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14 Contract API jobs in Henley-On-Thames + 20 miles
189 exact matches jobs are outside your preferred location
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 of working with REST API
Experience of working with REST API
The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
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Our core technology is a proprietary suite of real-time indicators and predictive analytics available via web application, custom dashboards and API. * Understand the importance of design best practices, provide effective translation to code artifacts and implement appropriate integration approach for API/data layer.
Our core technology is a proprietary suite of real-time indicators and predictive analytics available via web application, custom dashboards and API. * Understand the importance of design best practices, provide effective translation to code artifacts and implement appropriate integration approach for API/data layer.
You possess a strong understanding of cloud computing, microservices, API design, and event-driven architectures.
You possess a strong understanding of cloud computing, microservices, API design, and event-driven architectures.
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Halian Technology are searching for an Interim API Integrations Specialist to join our client's forward-thinking technology team. * Design, develop, and maintain API integrations between internal systems and external SaaS platforms. * Build and maintain API documentation, providing guidance on integration best practices. * Familiarity with RESTful API design, OAuth2/API authentication, and workflow automation (Power Automate). * Familiarity with Power Apps, Power BI, Microsoft Graph API, Azure Logic Apps/Functions, and Dataverse. Apply now and help energise the future with your expertise in API integration.
Halian Technology are searching for an Interim API Integrations Specialist to join our client's forward-thinking technology team. * Design, develop, and maintain API integrations between internal systems and external SaaS platforms. * Build and maintain API documentation, providing guidance on integration best practices. * Familiarity with RESTful API design, OAuth2/API authentication, and workflow automation (Power Automate). * Familiarity with Power Apps, Power BI, Microsoft Graph API, Azure Logic Apps/Functions, and Dataverse. Apply now and help energise the future with your expertise in API integration.
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Experience with Akamai Edge solutions for OT/cloud API protection.
Experience with Akamai Edge solutions for OT/cloud API protection.
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Contract Role: Prompt Engineer (Salesforce & Generative AI Integration) Duration: 4–5 months (November – March) Hourly Rate: £54.60 - £60/hour inside IR35 - Location: Fully Remote (UK-based candidates only) Overview - We are seeking a highly skilled Prompt Engineer with deep expertise in the Salesforce platform and hands-on experience in Generative AI integration. This role bridges the gap between business requirements and intelligent automation, crafting high-impact prompts and embedding AI capabilities into Salesforce workflows to enhance customer experience and operational efficiency. Key Responsibilities - Salesforce Platform Expertise * Design and configure Salesforce objects, data models, and automation using Flows, Apex, and Lightning Web Components (LWC). * Leverage Service Cloud and Sales Cloud functionality to support AI-driven use cases.
Contract Role: Prompt Engineer (Salesforce & Generative AI Integration) Duration: 4–5 months (November – March) Hourly Rate: £54.60 - £60/hour inside IR35 - Location: Fully Remote (UK-based candidates only) Overview - We are seeking a highly skilled Prompt Engineer with deep expertise in the Salesforce platform and hands-on experience in Generative AI integration. This role bridges the gap between business requirements and intelligent automation, crafting high-impact prompts and embedding AI capabilities into Salesforce workflows to enhance customer experience and operational efficiency. Key Responsibilities - Salesforce Platform Expertise * Design and configure Salesforce objects, data models, and automation using Flows, Apex, and Lightning Web Components (LWC). * Leverage Service Cloud and Sales Cloud functionality to support AI-driven use cases.
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Cybersecurity Incident Response Specialist - CONTRACT OPPORTUNITY * Remote with occasional trips to London (not expensed). * £750.00 per day. * 6 months. * ASAP start, ASAP interviews. * Right to work in the UK mandatory. The Cybersecurity Incident Response Specialist will be responsible for investigating, analysing and providing specialist expertise for the resolution of security incidents / attacks aimed at the client. Support the long-term strategic goals of Cyber Operations pillar support Senior Analysts and Analysts in managing incidents and liaise with SOC engineers to ensure appropriate security measures, technologies and processes are in place to avoid reoccurrence of incidents. * Demonstrate an ability to understand in detail how an incident has occurred without relying on alerts (e.g., reviewing logs and threat intelligence data).
Cybersecurity Incident Response Specialist - CONTRACT OPPORTUNITY * Remote with occasional trips to London (not expensed). * £750.00 per day. * 6 months. * ASAP start, ASAP interviews. * Right to work in the UK mandatory. The Cybersecurity Incident Response Specialist will be responsible for investigating, analysing and providing specialist expertise for the resolution of security incidents / attacks aimed at the client. Support the long-term strategic goals of Cyber Operations pillar support Senior Analysts and Analysts in managing incidents and liaise with SOC engineers to ensure appropriate security measures, technologies and processes are in place to avoid reoccurrence of incidents. * Demonstrate an ability to understand in detail how an incident has occurred without relying on alerts (e.g., reviewing logs and threat intelligence data).
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API testing (Postman, Rest-Assured).
API testing (Postman, Rest-Assured).
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Develop iOS applications (Swift or Objective-C) with RESTful API integrations.
Develop iOS applications (Swift or Objective-C) with RESTful API integrations.
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Collaborate closely with backend teams to evolve API contracts, caching and data-fetching strategies for resilient, scalable UX
Collaborate closely with backend teams to evolve API contracts, caching and data-fetching strategies for resilient, scalable UX
The Tyk API Management platform is helping to drive the connected world and power new products and services. Weve started by building an API Management platform. As a Mid-Level Full-Stack Engineer (React + Go) at Tyk, youll be responsible for designing and building compelling solutions for our Dashboard and API Gateway products. * Contribute to the direction of dashboard UI development and API functionality * Understanding of distributed systems design fundamentals and secure API design (REST and/or gRPC) * API management experience
The Tyk API Management platform is helping to drive the connected world and power new products and services. Weve started by building an API Management platform. As a Mid-Level Full-Stack Engineer (React + Go) at Tyk, youll be responsible for designing and building compelling solutions for our Dashboard and API Gateway products. * Contribute to the direction of dashboard UI development and API functionality * Understanding of distributed systems design fundamentals and secure API design (REST and/or gRPC) * API management experience
Experience working with API of varying types and integrating with backend data * Experience of developing any backend API frameworks
Experience working with API of varying types and integrating with backend data * Experience of developing any backend API frameworks
API Interaction: Familiarity with APIs, particularly in Python
API Interaction: Familiarity with APIs, particularly in Python
Work with back-end teams to align API integration and interface logic.
Work with back-end teams to align API integration and interface logic.
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Experience with front-end JS frameworks (ideally Vue.js 3 + Composition API)
Experience with front-end JS frameworks (ideally Vue.js 3 + Composition API)
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Experience interacting with a variety of API technologies, such as REST, JSON and XML * Experience working with AWS, using services such as ECS, S3 and API Gateway (Optional)
Experience interacting with a variety of API technologies, such as REST, JSON and XML * Experience working with AWS, using services such as ECS, S3 and API Gateway (Optional)
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Knowledge of API design principles, patterns (SOAP, REST), data formats (JSON, XML), and hands-on experience executing APIs through scripting.
Knowledge of API design principles, patterns (SOAP, REST), data formats (JSON, XML), and hands-on experience executing APIs through scripting.
Implement and optimize robust API integrations (REST and GraphQL) with backend systems. * Reliable delivery of API-driven features that meet product requirements. * Demonstrated experience building and maintaining API integrations (REST, GraphQL, or gRPC).
Implement and optimize robust API integrations (REST and GraphQL) with backend systems. * Reliable delivery of API-driven features that meet product requirements. * Demonstrated experience building and maintaining API integrations (REST, GraphQL, or gRPC).
Advanced understanding of good practice API development, integration, and testing (e.g. RESTful services, GraphQL). * Experience with both front-end (e.g. React, TypeScript) and back-end (.NET C#, ASP.NET) development, especially related to API consumption good practices such as schema validation, or event-driven architectures (e.g. webhooks).
Advanced understanding of good practice API development, integration, and testing (e.g. RESTful services, GraphQL). * Experience with both front-end (e.g. React, TypeScript) and back-end (.NET C#, ASP.NET) development, especially related to API consumption good practices such as schema validation, or event-driven architectures (e.g. webhooks).
Familiarity with application programming interfaces (API)
Familiarity with application programming interfaces (API)
Institutional User Experience (UX/API) This includes driving excellence across both the Web UI and API architecture, ensuring resilience, scalability, and ease of integration for institutional clients. * Proven ability to translate complex financial and security requirements into intuitive, compliance-aware user journeys for web platforms and B2B API integrations.
Institutional User Experience (UX/API) This includes driving excellence across both the Web UI and API architecture, ensuring resilience, scalability, and ease of integration for institutional clients. * Proven ability to translate complex financial and security requirements into intuitive, compliance-aware user journeys for web platforms and B2B API integrations.
We are looking for a skilled Java Tech Lead to design, develop, and lead implementation of scalable enterprise solutions. The ideal candidate will have strong hands-on expertise in Core Java , Spring Framework (Spring 11/17) , and Microservices architecture , along with solid understanding of CI/CD and deployment tools. * Lead development of Java-based microservices and REST APIs. * Design and implement scalable, maintainable solutions using OOPS principles. * Guide team members on coding best practices and solution design. * Oversee deployment pipelines using Jenkins, Terraform, or Ansible. * Collaborate with UI (Angular) and database teams for full-stack integration. * Ensure quality delivery through effective design and code reviews.
We are looking for a skilled Java Tech Lead to design, develop, and lead implementation of scalable enterprise solutions. The ideal candidate will have strong hands-on expertise in Core Java , Spring Framework (Spring 11/17) , and Microservices architecture , along with solid understanding of CI/CD and deployment tools. * Lead development of Java-based microservices and REST APIs. * Design and implement scalable, maintainable solutions using OOPS principles. * Guide team members on coding best practices and solution design. * Oversee deployment pipelines using Jenkins, Terraform, or Ansible. * Collaborate with UI (Angular) and database teams for full-stack integration. * Ensure quality delivery through effective design and code reviews.
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Please be aware although we are a remote organisation we do require candidates to reside in the UK. Location: Fully remote - Work pattern: Full time, 40 hours per week - Reporting to: CTO - About the Role - We are seeking a high-calibre Full-Stack Software Engineer to join our team at a scaling mental-health technology company. This role is ideal for an experienced engineer who excels at rapid, high-quality technical execution and is ready to take significant ownership of implementation and code quality. As a Full-Stack Software Engineer, you will be a core implementer across the entire application stack. You'll translate defined requirements and designs into robust, production-ready code, focusing on delivering features efficiently and maintaining world-class application performance. You will work within the engineering team to tackle challenging technical problems,
Please be aware although we are a remote organisation we do require candidates to reside in the UK. Location: Fully remote - Work pattern: Full time, 40 hours per week - Reporting to: CTO - About the Role - We are seeking a high-calibre Full-Stack Software Engineer to join our team at a scaling mental-health technology company. This role is ideal for an experienced engineer who excels at rapid, high-quality technical execution and is ready to take significant ownership of implementation and code quality. As a Full-Stack Software Engineer, you will be a core implementer across the entire application stack. You'll translate defined requirements and designs into robust, production-ready code, focusing on delivering features efficiently and maintaining world-class application performance. You will work within the engineering team to tackle challenging technical problems,
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