26 to 50 of 70 OpenAPI Jobs in London

first mindset by designing, documenting, and ensuring the quality of robust, efficient HTTP/REST APIs for microservice communication (including using tools like OpenAPI/Swagger). Ensure System Health: Oversee and implement strategies for system scalability, resilience, and high availability, including ownership of monitoring, alerting, and performance optimization. ...

test coverage gates.Require code reviews for all merges; maintain modular, testable designs with clear separation of concerns and DCC-agnostic cores where applicable.Documented APIs (OpenAPI/Protobuf), versioned schemas, and backward-compatible changes.Secure-by-default practices (authn/z, secrets management), performance budgets, and telemetry by design.Primary technologies (coding ...

software platforms in network, cloud, infrastructure, or service provider environments. Strong software engineering skills using Python and Go. Experience building and consuming RESTful APIs, OpenAPI, gRPC, or similar interfaces. Strong knowledge of software engineering practices including Git, code review, automated testing, CI/CD, and release management. Familiarity with ...

document processing or agentic workflows. Authentication and identity platforms such as Auth0. Geospatial technologies including GeoJSON, HERE, Mapbox or QGIS. Stripe or payment platforms. OpenAPI, SDK generation or developer platform tooling. ISO 27001, Cyber Essentials or secure software development practices. Our tech stack (This isn't a shopping list ...

cloud-native experience. · API management: Professional experience with API management technologies (e.g., Apigee, Kong, or MuleSoft). · API design: Strong understanding of the OpenAPI Specification (OAS) for RESTful APIs. · API security: Hands-on experience securing APIs at the gateway, including OAuth 2.0, OpenID Connect (OIDC), JWT validation, key-auth ...

challenging deadlines; credible, resilient, and comfortable challenging the status quo to drive the best integration outcomes. Technical: API Engineering (REST/OData), specification using OpenAPI/Swagger, Postman-based testing. SAP integration artefacts (IDoc types for vendor, PO, GR, invoice; BAPI/RFC; ALE; OData services). Coupa integration ...

with relational databases such as MySQL or similar, along with exposure to cloud platforms, infrastructure-as-code practices, and API documentation standards such as OpenAPI/Swagger Demonstrated understanding of application lifecycle management practices, including familiarity with application registration, governance tooling, and compliance requirements within a regulated enterprise technology ...

deliver it independently. Experience with cloud infrastructure and event-driven architectures (e.g. Kafka or equivalent streaming technology). Experience designing and evolving API contracts (OpenAPI or similar) in a fast-moving, still-evolving product environment. Familiarity with modern cloud identity and access management approaches (e.g. AWS Cognito or equivalent ...

with relational databases such as MySQL or similar, along with exposure to cloud platforms, infrastructure-as-code practices, and API documentation standards such as OpenAPI/Swagger Demonstrated understanding of application lifecycle management practices, including familiarity with application registration, governance tooling, and compliance requirements within a regulated enterprise technology ...

with relational databases such as MySQL or similar, along with exposure to cloud platforms, infrastructure-as-code practices, and API documentation standards such as OpenAPI/SwaggerDemonstrated understanding of application lifecycle management practices, including familiarity with application registration, governance tooling, and compliance requirements within a regulated enterprise technology environmentExperience ...

Golang and/or Lua Hands-on experience with API Management platforms , ideally Kong API Gateway Strong understanding of RESTful APIs and the OpenAPI Specification (OAS) Hands-on API security experience, including: OAuth 2.0 OpenID Connect (OIDC) JWT validation Key Authentication Mutual TLS (mTLS) Strong cloud-native engineering experience ...

/managing resources/deploying apps Familiar with JIRA and Confluence Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAP Experience of PowerBI, PowerQuery and R Experience of structured testing and quality assurance approaches ...

services & setting up/managing resources/deploying appsFamiliar with JIRA and ConfluenceCapable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAPExperience of PowerBI, PowerQuery and RExperience of structured testing and quality assurance approaches (e.g. ...

.· Experience of .Net core· Full stack development skills· Experience of working with REST APIs, using a design first approach and adhering to the OpenAPI spec· Strong background in database technologies, specifically Oracle and using Entity Framework· Knowledge of working with event-based systems, any experience of Apache Kafka ...

services & setting up/managing resources/deploying appsFamiliar with JIRA and ConfluenceCapable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAPExperience of PowerBI, PowerQuery and RExperience of structured testing and quality assurance approaches (e.g. ...

core libraries (e.g., Apache Commons, Guava). Modern Microservices (Nice to Have): Familiarity with microservices architecture and related tooling (e.g., Docker, Kubernetes, Swagger/OpenAPI). Public Sector Context (Nice to Have): Prior experience delivering digital transformation or cloud projects within the UK public sector. SOME THINGS ...

Experience with writing automated tests and testing frameworks like Vitest and Playwright. Experience consuming and helping shape REST API contracts, including working with an OpenAPI specification. Ability to implement beautiful styles using CSS. Real experience of AI-assisted development, and a clear view on where it helps and where ...

have Experience with LLM‐powered applications: RAG pipelines, tool‐calling architectures, or agentic systems. Experience designing external‐facing APIs, including versioning, backwards compatibility, and OpenAPI/REST standards. Familiarity with data infrastructure such as Airflow, Spark, Iceberg, or Kafka. Experience with energy markets. Modo Energy is an equal opportunity ...

full designsExperience of working with and developing alongside a CMS (preferably with Umbraco)Capable of working with multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAPGood knowledge of technical SEO best practices, familiar with LightHouse on assessing page load timesWorked ...

screen, technical phone screen, and a paid on-site work trial. Target turnaround is under two weeks from first conversation. TypeScript, Node.js, React, Tailwind, OpenAPI, Express, Azure (Container Apps, Service Bus, Front Door, Entra ID), Postgres, Terraform, GitHub Actions, Docker. Anthropic-first AI with in-house evals and scaffolding. ...

Role Overview We are seeking an experienced Full Stack Developer with strong expertise in Node.js , Next.js , Angular , and cloud-native microservices . The ideal candidate will have a proven track record in designing, developing, and ...

building applications using React.js and Next.js Backend development experience with Python, Golang or Java Experience building schema-driven UIs and services Strong understanding of OpenAPI Specification (OAS) and/or JSON Schema Professional experience configuring API gateways, including: Kong Envoy Akamai/CloudFront Strong hands-on GitOps experience Desirable ...

software engineering/solution architecture across the software delivery lifecycleExperience with software service design and integration, such as RESTful APIs, OpenAPI specification and sequence diagramsExperience of cloud infrastructure and large-scale cloud applicationsExperience working in a client-facing role and building relationships with stakeholdersStrong interpersonal communication and collaboration skills. ...

Deep experience with TanStack Query, including query-key design, cache invalidation, stale policies, and route-loader prefetching Experience integrating identity verification, document upload, and OpenAPI-generated API clients Experience implementing roles and permissions in both the interface and API Habit of testing with Vitest, React Testing Library ...

Hands-on experience designing schemas for relational databases, messaging, data lakes/lakehouses (Databricks, Snowflake, or equivalent), and API/message formats (JSON Schema, OpenAPI, Avro, Protobuf). Strong understanding of metadata and lineage management. 5+ years of experience, or demonstrated delivery against requirements in data modelling, data architecture ...