18 of 18 OpenAPI Jobs in the UK excluding London

Apigee Developer

Hiring Organisation
ARM
Location
Slough, Berkshire, United Kingdom
Employment Type
Contract
deployments Required Skills & Experience: Proven experience working with Apigee (Edge or Apigee X/Hybrid) Strong understanding of API design principles (RESTful services, OpenAPI/Swagger) Experience implementing API security (OAuth2, JWT, SAML, TLS) Hands-on experience with JavaScript (for Apigee policies) and API policy configuration Familiarity with microservices ...

Java Full Stack Developer

Hiring Organisation
Response Informatics
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Permanent
management Skilled in creating rich, interactive React/Angularbased front-end applications. Solid coding practices for RESTful API development and consumption with understanding of OpenAPI/Swagger specifications Understanding of API security protocols and authentication mechanisms (OAuth2, JWT) including TLS. Strong SQL knowledge including isolation levels and transaction management ...

Senior Java Developer

Hiring Organisation
Hays
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
Kafka, SQS) Serverless technologies (e.g., AWS Lambda) Monitoring/logging tools (ELK, Splunk, Dynatrace) ORM technologies (JPA, Hibernate) API documentation tools (e.g., Swagger/OpenAPI) Test tools (Postman, Selenium, Axe) Exposure to AI-assisted development tools (e.g., GitHub Copilot) In return, you will be rewarded with a market leading ...

Software Engineer - Android Developer

Hiring Organisation
Talent Locker
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £530 per day
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 ...

Informatics Specialist

Hiring Organisation
Pure Resourcing Solutions Limited
Location
Cambridge, Great Abington, Cambridgeshire, United Kingdom
Employment Type
Permanent
Salary
£70000/annum
data Resolving bottlenecks in data retrieval through indexing strategies, ORM-generated SQL optimisation and caching Establishing and enforcing API standards across the team, including OpenAPI/Swagger documentation Building connectors to integrate third-party scientific tools such as Dotmatics, Revvity Signals or Titian Mosaic with internal data stores Designing ...

C# Senior Software Developer

Hiring Organisation
Adria Solutions
Location
Preston, Lancashire, North West, United Kingdom
Employment Type
Permanent
Salary
£75,000
Framework Core (DbContext, LINQ, Migrations) Debug and trace request flows from UI Controller API Database Response Maintain and publish API documentation via Swagger/OpenAPI Ensure API security, reliability, and performance (error handling, retry logic, logging, timeouts, CORS) Collaborate with database, infrastructure, and QA teams for portal ...

API Backend Engineer (MCP)

Hiring Organisation
AMS Contingent
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
understanding of cloud networking concepts (VPCs, subnets, routing, load balancing, private connectivity). API standards and industry best practices, including: RESTful API design and OpenAPI specifications API security (OAuth 2.0, OpenID Connect, mTLS) Secure-by-design, zero-trust, resilience, and fault-tolerant patterns MCP, A2A, and AP2 protocols, including ...

Senior Software Engineer - Transfers (Client Journeys)

Hiring Organisation
Hargreaves Lansdown
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent
REST/V1) - authorizers, routing, gateway responses Middy middleware framework Integration patterns: cross-account STS AssumeRole, Secrets Manager, DynamoDB, SNS RESTful API design and OpenAPI specifications AWS & Infrastructure AWS CDK and/or SST for infrastructure as code Core services: Lambda, API Gateway, DynamoDB, VPC, IAM, KMS, Secrets Manager ...

Lead Java Developer

Hiring Organisation
TXP Technology x People
Location
Telford, Shropshire, England, United Kingdom
Employment Type
Full-Time
Salary
£550 - £600 per day
ensure quality delivery. Required Skills Java, Spring Boot, JUnit, Kubernetes. Desirable Skills JPA, Maven, Mockito, AWS, GitLab CI/CD, Helm, OpenAPI, SQL, Kibana, Shell scripting. Clearance BPSS eligibility Mandatory SC Clearance preferred, alternatively must be eligibleLocation: Telford - once a week ...

Lead Java Developer

Hiring Organisation
TXP
Location
Telford, Shropshire, West Midlands, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £600 per day
ensure quality delivery. Required Skills Java, Spring Boot, JUnit, Kubernetes. Desirable Skills JPA, Maven, Mockito, AWS, GitLab CI/CD, Helm, OpenAPI, SQL, Kibana, Shell scripting. Clearance BPSS eligibility Mandatory SC Clearance preferred, alternatively must be eligible Location: Telford - once a week ...

Software Engineer

Hiring Organisation
IMServ Europe Ltd
Location
MK14, Great Linford, Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £65000/annum
deadlines Commitment to continuous learning and improvement Experience (Desirable) Experience with Azure services (e.g. Functions, Service Bus, API Management) Experience building APIs (Swagger/OpenAPI) Knowledge of CI/CD pipelines and DevOps practices Experience with automated testing tools Benefits 28 days' holiday plus Bank Holidays Buy & sell annual ...

Senior .NET Developer

Hiring Organisation
Charles Jenson Recruitment Ltd
Location
Brighton, East Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
know when to use a relational schema and when to lean on NoSQL for speed and flexibility. Collaborator: You can design clean, documented APIs (OpenAPI/Swagger) that make life easy for your front-end partner. Agile Mindset: You enjoy a fast-paced environment where you can influence ...

Software Architect - C#

Hiring Organisation
Jobleads-UK
Location
Basingstoke, England, United Kingdom
scale Experience defining architecture principles, standards, and best practices Strong understanding of modern development and deployment practices Experience with specification tools such as AsyncAPI, OpenAPI, and JSON Schema Familiarity with containerised environments and cloud platforms Experience with technologies such as MongoDB, PostgreSQL, Redis, and RabbitMQ Strong analytical, problem-solving ...

Senior Software Developer C and Linux

Hiring Organisation
System Recruitment
Location
Lymington, Hampshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
£250 - £350 per day
level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly low-level environments, without reliance on full-stack frameworks Designing for defensive input ...

Senior Backend Engineer

Hiring Organisation
MarkIT Placements
Location
Didcot, Oxfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
Focus) Design and evolve scalable backend services in Python using FastAPI for high-availability, high-throughput workloads. Build well-versioned RESTful APIs aligned to OpenAPI/Swagger, with strong conventions for consistency, idempotency, and backward compatibility. Implement authentication and authorization using OAuth2/OIDC, session management, and fine-grained … experience, with a strong focus on backend development in Python and with event-driven architectures. Proven experience designing and operating production REST APIs with OpenAPI/Swagger. Deep understanding of relational database design, indexing, performance tuning, and migrations (PostgreSQL). Proficiency with containerisation (Docker) and Git-based workflows. Experience ...

MuleSoft & Salesforce Agentic Engineer

Hiring Organisation
Arbuthnot Latham & Co., Limited
Location
Wolverhampton, West Midlands, United Kingdom
Employment Type
Permanent
hands-on experience designing and delivering MuleSoft integrations in an enterprise environment. Proven experience building and maintaining API-led architectures, including RESTful APIs and OpenAPI specifications. Solid experience working with Salesforce, including customisation, integration and automation. Knowledge of existing and emerging MuleSoft technologies such as Agent Fabric, Vibes, Gateway ...

Software Engineer - Java /Back End

Hiring Organisation
Som3
Location
Basingstoke, Hampshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £65000/annum
management (Flyway/Liquibase), indexing strategy, and query optimisation. Design, document, and maintain RESTful and/or GraphQL APIs, ensuring consistency, versioning, and thorough OpenAPI/Swagger documentation. Identify, catalogue, and systematically address technical debt in collaboration with the wider Your background and experience will include Great communication skills … design. PostgreSQL skills: schema design, complex query writing, index optimisation, and migration tooling (Flyway or Liquibase). Experience designing and documenting APIs using OpenAPI/Swagger Proficiency with build tools - Maven or Gradle - and a modern Java development workflow. Understanding of software design principles (SOLID, DRY, Clean Architecture) Familiarity ...

Software Engineer - Java /Back End

Hiring Organisation
Som3
Location
Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £65000/annum
management (Flyway/Liquibase), indexing strategy, and query optimisation. Design, document, and maintain RESTful and/or GraphQL APIs, ensuring consistency, versioning, and thorough OpenAPI/Swagger documentation. Identify, catalogue, and systematically address technical debt in collaboration with the wider Your background and experience will include Great communication skills … design. PostgreSQL skills: schema design, complex query writing, index optimisation, and migration tooling (Flyway or Liquibase). Experience designing and documenting APIs using OpenAPI/Swagger Proficiency with build tools - Maven or Gradle - and a modern Java development workflow. Understanding of software design principles (SOLID, DRY, Clean Architecture) Familiarity ...