24 of 24 Permanent OpenAPI Jobs in London

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 ❯

/CD: TeamCity Desirable Skills: Docker and Containerization Monitoring and Logging (e.g., Prometheus, Grafana, ELK Stack) Cloud Platforms (AWS, Azure, Google Cloud) Security and Compliance API Documentation (e.g., Swagger, OpenAPI) Code Quality Tools (e.g., SonarQube) Agile Methodologies (Scrum or Kanban) Soft Skills: Team Collaboration : Ability to work effectively with cross-functional teams, sharing knowledge and expertise. Proactive Approach : Anticipate More ❯

/CD: TeamCity Desirable Skills: Docker and Containerization Monitoring and Logging (e.g., Prometheus, Grafana, ELK Stack) Cloud Platforms (AWS, Azure, Google Cloud) Security and Compliance API Documentation (e.g., Swagger, OpenAPI) Code Quality Tools (e.g., SonarQube) Agile Methodologies (Scrum or Kanban) Soft Skills: Team Collaboration : Ability to work effectively with cross-functional teams, sharing knowledge and expertise. Proactive Approach : Anticipate More ❯

/CD: TeamCity Desirable Skills: Docker and Containerization Monitoring and Logging (e.g., Prometheus, Grafana, ELK Stack) Cloud Platforms (AWS, Azure, Google Cloud) Security and Compliance API Documentation (e.g., Swagger, OpenAPI) Code Quality Tools (e.g., SonarQube) Agile Methodologies (Scrum or Kanban) Soft Skills: Team Collaboration : Ability to work effectively with cross-functional teams, sharing knowledge and expertise. Proactive Approach : Anticipate More ❯

/CD: TeamCity Desirable Skills: Docker and Containerization Monitoring and Logging (e.g., Prometheus, Grafana, ELK Stack) Cloud Platforms (AWS, Azure, Google Cloud) Security and Compliance API Documentation (e.g., Swagger, OpenAPI) Code Quality Tools (e.g., SonarQube) Agile Methodologies (Scrum or Kanban) Soft Skills: Team Collaboration : Ability to work effectively with cross-functional teams, sharing knowledge and expertise. Proactive Approach : Anticipate 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. Essential Requirements API Lifecycle 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. Essential Requirements API Lifecycle 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. Essential Requirements API Lifecycle 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. Essential Requirements API Lifecycle 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 ❯

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 ❯

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 ❯

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 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 lifecycle management, including writing and prioritising user stories • Focused on Developer Experience (DX), ensuring clear documentation, onboarding, and versioning for API consumers • Knowledge of API technologies including REST, OpenAPI specs, and authentication methods • Excellent stakeholder management and communication skills, with the ability to translate technical solutions into business value • Familiarity with scaled agile frameworks such as SAFe, Lean More ❯

and lifecycle management, including writing and prioritising user stories • Focused on Developer Experience (DX), ensuring clear documentation, onboarding, and versioning for API consumers • Knowledge of API technologies including REST, OpenAPI specs, and authentication methods • Excellent stakeholder management and communication skills, with the ability to translate technical solutions into business value • Familiarity with scaled agile frameworks such as SAFe, Lean More ❯

and lifecycle management, including writing and prioritising user stories • Focused on Developer Experience (DX), ensuring clear documentation, onboarding, and versioning for API consumers • Knowledge of API technologies including REST, OpenAPI specs, and authentication methods • Excellent stakeholder management and communication skills, with the ability to translate technical solutions into business value • Familiarity with scaled agile frameworks such as SAFe, Lean More ❯

and lifecycle management, including writing and prioritising user stories • Focused on Developer Experience (DX), ensuring clear documentation, onboarding, and versioning for API consumers • Knowledge of API technologies including REST, OpenAPI specs, and authentication methods • Excellent stakeholder management and communication skills, with the ability to translate technical solutions into business value • Familiarity with scaled agile frameworks such as SAFe, Lean More ❯

adapters such as JDBC, SAP, MQ, and Flat File for integration with external systems and databases. Create and consume RESTful and SOAP-based web services, including WSDL, Swagger/OpenAPI specifications, and API Gateway configurations. Develop error handling and logging frameworks to support robust system operations. Skills and Experience Proficiency with the webMethods Integration Suite, covering both webMethods.io and … expertise with webMethods adapters (JDBC, SAP, MQ, Flat File). Skilled in API Management and Web Services, with experience creating and consuming REST and SOAP services, WSDL, Swagger/OpenAPI, and API Gateway. Security Clearance This role requires Security Check (SC) clearance. Applicants must have resided continuously in the UK for the last 5 years and meet all eligibility More ❯