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        19 Contract API jobs in Cassington + 20 miles

        871 exact matches jobs are outside your preferred location

        C# Developer - Risk IT

        Harvey Nash
        London
        £700 - £720 per day
        *inside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in SOLID Principles/Design patterns * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD. * Excellent communication skills and a pragmatic approach to problem-solving.
        *inside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in SOLID Principles/Design patterns * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD. * Excellent communication skills and a pragmatic approach to problem-solving.
        more
        *inside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in SOLID Principles/Design patterns * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD. * Excellent communication skills and a pragmatic approach to problem-solving.
        *inside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in SOLID Principles/Design patterns * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD. * Excellent communication skills and a pragmatic approach to problem-solving.
        more

        Gen AI Engineer

        Stackstudio Digital Ltd.
        London
        From £500 to £510 per day
        Role / Job Title:Gen AI Engineer Work Location:London, United Kingdom (Office) The Role The Senior GenAI Engineer will develop and deploy advanced Generative AI Products, including fine-tuning V/LLM models and implementing (Graph) RAG (Retrieval-Augmented Generation) solutions. This hands-on role requires deep technical expertise, and as part of the GenAI team, you will implement and optimize GenAI agents for the Global Supply Chain. Why is this job critical? This role ensures the effective use of Generative AI technologies within a Global Supply Chain by designing robust solutions, optimizing performance, and implementing AI governance. The GenAI Engineer is key in delivering efficient, reliable, and secure AI solutions, enhancing operational efficiency and strategic decision-making. Your Responsibilities Own Technical Implementation of GenAI Capabilities
        Role / Job Title:Gen AI Engineer Work Location:London, United Kingdom (Office) The Role The Senior GenAI Engineer will develop and deploy advanced Generative AI Products, including fine-tuning V/LLM models and implementing (Graph) RAG (Retrieval-Augmented Generation) solutions. This hands-on role requires deep technical expertise, and as part of the GenAI team, you will implement and optimize GenAI agents for the Global Supply Chain. Why is this job critical? This role ensures the effective use of Generative AI technologies within a Global Supply Chain by designing robust solutions, optimizing performance, and implementing AI governance. The GenAI Engineer is key in delivering efficient, reliable, and secure AI solutions, enhancing operational efficiency and strategic decision-making. Your Responsibilities Own Technical Implementation of GenAI Capabilities
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        Our team is looking for a high performance Solutions Architect with an entrepreneurial driven approach. As a Solutions Architect, you will lead the advertising industry by enabling clients to realize the full potential of Meta's marketing solutions and even defining new solutions. You will work with marketing executives at companies on their industry-leading advertising initiatives, translating their business goals into an execution plan using Metas suite of cutting-edge advertising platform. This role will allow you to apply your experience for problem solving to achieving real-world marketing results at Meta scale. * Act as a technical consultant and subject matter expert on Meta's marketing technology solutions for the marketing organizations at some of the largest companies in the world
        Our team is looking for a high performance Solutions Architect with an entrepreneurial driven approach. As a Solutions Architect, you will lead the advertising industry by enabling clients to realize the full potential of Meta's marketing solutions and even defining new solutions. You will work with marketing executives at companies on their industry-leading advertising initiatives, translating their business goals into an execution plan using Metas suite of cutting-edge advertising platform. This role will allow you to apply your experience for problem solving to achieving real-world marketing results at Meta scale. * Act as a technical consultant and subject matter expert on Meta's marketing technology solutions for the marketing organizations at some of the largest companies in the world
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        System Integration Engineer

        Certes IT Service Solutions
        Budbrooke Industrial Estate, Warwick (CV34), CV35
        From £400 to £500 per day
        We are seeking an experienced System Integration Engineer with a strong background working within a UK police force or policing environment to support a major records management system (RMS) migration programme. The role will focus on integrating legacy and surrounding policing systems with NicheRMS (or a comparable police RMS platform). Role Overview You will play a key role in the design, build, and delivery of complex system integrations, ensuring reliable data flows, interoperability, and compliance with policing and information governance standards. Working closely with technical architects, data migration engineers, suppliers, and policing stakeholders, you will help enable a smooth transition from legacy systems to NicheRMS. Key Responsibilities * Design, build, and support system integrations between NicheRMS and legacy or adjacent policing systems.
        We are seeking an experienced System Integration Engineer with a strong background working within a UK police force or policing environment to support a major records management system (RMS) migration programme. The role will focus on integrating legacy and surrounding policing systems with NicheRMS (or a comparable police RMS platform). Role Overview You will play a key role in the design, build, and delivery of complex system integrations, ensuring reliable data flows, interoperability, and compliance with policing and information governance standards. Working closely with technical architects, data migration engineers, suppliers, and policing stakeholders, you will help enable a smooth transition from legacy systems to NicheRMS. Key Responsibilities * Design, build, and support system integrations between NicheRMS and legacy or adjacent policing systems.
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        Location: London (2 days onsite per week) Employment Type: Permanent Security Clearance: Eligible for SC (or SC-cleared preferred) We are seeking a skilled Senior MuleSoft Developer to join a growing integration practice delivering solutions across UK public sector and enterprise clients. This is a permanent consultancy role where developers work across multiple projects, rather than being tied to a single engagement. You will take ownership of complex integrations, contribute to solution design, and act as a technical mentor within delivery teams. Key Responsibilities * Design and develop enterprise-grade integrations using the MuleSoft Anypoint Platform * Build APIs using API-led connectivity and established integration patterns * Lead development across Mule 4, DataWeave, connectors, and error handling frameworks
        Location: London (2 days onsite per week) Employment Type: Permanent Security Clearance: Eligible for SC (or SC-cleared preferred) We are seeking a skilled Senior MuleSoft Developer to join a growing integration practice delivering solutions across UK public sector and enterprise clients. This is a permanent consultancy role where developers work across multiple projects, rather than being tied to a single engagement. You will take ownership of complex integrations, contribute to solution design, and act as a technical mentor within delivery teams. Key Responsibilities * Design and develop enterprise-grade integrations using the MuleSoft Anypoint Platform * Build APIs using API-led connectivity and established integration patterns * Lead development across Mule 4, DataWeave, connectors, and error handling frameworks
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        FEATURED

        Senior iOS App Developer

        Stott & May Professional Search Limited
        London
        £85000 - £90000.00 per annum
        A leading retailer are looking for a Senior iOS App Developer to join their Mobile Team to contribute to the development and evolution of their Mobile App. As the Senior iOS App Developer, you will be responsible for building and maintaining the iOS version of the app, ensuring it delivers a pixel-perfect, performant, and luxury-aligned experience for customers. You will be a high-performing developer who thrives on clean architecture, elegant code collaborative delivery whilst working as part of an Agile cross-functional team. Skills and Experience * Strong proficiency in Swift and iOS SDKs, with a deep understanding of UIKit, SwiftUI, Combine, and Core frameworks. * Experience with RESTful APIs, JSON, and mobile architecture patterns (MVVM, Clean Architecture).
        A leading retailer are looking for a Senior iOS App Developer to join their Mobile Team to contribute to the development and evolution of their Mobile App. As the Senior iOS App Developer, you will be responsible for building and maintaining the iOS version of the app, ensuring it delivers a pixel-perfect, performant, and luxury-aligned experience for customers. You will be a high-performing developer who thrives on clean architecture, elegant code collaborative delivery whilst working as part of an Agile cross-functional team. Skills and Experience * Strong proficiency in Swift and iOS SDKs, with a deep understanding of UIKit, SwiftUI, Combine, and Core frameworks. * Experience with RESTful APIs, JSON, and mobile architecture patterns (MVVM, Clean Architecture).
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        Senior Android App Developer

        Stott & May Professional Search Limited
        London
        Up to £90000.00 per annum
        A leading retailer are looking for a Senior Android App Developer to join their Mobile Team to contribute to the development and evolution of their Mobile App. As the Senior Android App Developer, you will be responsible for building and maintaining the Android version of the app, ensuring it delivers a pixel-perfect, performant, and luxury-aligned experience for customers. You will be a high-performing developer who thrives on clean architecture, elegant code collaborative delivery whilst working as part of an Agile cross-functional team. Skills and Experience * Strong proficiency in Kotlin and Android SDKs, with a deep understanding of Jetpack libraries, Compose and modern Android architecture components. * Experience with RESTful APIs, JSON, and mobile architecture patterns (MVVM, Clean Architecture).
        A leading retailer are looking for a Senior Android App Developer to join their Mobile Team to contribute to the development and evolution of their Mobile App. As the Senior Android App Developer, you will be responsible for building and maintaining the Android version of the app, ensuring it delivers a pixel-perfect, performant, and luxury-aligned experience for customers. You will be a high-performing developer who thrives on clean architecture, elegant code collaborative delivery whilst working as part of an Agile cross-functional team. Skills and Experience * Strong proficiency in Kotlin and Android SDKs, with a deep understanding of Jetpack libraries, Compose and modern Android architecture components. * Experience with RESTful APIs, JSON, and mobile architecture patterns (MVVM, Clean Architecture).
        more

        Senior Business Analyst

        Morson Edge
        Warwick, Warwickshire, CV34
        £60k - 90k per year + Benefits
        * Job title: Senior Business Analyst * Location: Warwick (hybrid working – 2 days in the office so candidates who are commutable within Warwickshire are preferred) * Salary: £55,000 - £90,000 DOE + benefits A fast-growing consultancy and digital product specialist is seeking a Senior Business Analyst to join its expanding team. This is a newly created role, offering the opportunity to join the organisation at an exciting stage of growth and play a key role in delivering digital products to customers. This position offers strong scope for professional development within a collaborative, delivery-focused environment. The Role You will support the continued growth of the business by working directly with customers and the Product Deployment team to deliver successful digital product implementations.
        * Job title: Senior Business Analyst * Location: Warwick (hybrid working – 2 days in the office so candidates who are commutable within Warwickshire are preferred) * Salary: £55,000 - £90,000 DOE + benefits A fast-growing consultancy and digital product specialist is seeking a Senior Business Analyst to join its expanding team. This is a newly created role, offering the opportunity to join the organisation at an exciting stage of growth and play a key role in delivering digital products to customers. This position offers strong scope for professional development within a collaborative, delivery-focused environment. The Role You will support the continued growth of the business by working directly with customers and the Product Deployment team to deliver successful digital product implementations.
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        Job Title: Lead Software Developer Location: London, 1-2 days every 2 weeks Duration: until 2-Jan-27 Rate: £400-450 per day - umbrella only * API Development: Design, develop, and maintain robust, scalable APIs using modern frameworks and technologies. * Azure Logic Apps: Configure and integrate Azure Logic Apps to enable seamless workflows and business process automation. * Proficiency Coding Languages JSON, JavaScript, PowerShell & C# * Azure Security: Implement and adhere to best practices in Azure security, including identity management, access control, and threat protection. * Front-End Development: Build responsive and user-friendly front-end interfaces using frameworks such as React, Angular, or Vue.js. * Back-End Development: Develop and maintain server-side logic with programming languages like .NET, Node.js, or Python.
        Job Title: Lead Software Developer Location: London, 1-2 days every 2 weeks Duration: until 2-Jan-27 Rate: £400-450 per day - umbrella only * API Development: Design, develop, and maintain robust, scalable APIs using modern frameworks and technologies. * Azure Logic Apps: Configure and integrate Azure Logic Apps to enable seamless workflows and business process automation. * Proficiency Coding Languages JSON, JavaScript, PowerShell & C# * Azure Security: Implement and adhere to best practices in Azure security, including identity management, access control, and threat protection. * Front-End Development: Build responsive and user-friendly front-end interfaces using frameworks such as React, Angular, or Vue.js. * Back-End Development: Develop and maintain server-side logic with programming languages like .NET, Node.js, or Python.
        more
        FEATURED
        Hybrid working - 1-2 Days per week onsite Salary - Up to £75,000 Integration Developer based in Birmingham. My client is currently seeking an Integration Developer to come on board to focus on designing, developing, and supporting integrations between SAP and various enterprise applications. This role requires strong expertise in IBM Integration Bus (IIB) and SAP Cloud Platform Integration (SAP CPI) to ensure seamless data exchange across business systems. You will collaborate with functional teams, architects, and external vendors. * Extensive hands-on experience with SAP Cloud Platform Integration (CPI), focused on designing and maintaining SAP-based integrations. * Provide technical expertise for SAP S/4HANA and cloud integration scenarios, including hybrid environments.
        Hybrid working - 1-2 Days per week onsite Salary - Up to £75,000 Integration Developer based in Birmingham. My client is currently seeking an Integration Developer to come on board to focus on designing, developing, and supporting integrations between SAP and various enterprise applications. This role requires strong expertise in IBM Integration Bus (IIB) and SAP Cloud Platform Integration (SAP CPI) to ensure seamless data exchange across business systems. You will collaborate with functional teams, architects, and external vendors. * Extensive hands-on experience with SAP Cloud Platform Integration (CPI), focused on designing and maintaining SAP-based integrations. * Provide technical expertise for SAP S/4HANA and cloud integration scenarios, including hybrid environments.
        more
        Lead Technical Test Engineer Remote 3 month contract - potential for extension Outside IR35 £450pd iO are working with an established and rapidly growing Digital agency in their search for an experienced Lead Technical Test Engineer They work with global technology leaders to provide digital transformation services to a number of customers in industries including not-for-profit, financial services and the pubic sector You will bring years of experience, understanding and practical application in all levels and types of testing and a good understanding and usage of AWS services to assist in the set-up and triggering of test conditions. As the Lead Test Engineer, you will support the Test Manager with the strategy and coordinating a small team of Technical Test Engineers * Minimum of 5 years' experience in BOTH testing and test leadership
        Lead Technical Test Engineer Remote 3 month contract - potential for extension Outside IR35 £450pd iO are working with an established and rapidly growing Digital agency in their search for an experienced Lead Technical Test Engineer They work with global technology leaders to provide digital transformation services to a number of customers in industries including not-for-profit, financial services and the pubic sector You will bring years of experience, understanding and practical application in all levels and types of testing and a good understanding and usage of AWS services to assist in the set-up and triggering of test conditions. As the Lead Test Engineer, you will support the Test Manager with the strategy and coordinating a small team of Technical Test Engineers * Minimum of 5 years' experience in BOTH testing and test leadership
        more
        FEATURED
        Description and requirements Skanska, one of the worlds leading project development and construction groups, is an inclusive and responsible business that is helping to build a better society. We are looking for a Senior GIS Analyst to join our HS2 Main works team in London. This is an exciting opportunity to be involved in a project which will expose the candidate to a wide range of systems, software, skills, expertise and insight. The Senior GIS Technician is a core member of the GIS Team within the BIM Team at SCS Railways, splitting time equally between the Environment Team and the Consents & Engagement Team, providing a GIS Service to each.
        Description and requirements Skanska, one of the worlds leading project development and construction groups, is an inclusive and responsible business that is helping to build a better society. We are looking for a Senior GIS Analyst to join our HS2 Main works team in London. This is an exciting opportunity to be involved in a project which will expose the candidate to a wide range of systems, software, skills, expertise and insight. The Senior GIS Technician is a core member of the GIS Team within the BIM Team at SCS Railways, splitting time equally between the Environment Team and the Consents & Engagement Team, providing a GIS Service to each.
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        The Onyx Research Data Tech organization represents a major investment by GSK R&D and Digital & Tech, designed to deliver a step-change in our ability to leverage data, knowledge, and prediction to find new medicines. * Building a next-generation data experience for GSKs scientists, engineers, and decision-makers, increasing productivity and reducing time spent on data mechanics * Providing best-in-class AI/ML and data analysis environments to accelerate our predictive capabilities and attract top-tier talent * Aggressively engineering our data at scale to unlock the value of our combined data assets * Implementing scientific technology products that leverage the data and capabilities provisioned by Onyx
        The Onyx Research Data Tech organization represents a major investment by GSK R&D and Digital & Tech, designed to deliver a step-change in our ability to leverage data, knowledge, and prediction to find new medicines. * Building a next-generation data experience for GSKs scientists, engineers, and decision-makers, increasing productivity and reducing time spent on data mechanics * Providing best-in-class AI/ML and data analysis environments to accelerate our predictive capabilities and attract top-tier talent * Aggressively engineering our data at scale to unlock the value of our combined data assets * Implementing scientific technology products that leverage the data and capabilities provisioned by Onyx
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        At Mace, our purpose is to redefine the boundaries of ambition. We believe in creating places that are responsible, bringing transformative impact to our people, communities and societies across the globe. To learn more about our purpose, culture and priorities, visit our strategy site. Within our consult business, we harness our unique combination of leading-edge practical expertise and project delivery consultancy to unlock the potential in every project. * Safety first - Going home safe and well. * Client focus - Deliver on our promise. * Integrity - Always do the right thing. * Create opportunity - for our people to excel. The role is for a developer specialising in the Microsoft Power platform technology stack (SharePoint Online, Power Apps, Power Automate and Power Pages). It is a client-facing role supporting fee-earning projects and programmes.
        At Mace, our purpose is to redefine the boundaries of ambition. We believe in creating places that are responsible, bringing transformative impact to our people, communities and societies across the globe. To learn more about our purpose, culture and priorities, visit our strategy site. Within our consult business, we harness our unique combination of leading-edge practical expertise and project delivery consultancy to unlock the potential in every project. * Safety first - Going home safe and well. * Client focus - Deliver on our promise. * Integrity - Always do the right thing. * Create opportunity - for our people to excel. The role is for a developer specialising in the Microsoft Power platform technology stack (SharePoint Online, Power Apps, Power Automate and Power Pages). It is a client-facing role supporting fee-earning projects and programmes.
        more
        At Mace, our purpose is to redefine the boundaries of ambition. We believe in creating places that are responsible, bringing transformative impact to our people, communities and societies across the globe. To learn more about our purpose, culture and priorities, visit our strategy site. Within our consult business, we harness our unique combination of leading-edge practical expertise and project delivery consultancy to unlock the potential in every project. * Safety first - Going home safe and well. * Client focus - Deliver on our promise. * Integrity - Always do the right thing. * Create opportunity - for our people to excel. The role is for a developer specialising in the Microsoft Power platform technology stack (SharePoint Online, Power Apps, Power Automate and Power Pages). It is a client-facing role supporting fee-earning projects and programmes.
        At Mace, our purpose is to redefine the boundaries of ambition. We believe in creating places that are responsible, bringing transformative impact to our people, communities and societies across the globe. To learn more about our purpose, culture and priorities, visit our strategy site. Within our consult business, we harness our unique combination of leading-edge practical expertise and project delivery consultancy to unlock the potential in every project. * Safety first - Going home safe and well. * Client focus - Deliver on our promise. * Integrity - Always do the right thing. * Create opportunity - for our people to excel. The role is for a developer specialising in the Microsoft Power platform technology stack (SharePoint Online, Power Apps, Power Automate and Power Pages). It is a client-facing role supporting fee-earning projects and programmes.
        more
        Lead Technical Test Engineer Remote 3 month contract - potential for extension Outside IR35 £450pd iO are working with an established and rapidly growing Digital agency in their search for an experienced Lead Technical Test Engineer They work with global technology leaders to provide digital transformation services to a number of customers in industries including not-for-profit, financial services and the pubic sector You will bring years of experience, understanding and practical application in all levels and types of testing and a good understanding and usage of AWS services to assist in the set-up and triggering of test conditions. As the Lead Test Engineer, you will support the Test Manager with the strategy and coordinating a small team of Technical Test Engineers * Minimum of 5 years' experience in BOTH testing and test leadership
        Lead Technical Test Engineer Remote 3 month contract - potential for extension Outside IR35 £450pd iO are working with an established and rapidly growing Digital agency in their search for an experienced Lead Technical Test Engineer They work with global technology leaders to provide digital transformation services to a number of customers in industries including not-for-profit, financial services and the pubic sector You will bring years of experience, understanding and practical application in all levels and types of testing and a good understanding and usage of AWS services to assist in the set-up and triggering of test conditions. As the Lead Test Engineer, you will support the Test Manager with the strategy and coordinating a small team of Technical Test Engineers * Minimum of 5 years' experience in BOTH testing and test leadership
        more
        FEATURED
        PHP Engineering Lead Working Hours: Full time Job Type: Permanent Permanent Salary: £110,000 (negotiable dependent on experience) Location: Hybrid: minimum 2 days per week at our clients Elstree / Kings Cross offices Our client is a forward-thinking technology organisation reshaping how creative products are produced and delivered. Their platform connects a global network of industry partners while empowering independent artists with scalable, accessible tools. As demand grows, the company is rapidly expanding its platform and infrastructure to support increasing global scale. Our client is seeking a PHP Engineering Lead to balance approximately 50% hands-on engineering with 50% leadership, architecture, and team development. This role requires someone who can bring structure, clarity, and technical direction to a growing engineering function.
        PHP Engineering Lead Working Hours: Full time Job Type: Permanent Permanent Salary: £110,000 (negotiable dependent on experience) Location: Hybrid: minimum 2 days per week at our clients Elstree / Kings Cross offices Our client is a forward-thinking technology organisation reshaping how creative products are produced and delivered. Their platform connects a global network of industry partners while empowering independent artists with scalable, accessible tools. As demand grows, the company is rapidly expanding its platform and infrastructure to support increasing global scale. Our client is seeking a PHP Engineering Lead to balance approximately 50% hands-on engineering with 50% leadership, architecture, and team development. This role requires someone who can bring structure, clarity, and technical direction to a growing engineering function.
        more

        Software Developer

        Experis UK
        Cheltenham (GL50)
        £50000 - £60000 per annum
        Cheltenham | Hybrid (3 days per week in the office) | £50,000 per annum We're looking for a talented Software Developer to join a growing, forward-thinking technology team working on high-performance, scalable software solutions. This is an excellent opportunity for a developer who enjoys working across the full stack and wants to contribute to the design, build and deployment of modern web applications. In this role, you'll work closely with cross-functional teams to deliver robust, user-focused solutions using Python and associated technologies. You'll be involved throughout the development lifecycle, from understanding requirements through to deployment and ongoing optimisation. * Designing, developing and maintaining Python-based web applications using Flask * Building and managing data storage solutions with MongoDB
        Cheltenham | Hybrid (3 days per week in the office) | £50,000 per annum We're looking for a talented Software Developer to join a growing, forward-thinking technology team working on high-performance, scalable software solutions. This is an excellent opportunity for a developer who enjoys working across the full stack and wants to contribute to the design, build and deployment of modern web applications. In this role, you'll work closely with cross-functional teams to deliver robust, user-focused solutions using Python and associated technologies. You'll be involved throughout the development lifecycle, from understanding requirements through to deployment and ongoing optimisation. * Designing, developing and maintaining Python-based web applications using Flask * Building and managing data storage solutions with MongoDB
        more
        FEATURED

        QA Automation Engineer/Tester, Playwright, Remote

        Sanderson Recruitment
        London
        £45000 - £55000 per annum + Bonus Scheme, Healthcare
        QA Automation Engineer/Tester, Playwright Remote working Our client, a Leading consultancy is looking to hire a QA Automation Engineer/Tester. The successful candidate will work closely with other QA Automation Engineers/Testers to drive efforts to build up a robust automation test framework, automation test suites and execution analysis to support their projects. You also will be automating a combination of Performance, UI, API, Accessibility & compatibility test types while also providing insights with the latest approaches to software engineering and be given the opportunity to update and improve the QA stack as appropriate. Responsibility of ensuring testing frameworks are defined, improved, monitored and documented and, analysing execution and bugs across the stack and ensuring that suitable tests are set up to avoid regression impacts.
        QA Automation Engineer/Tester, Playwright Remote working Our client, a Leading consultancy is looking to hire a QA Automation Engineer/Tester. The successful candidate will work closely with other QA Automation Engineers/Testers to drive efforts to build up a robust automation test framework, automation test suites and execution analysis to support their projects. You also will be automating a combination of Performance, UI, API, Accessibility & compatibility test types while also providing insights with the latest approaches to software engineering and be given the opportunity to update and improve the QA stack as appropriate. Responsibility of ensuring testing frameworks are defined, improved, monitored and documented and, analysing execution and bugs across the stack and ensuring that suitable tests are set up to avoid regression impacts.
        more
        FEATURED

        Application and Monitoring SME

        OCTOPUS COMPUTER ASSOCIATES
        Wokingham, Berkshire
        £306.25 per day
        Blue chip client is looking for an Application and Monitoring SME Role is based full time on site in Wokingham. Candidates must be eligible for SC Clearance. MUST BE PAYE THROUGH UMBRELLA (INSIDE IR35) Working from Warwick office, ideally within 1 hours travel Wokingham office considered but needs to travel to Warwick office for training Primary skills - L1 monitoring/observability, ITIL process, incident, MIM, etc Secondary skills - L1 troubleshooting, work with multi-team and engage with L2 support engineers and partners - Monitoring Strategy & Implementation - Define and implement monitoring frameworks for enterprise applications, Middleware, and infrastructure. - Deploy and configure monitoring tools (eg, Dynatrace, AppDynamics, Splunk, Prometheus, Grafana, Datadog). - Establish KPIs, dashboards, and alerting mechanisms for proactive issue detection.
        Blue chip client is looking for an Application and Monitoring SME Role is based full time on site in Wokingham. Candidates must be eligible for SC Clearance. MUST BE PAYE THROUGH UMBRELLA (INSIDE IR35) Working from Warwick office, ideally within 1 hours travel Wokingham office considered but needs to travel to Warwick office for training Primary skills - L1 monitoring/observability, ITIL process, incident, MIM, etc Secondary skills - L1 troubleshooting, work with multi-team and engage with L2 support engineers and partners - Monitoring Strategy & Implementation - Define and implement monitoring frameworks for enterprise applications, Middleware, and infrastructure. - Deploy and configure monitoring tools (eg, Dynatrace, AppDynamics, Splunk, Prometheus, Grafana, Datadog). - Establish KPIs, dashboards, and alerting mechanisms for proactive issue detection.
        more

        Application and Monitoring SME

        OCTOPUS COMPUTER ASSOCIATES
        Warwick, Warwickshire
        £306.25 per day
        Blue chip client is looking for an Application and Monitoring SME Role is based full time on site in Warwick Candidates must be eligible for SC Clearance. MUST BE PAYE THROUGH UMBRELLA (INSIDE IR35) Working from Warwick office, ideally within 1 hours travel Wokingham office considered but needs to travel to Warwick office for training Primary skills - L1 monitoring/observability, ITIL process, incident, MIM, etc Secondary skills - L1 troubleshooting, work with multi-team and engage with L2 support engineers and partners - Monitoring Strategy & Implementation - Define and implement monitoring frameworks for enterprise applications, Middleware, and infrastructure. - Deploy and configure monitoring tools (eg, Dynatrace, AppDynamics, Splunk, Prometheus, Grafana, Datadog). - Establish KPIs, dashboards, and alerting mechanisms for proactive issue detection.
        Blue chip client is looking for an Application and Monitoring SME Role is based full time on site in Warwick Candidates must be eligible for SC Clearance. MUST BE PAYE THROUGH UMBRELLA (INSIDE IR35) Working from Warwick office, ideally within 1 hours travel Wokingham office considered but needs to travel to Warwick office for training Primary skills - L1 monitoring/observability, ITIL process, incident, MIM, etc Secondary skills - L1 troubleshooting, work with multi-team and engage with L2 support engineers and partners - Monitoring Strategy & Implementation - Define and implement monitoring frameworks for enterprise applications, Middleware, and infrastructure. - Deploy and configure monitoring tools (eg, Dynatrace, AppDynamics, Splunk, Prometheus, Grafana, Datadog). - Establish KPIs, dashboards, and alerting mechanisms for proactive issue detection.
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        You must have an active DV for this role Inside IR35 Purpose of the Role The Zscaler Technical Specialist provides deep technical expertise in Zscaler technologies to enhance and optimize the organization's secure access and cloud security posture. Working closely with Engineering, Network, and Security teams, this role uplifts internal capability, improves configuration and deployment practices, and ensures the Zscaler platform is fully leveraged to deliver secure, scalable, and high-performance connectivity across global Diplomatic and Development Services. This position plays a key role in driving best practices, reducing technical debt, and aligning Zscaler capabilities with strategic business objectives. Key Responsibilities
        You must have an active DV for this role Inside IR35 Purpose of the Role The Zscaler Technical Specialist provides deep technical expertise in Zscaler technologies to enhance and optimize the organization's secure access and cloud security posture. Working closely with Engineering, Network, and Security teams, this role uplifts internal capability, improves configuration and deployment practices, and ensures the Zscaler platform is fully leveraged to deliver secure, scalable, and high-performance connectivity across global Diplomatic and Development Services. This position plays a key role in driving best practices, reducing technical debt, and aligning Zscaler capabilities with strategic business objectives. Key Responsibilities
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        FEATURED

        Software Engineer

        Spectrum It Recruitment Limited
        Aylesbury (HP17)
        £50000 - £55000 per annum + plus benefits
        - GoLang, JavaScript, Linux, hardware - In office location of Aylesbury, Buckinghamshire. Some flex on hybird working. - Salary circa £50,000 - £55,000 plus benefits Technology provider of secure identity, access, and authentication solutions. My client build high-performance software and hardware systems that support mission-critical identity operations. The engineering team works across embedded systems, backend services, and security infrastructure to deliver reliable, scalable products. Role Overview You will be a versatile Software Engineer with strong experience in Go (Golang), JavaScript, Linux environments, and hardware configuration. The ideal candidate is comfortable working across the full stack-from backend services to device-level integration-and enjoys solving complex problems in a fast-paced, product-focused environment. Key Responsibilities
        - GoLang, JavaScript, Linux, hardware - In office location of Aylesbury, Buckinghamshire. Some flex on hybird working. - Salary circa £50,000 - £55,000 plus benefits Technology provider of secure identity, access, and authentication solutions. My client build high-performance software and hardware systems that support mission-critical identity operations. The engineering team works across embedded systems, backend services, and security infrastructure to deliver reliable, scalable products. Role Overview You will be a versatile Software Engineer with strong experience in Go (Golang), JavaScript, Linux environments, and hardware configuration. The ideal candidate is comfortable working across the full stack-from backend services to device-level integration-and enjoys solving complex problems in a fast-paced, product-focused environment. Key Responsibilities
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        Payment Architect

        Stackstudio Digital Ltd.
        Northampton, Northamptonshire
        Unspecified
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
        Job title- Payment Architect Location: Milton Keynes (2-3 days) Duration: 6 Months Job Description Santander UK is expanding its Payments Solution Architecture team. We are looking for senior level architects with deep experience in payments execution processing. These hires will support the modernisation of our payments estate and the migration of legacy platforms to the Payments Hub (PagoNxt). The individuals must have strong payments scheme knowledge, deep understanding of ISO 20022, and proven experience designing solutions for core payment processing. Payments domain expertise * Strong experience across payments execution processes such as orchestration, order management, clearing, settlement, reconciliations, exception handling and returns. * Practical scheme knowledge in at least several of the following: Bacs, Faster Payments, CHAPS, SWIFT, SEPA, cheques.
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        Frequently Asked Questions

        How many contract API jobs are there in Cassington?
        There are 19 contract API jobs within 20 miles of Cassington available on Jobsite right now.

        Where in Cassington are these contract jobs?
        You can find contract jobs in Freshbrook, Longbridge, Adderbury.

        What other similar jobs are there to contract API jobs in Cassington?
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