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8 Contract API jobs in Northamptonshire + 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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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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Have deep knowledge on AWS technical stack- Lambda, DynamoDB, Kinesis, API gateway ,monitoring solutions like Cloud Watch and Xray
Have deep knowledge on AWS technical stack- Lambda, DynamoDB, Kinesis, API gateway ,monitoring solutions like Cloud Watch and Xray
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.
Accountable for delivering effective solution designs within the Open Banking COE, taking the lead on the solution design from an API design and API Security perspective * Design end-to-end API solutions to meet business needs within the context of a broader solution implementation * Define and derive best practices in the API space, adopting industry best practices and highlighting areas of improvements * Highly experienced solution architect in designing solutions for large-scale API integration projects and programmes within Banking/Payments domain. * Deep knowledge and experience in REST API design principles with experience in creation of Swagger/RAML definitions * Experience of API security profile standards - OAuth, OIDC and FAPI would be manda
Accountable for delivering effective solution designs within the Open Banking COE, taking the lead on the solution design from an API design and API Security perspective * Design end-to-end API solutions to meet business needs within the context of a broader solution implementation * Define and derive best practices in the API space, adopting industry best practices and highlighting areas of improvements * Highly experienced solution architect in designing solutions for large-scale API integration projects and programmes within Banking/Payments domain. * Deep knowledge and experience in REST API design principles with experience in creation of Swagger/RAML definitions * Experience of API security profile standards - OAuth, OIDC and FAPI would be manda
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.
Experience in API development and integrating ML models with backend systems.?
Experience in API development and integrating ML models with backend systems.?
141 exact matches jobs are outside your preferred location
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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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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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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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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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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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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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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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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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.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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Job title UK ETCS On-Board Compliance Engineer - Role Definition - This exciting role offers an opportunity to provide technical leadership and innovation within Siemens with regards to compliance in the context of an ETCS on-board retrofit project. Working as part of a close knit team, the Compliance Engineer shall be the referent on compliance for the UK specific application of a ETCS On-Board retrofit project. The Compliance Engineer will report to the Approvals Manager. The Design team and the System Engineering team defined which standards/laws/regulations the design must comply with, listed in the document called the Technical Baseline. This Technical Baseline is part of the requirement package that Siemens passes to each design house. Key Accountabilities •Check and challenge the evidence of compliance produced both internally (System Engineering, Design, Verif
Job title UK ETCS On-Board Compliance Engineer - Role Definition - This exciting role offers an opportunity to provide technical leadership and innovation within Siemens with regards to compliance in the context of an ETCS on-board retrofit project. Working as part of a close knit team, the Compliance Engineer shall be the referent on compliance for the UK specific application of a ETCS On-Board retrofit project. The Compliance Engineer will report to the Approvals Manager. The Design team and the System Engineering team defined which standards/laws/regulations the design must comply with, listed in the document called the Technical Baseline. This Technical Baseline is part of the requirement package that Siemens passes to each design house. Key Accountabilities •Check and challenge the evidence of compliance produced both internally (System Engineering, Design, Verif
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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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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.
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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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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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Cyber Security Engineer - DevSecOp
Cyber Security Engineer - DevSecOp
SUMMER-BROWNING ASSOCIATES LIMITED
London
Up to £0.00 per day + Excellent Day Rates
Summer-Browning Associates is currently assisting our client in the Public Sector, who is looking for a Cyber Security Engineering for an initial six-month assignment. Location: Hybrid working - London * Experience in penetration testing and vulnerability assessments of web applications, APIs, and cloud infrastructure. * Experience in integrating automated security tools into CI/CD pipelines (SAST, DAST, dependency checking, IaC, etc.) and making necessary recommendations. * Proficiency in security testing tools such as Burp Suite, OWASP ZAP, Nikto, Nmap, Metasploit, etc. * Ability to identify vulnerabilities and ensure secure coding practices. * Experience in maintaining security assurance across the SDLC in line with NCSC guidelines. * Knowledge of DevSecOps principles and tools (e.g., Veracode, SonarQube, GitHub Advanced Security, IaC scanning, etc.).
Summer-Browning Associates is currently assisting our client in the Public Sector, who is looking for a Cyber Security Engineering for an initial six-month assignment. Location: Hybrid working - London * Experience in penetration testing and vulnerability assessments of web applications, APIs, and cloud infrastructure. * Experience in integrating automated security tools into CI/CD pipelines (SAST, DAST, dependency checking, IaC, etc.) and making necessary recommendations. * Proficiency in security testing tools such as Burp Suite, OWASP ZAP, Nikto, Nmap, Metasploit, etc. * Ability to identify vulnerabilities and ensure secure coding practices. * Experience in maintaining security assurance across the SDLC in line with NCSC guidelines. * Knowledge of DevSecOps principles and tools (e.g., Veracode, SonarQube, GitHub Advanced Security, IaC scanning, etc.).
Related Jobs
Locations
- Northampton
- Kettering
- Milton Keynes
- Leicester
- Coventry
- Bedfordshire
- Buckinghamshire
- Bedford
- Market Harborough
- Banbury
- London
- Birmingham
- Leicestershire
- Nottinghamshire
- West Midlands
- East Midlands
- Midlands
- Peterborough
- Nottingham
- Cambridgeshire
- Manchester
- North West London
- Derby
- Bolton
- Warwick
- Norwich
- Derbyshire
- Oxfordshire
- East Anglia
- Wales
- Sheffield
- Liverpool
- Cambridge
- Telford
- Central London
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- Hampshire
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- City of London
- Greater Manchester
- Oxford
- Essex