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18 Contract API jobs in Buckinghamshire + 10 miles
178 exact matches jobs are outside your preferred location
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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).
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Experience with MuleSoft API management
Experience with MuleSoft API management
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API experience with Alteryx and Workday
API experience with Alteryx and Workday
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API experience with Alteryx and Workday
API experience with Alteryx and Workday
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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.
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A global Tech Company requires a Contract hands on Technical OneTrust SME to support the design, configuration, and integration of OneTrust’s Data Privacy Management suite—particularly focused on DSAR automation, API-based integrations, and data redaction workflows. * Set up API integrations between OneTrust and third-party systems such as Slack, Gmail, Microsoft 365, ServiceNow, or internal databases
A global Tech Company requires a Contract hands on Technical OneTrust SME to support the design, configuration, and integration of OneTrust’s Data Privacy Management suite—particularly focused on DSAR automation, API-based integrations, and data redaction workflows. * Set up API integrations between OneTrust and third-party systems such as Slack, Gmail, Microsoft 365, ServiceNow, or internal databases
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Are you passionate about building world-class API platforms that enable innovation at scale? A fast-growing FinTech is seeking a Platform Product Owner to shape the future of their API services – supporting both internal engineering teams and external partners. * Proven experience managing credit platforms/API product from a FinTech or financial sercvices business
Are you passionate about building world-class API platforms that enable innovation at scale? A fast-growing FinTech is seeking a Platform Product Owner to shape the future of their API services – supporting both internal engineering teams and external partners. * Proven experience managing credit platforms/API product from a FinTech or financial sercvices business
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Job Description Designing, developing, and testing integration solutions using the Mulesoft Anypoint Platform. This includes creating and managing APIs, working with various integration patterns, and collaborating with other teams to ensure seamless data flow and application connectivity.
Job Description Designing, developing, and testing integration solutions using the Mulesoft Anypoint Platform. This includes creating and managing APIs, working with various integration patterns, and collaborating with other teams to ensure seamless data flow and application connectivity.
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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.
Role:GIS Architect - Location & Travel : Newbury, UK(Visit required to VF office on frequent basis) Employment Type: Outside of IR35 - Duration:6 Months - Candidate Should be able to start immediately - Clearance: Should be SC cleared or Eligible - Prodapt is the largest & fastest growing specialized firm serving in Connectedness vertical. Present across 5 continents, delivering futuristic solutions & AI-driven services to global CSPs, and digital platform & software firms. Prodapts customers range from telecom operators, digital/multi-service providers (D/MSPs), technology and digital platform companies in the business of connectedness. Prodapt builds, integrates, and operates solutions enabling next-generation technologies and innovations. Role Overview - You will lead the architectural design and execution of GIS platform transitions, primarily focused on migration
Role:GIS Architect - Location & Travel : Newbury, UK(Visit required to VF office on frequent basis) Employment Type: Outside of IR35 - Duration:6 Months - Candidate Should be able to start immediately - Clearance: Should be SC cleared or Eligible - Prodapt is the largest & fastest growing specialized firm serving in Connectedness vertical. Present across 5 continents, delivering futuristic solutions & AI-driven services to global CSPs, and digital platform & software firms. Prodapts customers range from telecom operators, digital/multi-service providers (D/MSPs), technology and digital platform companies in the business of connectedness. Prodapt builds, integrates, and operates solutions enabling next-generation technologies and innovations. Role Overview - You will lead the architectural design and execution of GIS platform transitions, primarily focused on migration
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Role: Business Analyst with OSS KnowledgeNaap - Location: Newbury, UK (Visit required to VF office frequently) Employment Type: Outside IR35 - Duration: 6 months - Work Mode: Hybrid3 days - Candidate Should be able to start immediately - Clearance: Should be SC cleared or Eligible - Prodapt is the largest & fastest growing specialized firm serving in Connectedness vertical. Present across 5 continents, delivering futuristic solutions & AI-driven services to global CSPs, and digital platform & software firms. Prodapts customers range from telecom operators, digital/multi-service providers (D/MSPs), technology and digital platform companies in the business of connectedness. Prodapt builds, integrates, and operates solutions enabling next-generation technologies and innovations. Overview: We are looking for a skilled Business Analyst with strong domain expertise in OSS f
Role: Business Analyst with OSS KnowledgeNaap - Location: Newbury, UK (Visit required to VF office frequently) Employment Type: Outside IR35 - Duration: 6 months - Work Mode: Hybrid3 days - Candidate Should be able to start immediately - Clearance: Should be SC cleared or Eligible - Prodapt is the largest & fastest growing specialized firm serving in Connectedness vertical. Present across 5 continents, delivering futuristic solutions & AI-driven services to global CSPs, and digital platform & software firms. Prodapts customers range from telecom operators, digital/multi-service providers (D/MSPs), technology and digital platform companies in the business of connectedness. Prodapt builds, integrates, and operates solutions enabling next-generation technologies and innovations. Overview: We are looking for a skilled Business Analyst with strong domain expertise in OSS f
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Role:OSS Architect NaaP - Location: Newbury, UK (Visit required to VF office on a frequent basis) Employment Type: Outside IR35Duration: 6 monthsWork Mode: Hybrid 3Candidate Should be able to start immediately - Clearance: Should be SC cleared or Eligible - Prodapt is the largest & fastest growing specialized firm serving in Connectedness vertical. Present across 5 continents, delivering futuristic solutions & AI-driven services to global CSPs, and digital platform & software firms. Prodapts customers range from telecom operators, digital/multi-service providers (D/MSPs), technology and digital platform companies in the business of connectedness. Prodapt builds, integrates, and operates solutions enabling next-generation technologies and innovations. We are seeking an experienced OSS Architect to design and lead the implementation of OSS solutions supporting fixed and
Role:OSS Architect NaaP - Location: Newbury, UK (Visit required to VF office on a frequent basis) Employment Type: Outside IR35Duration: 6 monthsWork Mode: Hybrid 3Candidate Should be able to start immediately - Clearance: Should be SC cleared or Eligible - Prodapt is the largest & fastest growing specialized firm serving in Connectedness vertical. Present across 5 continents, delivering futuristic solutions & AI-driven services to global CSPs, and digital platform & software firms. Prodapts customers range from telecom operators, digital/multi-service providers (D/MSPs), technology and digital platform companies in the business of connectedness. Prodapt builds, integrates, and operates solutions enabling next-generation technologies and innovations. We are seeking an experienced OSS Architect to design and lead the implementation of OSS solutions supporting fixed and
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The ideal candidate will have hands-on experience with Playwright or Cypress and a solid understanding of API testing as well as a keen eye for detail. * API Tools: Java, Rest-assured, maven, JUnit, Allure * You can analyse, design and implement automated test cases for API endpoints to ensure that requirements are met, industry standards are upheld, and documentation is correct. * You have some experience designing, implementing and executing API performance and load tests. * We use gatling to drive our API tests and monitor key application metrics from these in addition to built-in response time reports.
The ideal candidate will have hands-on experience with Playwright or Cypress and a solid understanding of API testing as well as a keen eye for detail. * API Tools: Java, Rest-assured, maven, JUnit, Allure * You can analyse, design and implement automated test cases for API endpoints to ensure that requirements are met, industry standards are upheld, and documentation is correct. * You have some experience designing, implementing and executing API performance and load tests. * We use gatling to drive our API tests and monitor key application metrics from these in addition to built-in response time reports.
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The ideal candidate will have hands-on experience with Playwright or Cypress and a solid understanding of API testing as well as a keen eye for detail. * API Tools: Java, Rest-assured, maven, JUnit, Allure * You can analyse, design and implement automated test cases for API endpoints to ensure that requirements are met, industry standards are upheld, and documentation is correct. * You have some experience designing, implementing and executing API performance and load tests. * We use gatling to drive our API tests and monitor key application metrics from these in addition to built-in response time reports.
The ideal candidate will have hands-on experience with Playwright or Cypress and a solid understanding of API testing as well as a keen eye for detail. * API Tools: Java, Rest-assured, maven, JUnit, Allure * You can analyse, design and implement automated test cases for API endpoints to ensure that requirements are met, industry standards are upheld, and documentation is correct. * You have some experience designing, implementing and executing API performance and load tests. * We use gatling to drive our API tests and monitor key application metrics from these in addition to built-in response time reports.
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6 months - London - hybrid x2 day onsite x3 remote - Active SC cleared or eligible candidates will be considered - Inside ir35 - umbrella only - This is an ideal role for an architect who is looking for a new challenge to help implement data strategy across a complex programme which is at the heart of the core UK Brexit capability. The ideal candidate will be responsible for designing, implementing, and maintaining our Dynatrace-based monitoring and observability solution, ensuring optimal performance, scalability, and reliability of our enterprise applications and infrastructure. The candidate will be working in a multi-supplier team and will be responsible for leading team members. Essential skills and experience * Dynatrace is MANDATORY "Application Architect with experience of working in a distributed enterprise landscape.
6 months - London - hybrid x2 day onsite x3 remote - Active SC cleared or eligible candidates will be considered - Inside ir35 - umbrella only - This is an ideal role for an architect who is looking for a new challenge to help implement data strategy across a complex programme which is at the heart of the core UK Brexit capability. The ideal candidate will be responsible for designing, implementing, and maintaining our Dynatrace-based monitoring and observability solution, ensuring optimal performance, scalability, and reliability of our enterprise applications and infrastructure. The candidate will be working in a multi-supplier team and will be responsible for leading team members. Essential skills and experience * Dynatrace is MANDATORY "Application Architect with experience of working in a distributed enterprise landscape.
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Be aware they maybe needed onsite 2/3 days a week - London - This is an ideal role for an architect who is looking for a new challenge to help implement data strategy across a complex programme which is at the heart of the core UK Brexit capability. The ideal candidate will be responsible for designing, implementing, and maintaining our Dynatrace-based monitoring and observability solution, ensuring optimal performance, scalability, and reliability of our enterprise applications and infrastructure. The candidate will be working in a multi-supplier team and will be responsible for leading team members - Dynatrace is MANDATORY 'Application Architect with experience of working in a distributed enterprise landscape. Some experience of broad spectrum integration patterns, web services, xml, wsdl, json/REST, APIs, batch workloads.
Be aware they maybe needed onsite 2/3 days a week - London - This is an ideal role for an architect who is looking for a new challenge to help implement data strategy across a complex programme which is at the heart of the core UK Brexit capability. The ideal candidate will be responsible for designing, implementing, and maintaining our Dynatrace-based monitoring and observability solution, ensuring optimal performance, scalability, and reliability of our enterprise applications and infrastructure. The candidate will be working in a multi-supplier team and will be responsible for leading team members - Dynatrace is MANDATORY 'Application Architect with experience of working in a distributed enterprise landscape. Some experience of broad spectrum integration patterns, web services, xml, wsdl, json/REST, APIs, batch workloads.
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Agile Test Lead – SCADA Transformation Programme -Hybrid - Contract
Agile Test Lead – SCADA Transformation Programme -Hybrid - Contract
Queen Square Recruitment Limited
CV34, Warwick
Up to £450 per day
My client, a global consultancy leader , have an end client where a major UK infrastructureis undergoing a large-scale transformation of its Electricity Transmission SCADA platform, migrating from a legacy shared system to a modern OSI Aspentech/DGM-based solution. The new system will control ~350 substations, integrating thousands of sensors and assets, and is key to meeting digital efficiency and safety objectives. We're looking for an experiencedAgile Test Leadto ensure consistent, high-quality testing across multiple SCRUM teams throughout System Integration Testing (SIT) and other test phases delivered in both Agile and Waterfall methodologies. * Lead and coordinate SIT planning, preparation, and execution across 4 SCRUM teams * Promote and embed testing best practices and quality assurance standards
My client, a global consultancy leader , have an end client where a major UK infrastructureis undergoing a large-scale transformation of its Electricity Transmission SCADA platform, migrating from a legacy shared system to a modern OSI Aspentech/DGM-based solution. The new system will control ~350 substations, integrating thousands of sensors and assets, and is key to meeting digital efficiency and safety objectives. We're looking for an experiencedAgile Test Leadto ensure consistent, high-quality testing across multiple SCRUM teams throughout System Integration Testing (SIT) and other test phases delivered in both Agile and Waterfall methodologies. * Lead and coordinate SIT planning, preparation, and execution across 4 SCRUM teams * Promote and embed testing best practices and quality assurance standards
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API servers using REST (swagger, OpenAPI). REST API consumer models i.e.http request libraries
API servers using REST (swagger, OpenAPI). REST API consumer models i.e.http request libraries
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IT Application Owner – Salesforce Cloud, MuleSoft & Shield
IT Application Owner – Salesforce Cloud, MuleSoft & Shield
7P UK Ltd
W2, West London
From £500 to £550 per day
Define and maintainrobust API contractsto guarantee seamless, consistent, and stable integrations with other systems.
Define and maintainrobust API contractsto guarantee seamless, consistent, and stable integrations with other systems.
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IT Application Owner - Enterprise Application & Integration
IT Application Owner - Enterprise Application & Integration
7P UK Ltd
W2, West London
From £500 to £550 per day
Ensure robust API contracts that enable consistent and stable integrations with surrounding systems.
Ensure robust API contracts that enable consistent and stable integrations with surrounding systems.
FEATURED
My client is looking for a talentedMagento Developerwith strong backend experience to join their dynamic dev team. If you enjoy building custom ecommerce solutions, integrating complex systems, and collaborating in a supportive tech environment, this could be the role for you. This role is predominately remote, although the team meet up onsite once a month near Farringdon. There is no specific requirement to attend every month, however some flexibility would be beneficial. The Role - Youll be responsible for delivering tailored features and functionality across a variety of ecommerce projects. * Developing and maintaining bespoke Magento functionality. * Working with the development team to ensure new code aligns with the Magento framework and delivers great performance. * Reviewing code, pull requests, and supporting peer development.
My client is looking for a talentedMagento Developerwith strong backend experience to join their dynamic dev team. If you enjoy building custom ecommerce solutions, integrating complex systems, and collaborating in a supportive tech environment, this could be the role for you. This role is predominately remote, although the team meet up onsite once a month near Farringdon. There is no specific requirement to attend every month, however some flexibility would be beneficial. The Role - Youll be responsible for delivering tailored features and functionality across a variety of ecommerce projects. * Developing and maintaining bespoke Magento functionality. * Working with the development team to ensure new code aligns with the Magento framework and delivers great performance. * Reviewing code, pull requests, and supporting peer development.
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React Native Developer - Contract - Hybrid (Coventry, UK) £375/day Inside IR35 | 6 months | 3 days on-site - An exciting opportunity for a skilled React Native Developer to join a major retail transformation project. You'll develop scalable, high-performance mobile apps using React Native, Redux, and TypeScript, working closely with designers, product teams, and backend engineers to create seamless, engaging user experiences. * Strong expertise in React Native, Redux, Hooks, and TypeScript * Familiarity with cloud platforms (AWS/Azure) and CI/CD pipelines * Experience with GitHub, REST APIs, and automated testing tools * A collaborative mindset and excellent problem-solving skills * Join a fast-paced, innovation-driven environment * Work with cutting-edge mobile technologies on impactful projects * Collaborate with top-tier talent across disciplines
React Native Developer - Contract - Hybrid (Coventry, UK) £375/day Inside IR35 | 6 months | 3 days on-site - An exciting opportunity for a skilled React Native Developer to join a major retail transformation project. You'll develop scalable, high-performance mobile apps using React Native, Redux, and TypeScript, working closely with designers, product teams, and backend engineers to create seamless, engaging user experiences. * Strong expertise in React Native, Redux, Hooks, and TypeScript * Familiarity with cloud platforms (AWS/Azure) and CI/CD pipelines * Experience with GitHub, REST APIs, and automated testing tools * A collaborative mindset and excellent problem-solving skills * Join a fast-paced, innovation-driven environment * Work with cutting-edge mobile technologies on impactful projects * Collaborate with top-tier talent across disciplines
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Locations
- Milton Keynes
- High Wycombe
- Oxfordshire
- Bedfordshire
- Northamptonshire
- Northampton
- Bedford
- Luton
- Oxford
- Watford
- London
- Reading
- Slough
- Hertfordshire
- Berkshire
- Uxbridge
- Maidenhead
- South East
- Windsor
- Essex
- Cardiff
- West Yorkshire
- East Midlands
- Glasgow
- South Yorkshire
- Bristol
- Derby
- South East London
- Somerset
- Banbury
- North West London
- West London
- Birmingham
- Surrey
- City of London
- Sheffield
- Doncaster
- Wolverhampton
- Cambridgeshire
- Norwich
- North London
- Kettering
- Kent
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