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        47 Contract API jobs in Hayes End + 20 miles

        320 exact matches jobs are outside your preferred location

        Network Telecom Transformation Architect (Fixed, Telecom, Enterprise, Cloud)

        Syntax Consultancy Limited
        West Fields, RG14
        £450 Per Day £425-£450/day (Outside IR35)
        Strategic: NaaS/NaaP enablement, TMF/MEF alignment, Service Catalogs, API exposure. * End-to-end network transformation across Fixed, IP/MPLS, SD-WAN, FTTx, and Telco Cloud domains; architecting scalable, automated, and API-driven network platforms aligned with TMF and MEF standards; * Define and implement Network-as-a-Service (NaaS) and Network-as-a-Platform (NaaP) frameworks — enabling on-demand, API-driven, and intent-based network capabilities aligned with TMF Open APIs and MEF LSO standards. * Drive transformation programs to modernize legacy OSS/BSS stacks into modular, API-exposed digital ecosystems.
        Strategic: NaaS/NaaP enablement, TMF/MEF alignment, Service Catalogs, API exposure. * End-to-end network transformation across Fixed, IP/MPLS, SD-WAN, FTTx, and Telco Cloud domains; architecting scalable, automated, and API-driven network platforms aligned with TMF and MEF standards; * Define and implement Network-as-a-Service (NaaS) and Network-as-a-Platform (NaaP) frameworks — enabling on-demand, API-driven, and intent-based network capabilities aligned with TMF Open APIs and MEF LSO standards. * Drive transformation programs to modernize legacy OSS/BSS stacks into modular, API-exposed digital ecosystems.
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        Java Full Stack Developer

        Stott & May Professional Search Limited
        GU14, Farnborough
        £247 - £297 per day
        RESTful API development
        RESTful API development
        NEW
        Job title: Lead Integration Developer - Location: London, UK - Job type: Contract (Inside IR35) About the Role As a Lead Integration Developer, you will be responsible for designing, developing, and maintaining integration solutions across various platforms, including Guidewire InsuranceSuite and other core systems. You will lead a team of developers, collaborate with stakeholders, and ensure the delivery of integration projects that meet business and technical requirements. What will you do? * Lead the design and implementation of integration solutions using APIs, web services, and messaging systems. * Collaborate with business analysts and architects to define integration requirements and strategies. * Develop and maintain integration components using technologies such as Java, REST/JSON, XML, and Enterprise Messaging Systems.
        Job title: Lead Integration Developer - Location: London, UK - Job type: Contract (Inside IR35) About the Role As a Lead Integration Developer, you will be responsible for designing, developing, and maintaining integration solutions across various platforms, including Guidewire InsuranceSuite and other core systems. You will lead a team of developers, collaborate with stakeholders, and ensure the delivery of integration projects that meet business and technical requirements. What will you do? * Lead the design and implementation of integration solutions using APIs, web services, and messaging systems. * Collaborate with business analysts and architects to define integration requirements and strategies. * Develop and maintain integration components using technologies such as Java, REST/JSON, XML, and Enterprise Messaging Systems.
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        NEW
        MERITUS are working with a large consulting organisation looking for a Senior Java Developer on a project working into a UK Central Government client. You'll play a key role in designing, coding, reviewing, and testing solutions within the Java stack, collaborating with developers, testers, and DevOps engineers. The position also involves working on automated tests, infrastructure updates, and maintaining high-quality standards across all stages of development. The role is remote with monthly visits into the London office on an initial 6 Month contract. * Design, code, review, and unit test applications using the Java stack. * Collaborate with cross-functional teams, including developers, testers, and DevOps engineers. * Support and enhance legacy systems currently in maintenance mode. * Contribute to automated testing (C#) and infrastructure improvements (Docker, Ans
        MERITUS are working with a large consulting organisation looking for a Senior Java Developer on a project working into a UK Central Government client. You'll play a key role in designing, coding, reviewing, and testing solutions within the Java stack, collaborating with developers, testers, and DevOps engineers. The position also involves working on automated tests, infrastructure updates, and maintaining high-quality standards across all stages of development. The role is remote with monthly visits into the London office on an initial 6 Month contract. * Design, code, review, and unit test applications using the Java stack. * Collaborate with cross-functional teams, including developers, testers, and DevOps engineers. * Support and enhance legacy systems currently in maintenance mode. * Contribute to automated testing (C#) and infrastructure improvements (Docker, Ans
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        Position: AI Engineer / AI Agent / Backend AI Engineer - Location: Remote - Work Type: Contract - We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems - Why join us? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
        Position: AI Engineer / AI Agent / Backend AI Engineer - Location: Remote - Work Type: Contract - We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems - Why join us? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
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        NEWFEATURED

        Workday Integration Lead

        Henderson Scott
        London
        £700 - £800 per day + Umbrella rate (inside IR35)
        Senior Workday Integrations Lead - SC Cleared - Inside IR35 Contract - Location: Hybrid (20% in London or Glasgow) | Engagement: Contract - Inside IR35 | Duration: Initial 6 Months | Clearance: SC Clearance Essential - Are you a hands-on Workday Integrations Expert with 7-10 years' experience ready to own and define the entire integration landscape for a complex Workday transformation? Our client requires a high-calibre Senior Workday Integrations Lead to establish and deliver the integrations sub-workstream from the ground up. This role is critical for technical readiness, involving the design of integration patterns that will connect Workday with crucial internal and external systems across HR, Finance, and Payroll. The Role: End-to-End Integration Strategy & Delivery - You will report directly to the Senior Technical Delivery Manager, acting as the primary authorit
        Senior Workday Integrations Lead - SC Cleared - Inside IR35 Contract - Location: Hybrid (20% in London or Glasgow) | Engagement: Contract - Inside IR35 | Duration: Initial 6 Months | Clearance: SC Clearance Essential - Are you a hands-on Workday Integrations Expert with 7-10 years' experience ready to own and define the entire integration landscape for a complex Workday transformation? Our client requires a high-calibre Senior Workday Integrations Lead to establish and deliver the integrations sub-workstream from the ground up. This role is critical for technical readiness, involving the design of integration patterns that will connect Workday with crucial internal and external systems across HR, Finance, and Payroll. The Role: End-to-End Integration Strategy & Delivery - You will report directly to the Senior Technical Delivery Manager, acting as the primary authorit
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        FEATURED
        A leading consultancy are looking for an S/4 HANA Public Cloud Solution Architect for a long term engagement. As the S/4 HANA Public Cloud Solution Architect you will be working within the Architecture team to provide Architect services to the organisation's member across the world. Roles & Responsibilities * Analyse business requirements: Work with stakeholders to define and align business objectives with cloud migration goals. Act as a bridge between the business problem and the technical solution. * Design the solution architecture: Create a high-level technical blueprint, or solution architecture, to meet customer needs. This includes defining components and how data will flow between systems. * Plan for extensibility and integration: Design extensions and integrations using the SAP Business Technology Platform (SAP BTP) and APIs.
        A leading consultancy are looking for an S/4 HANA Public Cloud Solution Architect for a long term engagement. As the S/4 HANA Public Cloud Solution Architect you will be working within the Architecture team to provide Architect services to the organisation's member across the world. Roles & Responsibilities * Analyse business requirements: Work with stakeholders to define and align business objectives with cloud migration goals. Act as a bridge between the business problem and the technical solution. * Design the solution architecture: Create a high-level technical blueprint, or solution architecture, to meet customer needs. This includes defining components and how data will flow between systems. * Plan for extensibility and integration: Design extensions and integrations using the SAP Business Technology Platform (SAP BTP) and APIs.
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        NEW

        Sr. Network Engineer (Juniper Mist)

        IO Associates
        AL7, Welwyn Garden City
        £450 - £500 per day + Outside IR35
        Senior Network Engineer - Juniper Mist & AI Specialist - Location: Welwyn Garden City, UK () Type: 6-Month Outside IR35 Contract - Rate: £500 per day - Experience: 7+ years - Join a global technology solutions partner that excels in delivering enterprise-level digital transformation and workflow automation across industries. Renowned for driving operational excellence through advanced IT service management and system integration, this organization partners with clients to enhance performance, streamline processes, and accelerate innovation through cutting-edge cloud and automation platforms. Step into a role where cutting-edge AI meets enterprise networking excellence. We're seeking a seasoned Senior Network Engineer with deep Juniper expertise and a passion for AI-driven network optimisation. This is your chance to shape next-gen connectivity using Mist AI to deliver
        Senior Network Engineer - Juniper Mist & AI Specialist - Location: Welwyn Garden City, UK () Type: 6-Month Outside IR35 Contract - Rate: £500 per day - Experience: 7+ years - Join a global technology solutions partner that excels in delivering enterprise-level digital transformation and workflow automation across industries. Renowned for driving operational excellence through advanced IT service management and system integration, this organization partners with clients to enhance performance, streamline processes, and accelerate innovation through cutting-edge cloud and automation platforms. Step into a role where cutting-edge AI meets enterprise networking excellence. We're seeking a seasoned Senior Network Engineer with deep Juniper expertise and a passion for AI-driven network optimisation. This is your chance to shape next-gen connectivity using Mist AI to deliver
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        NEWFEATURED
        Job title: Digital Developer - Location: London, UK - Job type: Contract (Inside IR35) About the Role You will be responsible for building and customizing digital experiences. This role is ideal for developers who are enthusiastic about modern web technologies, insurance transformation, and agile delivery. What will you do? * Develop and customize digital insurance applications using Guidewire JDP, React.js, and Figma-integrated design systems. In some cases, development may be custom built, using common front-end frameworks like React.js, Angular, or Vue.js. * Build and maintain reusable components and micro frontends for Guidewires CustomerEngage and EnterpriseEngage portals, as well as other custom or third-party digital platforms. * Integrate digital frontends with Guidewire PolicyCenter, BillingCenter, and ClaimCenter via Cloud APIs and GW Integration Gateway.
        Job title: Digital Developer - Location: London, UK - Job type: Contract (Inside IR35) About the Role You will be responsible for building and customizing digital experiences. This role is ideal for developers who are enthusiastic about modern web technologies, insurance transformation, and agile delivery. What will you do? * Develop and customize digital insurance applications using Guidewire JDP, React.js, and Figma-integrated design systems. In some cases, development may be custom built, using common front-end frameworks like React.js, Angular, or Vue.js. * Build and maintain reusable components and micro frontends for Guidewires CustomerEngage and EnterpriseEngage portals, as well as other custom or third-party digital platforms. * Integrate digital frontends with Guidewire PolicyCenter, BillingCenter, and ClaimCenter via Cloud APIs and GW Integration Gateway.
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        NEW

        Senior Technical Business Analyst

        Hays
        London
        £650.0 - £800.0 per annum + £700 - £750/day inside via Umbrella
        Your new company - We are currently partnered exclusively with a financial services institution to appoint a Senior Technical Business Analyst to an initial 6-month contract. Working in the Listed Derivatives area of the business, if you're an experienced technical BA with a strong understanding of US Treasury and interest rate futures/futures as a whole, then we want to hear from you. Contract Length: 6-months + potential extension - Start Date: ASAP - Rate: £700 - £750/day inside via Umbrella - Working Arrangements: Hybrid - Your new role and what you'll need to succeed - Working closely with IT, development, and the operations test team, your role as the Senior Technical BA will act as the bridge between IT and the business, translating business needs into technical requirements and ensuring aligned communication across complex technical projects.
        Your new company - We are currently partnered exclusively with a financial services institution to appoint a Senior Technical Business Analyst to an initial 6-month contract. Working in the Listed Derivatives area of the business, if you're an experienced technical BA with a strong understanding of US Treasury and interest rate futures/futures as a whole, then we want to hear from you. Contract Length: 6-months + potential extension - Start Date: ASAP - Rate: £700 - £750/day inside via Umbrella - Working Arrangements: Hybrid - Your new role and what you'll need to succeed - Working closely with IT, development, and the operations test team, your role as the Senior Technical BA will act as the bridge between IT and the business, translating business needs into technical requirements and ensuring aligned communication across complex technical projects.
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        NEW

        ESRI GIS Subject Matter Expert (SME)

        Stackstudio Digital Ltd.
        RG40, Wokingham
        From £400 to £450 per day
        Role/Job Title: ESRI GIS Subject Matter Expert (SME) Work Location: Wokingham - If Hybrid, Days Required in Office: 3 days a week - The Role - We are seeking an experienced ESRI GIS Subject Matter Expert (SME) to lead the design, implementation, and optimization of a scalable GIS platform that supports strategic spatial energy planning. The platform will enable environmental impact assessments, economic modelling, and the integration of community preferences. The SME will be responsible for consolidating and migrating diverse spatial datasets into a unified system, ensuring data accuracy, quality, and accessibility, while supporting secure, role-based access, automation, and interoperability with internal and external systems. Your Responsibilities - Platform Design & Implementation * Architect and deploy a scalable ESRI-based GIS platform (ArcGIS Enterprise, ArcGIS O
        Role/Job Title: ESRI GIS Subject Matter Expert (SME) Work Location: Wokingham - If Hybrid, Days Required in Office: 3 days a week - The Role - We are seeking an experienced ESRI GIS Subject Matter Expert (SME) to lead the design, implementation, and optimization of a scalable GIS platform that supports strategic spatial energy planning. The platform will enable environmental impact assessments, economic modelling, and the integration of community preferences. The SME will be responsible for consolidating and migrating diverse spatial datasets into a unified system, ensuring data accuracy, quality, and accessibility, while supporting secure, role-based access, automation, and interoperability with internal and external systems. Your Responsibilities - Platform Design & Implementation * Architect and deploy a scalable ESRI-based GIS platform (ArcGIS Enterprise, ArcGIS O
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        NEW

        Pen Tester

        Infoplus Technologies UK Ltd
        Reading, Berkshire
        From £400 to £450 per day
        Role/Job title - Work Location - TCS-Reading - Role type - Permanent/Fixed Term/ Contracting - Contract - Mode of working Hybrid /office based - Hybrid - If Hybrid, how many days are required in office? 3 - Number of positions - 1 - Duration of assignment - 06 Months - Any other working conditions - travel/on call/shifts - To be published on job boards from below onwards - The Role - Were looking for Security Consultant / Senior Security Consultant with expertise in penetration testing. As part of our Cyber Security team, you shall perform penetration testing which includes internet, intranet, wireless, web application, social engineering and physical penetration testing. You shall also perform in-depth analysis of penetration testing results and create report that describes findings, exploitation procedures, risks and recommendations. Your responsibilities:(Up to 10,
        Role/Job title - Work Location - TCS-Reading - Role type - Permanent/Fixed Term/ Contracting - Contract - Mode of working Hybrid /office based - Hybrid - If Hybrid, how many days are required in office? 3 - Number of positions - 1 - Duration of assignment - 06 Months - Any other working conditions - travel/on call/shifts - To be published on job boards from below onwards - The Role - Were looking for Security Consultant / Senior Security Consultant with expertise in penetration testing. As part of our Cyber Security team, you shall perform penetration testing which includes internet, intranet, wireless, web application, social engineering and physical penetration testing. You shall also perform in-depth analysis of penetration testing results and create report that describes findings, exploitation procedures, risks and recommendations. Your responsibilities:(Up to 10,
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        NEW

        ServiceNow Architect

        Syntax Consultancy Ltd
        West Fields, RG14
        £500 - £550 Per Day Outside IR35
        6 Month Contract - Newbury/Reading (Hybrid) £500-£550/day (Outside IR35) TSOM (Telecom Service & Operations Management) project experience with ITSM i.e other modules (TSOM, ITOM, ITAM, HRSD, CSM, GRC, SecOps). A chance to work with a global IT Consultancy on a ServiceNow project for an external client. Hybrid working - working 2-3 days/week remotely from home (WFH) + 2-3 days/week from the office in either Newbury or Reading (depending on your preference). Paying up to £550/day (Outside IR35). Start ASAP ideally in October/November 2025. * Experienced needed TSOM (Telecom Service & Operations Management) implementation project toLead the design and implementation of ServiceNow modules, including ITSM, ITOM, ITAM, HRSD, CSM, GRC, SecOps and custom applications. * Strong experience ServiceNow ITSM and other modules i.e (TSOM, ITOM, ITAM, HRSD, CSM, GRC, SecOps).
        6 Month Contract - Newbury/Reading (Hybrid) £500-£550/day (Outside IR35) TSOM (Telecom Service & Operations Management) project experience with ITSM i.e other modules (TSOM, ITOM, ITAM, HRSD, CSM, GRC, SecOps). A chance to work with a global IT Consultancy on a ServiceNow project for an external client. Hybrid working - working 2-3 days/week remotely from home (WFH) + 2-3 days/week from the office in either Newbury or Reading (depending on your preference). Paying up to £550/day (Outside IR35). Start ASAP ideally in October/November 2025. * Experienced needed TSOM (Telecom Service & Operations Management) implementation project toLead the design and implementation of ServiceNow modules, including ITSM, ITOM, ITAM, HRSD, CSM, GRC, SecOps and custom applications. * Strong experience ServiceNow ITSM and other modules i.e (TSOM, ITOM, ITAM, HRSD, CSM, GRC, SecOps).
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        Location: UK - Rate: £400.00 Outside IR35 - We are seeking a dedicated and technically proficient AI Prompt Engineer to spearhead the development and optimisation of prompts for advanced platforms such as DealCloud, Filament Sifter, and Capsa. The ideal candidate will possess hands-on experience with generative AI technologies, leveraging their skills to significantly enhance user interactions and outcomes. This role involves close collaboration with leading AI vendors to ensure optimal prompt performance and foster innovation. In addition to prompt engineering, the successful candidate will play a vital role in supporting chatbot development and integrating AI-driven insights into enterprise workflows and interactive dashboards, thereby driving efficiency and improving decision-making processes across the organisation.
        Location: UK - Rate: £400.00 Outside IR35 - We are seeking a dedicated and technically proficient AI Prompt Engineer to spearhead the development and optimisation of prompts for advanced platforms such as DealCloud, Filament Sifter, and Capsa. The ideal candidate will possess hands-on experience with generative AI technologies, leveraging their skills to significantly enhance user interactions and outcomes. This role involves close collaboration with leading AI vendors to ensure optimal prompt performance and foster innovation. In addition to prompt engineering, the successful candidate will play a vital role in supporting chatbot development and integrating AI-driven insights into enterprise workflows and interactive dashboards, thereby driving efficiency and improving decision-making processes across the organisation.
        more
        Location: Farnborough - Duration: ASAP - 31/03/2026 - Work setup: 3 days onsite * Strong proficiency in Core Java and its associated libraries and features. * In-depth experience with popular Java frameworks such as Spring Boot, Spring MVC, and Hibernate. * Solid understanding of front-end technologies, particularly React and Angular frameworks. * Minimum of 3 years of hands-on experience with React 16+. * Proficient in relational databases, SQL, and ORM technologies like JPA. * Experience with version control systems (e.g., GitHub), Agile/Scrum methodologies, and CI/CD practices. * Familiarity with microservices architecture, RESTful APIs, and other modern architectural patterns. * Strong analytical skills to troubleshoot complex issues and propose innovative solutions. * Excellent communication skills for effective collaboration with cross-functional teams and stake
        Location: Farnborough - Duration: ASAP - 31/03/2026 - Work setup: 3 days onsite * Strong proficiency in Core Java and its associated libraries and features. * In-depth experience with popular Java frameworks such as Spring Boot, Spring MVC, and Hibernate. * Solid understanding of front-end technologies, particularly React and Angular frameworks. * Minimum of 3 years of hands-on experience with React 16+. * Proficient in relational databases, SQL, and ORM technologies like JPA. * Experience with version control systems (e.g., GitHub), Agile/Scrum methodologies, and CI/CD practices. * Familiarity with microservices architecture, RESTful APIs, and other modern architectural patterns. * Strong analytical skills to troubleshoot complex issues and propose innovative solutions. * Excellent communication skills for effective collaboration with cross-functional teams and stake
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        FEATURED
        ServiceNow SME / Implementation Specialist - Role: ServiceNow Implementation Specialist / SME - Rate: £450 per day (Outside IR35) Location: Remote (UK-based candidates) Duration: 6 months - We're seeking an experienced ServiceNow SME to lead and support the implementation and integration of ServiceNow across enterprise IT environments. The ideal candidate will have hands-on expertise configuring ServiceNow modules and integrating the platform with existing IT systems and tools. * Lead ServiceNow implementation and configuration projects * Integrate ServiceNow with core IT systems and external applications * Define and deliver best practice solutions aligned with ITIL processes * Collaborate with internal stakeholders to optimise workflows and automation * Provide technical guidance and SME-level support throughout the project lifecycle
        ServiceNow SME / Implementation Specialist - Role: ServiceNow Implementation Specialist / SME - Rate: £450 per day (Outside IR35) Location: Remote (UK-based candidates) Duration: 6 months - We're seeking an experienced ServiceNow SME to lead and support the implementation and integration of ServiceNow across enterprise IT environments. The ideal candidate will have hands-on expertise configuring ServiceNow modules and integrating the platform with existing IT systems and tools. * Lead ServiceNow implementation and configuration projects * Integrate ServiceNow with core IT systems and external applications * Define and deliver best practice solutions aligned with ITIL processes * Collaborate with internal stakeholders to optimise workflows and automation * Provide technical guidance and SME-level support throughout the project lifecycle
        more
        FEATURED

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        Frequently Asked Questions

        How many contract API jobs are there in Hayes End?
        There are 47 contract API jobs within 20 miles of Hayes End available on CWJobs right now.

        Where in Hayes End are these contract jobs?
        You can find contract jobs in Southwark, West Fields, The Borough.

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