16 of 16 OpenAPI Jobs in the UK excluding London

Senior Backend Java Engineer

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £575 per day
Azure DevOps) Comfortable working in agile, cross-functional teams Has current SC clearance, or is willing and eligible to undergo SC clearance Desirable OpenAPI/Swagger Liquibase or Flyway Gradle Kafka Observability/monitoring experience Exposure to Kubernetes Some awareness of React/TypeScript What we need from candidates ...

Senior Java Developer

Hiring Organisation
Hays
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
Kafka, SQS) Serverless technologies (e.g., AWS Lambda) Monitoring/logging tools (ELK, Splunk, Dynatrace) ORM technologies (JPA, Hibernate) API documentation tools (e.g., Swagger/OpenAPI) Test tools (Postman, Selenium, Axe) Exposure to AI-assisted development tools (e.g., GitHub Copilot) In return, you will be rewarded with a market leading ...

Backend Software Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
have: Active Security Clearance (SC) Experience in coding-intensive environments (fintech, payments, digital banking, capital markets/trading) API specification using Swagger/OpenAPI Gradle build systems Liquibase (or similar) for database migrations/versioning Kafka or other event-streaming platforms React and TypeScript If you're interested ...

Java Software Engineer

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
containerisation CI/CD pipelines (Jenkins or similar) Working in agile, multi-disciplinary teams Desirable experience Kafka Liquibase or similar migration tooling Swagger/OpenAPI Gradle React TypeScript Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have ...

Java Developer

Hiring Organisation
TXP
Location
Newcastle Upon Tyne, Tyne and Wear, North East, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£425 - £426 per day
features. Essential Skills & Experience You must have commercial experience or strong hands-on exposure to: Java (17+) Spring Framework Microservices architecture & REST APIs OpenAPI/Swagger for API design and documentation Test-Driven Development (TDD) Desirable/Nice-to-Have Skills Experience or familiarity with any of the following ...

C# Senior Software Developer

Hiring Organisation
Adria Solutions
Location
Preston, Lancashire, North West, United Kingdom
Employment Type
Permanent
Salary
£75,000
Framework Core (DbContext, LINQ, Migrations) Debug and trace request flows from UI Controller API Database Response Maintain and publish API documentation via Swagger/OpenAPI Ensure API security, reliability, and performance (error handling, retry logic, logging, timeouts, CORS) Collaborate with database, infrastructure, and QA teams for portal ...

Full Stack Software Engineer

Hiring Organisation
83zero Ltd
Location
London, Lime Street, United Kingdom
Employment Type
Permanent
Salary
£100000 - £130000/annum
track record of building solutions end-to-end Experience deploying applications in cloud environments, preferably Microsoft Azure Strong experience in REST API design and OpenAPI standards Extensive experience working with databases, data platforms, and analytical tools Ability to research, propose, and implement solutions with minimal supervision Experience building internal ...

Senior Python Software Engineer

Hiring Organisation
Spencer Rose Ltd
Location
Watford, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 75,000 Annual
performance, reliability, and maintainability. Python Back End development, primarily using FastAPI and modern API patterns. Strong understanding of RESTful API design, schema validation, and OpenAPI/Swagger. Experience working with messaging and eventing platforms such as Kafka, RabbitMQ, Azure Service Bus, MQTT, or similar. Cloud-native development experience ...

Software Engineer (Golang / AWS)

Hiring Organisation
Adria Solutions
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
using Go. Develop serverless applications in AWS (Lambda, SST). Implement CI/CD pipelines and automated testing frameworks. Build and document APIs using OpenAPI standards. Work with NoSQL data stores, including DynamoDB. Apply strong security principles in all software design. Collaborate in Agile squads to deliver solutions efficiently. ...

UX/UI Developer

Hiring Organisation
Metro
Location
Birmingham, England, United Kingdom
component libraries such as DevExpress/DevExtreme Understanding of the full software development lifecycle in Agile environments Experience consuming RESTful APIs and working with OpenAPI/Swagger Knowledge of browser compatibility, performance optimisation, and accessibility standards Experience with Git-based source control and CI/CD pipelines Working knowledge ...

Technical Business Analyst

Hiring Organisation
Maxwell Bond
Location
Greater Manchester, England, United Kingdom
line management responsibilities) Key Skills & Experience Proven experience as a Technical Business Analyst in a software delivery environment Solid experience working with APIs (REST, OpenAPI/Swagger, JSON) Strong SQL skills for data analysis and validation Ability to communicate effectively with both technical and non-technical stakeholders Experience with ...

Full Stack Engineer (C# Backend / React .NET Front End)

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
integration, and UI testing Manage deployments across staging and production environments Collaboration & Ownership Contribute to architectural decisions and code reviews Document APIs (Swagger/OpenAPI), deployments, and runbooks Mentor junior engineers and promote engineering best practices What We're Looking For Strong experience in C#/.NET and React ...

Data Engineer - Metadata Management & Data Modelling

Hiring Organisation
Experis
Location
Telford, Shropshire, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £483/day
have metadata catalogue, data domain mapping, lineage documentation. Abacus for architecture compliance and linking data models. Beneficial: EDC/IDQ, ERD/UML tools, OpenAPI/Swagger understanding. ...

Senior Backend Engineer

Hiring Organisation
MarkIT Placements
Location
Didcot, Oxfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
Focus) Design and evolve scalable backend services in Python using FastAPI for high-availability, high-throughput workloads. Build well-versioned RESTful APIs aligned to OpenAPI/Swagger, with strong conventions for consistency, idempotency, and backward compatibility. Implement authentication and authorization using OAuth2/OIDC, session management, and fine-grained … Palantir Foundry, including working with Foundry APIs, data pipelines, ontologies, or Foundry-based application development. Proven experience designing and operating production REST APIs with OpenAPI/Swagger. Deep understanding of relational database design, indexing, performance tuning, and migrations (PostgreSQL). Proficiency with containerisation (Docker) and Git-based workflows. Experience ...

Software Engineer - Java /Back End

Hiring Organisation
Som3
Location
Basingstoke, Hampshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £65000/annum
management (Flyway/Liquibase), indexing strategy, and query optimisation. Design, document, and maintain RESTful and/or GraphQL APIs, ensuring consistency, versioning, and thorough OpenAPI/Swagger documentation. Identify, catalogue, and systematically address technical debt in collaboration with the wider Your background and experience will include Great communication skills … design. PostgreSQL skills: schema design, complex query writing, index optimisation, and migration tooling (Flyway or Liquibase). Experience designing and documenting APIs using OpenAPI/Swagger Proficiency with build tools - Maven or Gradle - and a modern Java development workflow. Understanding of software design principles (SOLID, DRY, Clean Architecture) Familiarity ...

Senior Software Engineer

Hiring Organisation
Inspire People
Location
Swansea, Neath Port Talbot, Wales, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
work with modern technologies across both back-end and front-end development. On the back end, this includes Java, Spring Boot and tools like OpenAPI - but what matters most is your ability to build clean, secure applications using any object-oriented language. For front-end work … native architectures (e.g. serverless, containers) Experience contributing to improvements in team processes, tooling or engineering practices Understanding of API design and tools such as OpenAPI Exposure to public sector or working within GDS standards and accessibility guidelines Benefits Alongside your salary of £44,241 - £58,997, Driver and Vehicle ...