1 to 25 of 36 Permanent OpenAPI Jobs in the UK

High-level proficiency Familiarity with relational SQL databases, ideally PostgreSQL Docker TDD – Junit/Mockito or similar testing libraries MUST have transferrable DV clearance Desirable Skills: API Spec (Swagger OpenAPI) Gradle Liquibase Kafka React Typescript Previous government project experience with HMRC, HMPO or Home Office More ❯

and maintainability. +Practical experience working with AWS cloud environments (e.g., EC2) and a solid understanding of container orchestration using Kubernetes (K8s). +Extensive background in developing RESTful APIs, including OpenAPI/Swagger-driven interface design and implementation. +Familiar with CI/CD practices, pipeline automation, and test-driven development approaches. +Strong command of SQL databases, including schema migrations (e.g. More ❯

code quality and maintainability. Strong knowledge of DevOps and Git best practices. Experience automating version control, testing, and releases, preferably with GitHub Actions. Nice-to-haves: Familiarity with the OpenAPI specification and code generation toolsets for API development. Some experience with Python, modern development techniques, and design patterns. Experience in data science tools and ML tools (e.g., NumPy, pandas More ❯

code quality and maintainability. Strong knowledge of DevOps and Git best practices. Experience automating version control, testing, and releases, preferably with GitHub Actions. Nice-to-haves: Familiarity with the OpenAPI specification and code generation toolsets for API development. Some experience with Python, modern development techniques, and design patterns. Experience in data science tools and ML tools (e.g., NumPy, pandas More ❯

Cloud technologies. Containerisation (Docker/Kubernetes) and microservice architectures. Front-end frameworks (WPF and React). Database technologies. Test automation tools such as Playwright. Common API technologies such as OpenAPI, REST/HTTP, WebSocket, SignalR. GitHub and CoPilot. CI/CD. Basic Requirements What You Bring: Strong skills in at least one object-oriented language (C# or C++ preferred More ❯

distributed systems, and networking fundamentals * Ideally Hands-on with AWS (IAM, ECS/EKS, S3, RDS/DynamoDB, networking) and Kubernetes * Experience designing REST/gRPC APIs; protobuf/OpenAPI familiarity * Proficiency with SQL (Postgres/MySQL) and a NoSQL/Key-Value store (e.g., DynamoDB/Redis) * CI/CD (GitHub Actions/GitLab/CircleCI), automated testing More ❯

a technical lead Proficiency in Azure App Service, Container Services, and CI/CD pipelines Solid understanding of REST APIs, JSON, and microservice architecture Familiarity with Docker, Swagger/OpenAPI, and modern development practices Excellent communication and stakeholder management skills You'll join an environment that values autonomy, innovation and technical excellence, with the freedom to influence architecture and More ❯

improvement of the development process Essential Technical Skills Language - JavaScript, NodeJS, Typescript Framework - NestJS/Express/Microservices Testing - Jest/Mocha/Cypress/React testing Library API – OpenAPI/GraphQL/GRPC Messaging - AMQP/RabbitMQ/Kafka Data Storage - MongoDB/Mongoose Web UI - Angular/ReactJS/Svelte/Webpack/HTML/CSS Security More ❯

improvement of the development process Essential Technical Skills Language - JavaScript, NodeJS, Typescript Framework - NestJS/Express/Microservices Testing - Jest/Mocha/Cypress/React testing Library API – OpenAPI/GraphQL/GRPC Messaging - AMQP/RabbitMQ/Kafka Data Storage - MongoDB/Mongoose Web UI - Angular/ReactJS/Svelte/Webpack/HTML/CSS Security More ❯

with in-store content personalisation Contribute to distributed, event-driven backend services connecting our web experience with information from remote devices and external data sources. Build and document APIs (OpenAPI/AsyncAPI) for mobile and web clients Model and manage structured and semi-structured data across storage layers Integrate AI-driven personalisation and real-time insights into user flows More ❯

with in-store content personalisation Contribute to distributed, event-driven backend services connecting our web experience with information from remote devices and external data sources. Build and document APIs (OpenAPI/AsyncAPI) for mobile and web clients Model and manage structured and semi-structured data across storage layers Integrate AI-driven personalisation and real-time insights into user flows More ❯

in: .NET (C#) Unit & integration testing CI/CD pipeline development (GitHub or similar) AWS services (IAM, Lambda, API Gateway) Angular, REST APIs, Web API development SpecFlow (BDD), Postman, OpenAPI MS SQL Server (SQL) & MongoDB (NoSQL) Docker Experience with CQRS and Event Bus architecture is highly desirable Responsibilities for Software Engineering Team Leader Lead, mentor, and support a team More ❯

Great In this role, you’ll get to: Design scalable backend architecture using FastAPI and Python for high-performance workloads Build and maintain robust APIs following RESTful conventions and OpenAPI/Swagger standards Own the performance of PostgreSQL databases , including partitioning, indexing, and horizontal scaling strategies Secure and optimise infrastructure using Docker, AWS, and infrastructure-as-code (IaC) tools More ❯

Building front-end applications with Angular and developing RESTful APIs/Web APIs Implementing Behaviour-Driven Development (BDD) using SpecFlow API testing and validation with Postman Implementing and maintaining OpenAPI specifications Database experience: MS SQL Server (SQL) MongoDB (NoSQL) Containerization and deployment using Docker Location: BuckinghamshireSalary: £65,000 - £75,000C# - .Net - Angular - CI/CD - AWS - Postman - Docker - Rest More ❯

Infrastructure-as-Code (Terraform) and CI/CD systems. Deep knowledge of containers, orchestration (Kubernetes), and service-mesh patterns (Istio). Strong API design and security skills (REST/OpenAPI, authN/Z, mTLS, certificate lifecycle). Scripting proficiency in Bash, PowerShell, or Python. Depth in either Azure or GCP, with readiness to cross-train: Azure: ARM/Bicep More ❯

Proven experience delivering secure, scalable, high-quality services in production. Hands-on with JPA2, Hibernate, and MySQL 8 (InnoDB). Strong understanding of REST API design (JAX-RS, RESTEasy, OpenAPI, Swagger). Experience building fault-tolerant, multi-threaded systems and working with load balancing concepts. Familiarity with CI/CD, automation, and Behavioural Driven Development (BDD). Comfortable deploying More ❯

Experienced developer with strong Microsoft Azure skills, including Storage, Networking, App Services, Key Vault, and Scripting with Azure CLI. Proficient in C#, SQL, PowerShell, and familiar with APIs like OpenAPI, OAuth, and GraphQL. Strong problem-solving skills, proactive, and committed to building reliable, secure, and maintainable systems. Good understanding of security, compliance, and agile delivery practices. Passionate about learning More ❯

logging and alerting tools. What We're Looking For 5+ years of AWS integration experience, including secure deployments on Lambda and EKS . Strong API design and security expertise (OpenAPI, OAuth2, JWT). Proven integration experience with SAP, Salesforce, Oracle . Proficiency in Flask, FastAPI , or similar frameworks in cloud-native environments. Experience with event-driven patterns and AWS More ❯

are looking for the following experience: 5+ years' AWS integration experience, including secure deployments on Lambda and Kubernetes (EKS). Expertise in API design and security using API Gateway, OpenAPI, OAuth2, JWT, and service policies. Strong integration background with platforms like SAP, Salesforce, and Oracle ERP. Proficiency in Flask, FastAPI, or similar frameworks, deployed in cloud-native environments. Experience More ❯

/CD pipelines Familiarity with OAuth, JWT, and API security principles Nice to Have: Knowledge of event-driven architectures, API gateways, or Azure API Management Experience with Swagger/OpenAPI Understanding of AI or automation integrations Join a company where engineering excellence drives innovation in the Fintech space. More ❯

data analysis within an IT or technical environment. Strong proficiency in SQL and scripting languages including Python or R. Practical experience with RESTful API design, documentation (e.g. Swagger/OpenAPI), and testing tools (e.g. Postman). Working knowledge of cloud platforms (primarily Azure) and associated data services. Strong understanding of data modelling, ETL workflows, and system integration. Services offered More ❯

data analysis within an IT or technical environment. Strong proficiency in SQL and scripting languages including Python or R. Practical experience with RESTful API design, documentation (e.g. Swagger/OpenAPI), and testing tools (e.g. Postman). Working knowledge of cloud platforms (primarily Azure) and associated data services. Strong understanding of data modelling, ETL workflows, and system integration. Services offered More ❯

logging, monitoring, and observability practices. Fluent in English - comfortable working with global stakeholders and clients. Bonus Skills Experience integrating with financial or ERP systems . Knowledge of Swagger/OpenAPI documentation for public APIs. Familiarity with Azure services and automation tools such as Power Automate or Zapier . Exposure to IoT or Telematics platforms . Awareness of ISO More ❯

developer experience across different industries Good understanding of GitOps Good understanding of Container deployments Good understating of CI/CD pipelines Demonstratable knowledge of the Public Cloud Working with OpenAPI specifications and APIs generally Linux system admin and network operations Desirable Good understanding of IP Networking IPv4 and IPv6 stack Awareness of Telco/ISP networking IP stack e.g. More ❯

authentication, encryption, GDPR). Great communication skills—because explaining tech shouldn’t feel like decoding hieroglyphics. Bonus points if you’ve: Worked with financial or ERP systems. Swagger/OpenAPI experience. Played around with Azure or automation tools like Power Automate/Zapier. Dabbled in IoT or telematics. To find out more feel free to reach out to me More ❯