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105 Permanent API jobs in Barnsbury, North London + 20 miles
621 exact matches jobs are outside your preferred location
Rayo, part of the UBDS group, is seeking a Back-End Developer to design, build, and maintain robust APIs and microservices for AWS-hosted platforms. This role involves delivering secure, scalable server-side solutions using Java and Spring Boot, with strong integration across AWS managed services. The successful candidate will also be expected to contribute to DevOps practices, performance optimisation, and team-wide code quality. This opportunity is suitable for experienced developers looking to deepen their technical leadership, as well as those progressing into a senior capacity with hands-on AWS delivery and solution design experience. * Develop and maintain back-end components using Java (11+) and Spring Boot. * Design and implement RESTful APIs and microservices within secure, cloud-native architectures.
Rayo, part of the UBDS group, is seeking a Back-End Developer to design, build, and maintain robust APIs and microservices for AWS-hosted platforms. This role involves delivering secure, scalable server-side solutions using Java and Spring Boot, with strong integration across AWS managed services. The successful candidate will also be expected to contribute to DevOps practices, performance optimisation, and team-wide code quality. This opportunity is suitable for experienced developers looking to deepen their technical leadership, as well as those progressing into a senior capacity with hands-on AWS delivery and solution design experience. * Develop and maintain back-end components using Java (11+) and Spring Boot. * Design and implement RESTful APIs and microservices within secure, cloud-native architectures.
We're making the world of digital assets accessible and secure for everyone. Join the mission. Were the forever innovators. On a mission that goes beyond business. Securing digital ownership in a changing world. Unlocking true freedom. Were revolutionaries. Looking beyond today. Bridging excellence and pragmatism, with ambition and conviction, to push the limits of whats possible. Thats what youll do here, in this playground of innovation. With leadership and trust, youll write the rules of new technology, and create products that redefine security in a digital age. To support our continued growth, were hiring an Engineering Manager to join the Wallet Experience business unit . Youll work directly with the Engineering Director and lead a high-performing team to deliver core features across our top-rated native applications.
We're making the world of digital assets accessible and secure for everyone. Join the mission. Were the forever innovators. On a mission that goes beyond business. Securing digital ownership in a changing world. Unlocking true freedom. Were revolutionaries. Looking beyond today. Bridging excellence and pragmatism, with ambition and conviction, to push the limits of whats possible. Thats what youll do here, in this playground of innovation. With leadership and trust, youll write the rules of new technology, and create products that redefine security in a digital age. To support our continued growth, were hiring an Engineering Manager to join the Wallet Experience business unit . Youll work directly with the Engineering Director and lead a high-performing team to deliver core features across our top-rated native applications.
Rayo, part of the UBDS group, is seeking a Front-End Developer to deliver high-performance, accessible, and maintainable user interfaces for AWS-hosted applications. The successful candidate will work closely with designers, back-end engineers, and DevOps teams to build responsive and scalable front-end solutions. This role is suited to developers with solid experience in modern JavaScript frameworks and a keen understanding of front-end performance and security principles, as well as those ready to provide architectural input and mentor junior colleagues. This opportunity offers a range of responsibilities suitable for both experienced developers and those seeking to grow into senior technical leadership roles within the front-end space. * Build and maintain robust, user-centred front-end applications using React or Angular.
Rayo, part of the UBDS group, is seeking a Front-End Developer to deliver high-performance, accessible, and maintainable user interfaces for AWS-hosted applications. The successful candidate will work closely with designers, back-end engineers, and DevOps teams to build responsive and scalable front-end solutions. This role is suited to developers with solid experience in modern JavaScript frameworks and a keen understanding of front-end performance and security principles, as well as those ready to provide architectural input and mentor junior colleagues. This opportunity offers a range of responsibilities suitable for both experienced developers and those seeking to grow into senior technical leadership roles within the front-end space. * Build and maintain robust, user-centred front-end applications using React or Angular.
Introduce new product offerings such as exotic currencies and API products * Extensive development skills and experience with Java, Spring, Hibernate, Open API, Log4J, etc.
Introduce new product offerings such as exotic currencies and API products * Extensive development skills and experience with Java, Spring, Hibernate, Open API, Log4J, etc.
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Optional knowledge of REST API and SWAGGER HubXCT eg SWIFT MTMX Cross Border will be an asset
Optional knowledge of REST API and SWAGGER HubXCT eg SWIFT MTMX Cross Border will be an asset
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
The OpenPayd platform delivers a suite of banking and payments infrastructure: accounts in over 40 currencies, FX, on/off ramp, international and domestic payments, Open Banking services all via a single API.
The OpenPayd platform delivers a suite of banking and payments infrastructure: accounts in over 40 currencies, FX, on/off ramp, international and domestic payments, Open Banking services all via a single API.
Automate API testing using tools such as Postman, RestAssured, or equivalent . * RestAssured (BDD), Postman (for API testing).
Automate API testing using tools such as Postman, RestAssured, or equivalent . * RestAssured (BDD), Postman (for API testing).
Familiarity with API testing and integration diagnostics
Familiarity with API testing and integration diagnostics
Experience and knowledge of API testing and the use of Postman
Experience and knowledge of API testing and the use of Postman
Restful API Services experience
Restful API Services experience
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Ensure consistency in user experience, API design, and operational processes across the capability.
Ensure consistency in user experience, API design, and operational processes across the capability.
A strong technical acumen and familiarity working with Jira, REST API, JSON, SAML SSO, and Azure DevOps
A strong technical acumen and familiarity working with Jira, REST API, JSON, SAML SSO, and Azure DevOps
Guide teams in the adoption of best practices in API design, modularity, cloud-native patterns, and event-driven systems
Guide teams in the adoption of best practices in API design, modularity, cloud-native patterns, and event-driven systems
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Large-scale data processing; data modeling; holistic, intent-based API design
Large-scale data processing; data modeling; holistic, intent-based API design
Participate in the evolution and development of the REST API. * .NET, ASP.NET Core Web API
Participate in the evolution and development of the REST API. * .NET, ASP.NET Core Web API
Strong grasp of distributed systems design, data architecture, and API development
Strong grasp of distributed systems design, data architecture, and API development
Strong proficiency in Java (preferably Java 17+), Spring Boot, and RESTful API development
Strong proficiency in Java (preferably Java 17+), Spring Boot, and RESTful API development
Experience of RESTful API Design and authentication with OAUTH
Experience of RESTful API Design and authentication with OAUTH
Experience with ARTIQ systems, or controlling hardware via python API.
Experience with ARTIQ systems, or controlling hardware via python API.
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API Testing: Ability to test APIs using tools like Postman or Swagger.
API Testing: Ability to test APIs using tools like Postman or Swagger.
2+ years of in a few of the areas: serverless architecture, event-driven architecture, microservices, API-driven cloud-based products including performance management.
2+ years of in a few of the areas: serverless architecture, event-driven architecture, microservices, API-driven cloud-based products including performance management.
NEW
2+ years of in a few of the areas: serverless architecture, event-driven architecture, microservices, API-driven cloud-based products including performance management.
2+ years of in a few of the areas: serverless architecture, event-driven architecture, microservices, API-driven cloud-based products including performance management.
Related Jobs
Locations
- Shadwell
- The City, City (EC2)
- The City, City (EC3)
- Millwall
- Southwark
- The City, City (EC4)
- Bishopsgate
- Brentford End
- Datchet Common
- Fivensgreen
- City of London
- Central London
- West End
- East London
- Cambridge
- Reading
- South West London
- Milton Keynes
- Oxford
- West London
- London
- Berkshire
- Cambridgeshire
- Surrey
- Oxfordshire
- Bedfordshire
- Buckinghamshire
- Hertfordshire
- West Sussex
- Hampshire
- South East
- East Anglia