Permanent OpenAPI Job Vacancies

76 to 100 of 215 Permanent OpenAPI Jobs

Sr. AI Systems Engineer

London, United Kingdom
Cervin
science or a related field 6+ years of experience as a Software Engineer Extensive experience in Python Proven experience working with RESTful APIs and OpenAPI, gRPC, and Protobuf, with knowledge of their design best practices and common libraries Proven experience interfacing with AI projects, with a focus on computer More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Fullstack Backend Developer with C# .net

remote
Hybrid / WFH Options
Nexus Jobs Limited
up/managing resources/deploying apps Familiar with JIRA and Confluence Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAP Experience of PowerBI, PowerQuery and R Experience of structured testing and quality assurance More ❯
Employment Type: Permanent
Posted:

Full Stack Engineer

City of London, London, United Kingdom
algo1
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 More ❯
Posted:

Full Stack Engineer

London Area, United Kingdom
algo1
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 More ❯
Posted:

Backend Software Developer with C# and Umbraco

remote
Hybrid / WFH Options
Nexus Jobs Limited
up/managing resources/deploying apps Familiar with JIRA and Confluence Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAP Experience of PowerBI, PowerQuery and R Experience of structured testing and quality assurance More ❯
Employment Type: Permanent
Posted:

QA Engineer Central London ·

London, England, United Kingdom
Aqovia UK Limited
such as JMeter Experience of basic Windows and Unix systems administration, including scripting. Understanding of RESTful HTTP services, including API description languages such as OpenAPI (Swagger). Understanding of Cloud application development, especially Microsoft Azure Experience of working with source control systems, especially git in a team context. Understanding More ❯
Posted:

Software Developer

Edinburgh, Scotland, United Kingdom
Origo
and Experience Although not essential, additional skills/experience in any of the following areas are also beneficial: Technical: DynamoDB, Aurora, AWS Lambda Terraform OpenAPI, JSON Schema React, NextJS Web tooling (e.g., webpack, Vite, esbuild) CI/CD configuration (preferably with Azure Pipelines) Object Relational Mapping (e.g., EF Core More ❯
Posted:

Software Developer

Milton Keynes, England, United Kingdom
Hybrid / WFH Options
Spinbox, Ltd
with: C# and ASP.net (minimum 4 years commercial experience) Web application and CMS development experience (Umbraco/Sitefinity advantageous) Typescript, React or Angular, ServiceStack, OpenAPI/Swagger, Polly, ElasticSearch/Azure Search ORM experience (EF or Telerik OpenAccess) Git and Azure DevOps Development with Azure services (e.g. Functions, Storage More ❯
Posted:

Angular Software Developer

Scotland, United Kingdom
Trapeze Group
level back-end development environments. Proficiency with Spring Boot - for building robust and efficient Java-based microservices and REST APIs. Familiarity with Spring Doc (OpenAPI/Swagger) - for generating clear and consumable API documentation. Experience with Azure API Manager - for managing, monitoring, and securing APIs within Azure environments. Swift More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Model Governance Lead

London, England, United Kingdom
proda.ai
Familiarity with real‐estate concepts (rent rolls, indexation, CAM charges, lease events). Exposure to TypeScript/Python engineering environments and API schema design (OpenAPI/JSON‐Schema). Prior line‐management or mentoring of junior analysts/engineers. Personal Attributes System thinker – sees the bigger picture and designs More ❯
Posted:

Full Stack Engineer React & Java Madrid

Madrid, Spain
Hybrid / WFH Options
UST España & Latam
Java, Spring Boot, RESTful microservices, and event-driven architectures (Kafka, Avro). Strong frontend acumen with React, JavaScript/TypeScript, and API-first integration (OpenAPI). Deep familiarity with Kubernetes orchestration, container security, and infrastructure as code. Technology Stack Backend: Java, Spring Boot, Entity Framework, REST Frontend: React , Angular … JavaScript/TypeScript Data & Messaging: Oracle, PostgreSQL, Kafka, Avro Infrastructure & DevOps: Kubernetes (PKS), Docker, Helm, Terraform APIs & Modeling: API-first (OpenAPI), UML Languages: English C1 What can we offer? ️ 23 days of Annual Leave plus the 24th and 31st of December as discretionary days! ️ Numerous benefits (Health Care Plan More ❯
Employment Type: Permanent
Salary: EUR Annual
Posted:

Senior Java Engineer (Hybrid, Madrid)

Madrid, Spain
Hybrid / WFH Options
UST España & Latam
Java, Spring Boot, RESTful microservices, and event-driven architectures (Kafka, Avro). Strong frontend acumen with React, JavaScript/TypeScript, and API-first integration (OpenAPI). Deep familiarity with Kubernetes orchestration, container security, and infrastructure as code. Architectural & Analytical Skills Proven track record designing for high availability, performance, and … REST Frontend: React, Angular, JavaScript/TypeScript Data & Messaging: Oracle, PostgreSQL, Kafka, Avro Infrastructure & DevOps: Kubernetes (PKS), Docker, Helm, Terraform APIs & Modeling: API-first (OpenAPI), UML Languages: English C1 Spanish Native What can we offer? 23 days of Annual Leave plus the 24th and 31st of December as discretionary More ❯
Employment Type: Permanent
Salary: EUR Annual
Posted:

Software Engineer II

United Kingdom
JPMorgan Chase & Co
financial services industry and their IT systems Practical cloud native experience Professional experience in API management technology e.g APIGEE, Kong, Mulesoft Strong understand of OpenAPI Specification (OAS) for RESTful APIs Preferred qualifications, capabilities, and skills AWS (ECS, EKS, MKS) Kong API Gateway Experience with Performance and Soak Testing Golang More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer II

London, England, United Kingdom
J.P. Morgan
financial services industry and their IT systems Practical cloud native experience Professional experience in API management technology e.g APIGEE, Kong, Mulesoft Strong understand of OpenAPI Specification (OAS) for RESTful APIs Preferred qualifications, capabilities, and skills AWS (ECS, EKS, MKS) Kong API Gateway Experience with Performance and Soak Testing Golang More ❯
Posted:

Lead Front End Engineer(Agentic Intelligence)

London, England, United Kingdom
GroupM
/CD environment Using containers/Docker Atomic or material design Agile/Scrum Sound understanding of coding standards and conventions Documentation Familiarity with OpenAPI NICE TO HAVE Familiarity with Python and Go HATEOAS/Hypermedia APIs u00A0 If you are ready to be at the forefront of the More ❯
Posted:

Lead Front End Engineer(Agentic Intelligence)

London, England, United Kingdom
Choreograph
/CD environment Using containers/Docker Atomic or material design Agile/Scrum Sound understanding of coding standards and conventions Documentation Familiarity with OpenAPI Web Accessibility (specifically WAI-ARIA) Familiarity with Python and Go HATEOAS/Hypermedia API Life at WPP Media & Benefits Our passion for shaping the More ❯
Posted:

Senior Software Engineer

London, England, United Kingdom
Hybrid / WFH Options
Wikimedia Foundation
experienced team members; Contributing to the adoption and advocacy of API-first development, and influencing best practices in system design, SLOs/SLAs, and OpenAPI Specification; Championing product metrics: ensuring that key user journeys are instrumented and monitored to guide decisions and evaluate success; Leading by example in code More ❯
Posted:

React Developer

Reading, England, United Kingdom
JR United Kingdom
microservice-based applications, focusing on React front-end components and shift-left testing strategies Technical documentation for engineering teams API development, including Swagger and OpenAPI (optional) Employment of testing frameworks Use of cloud technologies Modern containerized solution architectures This is an inside IR35 contract with the expectation to be More ❯
Posted:

Test Engineer

Basingstoke, England, United Kingdom
La Fosse
experience working with CI/CD pipeline tools , including Jenkins and Azure DevOps Pipelines Proficient in using YAML for defining pipelines and API contracts (OpenAPI/Swagger) Deep familiarity with the Microsoft ecosystem , particularly Azure DevOps for project and release management Interview Processes: 2 stage Process 1st stage: Technical More ❯
Posted:

Senior Software Engineer (Golang)

London, United Kingdom
Different Technologies Pty Ltd
4. Good understanding of Container deployments 5. Good understating of CI/CD pipelines 6. Demonstratable knowledge of the Public Cloud 7. Working with OpenAPI specifications and APIs generally 8. Linux system admin and network operations Desirable 9. Good understanding of IP Networking IPv4 and IPv6 stack 10. Awareness More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Frontend Software Developer with Javascript HTML

London, England, United Kingdom
Hybrid / WFH Options
Free-Work UK
full designs Experience of working with and developing alongside a CMS (preferably with Umbraco) Capable of working with multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAP Good knowledge of technical SEO best practices, familiar with LightHouse on assessing page More ❯
Posted:

Full Stack Dot Net Software Developer

West London, Greater London
Nexus Jobs Limited
/managing resources/deploying apps Experience in implementing business process automation Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger PowerBI, PowerQuery, Dax & M Other API messaging formats e.g. JSON, XML, SOAP Experience of structured testing and quality assurance approaches (e.g. Test More ❯
Employment Type: Permanent
Posted:

Full Stack .Net Software Developer

West London, Greater London
Nexus Jobs Limited
/managing resources/deploying apps Experience in implementing business process automation Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger PowerBI, PowerQuery, Dax & M Other API messaging formats e.g. JSON, XML, SOAP Experience of structured testing and quality assurance approaches (e.g. Test More ❯
Employment Type: Permanent
Posted:

Front and Backend C# Dot Net Javascript Software Developer with Umbraco

West London, Greater London
Nexus Jobs Limited
/managing resources/deploying apps Experience in implementing business process automation Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger PowerBI, PowerQuery, Dax & M Other API messaging formats e.g. JSON, XML, SOAP Experience of structured testing and quality assurance approaches (e.g. Test More ❯
Employment Type: Permanent
Posted:

Full Stack Dot Net Software Developer

London, England, United Kingdom
Jas Gujral
/managing resources/deploying apps Experience in implementing business process automation Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger PowerBI, PowerQuery, Dax & M Other API messaging formats e.g. JSON, XML, SOAP Experience of structured testing and quality assurance approaches (e.g. Test More ❯
Posted:
OpenAPI
25th Percentile
£50,000
Median
£55,000
75th Percentile
£60,000
90th Percentile
£81,250