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        4 Contract API jobs in Windsor + 20 miles

        Data Engineer

        Infoplus Technologies UK Ltd
        Harmondsworth, West Drayton (UB7)
        From £450 to £500 per day
        Strong knowledge of data modeling and API integration.
        Strong knowledge of data modeling and API integration.

        CAFM Specialist

        Technical Staffing Resources Limited
        Leatherhead (KT22)
        From £75 to £80 per hour
        Experience of API technologies and writing Restful APIs in JSON
        Experience of API technologies and writing Restful APIs in JSON
        FEATURED

        Python Developer

        Stackstudio Digital Ltd.
        Wokingham (RG40)
        From £300 to £340 per day
        Role Details - Role / Job Title:Python Developer - Work Location:Wokingham, UK - Mode of Working:Office - The Role - We are seeking an experienced Python Developer with strong expertise in algorithm development, optimization modelling, and power system techno-economic assessment. The ideal candidate will have deep knowledge of Python's core features, data analysis, web frameworks, and modern development practices. Experience with mathematical optimization tools, containerization, and message-queue technologies will be considered a significant advantage. Your Responsibilities - Python Development & Software Engineering - Develop, optimize, and maintain software using core Python features including iterators/generators, exception handling, file handling, type hints, OOP, and data structure design. Build scalable algorithms and write clean, maintainable, and well-structured code.
        Role Details - Role / Job Title:Python Developer - Work Location:Wokingham, UK - Mode of Working:Office - The Role - We are seeking an experienced Python Developer with strong expertise in algorithm development, optimization modelling, and power system techno-economic assessment. The ideal candidate will have deep knowledge of Python's core features, data analysis, web frameworks, and modern development practices. Experience with mathematical optimization tools, containerization, and message-queue technologies will be considered a significant advantage. Your Responsibilities - Python Development & Software Engineering - Develop, optimize, and maintain software using core Python features including iterators/generators, exception handling, file handling, type hints, OOP, and data structure design. Build scalable algorithms and write clean, maintainable, and well-structured code.
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        Python Developer

        Infoplus Technologies UK Ltd
        Wokingham, Berkshire
        From £320 to £380 per day
        The Role - We are seeking an experienced Python Developer with strong expertise in algorithm development, optimization modelling, and power system techno-economic assessment. The ideal candidate will have deep knowledge of Pythons core features, data analysis, web frameworks, and modern development practices. Experience with mathematical optimization tools, containerization, and message-queue technologies will be considered a significant advantage. Work from Office - Python Development & Software Engineering - Develop, optimize, and maintain software using core Python features including iterators/generators, exception handling, file handling, type hints, OOP, and data structure design. Build scalable algorithms and write clean, maintainable, and well-structured code. Develop and maintain RESTful APIs using OpenAPI/Swagger, Connexion, or FastAPI.
        The Role - We are seeking an experienced Python Developer with strong expertise in algorithm development, optimization modelling, and power system techno-economic assessment. The ideal candidate will have deep knowledge of Pythons core features, data analysis, web frameworks, and modern development practices. Experience with mathematical optimization tools, containerization, and message-queue technologies will be considered a significant advantage. Work from Office - Python Development & Software Engineering - Develop, optimize, and maintain software using core Python features including iterators/generators, exception handling, file handling, type hints, OOP, and data structure design. Build scalable algorithms and write clean, maintainable, and well-structured code. Develop and maintain RESTful APIs using OpenAPI/Swagger, Connexion, or FastAPI.
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        43 exact matches jobs are outside your preferred location

        Akamai L3 SME

        Stackstudio Digital Ltd.
        London
        From £500 to £550 per day
        Manage and optimize Akamai security suites including: WAF, L7 Anti DDoS, Bot Manager Premier, API Security, Site Shield, API Acceleration. Akamai certifications (WAF, DDoS, Bot Manager, API Protector, Site Shield) are a strong plus.
        Manage and optimize Akamai security suites including: WAF, L7 Anti DDoS, Bot Manager Premier, API Security, Site Shield, API Acceleration. Akamai certifications (WAF, DDoS, Bot Manager, API Protector, Site Shield) are a strong plus.
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        The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
        The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
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        Solution Architect

        Stackstudio Digital Ltd.
        London
        From £550 to £600 per day
        Role Details - Role / Job Title: Solution Architect - Work Location: London - Role Type: Contracting - Office Requirement: 1 day in office - Role Overview - We are seeking an experienced Solution Architect to lead the design and governance of large-scale, enterprise cloud platforms built on AWS. This role requires deep technical expertise in AWS architecture, Infrastructure as Code (Terraform), CI/CD pipelines, and Python-based automation, combined with strong enterprise architecture, security, and stakeholder leadership skills. The successful candidate will define enterprise cloud strategy, establish architectural standards, and ensure consistent, secure, and scalable solution delivery across multiple business units and delivery teams. Key Responsibilities - Enterprise Architecture & Strategy * Define and own enterprise cloud architecture strategy aligned with business and IT roadmaps
        Role Details - Role / Job Title: Solution Architect - Work Location: London - Role Type: Contracting - Office Requirement: 1 day in office - Role Overview - We are seeking an experienced Solution Architect to lead the design and governance of large-scale, enterprise cloud platforms built on AWS. This role requires deep technical expertise in AWS architecture, Infrastructure as Code (Terraform), CI/CD pipelines, and Python-based automation, combined with strong enterprise architecture, security, and stakeholder leadership skills. The successful candidate will define enterprise cloud strategy, establish architectural standards, and ensure consistent, secure, and scalable solution delivery across multiple business units and delivery teams. Key Responsibilities - Enterprise Architecture & Strategy * Define and own enterprise cloud architecture strategy aligned with business and IT roadmaps
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        Senior Java Developer (Contract) Java | Spring Boot | Kafka | Microservices | Kubernetes | AWS - London (Hybrid) | 912 Months | Competitive Day Rate - We are hiring a Senior Java Developer for a long-term contract within a major financial market infrastructure organisation in London. This role is focused on event-driven microservices, Kafka-based architectures, containerised deployments, and high-performance distributed systems. If your experience is primarily CRUD REST APIs without large-scale distributed systems exposure, this role will not be the right fit. Core Requirements (Must Have) * Strong Core Java development (Java 10+) * Extensive Spring Boot experience * Proven Microservices architecture experience * Hands-on Apache Kafka (producers, consumers, topics, partitions) * Experience building event-driven systems * Docker & Kubernetes in production
        Senior Java Developer (Contract) Java | Spring Boot | Kafka | Microservices | Kubernetes | AWS - London (Hybrid) | 912 Months | Competitive Day Rate - We are hiring a Senior Java Developer for a long-term contract within a major financial market infrastructure organisation in London. This role is focused on event-driven microservices, Kafka-based architectures, containerised deployments, and high-performance distributed systems. If your experience is primarily CRUD REST APIs without large-scale distributed systems exposure, this role will not be the right fit. Core Requirements (Must Have) * Strong Core Java development (Java 10+) * Extensive Spring Boot experience * Proven Microservices architecture experience * Hands-on Apache Kafka (producers, consumers, topics, partitions) * Experience building event-driven systems * Docker & Kubernetes in production
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        Role: Automation Specialist (Discovery) Location: London (Hybrid) Type: Initial 4-week contract - Status: Outside IR35 - The role - Cedar are supporting a client undertaking a focused discovery of their transactional finance environment, with the objective of reducing manual processing through targeted automation, improved data flows and system efficiency. The current landscape relies heavily on Excel-based processes, manual journal handling, and data movement between ERP, banking platforms, and reporting outputs. There is limited use of structured automation. This engagement requires a hands-on specialist who can operate at the level of process, data, and tooling. You will analyse how data moves across the finance function, identify failure points and inefficiencies, and implement practical automation using the Microsoft stack.
        Role: Automation Specialist (Discovery) Location: London (Hybrid) Type: Initial 4-week contract - Status: Outside IR35 - The role - Cedar are supporting a client undertaking a focused discovery of their transactional finance environment, with the objective of reducing manual processing through targeted automation, improved data flows and system efficiency. The current landscape relies heavily on Excel-based processes, manual journal handling, and data movement between ERP, banking platforms, and reporting outputs. There is limited use of structured automation. This engagement requires a hands-on specialist who can operate at the level of process, data, and tooling. You will analyse how data moves across the finance function, identify failure points and inefficiencies, and implement practical automation using the Microsoft stack.
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        .NET Developer

        DGH Recruitment
        East London (E1)
        £55000 - £60000 per annum
        .NET Software Engineer - 12 month FTC - An opportunity to join a major transformation programme, building modern, scalable solutions and contributing to a data-driven technology landscape. Role Overview - Working within an agile engineering squad, you will develop new features, build integrations, and support cloud-based platforms using the latest Microsoft technologies. The role includes feature development, system integrations, and contributing to CI/CD, monitoring, and security improvements. Key Responsibilities - Design, develop and maintain reliable .NET solutions (primarily C#). Build features for both internal and external users. Develop integrations across internal systems, third-party tools, and Azure services. Create and maintain CI/CD pipelines (Azure DevOps). Participate in agile ceremonies and collaborate in code reviews.
        .NET Software Engineer - 12 month FTC - An opportunity to join a major transformation programme, building modern, scalable solutions and contributing to a data-driven technology landscape. Role Overview - Working within an agile engineering squad, you will develop new features, build integrations, and support cloud-based platforms using the latest Microsoft technologies. The role includes feature development, system integrations, and contributing to CI/CD, monitoring, and security improvements. Key Responsibilities - Design, develop and maintain reliable .NET solutions (primarily C#). Build features for both internal and external users. Develop integrations across internal systems, third-party tools, and Azure services. Create and maintain CI/CD pipelines (Azure DevOps). Participate in agile ceremonies and collaborate in code reviews.
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        Security Architect

        Morson Edge
        Moorgate, City of London (EC2), EC2Y 9AQ
        £800 - 825 per day
        London (1 day per month - may be more frequent) - £800 - £825 Inside IR35 - Morson Edge have partnered with a major UK retail client to recruit an experienced Security Architect to play a pivotal role in a high-profile Cyber Security Maturity Programme within the CISO function. This a great opportunity to shape and elevate enterprise-wide cyber maturity, influence strategic direction, and drive meaningful, measurable improvements to security resilience across a complex technology estate. You’ll act as a security champion, working at the heart of architecture, engineering, and business teams to embed secure-by-design principles and deliver a forward-looking security architecture that evolves with both business priorities and the threat landscape. What You’ll Be Doing * Lead the design and evolution of target-state security architectures aligned to maturity goals * Drive cyber ...
        London (1 day per month - may be more frequent) - £800 - £825 Inside IR35 - Morson Edge have partnered with a major UK retail client to recruit an experienced Security Architect to play a pivotal role in a high-profile Cyber Security Maturity Programme within the CISO function. This a great opportunity to shape and elevate enterprise-wide cyber maturity, influence strategic direction, and drive meaningful, measurable improvements to security resilience across a complex technology estate. You’ll act as a security champion, working at the heart of architecture, engineering, and business teams to embed secure-by-design principles and deliver a forward-looking security architecture that evolves with both business priorities and the threat landscape. What You’ll Be Doing * Lead the design and evolution of target-state security architectures aligned to maturity goals * Drive cyber ...
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        PREMIUM
        Job Title: Guidewire Business Analyst Commercial Insurance - Location: London- 1 day - Job Type: 6 months- Inside IR35 - Role Overview - We are seeking a Guidewire Business Analyst with strong experience in Commercial Insurance (Policy, Billing, Claims) to bridge business needs and technology delivery. The ideal candidate will work closely with stakeholders to define requirements, support Guidewire implementations, and drive process improvements. Key Responsibilities - Gather and document business and functional requirements for Guidewire implementations - Work with underwriting, claims, and operations teams - Translate requirements into functional specifications and user stories - Support end-to-end Guidewire implementations and enhancements - Collaborate with development, QA, and architecture teams - Support UAT and defect management - Conduct stakeholder workshops
        Job Title: Guidewire Business Analyst Commercial Insurance - Location: London- 1 day - Job Type: 6 months- Inside IR35 - Role Overview - We are seeking a Guidewire Business Analyst with strong experience in Commercial Insurance (Policy, Billing, Claims) to bridge business needs and technology delivery. The ideal candidate will work closely with stakeholders to define requirements, support Guidewire implementations, and drive process improvements. Key Responsibilities - Gather and document business and functional requirements for Guidewire implementations - Work with underwriting, claims, and operations teams - Translate requirements into functional specifications and user stories - Support end-to-end Guidewire implementations and enhancements - Collaborate with development, QA, and architecture teams - Support UAT and defect management - Conduct stakeholder workshops
        more

        Junior AI Consultant Apprentice

        EXL Service
        The City, City of London (EC3), EC3N 1DD
        Paid Apprenticeship
        EXL (NASDAQ: EXLS)is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, including the world's leading corporations in industries including insurance, healthcare and life sciences, banking and capital markets, retail, communications and media, and energy and infrastructure, among others. EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. We are headquartered in New York and have over 65,000 employees spanning six continents. Role Title:Junior AI Consultant Apprentice - BU/Segment:International Growth Markets / AI & Data Solutions - Location:EXL London.
        EXL (NASDAQ: EXLS)is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, including the world's leading corporations in industries including insurance, healthcare and life sciences, banking and capital markets, retail, communications and media, and energy and infrastructure, among others. EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. We are headquartered in New York and have over 65,000 employees spanning six continents. Role Title:Junior AI Consultant Apprentice - BU/Segment:International Growth Markets / AI & Data Solutions - Location:EXL London.
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        ServiceNow Developer

        Stackstudio Digital Ltd.
        London
        From £500 to £550 per day
        Role Details - Role / Job Title:ServiceNow Developer - Work Location:London - Mode of Working:Hybrid - If Hybrid, Days Required in Office:2 to 3 days - The Role - Pi7 to ServiceNow migration is on a critical path and we need a strong ServiceNow developer. This person will be responsible for supporting the migration along with working across CMDB, Incident, problem, change and release management. Key Responsibilities - Lead and support migration activities from PI7 to ServiceNow - Analyze existing PI7 integrations and workflows and redesign them within ServiceNow - Design, configure, and develop ServiceNow modules CMDB, incident, problem and change modules and applications - Build and maintain integrations using REST, SOAP, MID Server, and Integration Hub - Workflows / Flow Designer - Business Rules - UI Policies and UI Actions - Forms and Service Catalog
        Role Details - Role / Job Title:ServiceNow Developer - Work Location:London - Mode of Working:Hybrid - If Hybrid, Days Required in Office:2 to 3 days - The Role - Pi7 to ServiceNow migration is on a critical path and we need a strong ServiceNow developer. This person will be responsible for supporting the migration along with working across CMDB, Incident, problem, change and release management. Key Responsibilities - Lead and support migration activities from PI7 to ServiceNow - Analyze existing PI7 integrations and workflows and redesign them within ServiceNow - Design, configure, and develop ServiceNow modules CMDB, incident, problem and change modules and applications - Build and maintain integrations using REST, SOAP, MID Server, and Integration Hub - Workflows / Flow Designer - Business Rules - UI Policies and UI Actions - Forms and Service Catalog
        more
        Job Title: Implementation Specialist E-Invoicing - Location: London- 1 day - Job Type: 6 months- Inside IR35 - Role overview - Are you looking for a role that will use your problem-solving skills, technical interests, and client communication skills to their full potential? We are seeking Implementation Specialists to join our e-invoicing Professional Services team and lead the technical implementation of our e-invoicing platform with global clients. This is the perfect role for a well-organised, collaborative, and analytical person who wants to grow their career within the software implementation space and work with a varied portfolio of multinational clients. You'll use your technical aptitude, excellent communication skills, and problem-solving abilities to tackle client configuration challenges and ensure the highest level of service.
        Job Title: Implementation Specialist E-Invoicing - Location: London- 1 day - Job Type: 6 months- Inside IR35 - Role overview - Are you looking for a role that will use your problem-solving skills, technical interests, and client communication skills to their full potential? We are seeking Implementation Specialists to join our e-invoicing Professional Services team and lead the technical implementation of our e-invoicing platform with global clients. This is the perfect role for a well-organised, collaborative, and analytical person who wants to grow their career within the software implementation space and work with a varied portfolio of multinational clients. You'll use your technical aptitude, excellent communication skills, and problem-solving abilities to tackle client configuration challenges and ensure the highest level of service.
        more
        Job Title: Implementation Specialist E-Invoicing - Location: London- 1 day - Job Type: 6 months- Inside IR35 - Role overview - Are you looking for a role that will use your problem-solving skills, technical interests, and client communication skills to their full potential? We are seeking Implementation Specialists to join our e-invoicing Professional Services team and lead the technical implementation of our e-invoicing platform with global clients. This is the perfect role for a well-organised, collaborative, and analytical person who wants to grow their career within the software implementation space and work with a varied portfolio of multinational clients. You'll use your technical aptitude, excellent communication skills, and problem-solving abilities to tackle client configuration challenges and ensure the highest level of service.
        Job Title: Implementation Specialist E-Invoicing - Location: London- 1 day - Job Type: 6 months- Inside IR35 - Role overview - Are you looking for a role that will use your problem-solving skills, technical interests, and client communication skills to their full potential? We are seeking Implementation Specialists to join our e-invoicing Professional Services team and lead the technical implementation of our e-invoicing platform with global clients. This is the perfect role for a well-organised, collaborative, and analytical person who wants to grow their career within the software implementation space and work with a varied portfolio of multinational clients. You'll use your technical aptitude, excellent communication skills, and problem-solving abilities to tackle client configuration challenges and ensure the highest level of service.
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        Skills & Experience - Essential - Demonstrated experience as a Business Analyst in technology focused or IWMS/Facilities Management environments. Strong process analysis and BPMN based modelling skills. Proven ability to analyse system interfaces, data flows, and integration requirements. Understanding of IWMS platforms; experience with Planon is highly desirable. Ability to translate business needs into clear, structured, and actionable documentation. Excellent communication, stakeholder management, and facilitation skills. Key Responsibilities - Process Analysis & Requirements Gathering - Analyse existing processes within the Banks Planon IWMS, documenting current state workflows, business rules, data dependencies, and system interactions. Engage stakeholders to understand operational needs, pain points, and gaps between Planon and the suppliers IWMS.
        Skills & Experience - Essential - Demonstrated experience as a Business Analyst in technology focused or IWMS/Facilities Management environments. Strong process analysis and BPMN based modelling skills. Proven ability to analyse system interfaces, data flows, and integration requirements. Understanding of IWMS platforms; experience with Planon is highly desirable. Ability to translate business needs into clear, structured, and actionable documentation. Excellent communication, stakeholder management, and facilitation skills. Key Responsibilities - Process Analysis & Requirements Gathering - Analyse existing processes within the Banks Planon IWMS, documenting current state workflows, business rules, data dependencies, and system interactions. Engage stakeholders to understand operational needs, pain points, and gaps between Planon and the suppliers IWMS.
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        Frequently Asked Questions

        How many contract API jobs are there in Windsor?
        There are 4 contract API jobs within 20 miles of Windsor available on CWJobs right now.

        What other similar jobs are there to contract API jobs in Windsor?
        As well as contract API jobs in Windsor, you can find contract IT, Software Development, Architecture, amongst many others.