4 of 4 Contract OpenAPI Jobs in England

Fullstack Developer

Hiring Organisation
Damia Group Ltd
Location
Newcastle Upon Tyne, Tyne and Wear, North East, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £500 per day
principles and Test-Driven Development (TDD) . Experience working with both relational databases (e.g., Postgres) and NoSQL Understanding of REST API design patterns and OpenAPI specifications . Hands-on experience with the AWS Cloud Platform . Knowledge of GitHub and CI/CD pipelines using GitHub Actions . Experience ...

Senior Full Stack Engineer

Hiring Organisation
MarkIT Placements
Location
Didcot, Oxfordshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £700 per day
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 … engineering, with a strong focus on backend development in Python and with event-driven architectures. Proven experience designing and operating production REST APIs with OpenAPI/Swagger. Comfortable working in a React/TypeScript codebase. Deep understanding of relational database design, indexing, performance tuning, and migrations (PostgreSQL). Proficiency ...

Contract) Boomi Integration Engineer

Hiring Organisation
Lynko
Location
Manchester, United Kingdom
Employment Type
Contract
strong Boomi hands-on capability). Strong knowledge of integration patterns: synchronous vs async, pub/sub, idempotency, batching, pagination. API fundamentals: REST, SOAP, OpenAPI basics, webhooks, status codes, versioning. Data formats & transformation: JSON, XML, CSV; mapping and validation; basic XSLT helpful. Operational discipline: logging, monitoring, alerting, incident response. ...

Full Stack Developer (ReactJS & Java)

Hiring Organisation
KBC Technologies UK LTD
Location
Leeds, West Yorkshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
ReactJS Designing and developing high-performance backend services with Java & Spring Boot Creating scalable REST APIs and microservices Writing clear and maintainable Swagger/OpenAPI documentation Producing Low-Level Designs (LLD) and shaping technical solutions Reviewing code and promoting engineering best practices Mentoring developers and contributing to a strong … hands-on experience with ReactJS Solid backend expertise in Java, Spring Boot, and Microservices Experience designing and consuming RESTful APIs Comfortable creating Swagger/OpenAPI specs Strong understanding of software design and clean code Experience with testing frameworks and automation Practical exposure to Azure and/or GCP Experience ...