76 to 100 of 202 API Design Jobs in the UK excluding London

GenAI Full-Stack Engineer Lead

Location
Belfast City District, Northern Ireland, United Kingdom
organisation to build scalable developer platforms, influence engineering strategy and drive the adoption of Generative AI and modern engineering practices. Key Responsibilities Drive the design and delivery of enterprise-scale applications supporting critical business functions and large user populations. Remain hands-on with software architecture, system design, code … containers, microservices and event-driven architectures. Strong understanding of distributed systems, resiliency patterns, scalability and performance engineering. Strong knowledge of SQL and NoSQL technologies, API design and integration patterns. Excellent communication and stakeholder management skills with the ability to influence technology decisions across numerous teams and organisations. Growth ...

Product Manager

Hiring Organisation
Randstad Digital
Location
Manchester, North West, United Kingdom
Employment Type
Contract
Contract Rate
£70 - £75 per hour
Lead Technical Product Manager - API & Platforms Location: Manchester, UK, Only 1 or 2 days to office Role Overview We are looking for a Lead Technical Product Manager to own and scale our core API platforms, backend microservices, and data tools. You will lead cross-functional engineering teams … build high-performance systems, improve developer experience, and integrate AI/data solutions across our global platform. Key Responsibilities Platform & API Strategy: Own the roadmap and backlog for core APIs and microservices, ensuring high availability, speed, and scalability. Technical & AI Execution: Work with engineers and data teams to design ...

Back-end Engineer (Senior)

Location
Bracknell, England, United Kingdom
This Role We're hiring a senior back-end engineer who owns real problems end-to-end and shapes how the team builds, from API design and data modeling through to service implementation, production reliability, and launch. You already use AI as part of how you think, build … test, and ship. You'll write code that moves money in production, design and modernize the backend services the platform runs on, and lead delivery of new capability as Xe rebuilds its platform layer. You'll work in a small team with direct access to product, compliance, and operations ...

Software Engineering Manager

Location
Bristol, England, United Kingdom
flow metrics, communicating timelines, dependencies, and risks early and transparently. Establish engineering guardrails across scope, quality, and non-functional requirements, enabling teams to design optimal solutions within them. Champion observability and operational excellence, ensuring system health, SLOs, and alerting are visible and actively managed. Partner with Tech Leads … Architects on system design and evolution, bringing structured thinking to complex, distributed environments. Foster a culture of ownership, collaboration, and continuous improvement, helping teams navigate technical and product challenges with clarity and purpose. Grow and develop engineers through coaching, feedback, hiring, and creating an environment that supports autonomy, mastery ...

Senior Technical Architect

Location
City of Edinburgh, Scotland, United Kingdom
digital, data and AI. We believe in tailored solutions, assembling expert teams to address each client's unique needs. Our services span strategy, design, technology and data & AI, ensuring seamless end-to-end delivery of platforms, products and services with real-world impact. Role Overview Storm ID has delivered … architecture, and the underpinning service model and technical approach required to enable future phases. That architecture is documented in both a PoC High Level Design and Full-Service High-Level Design, supported by Architecture Decision Records. The next phase requires: one or more iterations of the Full Service ...

Senior Kotlin Developer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
using Kotlin and Javaon the AWS Cloud platform, following best practice. In addition to Kotlin, this project utilises Typescript/Node.js using the GOV.UK Design System.Kubernetes and Docker to schedule and run services hosted on AWS Cloud. You'll join a Scrum Team of cross-functional skills working … including microservices and message-driven architectures NFR/Non-Functional requirement understanding and experience developing applications with this in mind Application/Digital Services Design experience Experience in software engineering practices like Code Reviews, CI/CD Pipelines and SOLID/DRY principals Hands-on developing/coding role ...

Full-Stack Data Engineer

Location
Glasgow, Scotland, United Kingdom
seeking someone to join our Data Obfuscation team as a Full Stack Developer – Data Engineering to design and deliver scalable, secure, and reusable data platforms and services that support enterprise data protection and obfuscation initiatives. In the Technology division, we leverage innovation to build the connections and capabilities that … innovating to better serve our clients and our communities in more than 40 countries around the world. What you'll do in the role Design and develop resilient on-prem and multi-cloud database solutions with Java, Spring Boot, Angular, and Python Develop high-performance solutions that efficiently handle ...

Cloud Engineer

Hiring Organisation
Hackajob Ltd
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent, Part Time
their core mission capabilities. Youll 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. Youll be encouraged to identify new ways of solving problems and get to work … these, but if not well 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 ...

Senior Java Developer (6 month contract)

Location
Belfast City District, Northern Ireland, United Kingdom
Greenfield build – no legacy codebase Cloud-native tech stack (Java, Spring Boot, AWS, GitHub Actions, Jenkins) Regulatory focus (MiFID II, EMIR, SFTR, etc.) Responsibilities Design and implement scalable, cloud-native backend components using Java and Spring Boot Collaborate with cross-functional teams to deliver features supporting transaction reporting … post-trade transparency, and venue/instrument data flows Translate regulatory requirements into robust, auditable technical solutions Participate in Agile ceremonies and contribute to design, development, testing, and documentation Write unit, integration, and functional tests; support automated test pipelines Deploy services in AWS and contribute to CI/ ...

Context Plane Python Engineer

Location
Auchentibber, Scotland, United Kingdom
hands‐on senior role with real architectural scope, active cross‐functional collaboration, and strong support for internal mobility and upskilling. Job responsibilities Design, build, and maintain backend services and data pipelines in Python that load firm knowledge into a knowledge graph and vector store Build and evolve the serving … firm, including enterprise AI and large language model gateways Own quality across your components: automated testing, code reviews, observability, and resilient, secure service design Partner with Corporate Technology AI, product, and data science colleagues to translate concrete use cases into working, measurable capabilities Contribute to design discussions ...

Context Plane Python Engineer

Location
Glasgow, Scotland, United Kingdom
hands‐on senior role with real architectural scope, active cross‐functional collaboration, and strong support for internal mobility and upskilling. Job responsibilities Design, build, and maintain backend services and data pipelines in Python that load firm knowledge into a knowledge graph and vector store Build and evolve the serving … firm, including enterprise AI and large language model gateways Own quality across your components: automated testing, code reviews, observability, and resilient, secure service design Partner with Corporate Technology AI, product, and data science colleagues to translate concrete use cases into working, measurable capabilities Contribute to design discussions ...

Infrastructure Developer

Hiring Organisation
Ncounter
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£110,000 - £130,000 per annum
services and automation that connect complex infrastructure environments. The wider goal is to remove manual infrastructure processes and replace them with reliable, self-service, API-driven services. You will design and develop integrations across areas including bare-metal compute, networking, storage, cloud and workload platforms. A major part … role will involve building API services around a central CMDB, creating a reliable source of truth that can drive automated provisioning, configuration and infrastructure lifecycle management. Responsibilities will include: • Building production-grade services and automation primarily in Python • Designing REST APIs and integration layers across infrastructure platforms • Developing CMDB ...

Scala Engineer | SC Cleared | London | £620 pd

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£620.00 per day
services while supporting the ongoing evolution of the platform architecture. Key responsibilities Help define the future vision and consolidation strategy for Attribute Reputation services Design and develop scalable, secure and testable backend solutions Build and enhance REST APIs that deliver attribute insights to digital services Improve existing services … simplified technology stacks where appropriate Collaborate with product owners, business analysts, data engineers and wider teams to develop effective solutions Contribute to database design and application development with strong security and data protection principles Support operational excellence through monitoring, reliability and incident resolution Work within a continuous integration environment ...

Senior AI Engineer

Location
City of Edinburgh, Scotland, United Kingdom
Consultant) to join our Technology Delivery team. In this role, you’ll combine deep expertise in AI/ML engineering and software development to design, build, and deploy advanced generative AI and agentic systems for leading financial services clients. You’ll work hands‐on across the full AI engineering … client expectations. What You’ll Do Architect and develop autonomous AI systems leveraging multi‐modal large language models across text, image, audio, and video Design and implement agentic workflows using prompt engineering, Retrieval‐Augmented Generation (RAG), APIs, and enterprise data integrations Fine‐tune, optimize, and deploy large language ...

Senior Full Stack Engineer

Hiring Organisation
Roku
Location
Cambridge, Cambridgeshire, UK
Employment Type
Full-time
join the Developer Platform team and build AI-enabled web applications and services that improve app development and management workflows. This role will design and deliver full stack solutions that support external partners and internal stakeholders across the Roku ecosystem. You will contribute across frontend and backend systems, with … drive an agent, verify its output, and ramp on an unfamiliar codebase with an agent helping you. What are the responsibilities of the role? Design and build full stack web applications using React and Node.jsIntegrate AI capabilities including LLM-driven experiences where appropriateDevelop APIs and microservices that connect tools ...

Senior Ruby on Rails Developer

Hiring Organisation
Run-Time Group Ltd
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Permanent
fast-moving, product-centric environments. Key requirements: Ruby & Ruby on Rails Full-Stack Engineering: JavaScript, TypeScript, React, Hotwire, Stimulus Node.js & React exposure beneficial API Design: REST, GraphQL, external integrations Data Stores: PostgreSQL, MySQL, Redis, Elasticsearch Async Processing: Sidekiq, Resque Cloud & DevOps: AWS, Heroku, Docker, CI/CD pipelines … Testing & Quality: RSpec, Capybara, TDD methodologies Security, performance tuning, and system hardening AI & LLMs: API integration, prompt engineering, AI-enhanced features and developer tooling Responsibilities: Owns end-to-end system architecture, ensuring solutions are scalable, maintainable, and delivered at pace. Partners closely with Product, Design, and Commercial teams ...

Data Integration Lead

Location
Manchester, England, United Kingdom
play a key role in both delivery and the growth of PACT’s Data Integration capability. Purpose of the role To lead the design, build and delivery of high-quality data integrations within transformation programmes, ensuring secure, scalable and supportable solutions that meet partner needs. Key Responsibilities 1. Data … delivery leadership (primary focus) Lead data integration workstreams or full integration project components. Define delivery approaches, plans, milestones, technical assurance and governance Lead the design, build, testing and deployment of integrations across programmes Manage dependencies between source and target systems, data flows, interfaces and wider programme delivery Manage technical ...

Principal DevOps engineer

Location
City of Edinburgh, Scotland, United Kingdom
opportunity is based in Edinburgh and offers the chance to shape the future of Aberdeen’s cloud and DevOps capabilities. You will lead the design and implementation of automated solutions across software development, deployment and infrastructure management, with a strong focus on Azure and AKS. Working closely with engineers … leading DevOps practices. Hands‐on expertise with Git, CI/CD pipelines, infrastructure as code and Azure administration. Experience with microservices, containerisation and REST API design, development and testing. Expertise in at least one object‐oriented programming language, with C# preferred. Interest in financial services, investment management ...

Principal DevOps engineer

Location
City of Edinburgh, Scotland, United Kingdom
opportunity is based in Edinburgh and offers the chance to shape the future of Aberdeen’s cloud and DevOps capabilities. You will lead the design and implementation of automated solutions across software development, deployment and infrastructure management, with a strong focus on Azure and AKS. Working closely with engineers … leading DevOps practices.* Hands-on expertise with Git, CI/CD pipelines, infrastructure as code and Azure administration.* Experience with microservices, containerisation and REST API design, development and testing.* Expertise in at least one object-oriented programming language, with C# preferred.* Interest in financial services, investment management ...

Software Engineer - Android Developer

Location
Cheltenham, England, United Kingdom
experience with: Android development (Kotlin, Jetpack Compose) Backend development (Rust, Python or Go) Git and modern development workflows Docker + CI/CD pipelines API design (REST/OpenAPI) Working in secure or controlled environments Nice to have: AWS or Azure experience Kubernetes Agile delivery experience Secure coding ...

Software Engineer - Backend Developer

Location
Manchester, England, United Kingdom
deployed via Kubernetes and AWS environments. Strong working knowledge of event-streaming tools like Apache Kafka or comparable messaging backbones. Deep understanding of RESTful API design, external integrations, distributed transaction handling, and canonical data models. solid grasp of TDD/automated testing, CI/CD pipelines, and active ...

AWS Cloud Engineer - Hybrid - MCR or LDN

Hiring Organisation
Anson Mccade
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
Kanban, SAFe or XP Strong communication, collaboration and problem-solving skills Willingness to learn new technologies and work across different project environments Microservices and API design Docker, Kubernetes, EKS or ECS AWS monitoring, observability and FinOps CI/CD tools such as Jenkins, Bamboo, TeamCity or Bitbucket Candidates ...

Software Engineer - Backend Developer

Hiring Organisation
Randstad Digital
Location
Manchester, North West, United Kingdom
Employment Type
Contract
Contract Rate
£70 - £72 per hour
deployed via Kubernetes and AWS environments. Strong working knowledge of event-streaming tools like Apache Kafka or comparable messaging backbones. Deep understanding of RESTful API design, external integrations, distributed transaction handling, and canonical data models. solid grasp of TDD/automated testing, CI/CD pipelines, and active ...

Development & Technical Manager

Location
Aberdeen City, Scotland, United Kingdom
based platforms.* Strong understanding of cloud platforms (Azure preferred; AWS or GCP acceptable).* Experience with modern web technologies and frameworks.* Solid understanding of API design, integration patterns, and modern authentication standards (OAuth2, OpenID Connect, JWT).* Experience with CI/CD pipelines, Git-based workflows, and automated ...

Senior AWS API & Integration Engineer

Location
Northampton, England, United Kingdom
Applications (C&CA) practice as a Solution Engineer supporting business-critical acquiring and chargeback services. Working within a collaborative delivery environment, you will help design and build scalable, resilient solutions that enable clients to respond to evolving business needs with confidence. In line with our vision, Consult with Purpose. … Company offices, client sites, and your home; noting that you will be unable to work at home 100% of the time. Key Responsibilities: Design and deliver scalable, secure, and resilient business services that support critical acquiring and chargeback processes. Build and maintain event-driven solutions that enable reliable processing ...