25 of 25 OpenAPI Jobs

Apigee Developer

Hiring Organisation
ARM
Location
Slough, Berkshire, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £470/day
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 ...

Lead Software Developer (m/f/d)

Hiring Organisation
Atos Technologies Austria GmbH
Location
Wien, Austria
Employment Type
Permanent
Salary
EUR Annual
mTLS, and secure-by-design principles for sensitive or regulated systems. API Design: Strong expertise crafting standard RESTful APIs and asynchronous event schemas using OpenAPI/AsyncAPI specifications. Communication: Excellent written and verbal communication skills in English, with a proven ability to explain complex distributed-systems concepts to both ...

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 ...

Java Software Engineer

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
containerisation CI/CD pipelines (Jenkins or similar) Working in agile, multi-disciplinary teams Desirable experience Kafka Liquibase or similar migration tooling Swagger/OpenAPI Gradle React TypeScript Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have ...

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 ...

Node.js Developer - Remote - BPSS

Hiring Organisation
Stealth IT Consulting
Location
United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Title: Node.js Developer Rate: £529 (Inside IR35) Duration: 6 months Location: Remote Clearance: BPSS Stages: 1 Stage Technology Node.js API development - REST, OpenAPI Web development - HAPI Databases - PostgreSQL, MongoDB, Redis Unit testing - Jest, Lab Source Control - Git Cloud hosting - Azure/AWS Containerisation - Docker, Kubernetes, ECS CI and release ...

C# Senior Software Developer

Hiring Organisation
Adria Solutions Ltd
Location
Preston, Lancashire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £75000/annum
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 ...

Senior Python Developer

Hiring Organisation
Spencer Rose Ltd
Location
Watford, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 75,000 Annual
performance, reliability, and maintainability. Python Back End development, primarily using FastAPI and modern API patterns. Strong understanding of RESTful API design, schema validation, and OpenAPI/Swagger. Experience working with messaging and eventing platforms such as Kafka, RabbitMQ, Azure Service Bus, MQTT, or similar. Cloud-native development experience ...

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 ...

Manager - Lead AI Engineer

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
knowledge-sharing initiatives Skills & Experience Required Significant senior backend development experience with strong Python proficiency (async programming, concurrency, multithreading) Expertise in RESTful API design, OpenAPI/Swagger documentation and API lifecycle best practices Hands-on experience with ML libraries: PyTorch, PySpark, scikit-learn, Hugging Face Transformers Proficiency ...

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 ...

Associate Data Architect

Hiring Organisation
Elsevier
Location
Greater London, United Kingdom
Employment Type
Full Time
with data platforms such as Snowflake or data lakes Designing ETL/ELT pipelines Experience with event-driven architectures API design experience (REST, GraphQL, OpenAPI) Modern Architecture Microservices architecture Event streaming and messaging platforms Distributed systems design Collaboration & Leadership Experience working closely with software engineering teams Ability to guide ...

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 ...

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 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 ...

OSS/BSS Solution architect

Hiring Organisation
IBU CONSULTING LTD
Location
London, United Kingdom
Employment Type
Contract
operator environments - TMF standards: Product Ordering (TMF641), Service Ordering, Service Activation, Service Inventory (TMF638) API Development & Integration - Strong expertise in API lifecycle design using OpenAPI specifications (OAS) - can read and write API specs - Hands-on with TMF/ODA frameworks for product and service APIs - Expertise in integration patterns … OpenAPI , REST, gRPC , GraphQL ) - Strong background in pub/sub and event brokers (Kafka, RabbitMQ) including security (TLS/SASL), scaling and schema evolution - Knowledge of headers, correlation/tracking IDs, authentication/authorisation and versioning Product, Data & Application Foundations - Product and data modelling: can actually do BSS/ ...

SC Cleared Node.js Developer

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
Up to £560 per day + Inside IR-35
based platforms. What you'll be doing: Translating business and user requirements into effective technical designs Building APIs and backend services using Node.js (REST, OpenAPI) Developing user-focused services, putting accessibility and usability first Writing clean, reusable, and maintainable code Working with shared/common government tech stacks (Node.js … including OWASP principles and vulnerability management Collaborating with stakeholders and communicating technical concepts clearly Tech stack includes: Node.js, HAPI (web framework) API development (REST, OpenAPI) PostgreSQL, MongoDB, Redis Jest and Lab for testing Git for source control Cloud platforms (AWS, Azure) Docker, Kubernetes, ECS CI/CD tools (Azure ...

Node.js REST OpenAPI HAPI Developer - MUST HAVE SC CLEARANCE - Remote - 6 months+

Hiring Organisation
Octopus Computer Associates
Location
United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Node.js REST OpenAPI HAPI Developer - MUST HAVE SC CLEARANCE - Remote - 6 months+/RATE: £550 per day inside IR35 One of our Blue Chip Clients is urgently looking for a Node.js REST OpenAPI HAPI Developer For this role you can work remotely. Please find some details below: Clearance … required: SC Cleared Location: Remote IR35 Status: PAYE via Umbrella company only Job Description: Technology Node.js API development - REST, OpenAPI Web development - HAPI Databases - PostgreSQL, MongoDB, Redis Unit testing - Jest, Lab Source Control - Git Cloud hosting - Azure/AWS Containerisation - Docker, Kubernetes, ECS CI and release - ADO, Jenkins, Github ...

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 ...

Engineering Team Lead

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
clarity to build foundational infrastructure. Define, publish, and version canonical domain models for Swap's core entities. Own the delivery of schemas and OpenAPI definitions. Establish and maintain a lightweight governance pipeline: review process, ownership model, versioning policy, and deprecation strategy. Translating software requirements into working, high-performance software. … decisions. 5+ years of backend or full‐stack engineering experience, with strong TypeScript/JavaScript and Node.js skills. Experience designing versioned APIs (REST/OpenAPI and/or GraphQL with schema governance). Experience working in platform or infrastructure engineering roles — comfortable with work whose primary customer is other ...