51 to 75 of 340 API Design Jobs in England

Solution Architect (Principal Consultant)

Location
Greater London, England, United Kingdom
transformation and ensuring data is protected and used ethically. Talan UK & Ireland provides a range of consultancy and outsourcing capabilities including programme management, market design and governance. We also have extensive and award-winning capabilities across cyber security, data privacy and digital transformation. We are IIP Gold accredited … recruiting an ambitious and technically accomplished Solutions Architect to join our Digital business unit as a Principal Consultant. You will lead the design and delivery of scalable, secure, and cloud-native platforms across Energy (including Low Carbon and UK regulatory systems), Financial Services, Public Sector, and Healthcare domains. This ...

Senior Manager- Software Engineering

Location
Greater London, England, United Kingdom
will be a hands‐on technical leader who defines direction, raises engineering standards, and delivers measurable product outcomes, all while remaining deeply involved in design and development. This is not a traditional people‐management or delivery‐management role—here, you will write code, architect solutions, lead complex projects … role is perfect for leaders seeking high‐growth, product‐driven environments, who are passionate about distributed systems, and who want to directly influence the design of secure, scalable, and resilient infrastructure while cultivating top engineering talent. What You’ll Do: Architect and design scalable, resilient, high‐performance backend ...

Equity Derivatives Risk Developer

Location
Greater London, England, United Kingdom
latency services, large-scale data pipelines, distributed compute, and the APIs and interfaces on top of them.**Key Responsibilities****Platform and Systems Engineering*** Design, build, and own the firm's risk calculation and exposure aggregation services, from position capture through to delivered risk numbers.* Develop real-time and intraday … operating production systems, with deep expertise in Python and at least experience in one systems language* Strong grounding in distributed systems, concurrency, service design, and API design; you have owned systems in production, not just written code for them.* Solid engineering discipline: automated testing, code review ...

Principal Engineer

Location
Greater London, England, United Kingdom
grow, develop and fulfil your potential with meaningful careers. ## **ROLE SUMMARY:**We are looking for a Principal Engineer with strong architecture and system design skills to build and maintain administrative platforms across on-premises and cloud environments. You will help us design, build, and operate secure, reliable … expertise in .NET/C#, AWS, and Microsoft SQL Server. You will play a key role within our technology team, contributing to the architecture, design, development, deployment, operation, and ongoing maintenance of our systems. **WHAT YOU'LL BE DOING:*** Design and build highly available enterprise applications, applying strong ...

Software Architect / Senior Developer

Location
Horsham, England, United Kingdom
software development Strong expertise in .NET development, C#, and Visual Studio Experience developing .NET based web services and distributed systems Demonstrated ability to design and implement scalable, maintainable software architectures Experience with architectural patterns (microservices, event-driven, layered architecture, etc.) Strong understanding of software design principles (SOLID …/CD pipelines Familiarity with security architecture principles and threat modeling Experience in the cybersecurity, forensics, or defense technology sectors Understanding of database design and data architecture patterns Experience with API design and RESTful/GraphQL architectures Knowledge of performance optimization and scalability patterns Formal architecture training ...

Senior Manager of Software Engineering -FI Electronic Trading Real-Time Position & Risk TechLead

Location
Greater London, England, United Kingdom
reliability, testability, and production readiness. You will mentor engineers and help grow a team that delivers safely at high velocity. Job Responsibilities Lead the design and evolution of the real-time position and risk platform, including architecture, patterns, performance, and resilience Deliver real-time position keeping capabilities across trade … tradeoffs clearly in business terms Raise engineering standards across coding practices, testing strategy, CI/CD quality gates, release discipline, and production readiness Drive design reviews and execution discipline to ensure scalable, maintainable solutions Mentor engineers and support hiring, onboarding, and team development Required Qualifications, Capabilities, and Skills Strong ...

Agentforce Operations FDE

Location
Greater London, England, United Kingdom
data grounding infrastructure using RAG (Retrieval‐Augmented Generation), vector databases, search indexes, and knowledge bases to supply agents with accurate enterprise context. Enterprise Integration & API Management: Develop and maintain custom APIs (REST, GraphQL, webhooks) and integration pipelines connecting AFO/Agentforce to Salesforce Data Cloud (Data 360), cloud warehouses … Deep experience with LLM orchestration, prompt tuning, and building RAG pipelines, vector search indexes, and knowledge base retrievers for enterprise data. Multi‐Agent Systems & API Mastery: Practical experience with API design (REST/SOAP/webhooks) and modern agent protocols (e.g., MCP, tool calling, or event‐driven ...

Senior Full Stack Developer/AI Builder

Location
Woodbridge, England, United Kingdom
consistent user-interface patterns. Integrate front-end experiences securely with APIs and identity services, applying accessibility, browser compatibility, performance, and secure coding practices. Design, build, and maintain Node.js services and application business logic, including clear, versioned, and maintainable APIs. Implement PostgreSQL data access and controlled database changes, with appropriate … error handling, logging, validation, and audit capabilities. Implement and maintain API exposure and integration patterns using Kong, design REST APIs and OpenAPI 3.1 specifications, and maintain API documentation and reusable integration patterns. Implement authentication and authorisation requirements across front-end and back-end components, protect sensitive data ...

Agentforce Operations FDE

Location
Greater London, England, United Kingdom
data grounding infrastructure using RAG (Retrieval-Augmented Generation) , vector databases, search indexes, and knowledge bases to supply agents with accurate enterprise context. Enterprise Integration & API Management: Develop and maintain custom APIs (REST, GraphQL, webhooks) and integration pipelines connecting AFO/Agentforce to Salesforce Data Cloud (Data 360), cloud warehouses … Deep experience with LLM orchestration, prompt tuning, and building RAG pipelines, vector search indexes, and knowledge base retrievers for enterprise data. Multi-Agent Systems & API Mastery: Practical experience with API design (REST/SOAP/webhooks) and modern agent protocols (e.g., MCP, tool calling, or event-driven ...

Lead Software Architect

Location
Greater London, England, United Kingdom
coding standards. Provide technical leadership, coaching and mentoring to developers and engineers. Oversee development to ensure solutions remain aligned with agreed architecture and design principles. Establish and promote engineering best practice across areas including Agile delivery, test-driven development, automated testing and continuous integration. Design effective REST APIs … systems architecture. Strong experience with Java and Spring Boot and Kotlin . Experience designing microservices and distributed architectures . Good knowledge of REST API design and system integration. Experience working with eCommerce, marketplace or comparable digital platform architectures . Strong understanding of object-oriented analysis, design principles ...

Full Stack Engineer | Java, Spring Boot and Angular

Location
Tipton, England, United Kingdom
joiners preferred Job Summary We are looking for an experienced Full Stack Engineer with strong expertise in Java, Spring Boot, Angular and TypeScript to design, develop and maintain secure, scalable and high-performance enterprise web applications. The ideal candidate must have hands-on experience in backend engineering, frontend architecture … API development, event-driven systems, databases, containerization, testing and CI/CD. The role also requires strong ownership, technical problem-solving, collaboration and mentoring capabilities. Job Requirements Bachelors degree in Computer Science, Engineering or a related field, or equivalent education and professional experience. Minimum 10 years of software development ...

Senior Software Engineer (Kotlin, Spring Boot)

Location
Leeds, England, United Kingdom
openly, and taking pride in delivering software that makes a real business impact. What You'll Do As a Senior Backend Engineer, you will: Design, build and maintain scalable, secure and resilient backend systems using Kotlin and Spring Boot Lead technical design and architectural discussions, ensuring solutions … have strong commercial experience with: Spring Boot and the wider Spring ecosystem Spring Data JPA/Hibernate Spring Security including OAuth2 and JWT REST API design and implementation Microservices and distributed system design SQL databases with strong query optimisation skills NoSQL databases Messaging technologies such as Kafka ...

Senior Software Engineer (Kotlin, Spring Boot)

Location
Manchester, England, United Kingdom
openly, and taking pride in delivering software that makes a real business impact. What You'll Do As a Senior Backend Engineer, you will: Design, build and maintain scalable, secure and resilient backend systems using Kotlin and Spring Boot Lead technical design and architectural discussions, ensuring solutions … have strong commercial experience with: Spring Boot and the wider Spring ecosystem Spring Data JPA/Hibernate Spring Security including OAuth2 and JWT REST API design and implementation Microservices and distributed system design SQL databases with strong query optimisation skills NoSQL databases Messaging technologies such as Kafka ...

Senior Software Engineer (Kotlin, Spring Boot)

Location
Greater London, England, United Kingdom
openly, and taking pride in delivering software that makes a real business impact. What You'll Do As a Senior Backend Engineer, you will: Design, build and maintain scalable, secure and resilient backend systems using Kotlin and Spring Boot Lead technical design and architectural discussions, ensuring solutions … have strong commercial experience with: Spring Boot and the wider Spring ecosystem Spring Data JPA/Hibernate Spring Security including OAuth2 and JWT REST API design and implementation Microservices and distributed system design SQL databases with strong query optimisation skills NoSQL databases Messaging technologies such as Kafka ...

Senior Full Stack Java Engineer

Location
Greater London, England, United Kingdom
Project description As a Senior Full Stack Java Engineer within the US Corporate Loans POD, you will design, develop, and deliver enterprise integration solutions connecting Loan IQ with upstream and downstream platforms. You will leverage modern cloud-native technologies, AI-assisted development tools, and Agentic AI practices to improve … building AI agents and intelligent engineering solutions that automate and enhance Software Development Lifecycle (SDLC) processes, improving developer productivity and accelerating delivery outcomes. Responsibilities Design and develop REST APIs, event-driven integrations, and messaging interfaces. Build and maintain integrations between Loan IQ and enterprise applications. Design and implement ...

Solution Architect (Data and AI Platform)

Location
Greater London, England, United Kingdom
strategies that deliver secure, governed, and high-performing data platforms that create real business impact?** **About our Team**The TIO Architecture Team is the design and architecture function of Elsevier's Technology Infrastructure and Operations organization and is responsible for architectural design and consultancy across a multitude … both AI developer tooling and end user GenAI technologies).**About the Role**This Solution Architect role is an exciting opportunity to lead the design and evolution of Elsevier’s Operational Data Platform. You will work alongside an embedded engineering team to architect Snowflake-based data warehouse solutions ...

Solution Architect (Data and AI Platform)

Location
Greater London, England, United Kingdom
strategies that deliver secure, governed, and high-performing data platforms that create real business impact?** **About our Team**The TIO Architecture Team is the design and architecture function of Elsevier's Technology Infrastructure and Operations organization and is responsible for architectural design and consultancy across a multitude … both AI developer tooling and end user GenAI technologies).**About the Role**This Solution Architect role is an exciting opportunity to lead the design and evolution of Elsevier’s Operational Data Platform. You will work alongside an embedded engineering team to architect Snowflake-based data warehouse solutions ...

Lead Application Architect

Location
Greater London, England, United Kingdom
Bestway is modernising its application estate towards cloud-native architecture. We are looking for a hands‐on Lead Application Architect to own application-level design, define our engineering standards, and introduce AI-assisted development practices across the team. You will sit between our Solution Architects, who define high-level … designs, and the development team, who deliver them. You will turn HLDs into well‐documented, implementable designs (Low-Level Design) and make sure the code that results is consistent, secure and maintainable. About Bestway Bestway Group is a diversified multinational family owned business with annualised turnover in excess ...

Software Architect (UK)

Location
Horsham, England, United Kingdom
negotiable depending on experience) Responsibilities and Duties The Software Architect role requires a professional who combines deep technical expertise with strategic vision to design and guide the implementation of scalable, maintainable software systems. They will be responsible for defining architectural standards, evaluating technology choices, and ensuring development teams have … software development Strong expertise in .NET development, C#, and Visual Studio Experience developing .NET based web services and distributed systems Demonstrated ability to design and implement scalable, maintainable software architectures Experience with architectural patterns (microservices, event‐driven, layered architecture, etc.) Strong understanding of software design principles (SOLID ...

Senior Integration and Solution Architect

Location
Manchester, England, United Kingdom
principles, reference architectures, patterns,standardsand reusable components. Translate business, data and operational requirements into clear solution architectures, designdecisionsand technical roadmaps. Set the approach to API design, data contracts, message design, asynchronous processing, error handling, security,observabilityand resilience. Assess architectural options and technical trade-offs, providing clear recommendations … partners and delivery teams. 2. Solution design and technical assurance Design practical,scalableand maintainable integrations using Azure Integration Services, including Azure Service Bus,APIsand related Azure services. Provide architectural assurance at key design, build,testand deployment points, ensuring solutions conform to agreed standards. Review technical designs,codeand ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
Senior Software Engineer, you'll be one of the most experienced engineers on the team. You'll work in React and our design language, and on the server and the services behind it. You'll take on the harder problems, and you'll raise the standard around you through … important code stays testable and the products stay easy to change. What You'll Be Doing Work with agile cross-functional teams to design, develop and maintain the online ordering web experience, with accessibility and performance built in. Work with our design system and PERi-Verse design ...

Senior Fullstack Developer — Java or Kotlin, React and TypeScript

Location
Manchester, England, United Kingdom
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 ...

Senior Fullstack Developer — Java or Kotlin, React and TypeScript

Location
Greater London, England, United Kingdom
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 ...

Senior Partner Agent Architect (UK)

Location
Greater London, England, United Kingdom
Architect at Parloa, you will operate at the intersection of enterprise solution architecture, conversational AI, and partner enablement, helping strategic partners and enterprise customers design, implement, and scale AI-driven customer experiences.This is a highly consultative, customer-facing role where you will guide partners and clients through solution discovery … solution architecture, enterprise integration design, conversational architecture, and implementation strategy for enterprise AI Agents. You will design how Parloa’s platform integrates into complex enterprise environments, solve multi-system integration challenges, and apply systems thinking to build reliable, scalable AI solutions.While you bring strong technical depth ...

Senior Software Engineer - Java, Node.js & AWS

Location
Manchester, England, United Kingdom
pride in delivering software that makes a real business impact. What You'll Do As a Senior Software Engineer - Java, Node.js & AWS, you will: Design, build and maintain scalable, secure and resilient backend systems using modern Java, Node.js and the Spring ecosystem. Lead technical design and architectural discussions … Streams, Lambdas and Optional Spring Boot and the wider Spring ecosystem NodeJS Spring Data JPA/Hibernate Spring Security including OAuth2 and JWT REST API design and implementation Microservices and distributed system design SQL databases with strong query optimisation skills NoSQL databases Messaging technologies such as Kafka ...