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296 Contract API jobs in South East + 20 miles
Rayo, part of the UBDS group, is seeking a Full-Stack Developer to contribute to the development and support of cloud-native applications deployed on Amazon Web Services (AWS). The successful candidate will work across the full software development lifecycle, combining solid Java/Spring Boot back-end development with modern front-end skills using frameworks such as React or Angular. The role offers opportunities to support, design, and build scalable and secure solutions for high-impact public sector programmes. This position is suitable for candidates with foundational experience in full-stack development, as well as those with deeper technical capability looking to further progress within an Agile delivery environment. * Design, develop, and maintain scalable full-stack solutions hosted on AWS. * Build and integrate RESTful APIs using Java and Spring Boot.
Rayo, part of the UBDS group, is seeking a Full-Stack Developer to contribute to the development and support of cloud-native applications deployed on Amazon Web Services (AWS). The successful candidate will work across the full software development lifecycle, combining solid Java/Spring Boot back-end development with modern front-end skills using frameworks such as React or Angular. The role offers opportunities to support, design, and build scalable and secure solutions for high-impact public sector programmes. This position is suitable for candidates with foundational experience in full-stack development, as well as those with deeper technical capability looking to further progress within an Agile delivery environment. * Design, develop, and maintain scalable full-stack solutions hosted on AWS. * Build and integrate RESTful APIs using Java and Spring Boot.
Experience with API design and implementing authentication/authorisation flows
Experience with API design and implementing authentication/authorisation flows
Familiarity with real-time data processing, event-driven systems, and API-first design.
Familiarity with real-time data processing, event-driven systems, and API-first design.
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Familiarity with API testing tools (e.g., Postman, RestAssured).
Familiarity with API testing tools (e.g., Postman, RestAssured).
The architect will lead strategic initiatives including Azure Landing Zones, cloud migrations, Kubernetes-based microservices, SD-WAN/SASE integration, API architecture, and Infrastructure-as-Code (IaC) using Terraform, while working closely with the Head of Strategy, Architecture & Platform Engineering. API Integration & Design * Design and govern enterprise API architecture for cloud-native and hybrid applications * Define standards for API security, versioning, throttling, and lifecycle management * API Design & Management (e.g., Apigee, Azure API Management)
The architect will lead strategic initiatives including Azure Landing Zones, cloud migrations, Kubernetes-based microservices, SD-WAN/SASE integration, API architecture, and Infrastructure-as-Code (IaC) using Terraform, while working closely with the Head of Strategy, Architecture & Platform Engineering. API Integration & Design * Design and govern enterprise API architecture for cloud-native and hybrid applications * Define standards for API security, versioning, throttling, and lifecycle management * API Design & Management (e.g., Apigee, Azure API Management)
Experience and knowledge of API testing and the use of Postman
Experience and knowledge of API testing and the use of Postman
Azure API Management (APIM)
Azure API Management (APIM)
Select, implement, and optimise testing tools and environments across functional, API, and performance testing.
Select, implement, and optimise testing tools and environments across functional, API, and performance testing.
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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.
Understanding of Workfront Fusion or API-driven workflows (handled by a dedicated integration team).
Understanding of Workfront Fusion or API-driven workflows (handled by a dedicated integration team).
We believe in good RESTful API design for communication between our services and their various parts, and also for exchanging data and functionality with external services.
We believe in good RESTful API design for communication between our services and their various parts, and also for exchanging data and functionality with external services.
We are building the first European Investment API that empowers businesses to offer seamless investment. Our Marketing team ensures Upvests Investment API is widely recognised as the best on the market. * 5+ years of product marketing experience in B2B SaaS, ideally within fintech, investments, or API-driven infrastructure.
We are building the first European Investment API that empowers businesses to offer seamless investment. Our Marketing team ensures Upvests Investment API is widely recognised as the best on the market. * 5+ years of product marketing experience in B2B SaaS, ideally within fintech, investments, or API-driven infrastructure.
Familiarity with API design and working in distributed systems
Familiarity with API design and working in distributed systems
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Experience designing, building and deploying user-facing, and/or API-based products. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management.
Experience designing, building and deploying user-facing, and/or API-based products. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management.
Strong API development and database experience (Postgres/Oracle + SQL).
Strong API development and database experience (Postgres/Oracle + SQL).
Backend: AWS serverless Lambda, API Gateway, DynamoDB, and S3
Backend: AWS serverless Lambda, API Gateway, DynamoDB, and S3
Strong knowledge of C++ and API design
Strong knowledge of C++ and API design
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Proficiency in API design and integration.
Proficiency in API design and integration.
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Conduct API testing to ensure robust and reliable integration between services. * Understanding of API testing , including tools like Postman or similar.
Conduct API testing to ensure robust and reliable integration between services. * Understanding of API testing , including tools like Postman or similar.
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Strong knowledge of C++ and API design Api DesignC++Linux
Strong knowledge of C++ and API design Api DesignC++Linux
Experience with Azure services such as Azure App Services, Azure Functions, Azure API Management, Azure Postgres Database, VPN, PrivateLink.
Experience with Azure services such as Azure App Services, Azure Functions, Azure API Management, Azure Postgres Database, VPN, PrivateLink.
Responsibilities include understanding the client's world and use cases, managing requirements, platform training and configuration, dashboard creation, API enablement, partner workspace management (Newsletters, Reports), and troubleshooting. * Configure and optimise the Signal platform (dashboards, newsletters, reports, partner workspaces, API setups).
Responsibilities include understanding the client's world and use cases, managing requirements, platform training and configuration, dashboard creation, API enablement, partner workspace management (Newsletters, Reports), and troubleshooting. * Configure and optimise the Signal platform (dashboards, newsletters, reports, partner workspaces, API setups).
Proficient in headless CMS integrations (Kontent.ai, Contentful) and API-driven development
Proficient in headless CMS integrations (Kontent.ai, Contentful) and API-driven development
Strong experience in software engineering with proficiency in a language such as Python for API development, Data engineering and automation tasks * Experience in API development using tools such as FastAPI or Flask, enabling data access and integration across systems
Strong experience in software engineering with proficiency in a language such as Python for API development, Data engineering and automation tasks * Experience in API development using tools such as FastAPI or Flask, enabling data access and integration across systems
Support reporting automation for email, push, and newsletter engagement (e.g., SailThru API integrations, open/click/bounce analysis).
Support reporting automation for email, push, and newsletter engagement (e.g., SailThru API integrations, open/click/bounce analysis).
Related Jobs
Locations
- London
- Surrey
- City of London
- South West London
- Central London
- South East London
- Tunbridge Wells
- East London
- Dorking
- West End
- Scotland
- Birmingham
- Reading
- Hampshire
- Oxford
- Southampton
- Staffordshire
- Slough
- West Sussex
- East Anglia
- County Antrim
- Oxfordshire
- Wales
- Dundee
- Midlothian
- East Sussex
- Chester
- Poole
- Cochrane Park
- Derby
- Yorkshire
- Bristol
- Greater Manchester
- Cheshire
- Gloucestershire
- Hertfordshire
- West Yorkshire
- Glasgow
- York
- Edinburgh
- Leeds
- Colchester
- North West
- Berkshire
- Merseyside
- Lancashire
- Milton Keynes
- Buckinghamshire
- West Midlands
- Abingdon