1 to 25 of 188 API Design Jobs in the UK excluding London

Kong API Gateway Specialist

Hiring Organisation
Infoplus Technologies UK Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£400.00 - £450.00 per day
Summary We are seeking an experienced Kong API Gateway Specialist to lead the development, implementation, and governance of our enterprise API ecosystem. This role will be responsible for establishing API governance standards, designing and managing API lifecycle processes, and driving the adoption of best practices across … integration and middleware platforms. The ideal candidate will possess deep expertise in Kong API Gateway, API management, security, integration architecture, and governance frameworks. They will work closely with enterprise architects, development teams, security teams, and business stakeholders to ensure APIs are secure, scalable, reusable, and aligned with organizational ...

Data Engineer JBLE1 NI

Hiring Organisation
Ocho
Location
Belfast, UK
Glance Mid-level Data Engineer role within a growing enterprise data lake platform team Core stack: AWS, TypeScript, Python, with ETL/ELT and API design Hybrid working, Belfast Salary up to £45,000 Genuine end-to-end scope: ingestion, egress, API design and React frontend … maintaining ETL/ELT ingestion and egress patterns that reduce manual bottlenecks and free up engineering time for higher-value work. You'll design and implement APIs, contribute to React frontend work, collaborate closely on AWS cloud architecture, and help instrument the platform with strong observability. You'll also ...

Technical Product Manager

Hiring Organisation
HUKM Development
Location
Buckinghamshire, England, United Kingdom
Probation: 6 months About the role As a Technical Product Manager at HUKM, you will lead the development and delivery of backend and API-driven products. You will manage development pods, translate business requirements into technical solutions, and drive execution through agile delivery. This is a hands-on technical … development pods of 15 to 20 engineers, ensuring effective collaboration and delivery Define product roadmaps, prioritise features, and maintain product backlogs for backend and API initiatives Design and document API specifications, data models, and system architecture alongside engineering teams Run sprint planning, daily standups, sprint reviews ...

Backend/API Engineer - Telecoms & Cloud JBLE1 NI

Hiring Organisation
VANRATH
Location
Belfast, UK
Description My client, a growing Belfast-based telecommunications and technology organisation, is hiring an API Engineer to join their existing technology team. This is an excellent opportunity for an experienced Backend/API Developer to work across a varied technology environment, developing integrations and APIs that support hosted … business-system integrations, providing the successful candidate with the opportunity to work on a diverse range of technology and integration projects. As an API Engineer, you will design, develop and maintain robust APIs and backend services that enable Clarity's internal platforms, customer systems and third-party applications ...

Backend/API Engineer - Telecoms & Cloud

Location
Belfast City District, Northern Ireland, United Kingdom
Description My client, a growing Belfast-based telecommunications and technology organisation , is hiring an API Engineer to join their existing technology team. This is an excellent opportunity for an experienced Backend/API Developer to work across a varied technology environment, developing integrations and APIs that support hosted … business-system integrations , providing the successful candidate with the opportunity to work on a diverse range of technology and integration projects. As an API Engineer , you will design, develop and maintain robust APIs and backend services that enable Clarity's internal platforms, customer systems and third-party applications ...

Full Stack Engineer ( AI ) JBLE1 NI

Hiring Organisation
Ocho
Location
Belfast, UK
word matters here. The team is not looking for a backend engineer who occasionally touches the frontend, or a React specialist who makes small API changes. You will be expected to take a problem from initial product discussion and technical design through frontend, backend, cloud infrastructure, testing … which makes this an interesting opportunity for engineers who are already working this way and want an environment that actively encourages it. Key Responsibilities Design, build and operate production software end to end, owning both frontend and backend from initial design through to deployment Build sophisticated React ...

Senior Java Backend Engineer IRC299953

Location
Glasgow, Scotland, United Kingdom
Description We're looking for an experienced Backend Engineer to design and build robust, scalable microservices. You'll work across the full backend stack - from API design through to production-grade integration testing - using modern Java and Spring technologies. Mobility: Comfortable working from the Glasgow office … Spring Boot 3 Proven experience building and maintaining microservices architectures Practical experience with Kafka (producers, consumers, event-driven patterns) Strong understanding of REST API design best practices Proficiency with Gradle for build management Familiarity with MapStruct and Feign Working knowledge of domain-driven design (DDD) patterns ...

Java Backend Engineer IRC299950

Location
Glasgow, Scotland, United Kingdom
Gradle, Java, Kafka, REST APIs, Spring Boot We’re looking for an experienced Backend Engineer to design and build robust, scalable microservices. You’ll work across the full backend stack — from API design through to production‐grade integration testing — using modern Java and Spring technologies. Requirements Strong … Spring Boot 3 Proven experience building and maintaining microservices architectures Practical experience with Kafka (producers, consumers, event‐driven patterns) Strong understanding of REST API design best practices Proficiency with Gradle for build management Familiarity with MapStruct and Feign Working knowledge of domain‐driven design (DDD) patterns ...

Senior Java Backend Engineer

Hiring Organisation
GlobalLogic UK&I
Location
Glasgow, Lanarkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
looking for an experienced Backend Engineer to design and build robust, scalable microservices. You'll work across the full Back End stack - from API design through to production-grade integration testing - using modern Java and Spring technologies. Requirements Strong hands-on experience with Java 17+ and Spring … Boot 3 Proven experience building and maintaining microservices architectures Practical experience with Kafka (producers, consumers, event-driven patterns) Strong understanding of REST API design best practices Proficiency with Gradle for build management Familiarity with MapStruct and Feign Working knowledge of domain-driven design (DDD) patterns An integration ...

Software Engineer III - Java

Location
Glasgow, Scotland, United Kingdom
solutions that empower both our customers and our developers. Job Summary: As a Java Software Engineer in the Payments Developer Portal team, you will design, develop, and maintain backend services that power our public-facing web portal. You will work closely with product partners and technical teams to deliver … respect while advancing modern engineering practices. Job Responsibilities: Collaborate with technical teams, product partners, and stakeholders to deliver customer-facing capabilities and internal enablement Design, develop, and maintain secure, high-quality production Java services (APIs and supporting components), reviewing and debugging code Contribute to decisions influencing product design ...

Lead Java Developer

Location
Swansea, Wales, United Kingdom
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 … South Wales - three days per week on-site Role Overview We are seeking an experienced and technically strong Lead Java Developer to lead the design, development, and delivery of scalable, secure, and high-performance enterprise applications. The ideal candidate will have extensive hands-on experience with Java and Spring ...

Application Developer

Hiring Organisation
Experis
Location
Sheffield, South Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£420 - £473/day
MUST BE ELIGIBLE FOR BPSS MUST BE PAYE THROUGH UMBRELLA We are looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures. This role focuses on building secure, scalable identity and access workflows across … APIs, Pub/Sub pipelines, and cloud-native applications. You will collaborate closely with tech leads, Cloud Security, DevOps, and Application Engineering teams to design and implement robust IAM automation, identity lifecycle workflows, and secure service integrations that support enterprise-level cloud and Identity operations. Key Responsibilities 1. Identity ...

Solution Architect - Data & AI Specialist

Hiring Organisation
ITH Pharma
Location
Park Royal, London, Middlesex, United Kingdom
Employment Type
Permanent
Salary
£75000 - £85000/annum
experienced AI Architect who enjoys solving complex technical problems while staying close to delivery. This is a genuinely hands on role where you will design enterprise AI solutions, partner with senior stakeholders across the business and work alongside engineering teams to bring modern AI capabilities into production. … role where you can combine deep technical expertise with meaningful business impact, we would love to hear from you. ----------------------------------------- Key Responsibilities Architect Agentic Solutions: Design enterprise cloud applications, specializing in agentic AI platform components (orchestration, memory, tool integration, identity, guardrails, observability) and emerging Agentic Commerce. Lead Clients & Drive Growth ...

Senior Platform Engineer

Location
Reigate, England, United Kingdom
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 … bring Platform and controlplane engineering Practical experience designing and developing management and controlplane capabilities for lineofbusiness 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 ...

Senior Software Engineer

Hiring Organisation
The Portfolio Group
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 per annum
integration layer behind a new generation of AI-powered products. This is a genuinely full-stack engineering role, combining production-grade backend development, API design, AI integrations and frontend engineering. You'll work across the full application lifecycle, designing the services and interfaces that connect AI capabilities … products customers and colleagues use every day. You'll play a key role in building MCP integrations, agent-to-agent connectivity and robust API services, while also developing responsive, accessible interfaces in React and TypeScript. What you'll be doing Own the application and integration layer of AI products ...

Principal Software Engineer

Hiring Organisation
Epicor Software Corporation
Location
Bracknell, Berkshire, UK
Employment Type
Full-time
innovative AI concepts into enterprise-grade products trusted by enterprise customers. This is a hands-on engineering role, not a management position. You will design and build, set the technical bar for production quality, and provide the architectural judgement needed to take AI-driven products from promising prototype … designing for the incident nobody planned. This matters to us more than any specific framework. Distributed-systems fluency: service boundaries, transactional thinking, multi-tenant design, API design and versioning. Strong architectural communication - able to explain, document, and defend design decisions across teams, and to review others ...

Kong API Management

Hiring Organisation
E-Solutions IT Services UK Ltd
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£400.00 - £450.00 per day
Kong API Management/API Engineer London - 5 days/week onsite Required qualifications, capabilities, and skills · Programming languages: Advanced proficiency in one or more programming languages - Golang or Lua Script. · Cloud-native operations: Practical, hands-on cloud-native experience. · API management: Professional experience with API … management technologies (e.g., Apigee, Kong, or MuleSoft). · API design: Strong understanding of the OpenAPI Specification (OAS) for RESTful APIs. · API security: Hands-on experience securing APIs at the gateway, including OAuth 2.0, OpenID Connect (OIDC), JWT validation, key-auth, and mutual TLS (mTLS). · DevOps toolchain ...

Principal Software Engineer

Location
Peterborough, England, United Kingdom
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 ...

Director Data & Analytics API Experience - Data Services

Location
Belfast, Northern Ireland, United Kingdom
Director Data & Analytics API Experience - Data ServicesSkip to main contentBy clicking “Accept All Cookies,” you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts.# CareersDirector Data & Analytics API Experience - Data Services page is loaded## Director … Data & Analytics API Experience - Data ServicesApplylocations: Belfast - Millennium Housetime type: Full timeposted on: Posted Todayjob requisition id: 34591**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. ...

Application Developer

Location
Sheffield, England, United Kingdom
looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures . This role focuses on building secure, scalable identity and access workflows across Google Cloud Platform, integrating identity services with custom APIs, Pub/… pipelines, and cloud-native applications. You will collaborate closely with tech leads, Cloud Security, DevOps, and Application Engineering teams to design and implement robust IAM automation, identity lifecycle workflows, and secure service integrations that support enterprise-level cloud and Identity operations. Key Responsibilities: Identity Orchestration Design and implement ...

Senior Software Engineer, Embedded UI

Location
Cambridge, England, United Kingdom
feature or project simply because that problem needs to be solved and shipped. But that individual must work together with different engineering teams, UI design, product teams, and business leadership to make things happen, which means that engineers succeed here because they can maintain that independent spirit and motivation … inventing the world of streaming media. What is the role? As a Senior Software Engineer on the OS UI/SDK team, you will design, develop, and deliver engaging platform features — including screensavers, static and dynamic wallpapers, trivia, featured experiences, and AI-driven content initiatives — that reach millions ...

Java Software Engineer

Location
Manchester, England, United Kingdom
global growth trends driven by digital adoption and regulatory expansion across lottery and iGaming markets. Well, what about the team? Join our dynamic Sports API team (named Matchday), where you\'ll be at the forefront of creating our Online Sportsbook APIs that underpin the Bally Bet experience. … online entertainment! So, what will you be doing? Develop product features, updates and capabilities. Use TDD methodologies to produce high quality well documented code. Design and develop customer focussed solutions. Understand the goals and business objectives of your team and domain. Use agile methodologies and work together to meet ...

Director Data & Analytics API Experience - Data Services

Hiring Organisation
CME- Group
Location
Belfast, UK
Employment Type
Full-time
Director Data & Analytics API Experience - Data ServicesBackground: 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 as additional … 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 ...

Staff Backend Software Engineer

Location
City of Edinburgh, Scotland, United Kingdom
join the Product Platform team, which builds foundational components and cross-functional capabilities for our ecosystem. In this role, you will lead the design and implementation of critical API services powering our financial data ecosystem while modernizing our architecture to fuel European expansion. Key responsibilities and strategic impact … United Kingdom from the first day of employment. Please note that visa sponsorship is not available for this role. What You’ll Do Design, develop, and implement robust API services to support our rapidly growing European customer base. Lead architecture designs and product roadmap creation. Research and drive ...

Director Data & Analytics API Experience - Data Services JBLE1 NI

Hiring Organisation
CME Technology Support Services Ltd
Location
Belfast, UK
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 ...