OpenAPI Jobs in London

1 to 25 of 32 OpenAPI Jobs in London

Full Stack Software Engineer (Golang/Typescript)

London Area, United Kingdom
Safe Intelligence
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 ❯
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Full Stack Software Engineer (Golang/Typescript)

City of London, London, United Kingdom
Safe Intelligence
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 ❯
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Full Stack Software Engineer (Golang/Typescript)

london, south east england, united kingdom
Safe Intelligence
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 ❯
Posted:

Full Stack Software Engineer (Golang/Typescript)

london (city of london), south east england, united kingdom
Safe Intelligence
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 ❯
Posted:

.Net developer

London, South East, England, United Kingdom
eTeam Inc
containerized deployments Required Technical Skills • 5+ years of experience with .NET development (C#, ASP.NET Core) • Strong experience with Entity Framework Core and PostgreSQL • Proficiency in RESTful API design and OpenAPI/Swagger documentation • Experience with authentication systems (OAuth2, JWT, Azure AD) • Knowledge of containerization (Docker) and Kubernetes/OpenShift • Experience with background job processing and scheduled tasks • Understanding of More ❯
Employment Type: Contractor
Rate: £280 - £297 per day
Posted:

Front End Developer - SC Cleared - Outside IR35

london, south east england, united kingdom
iO Associates
record architecting complex SPAs with modern routing (React Router v7) ☑️ Strong knowledge of state management (Zustand, TanStack Query) ☑️ Skilled in Vite, pnpm, and Git workflows ☑️ Experience integrating with APIs (OpenAPI/Orval) and real-time features (WebSockets, streaming data) ☑️ Deep understanding of browser APIs, performance optimisation, and responsive design ☑️ Strong experience with authentication flows (Azure MSAL/OAuth2) ☑️ Excellent More ❯
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Full Stack Engineer

London Area, United Kingdom
Fimatix
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 ❯
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Full Stack Engineer

City of London, London, United Kingdom
Fimatix
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 ❯
Posted:

Full Stack Engineer

london, south east england, united kingdom
Fimatix
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 ❯
Posted:

Full Stack Engineer

london (city of london), south east england, united kingdom
Fimatix
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 ❯
Posted:

Backend Engineer

London Area, United Kingdom
algo1
designed for scale & flexibility. Responsibilities: 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 ❯
Posted:

Backend Engineer

City of London, London, United Kingdom
algo1
designed for scale & flexibility. Responsibilities: 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 ❯
Posted:

Backend Engineer

london, south east england, united kingdom
algo1
designed for scale & flexibility. Responsibilities: 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 ❯
Posted:

Backend Engineer

london (city of london), south east england, united kingdom
algo1
designed for scale & flexibility. Responsibilities: 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 ❯
Posted:

Senior Engineer - Azure - Edinburgh, London

London, UK
Hybrid / WFH Options
Aberdeen
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 ❯
Posted:

Full Stack Engineer

London Area, United Kingdom
algo1
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 ❯
Posted:

Full Stack Engineer

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

Full Stack Engineer

london, south east england, united kingdom
algo1
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 ❯
Posted:

Full Stack Engineer

london (city of london), south east england, united kingdom
algo1
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 ❯
Posted:

Front End Software Engineer (Typescript)

London Area, United Kingdom
Hybrid / WFH Options
Safe Intelligence
development (ideally using Golang). This includes knowledge of database (MongoDB) access patterns (e.g., Optimistic Concurrency Control - OCC) and schema design, domain-driven architecture, and concurrency. 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 ❯
Posted:

Front End Software Engineer (Typescript)

City of London, London, United Kingdom
Hybrid / WFH Options
Safe Intelligence
development (ideally using Golang). This includes knowledge of database (MongoDB) access patterns (e.g., Optimistic Concurrency Control - OCC) and schema design, domain-driven architecture, and concurrency. 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 ❯
Posted:

Front End Software Engineer (Typescript)

london, south east england, united kingdom
Hybrid / WFH Options
Safe Intelligence
development (ideally using Golang). This includes knowledge of database (MongoDB) access patterns (e.g., Optimistic Concurrency Control - OCC) and schema design, domain-driven architecture, and concurrency. 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 ❯
Posted:

Front End Software Engineer (Typescript)

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Safe Intelligence
development (ideally using Golang). This includes knowledge of database (MongoDB) access patterns (e.g., Optimistic Concurrency Control - OCC) and schema design, domain-driven architecture, and concurrency. 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 ❯
Posted:

Lead API Solution Architect

London, South East, England, United Kingdom
Venn Group
banking or regulated financial environments. Working knowledge of payments, KYC, lending, trading, or regulatory reporting. Familiarity with Open Banking standards and financial API ecosystems. Strong understanding of REST, JSON, OpenAPI, and event-driven integration. Experience with API platforms such as Azure API Management or Apigee . Knowledge of secure messaging and integration tools (e.g. Kafka, IBM MQ). Experience More ❯
Employment Type: Contractor
Rate: £650 - £1,000 per day
Posted:

Lead API Solution Architect - Financial Services / Banking

London, United Kingdom
Adecco
and cloud systems Maintain compliance with financial regulations Monitor and optimise API performance and developer experience Experience Required: Proven leadership in large-scale API programmes Expertise in REST, OAuth2, OpenAPI, and API security Familiarity with banking processes and Open Banking standards Cloud (Azure/GCP), CI/CD, and integration tools (Kafka, IBM MQ) Strong stakeholder management and strategic More ❯
Employment Type: Contract
Posted:
OpenAPI
London
10th Percentile
£66,875
25th Percentile
£72,500
Median
£75,000
75th Percentile
£77,500