1 to 25 of 27 OpenAPI Jobs in the UK

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 ...

Full Stack Software Engineer (Golang/Typescript)

Hiring Organisation
Safe Intelligence
Location
City of London, Greater London, UK
knowledge of DevOps and Git best practices. Experience automating version control, testing, and releases, preferably with GitHub Actions. Nice-to-haves: Familiarity with the OpenAPI specification and code generation toolsets for API development. Some experience with Python, modern development techniques, and design patterns. Experience in data science tools ...

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 ...

Senior Java Software Engineer

Hiring Organisation
Sanderson
Location
United Kingdom
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 ...

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 ...

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 ...

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 ...

Application Engineer

Hiring Organisation
Aimtech Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
Power Platform (Power Apps, Power Automate, Power Pages, Power BI) Python, JavaScript, TypeScript, Angular or React ASP.NET Core, Entity Framework, REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL databases, vector databases FastAPI and AI service integrations (OpenAI, Claude, Gemini) Docker, Kubernetes (AKS), Azure App Services Azure DevOps, Azure ...

Front End Software Engineer (Typescript)

Hiring Organisation
Safe Intelligence
Location
City of London, Greater London, UK
This includes knowledge of database (MongoDB) access patterns (e.g., Optimistic Concurrency Control - OCC) and schema design, domain-driven architecture, and concurrency. Familiarity with the OpenAPI specification and code generation toolsets for API development. Some experience with Python, modern development techniques, and design patterns. Experience in data science tools ...

Senior Quality Assurance Specialist

Hiring Organisation
System1
Location
United Kingdom
such as Selenium BDD frameworks such as Reqnroll Test frameworks such as NUnit, xUnit or MSTest API testing using REST, Postman or Swagger/OpenAPI CI/CD pipelines and automated testing workflows SQL and relational databases such as SQL Server or MySQL Cloud environments, ideally Microsoft Azure Microservices ...

API Developer

Hiring Organisation
Mphasis
Location
London Area, United Kingdom
financial services industry and their IT systems Practical cloud native experience Professional experience in API management technology e.g APIGEE, Kong, Mulesoft Strong understand of OpenAPI Specification (OAS) for RESTful APIs DevOps (CICD, Kubernetes, Terraform) Preferred qualifications, capabilities, and skills AWS (ECS, EKS, MSK) Kong API Gateway Golang programming language ...

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 ...

API Integration Platform Specialist

Hiring Organisation
Dns Info Ltd
Location
London, United Kingdom
Employment Type
Any
Salary
GBP Annual
services industry and their IT systems Practical cloud native experience Professional experience in API management technology eg API GEE, Kong, Mulesoft Strong understand of OpenAPI Specification (OAS) for RESTful API s DevOps (CICD, Kubernetes, Terraform) Preferred qualifications, capabilities, and skills AWS (ECS, EKS, MSK) Kong API Gateway Golang programming ...

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. ...

AWS Solution Architect

Hiring Organisation
Anson Mccade
Location
London, United Kingdom
Employment Type
Permanent
Salary
£75,000
Hands-on experience as an AWS Solution Architect (Integration Specialist) with Lambda and Kubernetes (EKS) Strong knowledge of API design and security (API Gateway, OpenAPI, OAuth2, JWT) Experience with cloud-native frameworks such as Flask or FastAPI Solid understanding of Kubernetes security, IAM, encryption, and CI/CD tooling ...

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 ...

AWS Solution Architect - Associate Manager

Hiring Organisation
Anson Mccade
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Hands-on experience as an AWS Solution Architect (Integration Specialist) with Lambda and Kubernetes (EKS) Strong knowledge of API design and security (API Gateway, OpenAPI, OAuth2, JWT) Experience with cloud-native frameworks such as Flask or FastAPI Solid understanding of Kubernetes security, IAM, encryption, and CI/CD tooling ...

Developer, Quality Engineering

Hiring Organisation
Connect Auto
Location
United Kingdom
multi-brand or multi-tenant environments. Our technology stack Frontend - React 18, TypeScript, Vite, MUI, Tailwind CSS, TanStack Query Backend - Node.js 22, Express, TSOA (OpenAPI) Infra - AWS Lambda, DynamoDB, OpenSearch, PostgreSQL, S3 Auth - Auth0 (JWT) QA Tooling - Qase Working arrangements This is a UK-based position. We offer fully ...

Principal Solutions Consultant

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
technical foundation, including: Knowledge of blockchain data structures, networking principles, Layer 1/Layer 2, and interoperability protocols. Experience designing and integrating RESTful APIs, OpenAPI specifications, and cloud‐based architectures. Familiarity with IT and security protocols (TLS/SSL) and experience with data compliance, governance, and auditability. Proficiency ...

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. ...

Principal Architect - Intelligent Automation

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
reference architectures for Agentic AI solutions, leveraging Azure AI Foundry as the pro-code platform - including multi-agent orchestration, tool integration (MCP, A2A, OpenAPI), agent memory, and enterprise knowledge grounding (RAG)* Assess opportunities for Intelligent Automation based on technical feasibility and business value, to enable prioritisation of the backlog ...

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 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 ...

Python Developer

Hiring Organisation
Understanding Solutions
Location
City of London, London, United Kingdom
Experience Needed Highly experienced Python Engineer/Developer Can hit the ground running and make an impact from early Technology needed: Python, Kafka, Flask, OpenAPI + FastAPI Excellent communication and collaborative skills needed Python Developer Day Rate: £400 Outside IR35 Duration: 6-months Start Date: ASAP (No long notice ...

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 ...