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73 Contract API jobs in South East + 20 miles
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Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn).
Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn).
FEATURED
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Lead React Native Engineer / Engineering manager
Lead React Native Engineer / Engineering manager
Sanderson Recruitment
City of London (EC1), EC1
£600 - £700 per day + Outside IR35
Strong API/integration experience: REST / GraphQL, auth flows, contract design and resilience patterns
Strong API/integration experience: REST / GraphQL, auth flows, contract design and resilience patterns
FEATURED
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Position Overview - Job Title Lead Engineer - Location London - Corporate Title Vice President - You will play a key role in the transformation of Rates and Credit Fixed Income technology landscape. As part of our multi-year platform modernisation project, you will be responsible for building a suite of new, real-time, high-performance applications supporting various trading workflows. You will be involved in architecting solutions across the stack, encouraging best practices and working closely with Business stakeholders to build a maintainable, operationally efficient and scalable platform to last the next decade. What well offer you - A healthy, engaged and well-supported workforce are better equipped to do their best work and, more importantly, enjoy their lives inside and outside the workplace. Thats why we are committed to providing an environment with your development and ...
Position Overview - Job Title Lead Engineer - Location London - Corporate Title Vice President - You will play a key role in the transformation of Rates and Credit Fixed Income technology landscape. As part of our multi-year platform modernisation project, you will be responsible for building a suite of new, real-time, high-performance applications supporting various trading workflows. You will be involved in architecting solutions across the stack, encouraging best practices and working closely with Business stakeholders to build a maintainable, operationally efficient and scalable platform to last the next decade. What well offer you - A healthy, engaged and well-supported workforce are better equipped to do their best work and, more importantly, enjoy their lives inside and outside the workplace. Thats why we are committed to providing an environment with your development and ...
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Our client is seeking a contract Threat Detection Engineer to support the ongoing delivery of detection engineering activities within a busy SOC environment. This role is centred on hands-on engineering and execution, ensuring detection content, automations, and integrations are delivered effectively and aligned to operational priorities. Working closely with threat hunting and SOC teams, you will translate detection requirements into practical outcomes, contributing directly to sprint-based delivery and continuous service improvement. This is a highly technical role suited to someone who enjoys building, tuning, and optimising detection capabilities across modern security platforms. Key Responsibilities * Develop and deliver detection content in line with sprint priorities and operational requirements
Our client is seeking a contract Threat Detection Engineer to support the ongoing delivery of detection engineering activities within a busy SOC environment. This role is centred on hands-on engineering and execution, ensuring detection content, automations, and integrations are delivered effectively and aligned to operational priorities. Working closely with threat hunting and SOC teams, you will translate detection requirements into practical outcomes, contributing directly to sprint-based delivery and continuous service improvement. This is a highly technical role suited to someone who enjoys building, tuning, and optimising detection capabilities across modern security platforms. Key Responsibilities * Develop and deliver detection content in line with sprint priorities and operational requirements
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Head of Quality Engineering
Head of Quality Engineering
Infoplus Technologies UK Ltd
City of London (EC3M)
From £650 to £700 per day
API Automation (REST Assured, Karate, Postman)
API Automation (REST Assured, Karate, Postman)
With over 300 million downloads and processing 5+ billion images annually, we serve both individual creators and major enterprises like Amazon, DoorDash, and Decathlon through our B2C app and B2B API solutions. * Role: Senior API Engineer (Fast API/Python) Our Image Editing API enables anyone to easily create high-quality images with a variety of AI-powered features including background removal, AI shadows, AI backgrounds * You will collaborate with your team to prioritize and implement the most impactful features for the API. * You will get fast feedback from API users and will iterate quickly (we update the API several times a week). You will follow the usage of the API and make decisions based on that. * The API is growing fast and sits at the intersection of developer experience and state-of-the-art AI image models.
With over 300 million downloads and processing 5+ billion images annually, we serve both individual creators and major enterprises like Amazon, DoorDash, and Decathlon through our B2C app and B2B API solutions. * Role: Senior API Engineer (Fast API/Python) Our Image Editing API enables anyone to easily create high-quality images with a variety of AI-powered features including background removal, AI shadows, AI backgrounds * You will collaborate with your team to prioritize and implement the most impactful features for the API. * You will get fast feedback from API users and will iterate quickly (we update the API several times a week). You will follow the usage of the API and make decisions based on that. * The API is growing fast and sits at the intersection of developer experience and state-of-the-art AI image models.
Proficient in REST API design and can create endpoints that scale and maintain over time.
Proficient in REST API design and can create endpoints that scale and maintain over time.
Own the integration lifecycle: technical scoping, data flow definition, API setup, configuration, troubleshooting, and delivery.
Own the integration lifecycle: technical scoping, data flow definition, API setup, configuration, troubleshooting, and delivery.
API integrations (including third-party platforms)
API integrations (including third-party platforms)
Design and build Automation from scratch, Web Services/API , Performance & Accessibility test frameworks with DevOps CI/CD * API testing with Rest Assured or Postman
Design and build Automation from scratch, Web Services/API , Performance & Accessibility test frameworks with DevOps CI/CD * API testing with Rest Assured or Postman
We deliver the industrys most advanced platform for Any API, Any Event, and Any AI Agent , trusted by global leaders like Michelin, Roche, and Blue Yonder. * The Mission : We are the first to bridge traditional API Management with the new frontier of AI Agent Security - As an Engineering Manage r , you will lead engineering teams building the next generation of API infrastructure. * Experience and understanding of architecture principles across infrastructure platforms, API, security, data, integration, and application layers
We deliver the industrys most advanced platform for Any API, Any Event, and Any AI Agent , trusted by global leaders like Michelin, Roche, and Blue Yonder. * The Mission : We are the first to bridge traditional API Management with the new frontier of AI Agent Security - As an Engineering Manage r , you will lead engineering teams building the next generation of API infrastructure. * Experience and understanding of architecture principles across infrastructure platforms, API, security, data, integration, and application layers
Big banks and enterprises use our API, which means our search and validation engines need to be lightning-fast and bulletproof, even when our biggest partners turn on the tap.
Big banks and enterprises use our API, which means our search and validation engines need to be lightning-fast and bulletproof, even when our biggest partners turn on the tap.
Understanding of scripting, backend development, and API integration at scale.
Understanding of scripting, backend development, and API integration at scale.
Track record building API- and integration-heavy systems in production environments.
Track record building API- and integration-heavy systems in production environments.
Strong knowledge of data architecture and API-based services. o Experience with REST APIs and understanding of API integration patterns
Strong knowledge of data architecture and API-based services. o Experience with REST APIs and understanding of API integration patterns
Technical working knowledge of API integrations (REST & SOAP).
Technical working knowledge of API integrations (REST & SOAP).
Knowledge of Protocol Buffers schema evolution and API versioning strategies
Knowledge of Protocol Buffers schema evolution and API versioning strategies
We deliver the industrys most advanced platform for Any API, Any Event, and Any AI Agent , trusted by global leaders like Michelin, Roche, and Blue Yonder. * The Mission : We are the first to bridge traditional API Management with the new frontier of AI Agent Security
We deliver the industrys most advanced platform for Any API, Any Event, and Any AI Agent , trusted by global leaders like Michelin, Roche, and Blue Yonder. * The Mission : We are the first to bridge traditional API Management with the new frontier of AI Agent Security
Create API-first integration layers for internal teams and external partners * Design and evolve an API-first integration platform enabling internal teams and external partners to build and integrate services efficiently
Create API-first integration layers for internal teams and external partners * Design and evolve an API-first integration platform enabling internal teams and external partners to build and integrate services efficiently
Experience designing, implementing, and maintaining automated test solutions across UI, API and integration layers.
Experience designing, implementing, and maintaining automated test solutions across UI, API and integration layers.
Experience with using Postman or other API platform UI tools a plus
Experience with using Postman or other API platform UI tools a plus
Full-Stack Delivery: Deploy production-grade features across the platform, including real-time monitoring dashboards, policy enforcement engines, API integrations, and the agent orchestration layers. * Take-Home or Pair Session (23 hours): A practical exercise involving the construction of a small agentic workflow using Claudes API.
Full-Stack Delivery: Deploy production-grade features across the platform, including real-time monitoring dashboards, policy enforcement engines, API integrations, and the agent orchestration layers. * Take-Home or Pair Session (23 hours): A practical exercise involving the construction of a small agentic workflow using Claudes API.
Assistant Vice President, Cloud Engineer - AI Engineer
Assistant Vice President, Cloud Engineer - AI Engineer
MUFG Bank Ltd
City of London, London
Competitive
Experience with Azure API Management or similar API gateways. * API Development & Integration * REST API development and integration * API Management / API Gateway patterns
Experience with Azure API Management or similar API gateways. * API Development & Integration * REST API development and integration * API Management / API Gateway patterns
GraphQL for API ingress
GraphQL for API ingress
You write and review production-grade Python and SQL, and have strong command of REST API design and integrations.
You write and review production-grade Python and SQL, and have strong command of REST API design and integrations.