8 of 8 Contract OpenAPI Jobs in England

Lead Java Developer

Hiring Organisation
TXP Technology x People
Location
Telford, Shropshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£0 per annum
Required Skills Java , Spring Boot , JUnit , Kubernetes Experience working on Central Government projects Desirable Skills JPA, Maven, Mockito, AWS, GitLab CI/CD, Helm, OpenAPI, SQL, Kibana, Shell scripting ...

Java Developer

Hiring Organisation
TXP Technology x People
Location
Telford, Shropshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£0 per annum
quality solutions Required Skills Java , Spring Boot , JUnit , Kubernetes Experience working on Central Government projects Desirable Skills JPA, Kibana, Maven, Mockito, AWS, GitLab, Helm, OpenAPI, SQL, Shell scripting Why Apply? Long-term contract (12 months) Flexible working arrangements Opportunity to work on high-impact government modernisation projects ...

Open Banking Solution Architect

Hiring Organisation
Stackstudio Digital Ltd
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £600 per day
Deep understanding of OAuth 2.0, OpenID Connect, mutual TLS, certificates, token management, and consent-driven access control. Experience interpreting and applying standards such as OpenAPI, FAPI, and relevant regulatory technical standards. Architecture, Strategy, and Solution Design Significant experience operating as a Solution Architect in complex financial services environments. Proven ...

Salesforce Full Stack Developer

Hiring Organisation
Red - The Global SAP Solutions Provider
Location
Cheshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
development experience combining Salesforce (Apex, LWC, Visualforce) and Java. Strong experience in RESTful API design and Back End service development. Hands-on proficiency in OpenAPI (OAS) and API documentation in YAML. Strong understanding of unit testing approaches for both Salesforce and Java components. Practical expertise with GitLab, branching strategies ...

Senior Azure API Engineer

Hiring Organisation
Vermillion Analytics
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £750/day
operationalise a lean, zero-trust API platform on Azure API Management Architect microservices and event-driven integration flows at scale Define API specifications using OpenAPI and implement modern integration patterns Drive CI/CD automation, monitoring, and operational excellence Mentor developers and champion best practices across the engineering team … that delight users What You Bring Essential: 10+ years software development, including 3+ years hands-on Azure Deep expertise in Azure API Management Strong OpenAPI, RESTful API design, and security protocols (OAuth 2.0, JWT, TLS) Proficiency in Node.js/Java/C# and modern integration patterns Experience with ...

React Native developer

Hiring Organisation
Experis
Location
Knutsford, Cheshire, United Kingdom
Employment Type
Contract
Contract Rate
£430/day
performance, reliability, and maintainability Build and support Java-based backend services for enterprise-scale applications Design and implement RESTful APIs , including documentation using OpenAPI Specification (OAS)/YAML Apply Test-Driven Development (TDD) principles across frontend and backend components Write and maintain unit tests to ensure high levels … development Hands-on experience with TDD and automated testing practices Solid experience with GitLab , including CI/CD pipelines Experience producing and maintaining OpenAPI (OAS)/YAML specifications Strong understanding of unit testing frameworks and best practices Proven experience working in Agile/Scrum delivery environments ...

QA Test Engineer

Hiring Organisation
Experis
Location
Northampton, Northamptonshire, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £401/day
decisioning components, and integration workflows. Conduct JSON schema validation, payload structure checks, and API contract verification. Review and validate API documentation using Swagger/OpenAPI specifications. Develop Python scripts for simulation, automation, and data validation. Prepare and maintain test plans, test cases, and use cases. Validate decision strategy outputs … Agile ceremonies and support performance/monitoring activities where required. Core Skills Testing: Manual, REST API, Automation Technologies: JSON, JSON Schema, Swagger/OpenAPI Tools: Python, Karate, Excel, LoadRunner, Insomnia/Bruno CI/CD: GitLab, Jenkins Monitoring: Kibana, AppDynamics Concepts: SDLC, TDD, OAuth, Authentication/Authorization, Tokenization/ ...

Salesforce Engineer

Hiring Organisation
Experis
Location
Knutsford, Cheshire, North West, United Kingdom
Employment Type
Contract
consume RESTful APIs, ensuring robust and secure integrations Apply Test-Driven Development (TDD) and Behaviour-Driven Development (BDD) approaches where applicable Produce and maintain OpenAPI specifications using OAS/YAML Write comprehensive unit tests to ensure code quality and reliability Contribute to automated CI/CD pipelines using GitLab … years' experience with Java Strong, demonstrable experience with TDD (and BDD, where applicable) Proven experience designing and building RESTful APIs Hands-on experience with OpenAPI Specification (OAS)/YAML Solid understanding of unit testing frameworks Experience using GitLab for version control and CI/CD pipelines Strong understanding ...