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138 Contract API jobs in South East London + 20 miles
660 exact matches jobs are outside your preferred location
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.
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.
Web API Services
Web API Services
Familiarity with API design and working in distributed systems
Familiarity with API design and working in distributed systems
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.
Understanding of REST API design
Understanding of REST API design
Understanding and/or experience in managing API-based software businesses
Understanding and/or experience in managing API-based software businesses
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
Large-scale data processing; data modeling; holistic, intent-based API design
Large-scale data processing; data modeling; holistic, intent-based API design
NEW
You understand how customer data moves through CRM systems, including events and API-driven attributes
You understand how customer data moves through CRM systems, including events and API-driven attributes
Proficiency in API design and integration.
Proficiency in API design and integration.
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.
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.
Large-scale data processing; data modeling; holistic, intent-based API design
Large-scale data processing; data modeling; holistic, intent-based API design
Being able to go into the details of API design, payment messages or whatever is required.
Being able to go into the details of API design, payment messages or whatever is required.
Proven track record building and scaling data platforms and API-first products, with the ability to drive innovation and adoption.
Proven track record building and scaling data platforms and API-first products, with the ability to drive innovation and adoption.
Experience with Iron Python and the API-Rest Framework.
Experience with Iron Python and the API-Rest Framework.
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
Currently, our microservices communicate via REST API calls, fostering seamless integration between different services.
Currently, our microservices communicate via REST API calls, fostering seamless integration between different services.
Join Barclays as a Principal Engineer Apigee X, where you'll be part of a platform engineering team that leads the design, implementation, and governance of our new External API gateway solution for our enterprise. This role will be instrumental in shaping our API strategy, ensuring scalability, security, and performance of our digital platforms, and mentoring engineering teams on best practices. * Software engineering, with a focus on API management and integration. * Familiarity with CI/CD tools (e.g., GitLab) and API testing frameworks.
Join Barclays as a Principal Engineer Apigee X, where you'll be part of a platform engineering team that leads the design, implementation, and governance of our new External API gateway solution for our enterprise. This role will be instrumental in shaping our API strategy, ensuring scalability, security, and performance of our digital platforms, and mentoring engineering teams on best practices. * Software engineering, with a focus on API management and integration. * Familiarity with CI/CD tools (e.g., GitLab) and API testing frameworks.
Experience in consuming a RESTful API.
Experience in consuming a RESTful API.
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).