1 to 25 of 35 OpenAPI Jobs in the UK

Object-oriented programming forms the bulk of our codebase, currently in Java (11+), and ideally Spring Boot. You will be working with SQL and large SQL databases, Docker, Kubernetes, OpenAPI specifications, and distributed system observability tooling (e.g., Datadog APM). Infrastructure automation is primarily owned by the infrastructure team, but you will be a consumer of their work; familiarity More ❯

such as Django , Flask , FastAPI , Asyncio , Aiohttp , and SQLAlchemy to build scalable web applications. Develop and maintain RESTful APIs , WebSocket , and GraphQL services, ensuring comprehensive documentation with Swagger/OpenAPI . Manage and optimize databases, specifically PostgreSQL , NATS , Redis , and Min.IO . Leverage Microsoft Azure services, including Azure Functions , Azure KeyVault , Azure SQL Database , and Azure DevOps for cloud More ❯

such as Django , Flask , FastAPI , Asyncio , Aiohttp , and SQLAlchemy to build scalable web applications. Develop and maintain RESTful APIs , WebSocket , and GraphQL services, ensuring comprehensive documentation with Swagger/OpenAPI . Manage and optimize databases, specifically PostgreSQL , NATS , Redis , and Min.IO . Leverage Microsoft Azure services, including Azure Functions , Azure KeyVault , Azure SQL Database , and Azure DevOps for cloud More ❯

Deep knowledge of RESTful API design, including best practices for resource modelling, pagination, and error handling. Proven experience with API versioning strategies, backward compatibility, and lifecycle management. Familiarity with OpenAPI/Swagger specifications and API documentation tooling. Solid understanding of API security, including OAuth2, API keys, scopes, JWT, and rate limiting. Strong testing experience, including contract testing, unit, integration More ❯

on architecture, performance, and delivery. What You'll Be Working With: Azure services such as Functions, Event Grid, Service Bus, SQL, Blob Storage, and DevOps pipelines API design, documentation (OpenAPI/Swagger), and integration with external partners Hands-on coding in C# .NET or Python (with opportunities to explore Node.js/Java) Building and optimising data pipelines and cloud More ❯

legacy systems and migrating to cloud-native platforms Solid grasp of AWS (API Gateway, Lambda, S3, VPC) Familiarity with Java, DB2, relational databases, and network concepts Desirable experience includes: OpenAPI schemas, Kubernetes, Spring Boot, JBOSS/EJB, Postgres, Python Prior work within UK government departments Ability to mentor and lead technical teams This is a key role in a More ❯

Experience with monitoring and observability tools like Azure Monitor, Application Insights, and Log Analytics. Awareness of data security, GDPR, and compliance in educational or public sector environments. Exposure to OpenAPI/Swagger, API lifecycle management, and version control best practices. Previous experience working with third-party suppliers in multi-vendor delivery environments. 12-month contract-to start ASAP- Hybrid More ❯

and other technical documentation Tech Stack Essentials: proficient in: AWS (API Gateway, S3, Lambda, VPC) Java DB2 Relational databases Network Concepts (Firewalls, domains, routing) Tech Stack Desirable: proficient in: OpenAPI Schemas Kubernetes (high level) Spring Boot JBOSS/EJB awareness Postgres Python (again for reading code primarily) Awareness of architecture design patterns Nice to have Knowledge of the land More ❯

and other technical documentation Tech Stack Essentials: proficient in: AWS (API Gateway, S3, Lambda, VPC) Java DB2 Relational databases Network Concepts (firewalls, domains, routing) Tech Stack Desirable: proficient in: OpenAPI Schemas Kubernetes (high level) Spring Boot JBOSS/EJB awareness Postgres Python (again for reading code primarily) Awareness of architecture design patterns Nice to have Knowledge of the land More ❯

3. Good understanding of GitOps 4. Good understanding of Container deployments 5. Good understating of CI/CD pipelines 6. Demonstratable knowledge of the Public Cloud 7. Working with OpenAPI specifications and APIs generally 8. Linux system admin and network operations Desirable 9. Good understanding of IP Networking IPv4 and IPv6 stack 10. Awareness of Telco/ISP networking More ❯

Python with hands-on experience in asynchronous programming, concurrency and multithreading. API Expertise: Proven experience in building and integrating APIs, with expertise in API documentation and schema definition using OpenAPI/Swagger. Strong understanding of RESTful API design, authentication/authorization standards, and API lifecycle best practices; familiarity with Microsoft Graph API is a plus. Experience & Knowledge Requirements Good More ❯

Python with hands-on experience in asynchronous programming, concurrency and multithreading. API Expertise: Proven experience in building and integrating APIs, with expertise in API documentation and schema definition using OpenAPI/Swagger. Strong understanding of RESTful API design, authentication/authorization standards, and API lifecycle best practices; familiarity with Microsoft Graph API is a plus. Experience & Knowledge Requirements Good More ❯

Python with hands-on experience in asynchronous programming, concurrency and multithreading. API Expertise: Proven experience in building and integrating APIs, with expertise in API documentation and schema definition using OpenAPI/Swagger. Strong understanding of RESTful API design, authentication/authorization standards, and API lifecycle best practices; familiarity with Microsoft Graph API is a plus. Experience & Knowledge Requirements Good More ❯

Python with hands-on experience in asynchronous programming, concurrency and multithreading. API Expertise: Proven experience in building and integrating APIs, with expertise in API documentation and schema definition using OpenAPI/Swagger. Strong understanding of RESTful API design, authentication/authorization standards, and API lifecycle best practices; familiarity with Microsoft Graph API is a plus. Experience & Knowledge Requirements Good More ❯

Python with hands-on experience in asynchronous programming, concurrency and multithreading. API Expertise: Proven experience in building and integrating APIs, with expertise in API documentation and schema definition using OpenAPI/Swagger. Strong understanding of RESTful API design, authentication/authorization standards, and API lifecycle best practices; familiarity with Microsoft Graph API is a plus. Experience & Knowledge Requirements Good More ❯

distributed systems and cloud platforms. Strong hands-on knowledge of Azure integration services (Logic Apps, Azure Functions, Service Bus, API Management). Experience with REST API testing, Swagger/OpenAPI validation, and API test automation. Solid background in non-functional testing, including performance, security, and resilience testing. Capability in DevOps testing, with the ability to embed test automation into More ❯

systems and cloud platforms. Hands-on knowledge of Azure integration services such as Logic Apps, Azure Functions, Service Bus, and API Management. Experience with REST API testing, Swagger/OpenAPI validation, and API test automation. Background in non-functional testing, including performance, security, and resilience testing. Ability to embed test automation into CI/CD pipelines using Azure DevOps More ❯

payments, lending, treasury, or risk. Technical expertise in: SQL, data analysis, and data visualization tools (Power BI/Tableau/Qlik) APIs (knowledge of JSON, RESTful services, Swagger/OpenAPI specs) Excel, ETL tools, and basic scripting (Python is a plus) Experience working in Agile/Scrum environments. Strong documentation and communication skills. Ability to collaborate with cross-functional More ❯

and written) as this role is working with colleagues and clients to understand requirements, explain solutions and document clearly. Desired: Experience integrating with financial or ERP systems Swagger/OpenAPI documentation for Open APIs Familiarity with Azure services and automation tools like Power Automate or Zapier Exposure to IoT or Telematics platforms Awareness of ISO 27001, SOC 2, or More ❯

through technical guidance and troubleshooting, working closely with engineering and client success teams. Must Have Experience in software engineering and solution architecture throughout the delivery lifecycle Experience with APIs, OpenAPI, and sequence diagrams Client-facing experience and stakeholder relationship skills Strong communication skills for technical and non-technical audiences Nice to Have Experience in banking, payments, or related fields More ❯

and deployment. Producing high-quality, user-focused software solutions. Contributing to technical architecture decision making. Core skills Languages: Node.js, TypeScript Front-end: Next.js and Vercel, Tailwind CSS Back-end: OpenAPI Infrastructure: AWS (ECR, ECS, Fargate, Elasticache/Redis, SQS, SES, Cognito, RDS, Bedrock, KMS, S3) Databases: MongoDB and PostgreSQL This is a hybrid role - 4 days per week in More ❯

and identify optimisation opportunities. Influence and guide product owners in Agile story writing and backlog refinement. A successful Technical Product Owner will have: Proven API product management experience (REST, OpenAPI, authentication methods). Strong backlog management and Agile delivery expertise (Scrum/Scaled Agile/SAFe). Excellent stakeholder management and communication skills. Experience in enterprise-scale organisations (not More ❯

a Technical Product Owner, ideally within Open Banking or financial services. Strong understanding of API product strategy, backlog management, and developer experience (DX). Hands-on knowledge of REST, OpenAPI specs, and authentication methods. Skilled in stakeholder communication, translating technical concepts into business outcomes. Experience with agile methodologies, ideally SAFe or Lean Portfolio Management. If this Technical Product Owner More ❯

and delivery. Strong background in backlog management and Agile story writing. Experience driving Developer Experience (DX) – documentation, onboarding, and support for API consumers. Desirable skills: Technical understanding of REST, OpenAPI specifications, and authentication methods . Skilled in stakeholder management and communication , translating technical solutions into business value. Exposure to Scaled Agile/SAFe, Lean Portfolio Management or Lean Product More ❯

and delivery. Strong background in backlog management and Agile story writing. Experience driving Developer Experience (DX) – documentation, onboarding, and support for API consumers. Desirable skills: Technical understanding of REST, OpenAPI specifications, and authentication methods . Skilled in stakeholder management and communication , translating technical solutions into business value. Exposure to Scaled Agile/SAFe, Lean Portfolio Management or Lean Product More ❯