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12 Contract API jobs in Cambridgeshire + 10 miles
Hands-on experience with Lambda, DynamoDB, S3, API Gateway, CloudWatch
Hands-on experience with Lambda, DynamoDB, S3, API Gateway, CloudWatch
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Draft new API extensions and write specifications.- Prototype interface changes and proposals. * Hands-on experience with one or more of the following API's: Vulkan, OpenGL ES, Metal, DirectX11 or DirectX12.
Draft new API extensions and write specifications.- Prototype interface changes and proposals. * Hands-on experience with one or more of the following API's: Vulkan, OpenGL ES, Metal, DirectX11 or DirectX12.
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Oversee test automation (UI, API, and protocol-level testing) using Automation tools.
Oversee test automation (UI, API, and protocol-level testing) using Automation tools.
What is the project about? We're embarking on an exciting digital transformation initiative focused on enhancing the customer experience through the development of a brand-new Weather App module. This module will deliver real-time, destination-specific weather insights to holidaymakers, while also supporting rapid experimentation and validation of new product ideas through proof-of-concepts (POCs). What will I be doing? As a Senior React Developer, you'll play a pivotal role in the end-to-end delivery of this greenfield app. * Lead the selection and implementation of a modern React-based technology stack. * Familiar/experienced with Sitecore Headless/Edge/JSS * Build the MVP of the Weather App from the ground up. * Collaborate closely with engineering leads to shape architecture and best practices. * Define and implement QA, automated testing, and CI/CD practices.
What is the project about? We're embarking on an exciting digital transformation initiative focused on enhancing the customer experience through the development of a brand-new Weather App module. This module will deliver real-time, destination-specific weather insights to holidaymakers, while also supporting rapid experimentation and validation of new product ideas through proof-of-concepts (POCs). What will I be doing? As a Senior React Developer, you'll play a pivotal role in the end-to-end delivery of this greenfield app. * Lead the selection and implementation of a modern React-based technology stack. * Familiar/experienced with Sitecore Headless/Edge/JSS * Build the MVP of the Weather App from the ground up. * Collaborate closely with engineering leads to shape architecture and best practices. * Define and implement QA, automated testing, and CI/CD practices.
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Microsoft Security (Sentinel) Automation & Detection Engineer
Microsoft Security (Sentinel) Automation & Detection Engineer
Hays Talent Solutions
Cambridge, Cambridgeshire
£500 - £800 per day + Competitive Day Rate
A multinational semiconductor and software design company seeks a Microsoft Security (Sentinel) Automation & Detection Engineer for a 6-month contract to start ASAP, based in Cambridge (Hybrid), Inside IR35 - Utilising knowledge of security operations, incident response, and detection engineering, you will be responsible for the delivery of Microsoft SIEM detections and security automations. The successful candidate will be proficient in automation and orchestration tools (e.g., SOAR platforms, scripting languages like Python, PowerShell, KQL) and have experience with integrating security tools (e.g., SIEM, EDR, firewalls) APIs, and Case Management tools for data enrichment. Key Skills and Experience - Experience contributing to large-scale, sprint-based, security automation and detection engineering projects in a SOC/ Cyber Defense or similar environment
A multinational semiconductor and software design company seeks a Microsoft Security (Sentinel) Automation & Detection Engineer for a 6-month contract to start ASAP, based in Cambridge (Hybrid), Inside IR35 - Utilising knowledge of security operations, incident response, and detection engineering, you will be responsible for the delivery of Microsoft SIEM detections and security automations. The successful candidate will be proficient in automation and orchestration tools (e.g., SOAR platforms, scripting languages like Python, PowerShell, KQL) and have experience with integrating security tools (e.g., SIEM, EDR, firewalls) APIs, and Case Management tools for data enrichment. Key Skills and Experience - Experience contributing to large-scale, sprint-based, security automation and detection engineering projects in a SOC/ Cyber Defense or similar environment
FEATURED
Just Recruitment is working with a growing, well established and market leading organisation, based on the outskirts of Colchester - they are looking to add a Wordpress/React Developer to their existing team, on a 12 month fixed term contract basis. The key purpose of the role is to assist with new projects, as well as working on the maintenance and development of existing projects. You will work closely with the wider business team on all projects. You must have the ability to accurately code design layouts. The end result should be pixel-perfect, accessible, responsive, secure, and performant. As a WordPress developer, you will be expected to develop WordPress sites using our internal starter theme. Knowledge in creating WordPress based websites. Exposure to server-side JavaScript, APIs - Proficiency in modern JavaScript features (ES6+) Strong Experience in HTML and
Just Recruitment is working with a growing, well established and market leading organisation, based on the outskirts of Colchester - they are looking to add a Wordpress/React Developer to their existing team, on a 12 month fixed term contract basis. The key purpose of the role is to assist with new projects, as well as working on the maintenance and development of existing projects. You will work closely with the wider business team on all projects. You must have the ability to accurately code design layouts. The end result should be pixel-perfect, accessible, responsive, secure, and performant. As a WordPress developer, you will be expected to develop WordPress sites using our internal starter theme. Knowledge in creating WordPress based websites. Exposure to server-side JavaScript, APIs - Proficiency in modern JavaScript features (ES6+) Strong Experience in HTML and
We are a Global Recruitment specialist that provides support to the clients across EMEA, APAC, US and Canada. We have an excellent job opportunity for you. Job Title: Python Developer - Location: Milton Keynes (2 days from the office) Duration: End of December 2025 - Pay-rate: £286 per day Inside IR35 - Proven experience as a Python Developer or similar role. Proficiency in Python frameworks (Django, Flask, FastAPI, etc.). Experience with RESTful APIs and microservices architecture. Knowledge of databases (PostgreSQL, MySQL, MongoDB, etc.). Understanding of asynchronous programming and multi-threading. Familiarity with version control systems (Git, GitHub, GitLab). Experience with cloud platforms (AWS, GCP, or Azure) is a plus. Strong problem-solving skills and attention to detail. Excellent teamwork and communication skills.
We are a Global Recruitment specialist that provides support to the clients across EMEA, APAC, US and Canada. We have an excellent job opportunity for you. Job Title: Python Developer - Location: Milton Keynes (2 days from the office) Duration: End of December 2025 - Pay-rate: £286 per day Inside IR35 - Proven experience as a Python Developer or similar role. Proficiency in Python frameworks (Django, Flask, FastAPI, etc.). Experience with RESTful APIs and microservices architecture. Knowledge of databases (PostgreSQL, MySQL, MongoDB, etc.). Understanding of asynchronous programming and multi-threading. Familiarity with version control systems (Git, GitHub, GitLab). Experience with cloud platforms (AWS, GCP, or Azure) is a plus. Strong problem-solving skills and attention to detail. Excellent teamwork and communication skills.
Design, develop, and maintain desktop applications (Python-based/QT/QML) to control and automate hardware test setups leveraging REST API.
Design, develop, and maintain desktop applications (Python-based/QT/QML) to control and automate hardware test setups leveraging REST API.
Software embedded in HSMs, client-side tools, API libraries - Full-stack development: embedded code & drivers, to client-side tools & API libraries.
Software embedded in HSMs, client-side tools, API libraries - Full-stack development: embedded code & drivers, to client-side tools & API libraries.
Experience producing API documentation.
Experience producing API documentation.
London - Hybrid - Remarkable - Our Culture - Remarkable company culture is centered around being "remarkable," with a strong emphasis on innovation, continuous learning, and a deep sense of purpose. Employees are encouraged to be adventurous, open-minded, and driven by passion and determination. The group places a significant focus on personal development and professional growth, offering opportunities for ongoing training and skills enhancement. We foster a collaborative environment where diversity, equity, and inclusivity are actively championed. The company promotes flexible working, sustainability, and social responsibility, ensuring that its operations leave a positive impact on both the environment and the communities it serves! At Remarkable , we help ambitious organisations transform their digital experiences crafting data-driven, customer-first solutions that
London - Hybrid - Remarkable - Our Culture - Remarkable company culture is centered around being "remarkable," with a strong emphasis on innovation, continuous learning, and a deep sense of purpose. Employees are encouraged to be adventurous, open-minded, and driven by passion and determination. The group places a significant focus on personal development and professional growth, offering opportunities for ongoing training and skills enhancement. We foster a collaborative environment where diversity, equity, and inclusivity are actively championed. The company promotes flexible working, sustainability, and social responsibility, ensuring that its operations leave a positive impact on both the environment and the communities it serves! At Remarkable , we help ambitious organisations transform their digital experiences crafting data-driven, customer-first solutions that
Experience in API development and integrating ML models with backend systems.?
Experience in API development and integrating ML models with backend systems.?
160 exact matches jobs are outside your preferred location
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Experience implementing REST APIs (knowledge in API security would be a plus), unit tests and using a test-driven development approach and associated testing tools
Experience implementing REST APIs (knowledge in API security would be a plus), unit tests and using a test-driven development approach and associated testing tools
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Senior Test Engineer – AWS Node Testing – Accounts
Senior Test Engineer – AWS Node Testing – Accounts
Spyrosoft Ltd
London
FTC (full-time) + benefits + pension
API testing (RestAssured or similar) The successful applicant will have strong Playwright/JavaScript knowledge, strong experience of API testing, have written automated performance tests, be comfortable working with AWS services and experience using monitoring tools * be experienced with API testing (RestAssured and Java knowledge would be beneficial)
API testing (RestAssured or similar) The successful applicant will have strong Playwright/JavaScript knowledge, strong experience of API testing, have written automated performance tests, be comfortable working with AWS services and experience using monitoring tools * be experienced with API testing (RestAssured and Java knowledge would be beneficial)
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Automation Engineer - Banking
Automation Engineer - Banking
Essential Consulting
EC1, City of London
Unspecified Competitive Daily Rate (inside IR35)
Experience of converting vendor API's into useable/easy to consume offerings delivered via a third party platform
Experience of converting vendor API's into useable/easy to consume offerings delivered via a third party platform
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Up to £600 per day Outside IR35 - London (Hybrid) The Role - As a Product Owner with a specialist focus on data mapping, you’ll be at the heart of enabling robust, scalable, and intelligent data flows across our internal systems. You'll define and deliver product capabilities that ensure seamless data flow between systems, APIs, and third-party platforms, driving clarity, consistency, and business value across our data landscape. * Own the data mapping product area from vision to execution. * Translate business needs into detailed data mapping requirements and user stories. * Collaborate with engineering, data, and compliance teams to implement mappings across internal systems. * Ensure data accuracy, consistency, and traceability across the platform. * Maintain documentation and support agile delivery practices.
Up to £600 per day Outside IR35 - London (Hybrid) The Role - As a Product Owner with a specialist focus on data mapping, you’ll be at the heart of enabling robust, scalable, and intelligent data flows across our internal systems. You'll define and deliver product capabilities that ensure seamless data flow between systems, APIs, and third-party platforms, driving clarity, consistency, and business value across our data landscape. * Own the data mapping product area from vision to execution. * Translate business needs into detailed data mapping requirements and user stories. * Collaborate with engineering, data, and compliance teams to implement mappings across internal systems. * Ensure data accuracy, consistency, and traceability across the platform. * Maintain documentation and support agile delivery practices.
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You will be working on a standard API layer wrapping 3rd party services (i.e Intercom and Gong) specifically to standardise the interface for cadencing/marketing/enrolment/email sequencing.
You will be working on a standard API layer wrapping 3rd party services (i.e Intercom and Gong) specifically to standardise the interface for cadencing/marketing/enrolment/email sequencing.
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Role Title: Appian Developer - Location: London - Duration: 30/11/2025 - Via Umbrella Company - We are seeking a skilled and motivated Appian Developer to join our dynamic team. The ideal candidate will be responsible for designing, developing, and implementing business process management (BPM) solutions using the Appian platform. You will work closely with business analysts, stakeholders, and other developers to deliver scalable and efficient applications that meet business requirements. Design and develop BPM applications using Appian. Collaborate with cross-functional teams to gather and analyse requirements. Build and maintain Appian objects such as records, reports, interfaces, and process models. Integrate Appian applications with external systems using APIs and web services. Participate in code reviews, testing, and deployment activities.
Role Title: Appian Developer - Location: London - Duration: 30/11/2025 - Via Umbrella Company - We are seeking a skilled and motivated Appian Developer to join our dynamic team. The ideal candidate will be responsible for designing, developing, and implementing business process management (BPM) solutions using the Appian platform. You will work closely with business analysts, stakeholders, and other developers to deliver scalable and efficient applications that meet business requirements. Design and develop BPM applications using Appian. Collaborate with cross-functional teams to gather and analyse requirements. Build and maintain Appian objects such as records, reports, interfaces, and process models. Integrate Appian applications with external systems using APIs and web services. Participate in code reviews, testing, and deployment activities.
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Hybrid - 2 Days a Week London We're looking for a Software Engineer with strong skills in Node.js, React, and TypeScript to build scalable web applications. You'll work across the stack, using Docker, Azure Web Apps, and ElasticSearch. Develop full-stack applications with Node.js, React, and TypeScript Build and maintain RESTful APIs and responsive UIs Containerize and deploy apps using Docker and Azure Web Apps Implement and optimize search with ElasticSearch Collaborate with product and DevOps teams Write clean, testable code and participate in code reviews Solid experience with Node.js, React, and TypeScript Familiarity with Docker, Azure Web Apps, and ElasticSearch Good understanding of REST APIs and modern frontend tools Comfortable with Git workflows and agile development Strong communication and problem-solving skills
Hybrid - 2 Days a Week London We're looking for a Software Engineer with strong skills in Node.js, React, and TypeScript to build scalable web applications. You'll work across the stack, using Docker, Azure Web Apps, and ElasticSearch. Develop full-stack applications with Node.js, React, and TypeScript Build and maintain RESTful APIs and responsive UIs Containerize and deploy apps using Docker and Azure Web Apps Implement and optimize search with ElasticSearch Collaborate with product and DevOps teams Write clean, testable code and participate in code reviews Solid experience with Node.js, React, and TypeScript Familiarity with Docker, Azure Web Apps, and ElasticSearch Good understanding of REST APIs and modern frontend tools Comfortable with Git workflows and agile development Strong communication and problem-solving skills
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Head Of Infrastructure Architecture
Head Of Infrastructure Architecture
Magnus Partners Talent Solutions
London
Competitive day rate (or equivalent)
About the Company - A dynamic London-based fintech startup is revolutionising financial services through cutting-edge technology. Their mission is to deliver secure, scalable, and innovative solutions that empower users in a rapidly evolving digital landscape. Join a forward-thinking team to build a next-generation platform that redefines how financial systems operate, driven by innovation, collaboration, and excellence. Role Overview - As the Technical Lead for Infrastructure & Architecture, youll spearhead the development of a transformative financial platform, reporting directly to the CEO. Leading a compact team of two developers, youll design and deliver a robust, secure architecture that sets new industry standards. This hands-on role demands deep expertise in full-stack development, blockchain technologies, and a relentless drive to innovate.
About the Company - A dynamic London-based fintech startup is revolutionising financial services through cutting-edge technology. Their mission is to deliver secure, scalable, and innovative solutions that empower users in a rapidly evolving digital landscape. Join a forward-thinking team to build a next-generation platform that redefines how financial systems operate, driven by innovation, collaboration, and excellence. Role Overview - As the Technical Lead for Infrastructure & Architecture, youll spearhead the development of a transformative financial platform, reporting directly to the CEO. Leading a compact team of two developers, youll design and deliver a robust, secure architecture that sets new industry standards. This hands-on role demands deep expertise in full-stack development, blockchain technologies, and a relentless drive to innovate.
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Role: Cyber Security Engineer - Salary/Rate: up to £700 per day (inside IR35) Location: Hybrid London - Contract Duration: until October 2025 - We are currently looking for a Cyber Security Engineer for our government client. This Cyber Security Engineer role is hybrid, based between 2-3 days per week on site in central London and the remainder of the week working remotely. The contract for the Cyber Security Engineer position is until October 2025 with potential to extend, operating inside IR35. Security Clearance: Security Check ('SC Clearance') This role is inside IR35 - Due to the service of the role, it will now be based on an Umbrella solution. * Experience penetration testing, ethical hacking, or completing vulnerability assessments. * Security testing tools (e.g., Burp Suite, OWASP ZAP, Nikto, Nmap, Metasploit, etc.).
Role: Cyber Security Engineer - Salary/Rate: up to £700 per day (inside IR35) Location: Hybrid London - Contract Duration: until October 2025 - We are currently looking for a Cyber Security Engineer for our government client. This Cyber Security Engineer role is hybrid, based between 2-3 days per week on site in central London and the remainder of the week working remotely. The contract for the Cyber Security Engineer position is until October 2025 with potential to extend, operating inside IR35. Security Clearance: Security Check ('SC Clearance') This role is inside IR35 - Due to the service of the role, it will now be based on an Umbrella solution. * Experience penetration testing, ethical hacking, or completing vulnerability assessments. * Security testing tools (e.g., Burp Suite, OWASP ZAP, Nikto, Nmap, Metasploit, etc.).
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Job Title: D365 CE Developer (Contract) Location: Central London (Hybrid – 3 days onsite per week) Contract Duration: 3 Months - Outside IR35 - We are seeking an experienced Dynamics 365 Customer Engagement (CE) Developer for a 3-month contract. The ideal candidate will have strong experience in data migration and system integration within the D365 CE environment. This hybrid role requires 3 days per week onsite in Central London. * Develop and customise solutions in Dynamics 365 CE * Lead and support data migration activities * Integrate D365 CE with external systems using APIs and middleware * Collaborate with business and technical teams to ensure seamless delivery * Proven experience as a D365 CE Developer * Strong skills in data migration and integration * Hands-on experience with Power Platform, JavaScript, plug-ins, and workflows
Job Title: D365 CE Developer (Contract) Location: Central London (Hybrid – 3 days onsite per week) Contract Duration: 3 Months - Outside IR35 - We are seeking an experienced Dynamics 365 Customer Engagement (CE) Developer for a 3-month contract. The ideal candidate will have strong experience in data migration and system integration within the D365 CE environment. This hybrid role requires 3 days per week onsite in Central London. * Develop and customise solutions in Dynamics 365 CE * Lead and support data migration activities * Integrate D365 CE with external systems using APIs and middleware * Collaborate with business and technical teams to ensure seamless delivery * Proven experience as a D365 CE Developer * Strong skills in data migration and integration * Hands-on experience with Power Platform, JavaScript, plug-ins, and workflows
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Automation Developer
Automation Developer
Networking People (UK) Limited
London
£550 - £600 per day + Deemed Inside IR35 via Umbrella solution
Contract: Automation Python Developer - Start Date: ASAP - Duration: 6 months - Location: Remote working (possible occasional travel to London site) Rate: £550 - 600 a day (Deemed Inside IR35 via umbrella solution) We are urgently seeking an experienced Automation Developer (With Python and Jinja2 expertise) to join a major financial services organisation on a business-critical infrastructure modernisation and automation programme. This is a fantastic opportunity to play a key role in delivering cutting-edge automation solutions within a dynamic and forward-thinking environment. * Assist with migrating multi-tenanted network services onto a new platform. * Drive improvements in the UAT process through automation. * Build automation capabilities for infrastructure testing. * Develop and enhance reusable infrastructure automation patterns to support a holistic automatio
Contract: Automation Python Developer - Start Date: ASAP - Duration: 6 months - Location: Remote working (possible occasional travel to London site) Rate: £550 - 600 a day (Deemed Inside IR35 via umbrella solution) We are urgently seeking an experienced Automation Developer (With Python and Jinja2 expertise) to join a major financial services organisation on a business-critical infrastructure modernisation and automation programme. This is a fantastic opportunity to play a key role in delivering cutting-edge automation solutions within a dynamic and forward-thinking environment. * Assist with migrating multi-tenanted network services onto a new platform. * Drive improvements in the UAT process through automation. * Build automation capabilities for infrastructure testing. * Develop and enhance reusable infrastructure automation patterns to support a holistic automatio
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.Net Developer - GDS, OOAD, .Net Core, RESTful
.Net Developer - GDS, OOAD, .Net Core, RESTful
Hays Technology
London
£400.0 - £420.0 per annum + Up to £420pd (Outside IR35)
Strong knowledge and working use of .Net Core and RESTful web services (API).
Strong knowledge and working use of .Net Core and RESTful web services (API).
FEATURED
We are looking for a candidate that is used to working in a lean team and able to manage the API integration workstream.
We are looking for a candidate that is used to working in a lean team and able to manage the API integration workstream.
FEATUREDNEW
Related Jobs
Locations
- Cambridge
- Peterborough
- East Anglia
- Hertfordshire
- Bedfordshire
- Bedford
- Stevenage
- Northampton
- Northamptonshire
- Milton Keynes
- London
- Essex
- Norwich
- Manchester
- Colchester
- Ipswich
- Birmingham
- Leicestershire
- Lincolnshire
- Coventry
- Wolverhampton
- East Midlands
- Oxfordshire
- Leicester
- City of London
- Sunderland
- Oxford
- South East
- Scotland
- Reading
- Leeds
- Sheffield
- Newcastle Upon Tyne
- Basildon
- Chelmsford
- Glasgow
- Kent
- West Midlands
- Derby
- Nottingham
- Bristol
- Warrington
- Yorkshire
- Shropshire
- Midlands
- Derbyshire
- Watford
- North London