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154 Contract API jobs in South East + 20 miles
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Mobile Developer (Kotlin) - Essex - Do you dream in code and get a little too excited about clean architecture? If Kotlin is your happy place, we'd love to hear from you. * Building slick, intuitive apps that make users think 'wow, that just works.' * Designing and implementing new features with Kotlin and Android best practices. * Collaborating with designers, PMs, and fellow developers to turn ideas into apps people actually love to use. * Squashing bugs before they bug anyone else. * Keeping up to date with the latest Android & Kotlin Multiplatform (KMP) trends and bringing those fresh ideas to the table. * Solid Kotlin skills and experience building Android apps. * Familiarity with Android frameworks, Jetpack Compose, and RESTful APIs. * Bonus points if you've dipped into Kotlin Multiplatform (KMP). * A good handle on Git (because version control saves lives).
Mobile Developer (Kotlin) - Essex - Do you dream in code and get a little too excited about clean architecture? If Kotlin is your happy place, we'd love to hear from you. * Building slick, intuitive apps that make users think 'wow, that just works.' * Designing and implementing new features with Kotlin and Android best practices. * Collaborating with designers, PMs, and fellow developers to turn ideas into apps people actually love to use. * Squashing bugs before they bug anyone else. * Keeping up to date with the latest Android & Kotlin Multiplatform (KMP) trends and bringing those fresh ideas to the table. * Solid Kotlin skills and experience building Android apps. * Familiarity with Android frameworks, Jetpack Compose, and RESTful APIs. * Bonus points if you've dipped into Kotlin Multiplatform (KMP). * A good handle on Git (because version control saves lives).
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A World-Changing Company - Palantir builds the worlds leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role - As a Frontline Software Engineer at Palantir, you would begin your journey on a short-term assignment where you are embedded with customers. This unique experience lets you work directly with users, gaining firsthand insight into how our products are used and the challenges our customers face. Unlike traditional engineering roles, Frontline immerses you in complex, ambiguous problems, empowering you to deliver impactful solutions across some of the worlds most important industries and institutions.
A World-Changing Company - Palantir builds the worlds leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role - As a Frontline Software Engineer at Palantir, you would begin your journey on a short-term assignment where you are embedded with customers. This unique experience lets you work directly with users, gaining firsthand insight into how our products are used and the challenges our customers face. Unlike traditional engineering roles, Frontline immerses you in complex, ambiguous problems, empowering you to deliver impactful solutions across some of the worlds most important industries and institutions.
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A World-Changing Company - Palantir builds the worlds leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role - Backend Software Engineers at Palantir build software at scale to transform how organizations use data. Our Software Engineers are involved throughout the product lifecycle, from idea generation, design, prototyping, and production delivery. You will collaborate closely with technical and non-technical teammates to understand our customers' problems and build products that solve them. We encourage movement across teams to share context, skills, and experience, so you'll learn about many different technologies and aspects of each product.
A World-Changing Company - Palantir builds the worlds leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role - Backend Software Engineers at Palantir build software at scale to transform how organizations use data. Our Software Engineers are involved throughout the product lifecycle, from idea generation, design, prototyping, and production delivery. You will collaborate closely with technical and non-technical teammates to understand our customers' problems and build products that solve them. We encourage movement across teams to share context, skills, and experience, so you'll learn about many different technologies and aspects of each product.
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Overview - We are seeking an experienced PHP developer to join our development team. The role involves building and maintaining web applications that integrate with our core quote and sales engines. The successful candidate will have strong PHP and MySQL expertise, with the ability to write efficient, well-structured code without over-reliance on heavy frameworks. Key Responsibilities - Develop and maintain PHP applications that integrate with our back-end systems. Design and optimise MySQL databases, including complex queries and schema design for performance and scalability. Implement APIs for third-party website integration. Work across both back-end and front-end as needed (HTML, CSS, JavaScript). Ensure code quality, efficiency, and security best practices. Collaborate with team members to deliver reliable and maintainable solutions. Essential Skills & Experience
Overview - We are seeking an experienced PHP developer to join our development team. The role involves building and maintaining web applications that integrate with our core quote and sales engines. The successful candidate will have strong PHP and MySQL expertise, with the ability to write efficient, well-structured code without over-reliance on heavy frameworks. Key Responsibilities - Develop and maintain PHP applications that integrate with our back-end systems. Design and optimise MySQL databases, including complex queries and schema design for performance and scalability. Implement APIs for third-party website integration. Work across both back-end and front-end as needed (HTML, CSS, JavaScript). Ensure code quality, efficiency, and security best practices. Collaborate with team members to deliver reliable and maintainable solutions. Essential Skills & Experience
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Full Stack Software Engineer - AI Innovation
Full Stack Software Engineer - AI Innovation
Connexa
MK1, Milton Keynes
£60000 - £70000 per annum + 20% Bonus
Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
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Please note that relevant training, guidance, and advice will be given. This document lists the responsibilities you will encompass in your daily role. Company purpose statement: To use the best technology to better connect people. Company Profile - We are an award-winning technology services company based in Bedford. Established in 2006, we have an outstanding growth record, fantastic clients, and an excellent working environment. Committed to delivering high-touch Technology services to the property sector, specifically skyscrapers, our aim is to provide the highest levels of service coupled with a great working environment. Were hiring an experienced Smart Systems Manager to lead the delivery, integration, and optimisation of smart technologies across multiple client properties. You will act as the central point of contact for all things smartfrom IoT sensors and a
Please note that relevant training, guidance, and advice will be given. This document lists the responsibilities you will encompass in your daily role. Company purpose statement: To use the best technology to better connect people. Company Profile - We are an award-winning technology services company based in Bedford. Established in 2006, we have an outstanding growth record, fantastic clients, and an excellent working environment. Committed to delivering high-touch Technology services to the property sector, specifically skyscrapers, our aim is to provide the highest levels of service coupled with a great working environment. Were hiring an experienced Smart Systems Manager to lead the delivery, integration, and optimisation of smart technologies across multiple client properties. You will act as the central point of contact for all things smartfrom IoT sensors and a
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Full Stack Developer Node.Js / React
Full Stack Developer Node.Js / React
Halian Technology Limited
W1, Central London
From £60,000 to £65,000 per annum Plus bonus and benefits
My client specialises in digital payments across the UK and Europe. Their platform enables seamless real-time transactions for consumers and businesses, with a focus on security, scalability, and user experience. Backed by top-tier investors and used by thousands daily, were scaling up and looking for passionate engineers to help us build the future of payments. We are seeking a talented and driven Mid-Level Full Stack Engineer with strong skills in Node.js, React, and AWS cloud infrastructure. Youll play a key role in designing, developing, and maintaining scalable microservices and user interfaces for our core payments platform. Youll work in a cross-functional agile team alongside product managers, designers, and fellow engineers to deliver features that directly impact our customers and partners. * Develop backend microservices using Node.js (Express/Nest.js prefe
My client specialises in digital payments across the UK and Europe. Their platform enables seamless real-time transactions for consumers and businesses, with a focus on security, scalability, and user experience. Backed by top-tier investors and used by thousands daily, were scaling up and looking for passionate engineers to help us build the future of payments. We are seeking a talented and driven Mid-Level Full Stack Engineer with strong skills in Node.js, React, and AWS cloud infrastructure. Youll play a key role in designing, developing, and maintaining scalable microservices and user interfaces for our core payments platform. Youll work in a cross-functional agile team alongside product managers, designers, and fellow engineers to deliver features that directly impact our customers and partners. * Develop backend microservices using Node.js (Express/Nest.js prefe
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Job Title: Site Reliability Engineer - 12 Month Contract - No Sponsorship Available - Job Description - Our client are hiring a Site Reliability Engineering to join their Site Reliability Engineering group whose main objective is to ensure their services are consistently reliable for their customers. As part of adynamicand self-organizing team, you will have the opportunity to work with modern programming languages and manage software within public cloud environments. Our clients cross-functional teams cover the entire technology stack, from front ends to APIs and databases, providing the resources to build, deploy, and operate their own software. Responsibilities * Support applications in production, including responding to incidents and conducting post-incident reviews. * Apply observability engineering to proactively detect system degradation, understand system sta
Job Title: Site Reliability Engineer - 12 Month Contract - No Sponsorship Available - Job Description - Our client are hiring a Site Reliability Engineering to join their Site Reliability Engineering group whose main objective is to ensure their services are consistently reliable for their customers. As part of adynamicand self-organizing team, you will have the opportunity to work with modern programming languages and manage software within public cloud environments. Our clients cross-functional teams cover the entire technology stack, from front ends to APIs and databases, providing the resources to build, deploy, and operate their own software. Responsibilities * Support applications in production, including responding to incidents and conducting post-incident reviews. * Apply observability engineering to proactively detect system degradation, understand system sta
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Data Engineer - AI Projects
Data Engineer - AI Projects
Henderson Scott
Stevenage, Hertfordshire, SG1 2DA
£50000.00 - £55000.00 per annum + Bonus, + Substantial Benefits
Data Engineer - Generative AI Projects?? Hybrid | 2-3 Days On-Site | Up to £55,000 + Bonus + Package?? British Citizens Only | BPSS Clearance Required - We're hiring a Data Engineer with a passion for automation, clean pipelines, and the future of AI. This is your chance to shape how data powers Generative AI and NLP tools in a secure, high-tech organisation working on projects that matter. If you're keen to work on innovative internal use-cases - from AI assistants to intelligent search and document automation - this is the perfect next step. What You'll Be Doing * Building and maintaining data pipelines across structured & unstructured sources * Collaborating with internal teams to support Generative AI and NLP projects * Ensuring data is secure, compliant, high-quality, and easy to access * Bringing your ideas to the table as we explore new tools and technologies
Data Engineer - Generative AI Projects?? Hybrid | 2-3 Days On-Site | Up to £55,000 + Bonus + Package?? British Citizens Only | BPSS Clearance Required - We're hiring a Data Engineer with a passion for automation, clean pipelines, and the future of AI. This is your chance to shape how data powers Generative AI and NLP tools in a secure, high-tech organisation working on projects that matter. If you're keen to work on innovative internal use-cases - from AI assistants to intelligent search and document automation - this is the perfect next step. What You'll Be Doing * Building and maintaining data pipelines across structured & unstructured sources * Collaborating with internal teams to support Generative AI and NLP projects * Ensuring data is secure, compliant, high-quality, and easy to access * Bringing your ideas to the table as we explore new tools and technologies
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Senior Security Engineer Defender PurView Sentinel
Senior Security Engineer Defender PurView Sentinel
Invitise Ltd
EC1A, City of London
Up to £500 per day Outside IR35
PowerShell scripting and use of Microsoft Graph API
PowerShell scripting and use of Microsoft Graph API
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Hands-on experience integrating external data sources into internal systems using ETL pipelines and API-driven data exchange.
Hands-on experience integrating external data sources into internal systems using ETL pipelines and API-driven data exchange.
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Experience of deploying into and using AWS services including VPC, EC2, RDS, API Gateway
Experience of deploying into and using AWS services including VPC, EC2, RDS, API Gateway
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SharePoint REST API: Integration with SharePoint lists and libraries
SharePoint REST API: Integration with SharePoint lists and libraries
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Proficiency in API testing (Postman or equivalent) and SQL for data validation.
Proficiency in API testing (Postman or equivalent) and SQL for data validation.
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4+ years automation testing skills (Selenium, Katalon, GT-UI, GT-API). * Web services testing / API testing skills is a plus.
4+ years automation testing skills (Selenium, Katalon, GT-UI, GT-API). * Web services testing / API testing skills is a plus.
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AI (artificial intelligence) DevOps Engineer
AI (artificial intelligence) DevOps Engineer
Huxley Associates
EC1, City of London
£60000 - £90000 per annum
You'll also ensure alignment with enterprise-grade security practices, including zero trust principles, identity-aware routing, and integration with Azure API Management and Application Gateway. * API Gateway, Azure API Management (APIM), Azure Application Gateway
You'll also ensure alignment with enterprise-grade security practices, including zero trust principles, identity-aware routing, and integration with Azure API Management and Application Gateway. * API Gateway, Azure API Management (APIM), Azure Application Gateway
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Proficiency with Git workflows, LAMP stack, and REST API integrations.
Proficiency with Git workflows, LAMP stack, and REST API integrations.
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Experience with API design and development for both internal and external use cases
Experience with API design and development for both internal and external use cases
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Familiarity with testing tools/frameworks (e.g., JUnit, Postman) and API testing
Familiarity with testing tools/frameworks (e.g., JUnit, Postman) and API testing
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Understanding of secure architecture, API design, and performance optimisation.
Understanding of secure architecture, API design, and performance optimisation.
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Most functionality is written by the API or integrations team but we need a strong developer that can do both.
Most functionality is written by the API or integrations team but we need a strong developer that can do both.
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Work closely with the team to develop new features, such as better interpretation layers, enhanced data decoding, and improved API coverage for various blockchain data.
Work closely with the team to develop new features, such as better interpretation layers, enhanced data decoding, and improved API coverage for various blockchain data.
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As an emerging leader in the $10B+ communications API market, we empower global brands to connect better with their customers, employees, and partners through transformative communications experiences. For example, Vonage API solutions empower organizations to build their custom omnichannel communications structure. This role is critical to protecting our customers and their end users from increasingly sophisticated fraud schemes and prevent bad actors from using our services while maintaining seamless user experiences across all Vonage communication API channels including voice & messaging channels..
As an emerging leader in the $10B+ communications API market, we empower global brands to connect better with their customers, employees, and partners through transformative communications experiences. For example, Vonage API solutions empower organizations to build their custom omnichannel communications structure. This role is critical to protecting our customers and their end users from increasingly sophisticated fraud schemes and prevent bad actors from using our services while maintaining seamless user experiences across all Vonage communication API channels including voice & messaging channels..
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You may also be asked to support the testing of releases for our Client API and Mobile Application. * API testing - building out automated test coverage of our RESTful Client API * Collaborate with the external contractor QA resource on specific projects (e.g. automating API testing) and as an additional resource when required
You may also be asked to support the testing of releases for our Client API and Mobile Application. * API testing - building out automated test coverage of our RESTful Client API * Collaborate with the external contractor QA resource on specific projects (e.g. automating API testing) and as an additional resource when required
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Wallarm is the only solution that unifies best-in-class API Security and WAAP (Next-Gen WAF) capabilities to protect your entire API and web application portfolio in multi-cloud and cloud-native environments. * Recommend API security best practices, application architectures, platforms and application infrastructure required to successfully implement a complete API security solution based on Wallarm - Prior experience in API security, API management, SIEM, Software Development, DevOps, DevSecOps, or web application firewalls is preferred
Wallarm is the only solution that unifies best-in-class API Security and WAAP (Next-Gen WAF) capabilities to protect your entire API and web application portfolio in multi-cloud and cloud-native environments. * Recommend API security best practices, application architectures, platforms and application infrastructure required to successfully implement a complete API security solution based on Wallarm - Prior experience in API security, API management, SIEM, Software Development, DevOps, DevSecOps, or web application firewalls is preferred
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Locations
- London
- Surrey
- City of London
- Canary Wharf
- South East London
- Isleworth
- Tunbridge Wells
- Horsham
- Dartford
- Central London
- Birmingham
- Scotland
- Dundee
- Plymouth
- East Anglia
- Hampshire
- Reading
- Midlands
- Manchester
- Kent
- Wales
- West Sussex
- Derby
- East Midlands
- Yorkshire
- Slough
- Southampton
- Bristol
- Guildford
- Eastleigh
- Chester
- Milton Keynes
- Leicester
- Midlothian
- Portsmouth
- Brighton
- Livingston
- Lancashire
- Nottinghamshire
- Cambridgeshire
- Glasgow
- Bath
- Colchester
- Sheffield
- Nottingham
- Leeds
- North West
- Cambridge
- Exeter
- Cheltenham