1 to 25 of 127 OpenAPI Jobs in the UK

Senior Python Developer/ Engineer

Location
City of Westminster, England, United Kingdom
event‐driven architectures, or real‐time data patterns. Familiarity with modern authentication approaches such as OAuth2, OpenID Connect, JWT, and AWS Cognito. Experience with OpenAPI/Swagger specifications and API lifecycle management. Experience with CI/CD tools such as GitHub Actions, Azure DevOps, Jenkins, or AWS CodePipeline. #J ...

Technical Product Manager

Hiring Organisation
HUKM Development
Location
Buckinghamshire, England, United Kingdom
practices Knowledge of authentication and authorisation protocols including OAuth2, JWT, and API security best practice Proficiency with API documentation tools such as Swagger/OpenAPI or Postman Experience with agile tooling such as Jira, Azure DevOps, or Linear Strong technical writing: PRDs, technical specifications, and API documentation Comfortable defining ...

Software Engineer III - Java

Location
Glasgow, Scotland, United Kingdom
Spring Boot, including dependency injection, configuration, and REST services Strong experience designing and implementing RESTful APIs, schema/versioning practices, and contract-first or OpenAPI-driven development Hands-on experience with secure coding and safe data handling Unit/integration testing (e.g., JUnit, Mockito) and ability to build effective ...

Manager - DE - Technology Consulting - FS

Location
Greater London, England, United Kingdom
pragmatic technical designs. Required skills Skill Area Technologies/Capabilities Engineering leadership Java, Spring Boot, .NET or Node.js, microservices, REST APIs, event-driven architectures, OpenAPI/Swagger, integration patterns Front-end engineering Data & integration SQL, NoSQL, data integration, streaming/event platforms such as Kafka, API management, data quality ...

Java Developer (Blockchain)

Location
Greater London, England, United Kingdom
.* Advanced knowledge of Java 17+ features and practical experience with Spring Boot.* Skilled in developing RESTful services, including REST design principles, Swagger/OpenAPI, and Spring REST MVC.* Proficient in building and delivering enterprise-grade Java applications.* Hands-on experience with data structures, algorithms, concurrency, and multi-threading.Database ...

Azure DevOps Architect

Location
Penarth, Wales, United Kingdom
Java/Spring Boot, event‐driven systems using Kafka, and distributed caching technologies such as Redis or Hazelcast. Expertise in API architecture, RESTful services, OpenAPI/Swagger standards, and integration design patterns. Demonstrated experience implementing DevSecOps controls, including SAST, DAST, secrets management, and compliance automation. Excellent stakeholder management, technical ...

Azure DevOps Architect

Location
High Street, England, United Kingdom
Java/Spring Boot, event‐driven systems using Kafka, and distributed caching technologies such as Redis or Hazelcast. Expertise in API architecture, RESTful services, OpenAPI/Swagger standards, and integration design patterns. Demonstrated experience implementing DevSecOps controls, including SAST, DAST, secrets management, and compliance automation. Excellent stakeholder management, technical ...

Lead Azure Engineer

Location
Sheffield, England, United Kingdom
operational readiness. Design, build, and operate back‐end services using Java (Spring Boot) and/or Python (FastAPI/Flask), covering API design with OpenAPI, performance optimisation, and security controls. Develop modern user interfaces with React, focusing on accessible design, reusable components, and efficient state management. Design and maintain ...

Lead Azure Engineer

Hiring Organisation
Teksystems
Location
Sheffield, South Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £550/day
operational readiness. Design, build, and operate back-end services using Java (Spring Boot) and/or Python (FastAPI/Flask), covering API design with OpenAPI, performance optimisation, and security controls. Develop modern user interfaces with React, focusing on accessible design, reusable components, and efficient state management. Design and maintain ...

Principal Java Engineer

Location
Wallingford, England, United Kingdom
Framework 6/Spring Boot 3.5 Hibernate ORM 6.6+, JPA Apache Tomcat 11, IntelliJ IDEA AI Tooling (Claude, Codex, Gitlab Duo, etc) REST APIs, OpenAPI, Microservices, Event-driven architecture (RabbitMQ) Containers, Docker, AWS, Linux CI/CD with GitLab Pipelines & Jenkins Observability: logging, metrics and monitoring MySQL, Apache Solr ...

Senior Java Developer

Hiring Organisation
TXP Technology x People
Location
Telford, Shropshire, United Kingdom
Employment Type
Full-Time
Salary
£550.00 per day
delivering solutions within complex enterprise environments Desirable Skills Experience with any of the following would be advantageous: JPA Kibana Maven Mockito AWS GitLab Helm OpenAPI SQL Shell Scripting Preferred Background Candidates from the following sectors are particularly welcome: Public Sector/Government Banking Financial Services Insurance Utilities Telecommunications Other ...

Senior Java Developer

Hiring Organisation
TXP
Location
Telford, Shropshire, West Midlands, United Kingdom
Employment Type
Contract
Contract Rate
£0.00 - £550 per day
delivering solutions within complex enterprise environments Desirable Skills Experience with any of the following would be advantageous: JPA Kibana Maven Mockito AWS GitLab Helm OpenAPI SQL Shell Scripting Preferred Background Candidates from the following sectors are particularly welcome: Public Sector/Government Banking Financial Services Insurance Utilities Telecommunications Other ...

Senior Software Engineer - Risk & FX

Location
Greater London, England, United Kingdom
factor principles. Cloud‐related tools and services such as Docker, Kubernetes, ElasticSearch, log management systems, and Datadog APM. API specifications conforming to the OpenAPI (Swagger) standard. Large SQL databases (e.g., MySQL) for persistence; familiarity with SQL and complex queries. Infrastructure automation via Terraform and Docker, with knowledge of AWS. ...

Software Engineer - Android Developer

Location
Cheltenham, England, United Kingdom
Kotlin, Jetpack Compose) Backend development (Rust, Python or Go) Git and modern development workflows Docker + CI/CD pipelines API design (REST/OpenAPI) Working in secure or controlled environments Nice to have: AWS or Azure experience Kubernetes Agile delivery experience Secure coding awareness If you like building ...

Golang Full Stack Developer

Hiring Organisation
DNS Info Ltd
Location
Glasgow, Glasgow City, City of Glasgow, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £450/day Inside IR35
proxies/API gateways. Knowledge of TLS/mTLS, SNI, ALPN, and certificate management. Experience with API Gateway and cloud-native networking. Experience with OpenAPI/Swagger. Experience working with distributed systems and high-throughput applications. ...

Lead Software Engineer

Location
Glasgow, Scotland, United Kingdom
cost/latency optimizations for production LLM-based systems Design, build, and operate REST and gRPC APIs and microservices, defining clear contracts using OpenAPI and Protobuf while ensuring backward compatibility, authentication, rate limiting, and observability Apply resilience engineering patterns — including timeouts, retries, and circuit breakers — to ensure reliable, production ...

Lead Developer

Location
Greater London, England, United Kingdom
deployment AWS deployment methods and skills - Lambda, Step Function, DynamoDB, SNS/SQS, S3 etc API integration experience - experience building endpoints, writing, and reading OpenAPI specs Understanding of event driven architecture. Apigee skills desirable though not mandatory Hands‐on involvement with layered systems architectures, designs and shared software concepts ...

Senior Software Engineer (Interoperability)

Location
Sheffield, England, United Kingdom
with source control (e.g. Git). Essential Interview/Application Proven track record in designing and implementing interoperable software systems, APIs (e.g., REST, GraphQL, OpenAPI), message brokers, and robust data integration pipelines utilising standard data exchange formats (e.g. JSON, XML). Essential Interview/Application Advanced familiarity with reproducible ...

Senior Software Engineer / Senior Full-Stack Engineer

Location
Manchester, England, United Kingdom
peers on technical direction within your team Desired Skills and Experience Core Software Engineering JavaScript frameworks (React, NextJS) TypeScript Python Java REST API development OpenAPI/Swagger Cloud & Infrastructure Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Data & Search Technologies Relational Databases ...

Principal Software Engineer

Hiring Organisation
Raytheon
Location
Gloucester, Gloucestershire, South West, United Kingdom
Employment Type
Permanent, Work From Home
technical direction within your team Required experience Core Software Engineering such as: JavaScript frameworks (React, NextJS), TypeScript, Python or Java REST API development/OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch ...

Principal Software Engineer

Hiring Organisation
Hackajob Ltd
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
technical direction within your team Required experience Core Software Engineering such as: JavaScript frameworks (React, NextJS), TypeScript, Python or Java REST API development/OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch ...

Full Stack Software Engineer

Hiring Organisation
Acacia Green Technologies
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
industrial integration experience, particularly MQTT or Modbus TCP. Event-driven and real-time systems, including WebSocket-based communication. Python, SQLite, Grafana, Swagger or OpenAPI, Figma, Lucidchart or Whimsical. Hospitality technology, hotel operations, energy management or smart-building products. Experience of AI-assisted engineering tools used with appropriate review ...

Full Stack Software Engineer

Hiring Organisation
Acacia Green Technologies
Location
EC2M, Broad Street, Greater London, United Kingdom
Employment Type
Permanent
industrial integration experience, particularly MQTT or Modbus TCP. Event-driven and real-time systems, including WebSocket-based communication. Python, SQLite, Grafana, Swagger or OpenAPI, Figma, Lucidchart or Whimsical. Hospitality technology, hotel operations, energy management or smart-building products. Experience of AI-assisted engineering tools used with appropriate review ...

Principal Software Engineer

Location
Kingswood, England, United Kingdom
team Desired Skills and Experience Core Software Engineering across a variety of languages, e.g. JavaScript frameworks (React, NextJS), TypeScript, Python, Java REST API development OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch ...

Advanced Solutions Architect

Location
Greater London, England, United Kingdom
through to component and sequence-level detail — that can be directly implemented by engineering teams Design and evolve RESTful and event-driven APIs using OpenAPI specifications, establishing contracts that support independent team delivery Architect integrations with third-party systems including payment providers, identity services, regulatory reporting endpoints, and operator ...