26 to 37 of 37 OpenAPI Jobs in England

with: Behaviour Driven Development (BDD) Test Driven Development (TDD) Strong coding skills in: C# (essential) Python (highly desirable) Experience testing: RESTful APIs Swagger/OpenAPI services SOAP services Web applications and user interfaces Experience with source control and CI/CD tooling: GitHub GitHub Actions Strong defect management ...

scale Experience defining architecture principles, standards, and best practices Strong understanding of modern development and deployment practices Experience with specification tools such as AsyncAPI, OpenAPI, and JSON Schema Familiarity with containerised environments and cloud platforms Experience with technologies such as MongoDB, PostgreSQL, Redis, and RabbitMQ Strong analytical, problem-solving ...

operator environments - TMF standards: Product Ordering (TMF641), Service Ordering, Service Activation, Service Inventory (TMF638) API Development & Integration - Strong expertise in API lifecycle design using OpenAPI specifications (OAS) - can read and write API specs - Hands-on with TMF/ODA frameworks for product and service APIs - Expertise in integration patterns … OpenAPI , REST, gRPC , GraphQL ) - Strong background in pub/sub and event brokers (Kafka, RabbitMQ) including security (TLS/SASL), scaling and schema evolution - Knowledge of headers, correlation/tracking IDs, authentication/authorisation and versioning Product, Data & Application Foundations - Product and data modelling: can actually do BSS/ ...

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 … experience, 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. Deep understanding of relational database design, indexing, performance tuning, and migrations (PostgreSQL). Proficiency with containerisation (Docker) and Git-based workflows. Experience ...

hands-on experience designing and delivering MuleSoft integrations in an enterprise environment. Proven experience building and maintaining API-led architectures, including RESTful APIs and OpenAPI specifications. Solid experience working with Salesforce, including customisation, integration and automation. Knowledge of existing and emerging MuleSoft technologies such as Agent Fabric, Vibes, Gateway ...

based platforms. What you'll be doing: Translating business and user requirements into effective technical designs Building APIs and backend services using Node.js (REST, OpenAPI) Developing user-focused services, putting accessibility and usability first Writing clean, reusable, and maintainable code Working with shared/common government tech stacks (Node.js … including OWASP principles and vulnerability management Collaborating with stakeholders and communicating technical concepts clearly Tech stack includes: Node.js, HAPI (web framework) API development (REST, OpenAPI) PostgreSQL, MongoDB, Redis Jest and Lab for testing Git for source control Cloud platforms (AWS, Azure) Docker, Kubernetes, ECS CI/CD tools (Azure ...

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 ...

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 ...

We are recruiting for a Software Engineer Consultant on behalf of one of the UK's fastest-growing technology consultancies, ranked in the Financial Times FT1000 Europe's Fastest-Growing Companies list in both 2025 ...

frameworks such as Scrum, SAFe and DevSecOps. Responsibilities: Develop and maintain Python-based microservices for processing complex datasets Design and implement RESTful APIs using OpenAPI and JSON standards Build and execute automated tests to ensure performance and reliability Work within Agile delivery teams using frameworks such as Scrum, SAFe … teams to solve evolving technical challenges About You Strong experience developing and testing Python microservices using Docker Hands-on experience building RESTful APIs with OpenAPI and JSON Experience working in Agile environments with a delivery-focused mindset Knowledge of PostgreSQL and data-driven application development Strong communication skills with ...

Technology is at the heart of this fast-growing digital bank — powering the systems that make business banking simpler, faster and smarter. This role is about setting the technical direction across payments, shaping scalable systems ...

clarity to build foundational infrastructure. Define, publish, and version canonical domain models for Swap's core entities. Own the delivery of schemas and OpenAPI definitions. Establish and maintain a lightweight governance pipeline: review process, ownership model, versioning policy, and deprecation strategy. Translating software requirements into working, high-performance software. … decisions. 5+ years of backend or full‐stack engineering experience, with strong TypeScript/JavaScript and Node.js skills. Experience designing versioned APIs (REST/OpenAPI and/or GraphQL with schema governance). Experience working in platform or infrastructure engineering roles — comfortable with work whose primary customer is other ...