51 to 75 of 112 API Design Jobs in England

solutions. The ideal candidate is a hands-on architect who can define target state architecture, guide engineering teams, and drive best practices across system design, integration patterns, and platform strategy.Responsibilities:Define and own the architecture for applications and services across the end-to-end commodities trade lifecycle.Lead the design … resiliency, including monitoring, alerting, automated controls, reconciliation frameworks, and reprocessing capabilities.Govern architecture decisions with a focus on performance, scalability, maintainability, security, and cost efficiency.Lead design reviews and provide technical direction to engineering teams, promoting strong engineering standards, reusable patterns, and consistent integration approaches.Drive adoption of modern SDLC and platform ...

Data, AI, and real-time decision-making we turn energy complexity into growth opportunities for our partners. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable and affordable.With teams across Europe, North America, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan … mock services. You move faster than a traditional sprint by using AI to handle the "heavy lifting" of boilerplate and logic generation.Technical Asset Development: Design, build, and maintain reusable mock services in Node.js/TypeScript. You'll implement contract-first APIs (REST/GraphQL), manage AWS deployments (API ...

with support to sites. The Role Due to Vital Energi's continued growth, we are looking for a Lead Integration Developer to lead the design, development and delivery of enterprise integration solutions that enable secure, scalable and reliable connectivity across business applications, data platforms and external systems. Define integration … very own Energy-from-Waste facility, there is no better time to join the family here at Vital Energi. A few key responsibilities Solution Design & Architecture: - Define integration architecture, standards, patterns and best practices. - Design scalable, resilient and secure integration solutions aligned to business and technical requirements. - Develop ...

Manchester, Blackpool, Birmingham, Newcastle) Contract: 6 Months Opportunity We are supporting a major UK Government programme seeking an experienced Solution Architect to lead the design and delivery of enterprise-scale solutions across business-critical functions including People, Finance, Commercial and Estates. This is an excellent opportunity to join … high-profile transformation programme where you will shape technical strategy, design modern cloud-based solutions, and work closely with senior stakeholders, engineering teams, and delivery partners. Key Responsibilities Design end-to-end technical solutions that align with business requirements and enterprise architecture standards. Lead architecture design ...

secure applications, platforms and deployment processes.This is not a traditional vulnerability management role, it is a hands-on Application Security role centred on secure design, CI/CD security, cloud-native technologies, Kubernetes, API security, code analysis, security-as-code and supporting development teams to build secure applications.This … integrating security controls throughout CI/CD pipelines.Strengthening the security of GitHub Actions and comparable continuous integration and deployment platforms.Providing technical guidance on secure API design and protecting externally accessible systems.Supporting the security of Azure cloud infrastructure, including Azure Kubernetes Service (AKS).Assisting with the protection of cloud ...

including authentication and tenant-scoped access patterns Shape how capabilities are exposed through OneSuite (streaming workflows, tool permissions, MCP integrations and stable CLI/API/MCP contracts) Set engineering standards (testing, CI/CD, deployment safety, observability) and mentor senior engineers through reviews, pairing and clear written guidance … QualificationsDemonstrable experince in senior backend, data platform or distributed systems engineering roles, with principal-level ownership across multiple services or teamsExpert Python backend engineering (API design, service boundaries, async/concurrent systems) plus strong SQL and modern testing practicesHands-on Databricks/PySpark experience and lakehouse/medallion ...

creativity and continuous improvement.As a Senior Lead Software Engineer at JPMorgan Chase within the Data Platform & Strategy team within Corporate Risk Technology, you will design, build, and enhance advanced data engineering solutions. You will play a pivotal role in delivering secure, stable, and scalable technology products that support … across multiple technical areas. Your work will help shape the team culture and the impact of our technology solutions.Job Responsibilities:Execute creative software solutions, design, development, and technical troubleshooting to solve complex problemsDevelop secure, high-quality production code for data-intensive applications and review code written by othersIdentify opportunities ...

lead a team of elite engineers who embed directly with Fortune 500 customers to ship deeply integrated AI agents—owning everything from agent design and evaluation to the backend services, data systems, and cloud infrastructure that make them production-ready. You'll partner closely with our Forward Deployed … volume for senior engineering roles.Hands-on fluency with the full AI stack. Deep familiarity with LLMs and agent systems, evaluation frameworks, backend and API design (Python or TypeScript), data systems (PostgreSQL, DynamoDB, MongoDB, or similar), and cloud infrastructure (AWS, Azure, or GCP) including Kubernetes, Docker, and IaC tooling.Experience ...

Software Architect – Retail Wealth Management 100,000 Plus Bonus and Bens 10% Pension Quant Capital is urgently looking for a Technical Architect with REST API Experience to join or well known Fintech client who are a well know wealth management software business. We are looking for a technically strong … architect to help to design and grow a SaaS platform. The company has bold global ambitions. They have a comprehensive microservices architecture in backend and are looking to extend the pattern into an ambitious micro-frontend strategy for user-facing applications. This is a leadership position. You will ...

work from home 1 day a week if desired. The salary on offer is £50,000-£62,000 DOE plus good benefits. Key Responsibilities Design, develop, and maintain scalable web applications using modern frameworks and technologies. Integrate Twilio APIs for voice, messaging, and video communication features. Collaborate with product … Twilio APIs (voice, SMS, video) and related integrations. Proven ability to build and work with real-time, event-driven systems. Solid grasp of RESTful API design and microservice architecture. Hands-on experience with AWS serverless technologies including DynamoDB, Lambda, and API Gateway. Familiarity with CI/ ...

Join a high growth international SaaS business as an AI Platform Engineer, where you will design, build, and operate the AI platform that underpins our clinets conversational assistant and wider AI initiatives. You will take responsibility for the runtime, infrastructure, and operational foundations underpinning our RAG pipelines, LLM orchestration … tolerance, caching, and autoscaling. Maintain CI/CD pipelines through GitHub and Azure DevOps. Automate embedding generation and knowledge base synchronisation. Embed secure-by-design principles, including IAM, encryption, and safe data flows. Mature governance practices, including versioning, audit logging, and compliance. What You'll Bring Proven enterprise delivery ...

platform and influence engineering strategy Work within a senior, AI-first engineering environment KEY POINTS Principal-level position with significant technical ownership Leading the design and development of a modern platform rebuild Strong focus on Node.js, TypeScript, React and cloud technologies Opportunity to shape engineering standards, architecture … role where you'll help shape the future of a modern, large-scale platform whilst remaining hands-on with development. You'll lead the design and delivery of scalable backend services, APIs, integrations and data flows, whilst providing architectural guidance across the wider engineering team. Although the role ...

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 ...

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 ...

architecture of key strategic initiatives across Fourth. Working as an embedded member of delivery teams, you will provide hands-on architectural leadership, helping engineers design, build and evolve scalable, maintainable and resilient software solutions.You will apply Fourth's application architecture standards, patterns and engineering principles, whilecontributing to their ongoing … practical delivery experience.· Produce architectural designs, decision records, and technical documentation that clearly communicate solution intent and support long-term maintainability.· Participate in architecture, design, and code reviews, providing constructive feedback and helping ensure consistency with established architectural principles.· Collaborate with business, product, engineering, and fellow architects to understand ...

skilled Java Software Engineer with a growing interest and demonstrated exposure to AI/ML integration. This role is primarily Java-centric — you will design and build cloud-native microservices on our BPA (Beyond Policy Administration) platform — with the expectation that you actively apply AI tooling and patterns … prototype level. Role Details Location: London Experience: 4–7 years of overall software engineering experience Engagement Model: Full-time, Product Engineering Job Responsibilities Design and implement RESTful APIs and microservices using Java 17+ and Spring Boot 3.x. Build and maintain business logic within the BPA platform, ensuring correctness, performance ...

their career in Solution Architecture or is ready to transition from Business Analysis or Integration Developmen t into a role where you'll help design innovative enterprise integration solutions for a diverse client base. Working alongside experienced Solution Architects and delivery teams, you'll gain valuable exposure to enterprise … integration projects while developing your expertise in solution design, architecture best practices, and modern iPaaS technologies. This is a fantastic opportunity for someone who enjoys combining technical knowledge with business engagement and wants to develop into a senior architecture role. Key Responsibilities Support the design and documentation ...

Develop and maintain high-quality software applications using .NET (4.5+/.NET Core) and Python. Collaborate with cross-functional teams to gather requirements and design effective solutions. Provide support to team members and stakeholders to ensure smooth project execution. Liaise with technical and business colleagues to understand functional requirements … deliver solutions that align with business objectives. Utilise your understanding of Web Services (REST, SOAP) to design and document APIs effectively. Work with MS SQL Server, including TSQL, SSIS, SSRS for database management and reporting. Utilise version control tools such as Git/Bitbucket and job scheduling tools like ...

teams to understand how they use the platform, debug their issues, and shape a roadmap that balances immediate needs with long-term architecture.You will:Design and build the sandboxing platform, client library, and API surface for secure code execution across containerized and virtualized environmentsEnsure strong isolation, security … maintain a product roadmap for sandboxing, balancing immediate needs against long-term architectural investmentLead architecture reviews and own projects end-to-end, from design through deployment, in fast-paced cross-functional settingsIdeally you'd have:4+ years of experience building high-performance systems software, with meaningful time spent maintaining ...

Development Manager - Digital Platform & API Location: Epsom, Surrey (Hybrid - 2 days office/3 days work from home) Position Overview Are you an agile digital delivery specialist looking to shape the future of platform services across a progressive business? We are seeking a Development Manager - Digital Platform & API … high-value transformation projects with continuous operational BAU demands. Key Responsibilities Product Ownership & Strategy: Lead the roadmap, product backlog, and feature prioritization for our API integration layer and a suite of around 20 application platforms, including flagship digital finance tools. Outsourced Delivery & Vendor Management: Direct external software providers ...

working on the underlying systems that make complex visualisations fast, accurate, and scalable. The challenges range from rendering performance and interaction design through to algorithms, graphics, API design, and numerical correctness. What you’ll be doing Designing and building core charting features used by developers around … exceptionally high technical standards High levels of ownership and autonomy Small team, significant impact Opportunity to deepen expertise in performance, graphics, visualisation, and systems design Package Salary up to £200,000 Hybrid working (London) Private healthcare Pension Additional benefits If you’re interested in building the technology behind modern ...

must already have commercial experience working this way. You'll remain very hands-on with C#/.NET development while also contributing to software design, architecture and technical decisions. You'll work closely with the CTO, Head of Engineering and the original software author, gaining a deep understanding … Previous meaningful experience with WinForms Commercial TDD – Test first (Red/Green/Refactor) Strong automated testing Experience contributing to technical decisions and software design Ownership/modernisation of existing applications If you've previously worked with WinForms but have since moved into modern .NET, APIs or cloud development ...

must already have commercial experience working this way. You'll remain very hands-on with C#/.NET development while also contributing to software design, architecture and technical decisions. You'll work closely with the CTO, Head of Engineering and the original software author, gaining a deep understanding … Previous meaningful experience with WinForms Commercial TDD – Test first (Red/Green/Refactor) Strong automated testing Experience contributing to technical decisions and software design Ownership/modernisation of existing applications If you've previously worked with WinForms but have since moved into modern .NET, APIs or cloud development ...

must already have commercial experience working this way. You'll remain very hands-on with C#/.NET development while also contributing to software design, architecture and technical decisions. You'll work closely with the CTO, Head of Engineering and the original software author, gaining a deep understanding … Previous meaningful experience with WinForms Commercial TDD – Test first (Red/Green/Refactor) Strong automated testing Experience contributing to technical decisions and software design Ownership/modernisation of existing applications If you've previously worked with WinForms but have since moved into modern .NET, APIs or cloud development ...

must already have commercial experience working this way. You'll remain very hands-on with C#/.NET development while also contributing to software design, architecture and technical decisions. You'll work closely with the CTO, Head of Engineering and the original software author, gaining a deep understanding … Previous meaningful experience with WinForms Commercial TDD – Test first (Red/Green/Refactor) Strong automated testing Experience contributing to technical decisions and software design Ownership/modernisation of existing applications If you've previously worked with WinForms but have since moved into modern .NET, APIs or cloud development ...