Remote OpenAPI Jobs in London

1 to 25 of 29 Remote OpenAPI Jobs in London

Java Developer (SC Cleared)

London, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
/CD: Experience with Jenkins or similar pipelines Collaboration: Agile working with cross-functional teams Frontend experience with React & TypeScript Messaging: Kafka Build tools: Gradle API Design: Swagger/OpenAPI This role is ideal for engineers looking to build on their SC clearance and gain NPPV3 eligibility, while contributing to a long-term, meaningful public sector transformation initiative. #J More ❯
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Senior Software Engineer

London, England, United Kingdom
Hybrid / WFH Options
Made Tech Limited
Made Tech is on a mission to use technology to improve society - for everyone. We help public sector organisations transform, deliver and manage world-class digital products and cloud services. We work with the UK government to modernise legacy technology More ❯
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Senior Payments Engineer

London, England, United Kingdom
Hybrid / WFH Options
SwiftXccess
tests, and champion best engineering practices. You have experience or familiarity with JUnit, Mockito, Selenium, MySQL and NoSQL (Mongo) databases, implementing and consuming APIs, documenting API specs (RAML and OpenAPI), microservices, and tools like Kafka, Zookeeper, Docker, and Kubernetes. Location London, England or Remote and available during Business Hours; This role is open to remote work as our teams More ❯
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Senior Java Developer (DevSecOps) - VP

London, England, United Kingdom
Hybrid / WFH Options
11037 Citibank, N.A. United Kingdom
SQL integration, and change management using Flyway. Utilize Hazelcast for distributed caching and data storage. Deploy and manage applications on OpenShift using microservice architecture. Design and document APIs using OpenAPI standards. Write and maintain unit, integration, and end-to-end tests using JUnit 5, Mockito, WireMock, and Testcontainers. Collaborate with cross-functional teams to implement DevSecOps practices, including SCA … SQL integration, and change management using Flyway. Utilize Hazelcast for distributed caching and data storage. Deploy and manage applications on OpenShift using microservice architecture. Design and document APIs using OpenAPI standards. Write and maintain unit, integration, and end-to-end tests using JUnit 5, Mockito, WireMock, and Testcontainers. Collaborate with cross-functional teams to implement DevSecOps practices, including SCA More ❯
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Senior Java Developer (DevSecOps) - VP

London, United Kingdom
Hybrid / WFH Options
Citigroup Inc
SQL integration, and change management using Flyway. Utilize Hazelcast for distributed caching and data storage. Deploy and manage applications on OpenShift using microservice architecture. Design and document APIs using OpenAPI standards. Write and maintain unit, integration, and end-to-end tests using JUnit 5, Mockito, WireMock, and Testcontainers. Collaborate with cross-functional teams to implement DevSecOps practices, including SCA More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Software Engineer

London, England, United Kingdom
Hybrid / WFH Options
Made Tech Limited
Are you a Software Engineer that wants to actually see the real-world impact from what you help to create? Our mission is simple! We believe we can use tech to make public services better. We also believe this can More ❯
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Full stack Developer

London, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
Nuxt, Angular. Progressive Web Apps (PWA) & SPA Development: Service Workers. SEO & Performance Optimization: PageSpeed Insights, Google Search Console, Google Analytics. Node.js Frameworks: Koa, Express.js, Hapi, Meteor, LoopBack. API Development: OpenAPI (REST APIs), GraphQL, SOAP. Authentication: next-auth, Supabase, Auth0, Keycloak, AWS Cognito. Backend Services & Development: ETLs, scripting tools, command-line tool authoring. Databases Relational Databases: PostgreSQL, MySQL, MariaDB, Microsoft More ❯
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Senior Software Engineer, Backend

London, England, United Kingdom
Hybrid / WFH Options
Cloudflare
code to squash bugs. Our tech stack includes services built using Go, Redis, Postgres, and Cloudflare products (e.g. Workers). We are looking for proficiency in RESTful API design, OpenAPI, Terraform, relational databases (SQL), and modern containerized deployment practices. Examples Of Desirable Skills, Knowledge And Experience 7-10 years of professional experience building and managing software applications at large … scale. Has managed or maintained Terraform providers (not just used them). Strong OpenAPI experience. Strong API design principles. Deep knowledge of Go with strong computer science fundamentals is a must. Experience in designing and architecting large-scale distributed systems. Experience designing, implementing, and documenting customer-facing APIs. Experience debugging, optimizing and identifying possible failures in a large-scale More ❯
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Senior Full-Stack Engineer (Fintech) - Remote | $65,000 USD/year

London, England, United Kingdom
Hybrid / WFH Options
SourceIn
CD Solid testing experience (Jest, Mocha, etc.) Nice to have : Fintech, payment systems or secure coding experience Redis, WebSockets, or real-time system knowledge Familiarity with monorepos, Swagger/OpenAPI, and compliance (PCI, GDPR) Security-First Mindset Our platform handles sensitive financial datasecurity and compliance are central to everything we build. What You'll Work On 15+ microservices (Node.js More ❯
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Java Cloud Engineer - RFT Technology (Accounting Domain)

London, England, United Kingdom
Hybrid / WFH Options
Australian Investors Association Limited
and specifications Your Skills And Experience Experience with all Agile software development frameworks and processes, and software design Experience with Java, Python, Spring-boot, PostgreSQL and Big Query concepts, OpenAPI, Google Cloud Platform (or any other Cloud Platform), SQL Understanding of design concepts and should possess strong knowledge on Domain Driven Design and Hexagonal Architecture Experience in messaging technologies. More ❯
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Senior Full Stack Developer (Remote in Australia, Spain, UK, Brazil, Poland)

London, England, United Kingdom
Hybrid / WFH Options
Rebilly, Inc
the HR Director Offer and Hiring The total process should take around 2 weeks. Technical Requirements Frontend: Vue JS 3, ReactJS, TypeScript Framework: Symfony, Doctrine ORM API: RESTful API, OpenAPI 3.1, Redocly Package Management: Composer, NPM, Yarn Testing: PHPUnit, Vitest, Jest, Cypress, Testing Library Build: Vite, Rollup Version Control: Git JS: ES6/7 Infrastructure: Docker, Terraform, GitHub, AWS More ❯
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Senior Full Stack Developer

London, United Kingdom
Hybrid / WFH Options
Buyapowa Limited
least 3 years of React experience (v18+) Experience with build pipelines, CI, Docker Proficiency in Git Strong HTML and CSS skills Excellent communication skills Knowledge of Sidekiq, RSwag/OpenAPI, Tailwind, GraphQL, React Hook Form, React Query, Terraform WHAT WE OFFER: Opportunity to work with various technologies Encouragement to suggest new ideas and experiments Deliver value quickly, within days More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Technical Business Analyst

London, United Kingdom
Hybrid / WFH Options
N Consulting Limited
We are seeking a Technical Business Analyst with strong experience in capturing business and technical requirements and translating them into detailed API specifications, particularly using JSON and Swagger/OpenAPI . The ideal candidate will act as a bridge between business stakeholders and development teams, ensuring clear, accurate, and testable interfaces for service integration and system communication. Key Responsibilities … Work closely with stakeholders (product owners, developers, QA, and solution architects) to gather and document detailed functional and non-functional requirements. Create and manage API documentation using Swagger/OpenAPI standards. Design and review JSON-based interfaces for RESTful APIs and system integrations. Facilitate workshops and requirement-gathering sessions with technical and non-technical teams. Translate business needs into … Key Skills & Qualifications: Proven experience as a Technical Business Analyst , Systems Analyst, or API Business Analyst in Agile environments. Strong knowledge of RESTful API standards , JSON , and Swagger/OpenAPI specifications. Ability to write and review YAML or JSON-based Swagger files manually or using tools (e.g., SwaggerHub, Postman, Stoplight). Familiarity with API management platforms (e.g., Apigee, Azure More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Technical Business Analyst

London, England, United Kingdom
Hybrid / WFH Options
Natobotics
We are seeking a Technical Business Analyst with strong experience in capturing business and technical requirements and translating them into detailed API specifications, particularly using JSON and Swagger/OpenAPI . The ideal candidate will act as a bridge between business stakeholders and development teams, ensuring clear, accurate, and testable interfaces for service integration and system communication. Key Responsibilities … Work closely with stakeholders (product owners, developers, QA, and solution architects) to gather and document detailed functional and non-functional requirements. Create and manage API documentation using Swagger/OpenAPI standards. Design and review JSON-based interfaces for RESTful APIs and system integrations. Facilitate workshops and requirement-gathering sessions with technical and non-technical teams. Translate business needs into … Key Skills & Qualifications Proven experience as a Technical Business Analyst , Systems Analyst, or API Business Analyst in Agile environments. Strong knowledge of RESTful API standards , JSON , and Swagger/OpenAPI specifications. Ability to write and review YAML or JSON-based Swagger files manually or using tools (e.g., SwaggerHub, Postman, Stoplight). Familiarity with API management platforms (e.g., Apigee, Azure More ❯
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Senior Software Engineer

London, England, United Kingdom
Hybrid / WFH Options
Wikimedia Foundation
actionable tasks to support less 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 review, decision-making, and team More ❯
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Frontend Software Developer with Javascript HTML

London, England, United Kingdom
Hybrid / WFH Options
Free-Work UK
develop from both wireframes and 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 load times Worked in an More ❯
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Senior Frontend Developer

London, England, United Kingdom
Hybrid / WFH Options
Elsewhen
Implement design tokens and CSS variables for theming support. Showcase theme-switching capabilities in Storybook to enable white-labelling. Collaborate with the backend team to provide feedback on APIs (OpenAPI) designs to support front-end requirements. Work with Product and Design teams to understand requirements, address blockers, and align on best practices. Contribute to frontend tooling setups (linting, testing More ❯
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Frontend Software Developer with Javascript HTML

London, England, United Kingdom
Hybrid / WFH Options
Onyx-Conseil
from both wireframes and 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 load times. Worked in an More ❯
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C# Software Engineer

London, United Kingdom
Hybrid / WFH Options
Endeavour Recruitment Solutions
/or Kanban. Experience with XML development: XSD and XSLT (hands-on experience in XSLTs, DTD, XSDs). Experience with HTML DOM manipulation Familiarity with WSDL and Swagger/OpenApi web service definition formats. Experience working with stakeholders and business analysts to gather business requirements to derive functional and non-functional requirements. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Frontend Engineer London

London, England, United Kingdom
Hybrid / WFH Options
Conduktor Inc
ensure our user experience is flawless. Improving performance and navigation and helping to integrate design changes into the frontend Working with our backend teams (Scala backends) using REST services (OpenAPI) to ensure seamless integration with the server side Apply industry best practices to maintain high code quality and test coverage. Lead/Coordinate the frontend engineers in task breakdown More ❯
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Full-Stack Software Engineer

London, England, United Kingdom
Hybrid / WFH Options
Ameba
Masters degree in Computer Science (or related fields). Experience with AWS and Docker. Interest in AI, and familiarity with building LLM-based agents. Exposure to contract-first development (OpenAPI, gRPC/Protocol Buffers). Ability to design scalable and efficient system architectures. Ability to navigate rapidly changing priorities in a growing startup environment. [Optional] Previous experience working at More ❯
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Back-End Engineer (VPN)

London, England, United Kingdom
Hybrid / WFH Options
ProtonMail
systems Experience with Docker or similar containerization technologies Experience with metrics graphing/analysis toolkits such as Grafana and OpenTelemetry Experience with Python and/or Rust Experience with OpenAPI specs or other API documentation frameworks Why should you join Proton? Be part of a movement - Proton is not just a product or service but a community-driven movement More ❯
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Technical Solution Designer - Integrations -(SaaS, API) -Remote

London, United Kingdom
Hybrid / WFH Options
Salt
SaaS, APIs, cloud computing (AWS, Azure), and financial/accounting technologies. Experience with APIs, web services, middleware, and API tools and technologies such as GitHub, REST API, microservices, Postman, OpenAPI, etc. Capacity to create technical assets to improve team efficiency (e.g., Postman collections, automation scripts, web tools). Ability to work collaboratively across product and engineering teams to drive More ❯
Employment Type: Contract
Rate: £500 - £600 per day
Posted:

Backend Engineer (Drive)

London, England, United Kingdom
Hybrid / WFH Options
Proton
cryptography concepts Operational experience such as SRE or on-call Experience with Docker or similar containerization technologies Experience with metrics graphing/analysis toolkits Experience with Node.js Experience with OpenAPI specs or other API documentation frameworks Even if you don’t meet all the requirements listed above, but feel you could still be a great fit, please still apply. More ❯
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Senior Dotnet Developer

Hounslow, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
innovative solutions and technologies that can enhance our application's capabilities and performance Open Standards: Work with us to further our commitment to open standards such as OpenTelemetry and OpenApi About you At least 5 years of professional experience in software development, with a strong focus on .Net technologies. Expertise in .Net framework, C#, and demonstrable experience of building More ❯
Posted:
OpenAPI
London
25th Percentile
£56,250
Median
£57,500
75th Percentile
£75,313
90th Percentile
£105,125