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41 Contract API jobs in The City, City of London + 20 miles
328 exact matches jobs are outside your preferred location
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).
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).
Networking and Security: Manage Azure networking components including Firewalls, Front Door, Application Gateway, and API Management, ensuring resilience, performance, and compliance. * Solid understanding of Azure Firewall, Front Door, Application Gateway, API Management, and associated services
Networking and Security: Manage Azure networking components including Firewalls, Front Door, Application Gateway, and API Management, ensuring resilience, performance, and compliance. * Solid understanding of Azure Firewall, Front Door, Application Gateway, API Management, and associated services
Prior experience with Docker and API development
Prior experience with Docker and API development