heart of the XiP platform. This engine is responsible for c. 0.5 billion risk & suitability calculations … designing improvements to the distribution mechanisms of the engine which regularly parallelizes 250,000 hours of compute into a single 90‐minute execution: Lead design, development, and implementation of enhancements, focusing on optimizing distribution mechanisms, analyze current parallelization strategies, and identify opportunities to further improve efficiency, scalability, and throughput. ...

role for a developer who is deeply enthusiastic about the intersection of decentralized technologies and institutional finance. The successful candidate will contribute to the design, development, and deployment of Web3-native components and integrations that power Citi's digital asset infrastructure — spanning tokenization, smart contracts, on-chain settlement … Web3 engineering fundamentals, a curiosity for emerging blockchain ecosystems, and the ability to bridge decentralized technology patterns with enterprise-grade software standards. Key Responsibilities Design, develop, and deploy Web3 components and integrations for Citi's Digital Asset Platform, including smart contracts, on-chain event listeners, wallet integrations, and blockchain ...

role for a developer who is deeply enthusiastic about the intersection of decentralized technologies and institutional finance. The successful candidate will contribute to the design, development, and deployment of Web3-native components and integrations that power Citi's digital asset infrastructure - spanning tokenization, smart contracts, on-chain settlement … Web3 engineering fundamentals, a curiosity for emerging blockchain ecosystems, and the ability to bridge decentralized technology patterns with enterprise-grade software standards. Key Responsibilities Design, develop, and deploy Web3 components and integrations for Citi's Digital Asset Platform, including smart contracts, on-chain event listeners, wallet integrations, and blockchain ...

delivery methodology to ensure timely and high-quality delivery of software applications. Technical Ownership: Take technical ownership of a product or software solution, covering design, estimation, shaping, and user story/requirement creation. Solution Documentation: Document solutions, including architecture, configuration, release, and support handover. Stakeholder Collaboration: Collaborate and liaise … practices and modern architectural patterns, including microservices and message-driven architectures. Non-Functional Requirements: Experience developing applications with non-functional requirements in mind. Application Design: Experience in application/digital services design. Software Engineering Practices: Proficiency in software engineering practices like code reviews, CI/CD pipelines, and SOLID ...

built to last and built to scale.* **Drive Scalability & Reliability.** Lead the engineering effort to make RoD elastically scalable and enterprise-grade reliable. Design for high availability, graceful degradation, and zero-downtime deployments. Define SLOs, own the SRE practice for the platform, and be accountable when things need fixing. … fully understood at all times. You will set the standard and ensure the team can operate with confidence.* **Establish End-to-End Testing.** Design and champion a robust E2E testing strategy across the platform. From contract testing at service boundaries to full integration and regression suites, you will ensure ...

engineering role for a developer who is deeply enthusiastic about the intersection of decentralized technologies and institutional finance.The successful candidate will contribute to the design, development, and deployment of Web3-native components and integrations that power Citi's digital asset infrastructure — spanning tokenization, smart contracts, on-chain settlement … event-driven architectures to handle on-chain events, transaction lifecycle management, and blockchain state synchronizationCollaborate with architects and senior engineers to contribute to the design of scalable, secure, and resilient Web3 infrastructureParticipate in code reviews, providing and receiving constructive technical feedback to maintain high engineering standardsSupport the integration ...

platform is built to last and built to scale.Drive Scalability & Reliability. Lead the engineering effort to make RoD elastically scalable and enterprise-grade reliable. Design for high availability, graceful degradation, and zero-downtime deployments. Define SLOs, own the SRE practice for the platform, and be accountable when things need … must be fully understood at all times. You will set the standard and ensure the team can operate with confidence.Establish End-to-End Testing. Design and champion a robust E2E testing strategy across the platform. From contract testing at service boundaries to full integration and regression suites, you will ...

developer experience, providing tools and infrastructure that support agile methodologies and continuous integration/continuous deployment. Identify problems, propose solutions, and execute software design, development, operations, and technical troubleshooting. Develop secure, high-quality full stack production code, and review and debug code. Support the products you build through … team culture of diversity, opportunity, inclusion, and respect. Required Qualifications, Capabilities, and Skills Practical knowledge of the full software development lifecycle, including system design, application development, testing, and operational stability. Ability to develop, debug, and maintain code using modern programming languages and database querying languages. Good understanding of Java ...

Ireland providing specialist services to a wide range of blue-chip clients. The role We are seeking technical polyglots who enjoy both technical architectural design, hands-on coding and peer reviews, though also like the idea of the equally important social/client-facing aspect of the role. … development architecture as well as supporting business analysts and product owners in planning and story-mapping for new development. You will act as technical design authority (TDA) for delivery of technical stories and produce technical documentation artefacts to support the delivery process. Main Responsibilities Duties will include: The design ...

services effectively. The role will be working closely alongside the SPM business team and technology vendors to engineer solutions supporting their strategic roadmap. Responsibilities: Design, build, and improve modern application services that support a strategic business platform, focusing on quality, maintainability, and performance. Develop backend services and APIs supporting … strong track record of delivering production systems. Strong experience building backend applications and APIs, ideally in Java. Practical experience across service‐based architecture, API design, integration patterns, and modern web application delivery. Experience contributing to modernisation or platform evolution initiatives is strongly desirable. Strong engineering discipline across testing ...

build. The Role We’re looking for Full Stack Engineers who care deeply about the craft of building software: strong typing, thoughtful API design, robust data modeling, and interfaces that are a pleasure for both users and other engineers to work with. You won’t be building … rather build something thoughtfully than ship something fragile, and we treat velocity and quality as complementary, not competing. What You’ll Do Design and build platform systems in Python (FastAPI) – from API contracts to database schema and infrastructure – and high‐quality user‐facing experiences in TypeScript and React ...