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23 Contract API jobs in Charing Cross, Central London + 20 miles
91 exact matches jobs are outside your preferred location
Awareness of Dataverse API
Awareness of Dataverse API
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• API Knowledge: Experience with APIs, web services, and data exchange formats.
• API Knowledge: Experience with APIs, web services, and data exchange formats.
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API Knowledge: Experience with APIs, web services, and data exchange formats.
API Knowledge: Experience with APIs, web services, and data exchange formats.
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Java Full Stack Developer
Java Full Stack Developer
Stott & May Professional Search Limited
GU14, Farnborough
£247 - £297 per day
RESTful API development
RESTful API development
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Solid understanding of authentication flows and API integrations
Solid understanding of authentication flows and API integrations
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Architect and design enterprise-level integration solutions, defining API-led connectivity, patterns, and specifications. * Proven expertise in MuleSoft Anypoint Platform (including Anypoint Studio, Flow Design, and API Manager). * Strong knowledge of API-led connectivity and integration patterns (REST, SOAP).
Architect and design enterprise-level integration solutions, defining API-led connectivity, patterns, and specifications. * Proven expertise in MuleSoft Anypoint Platform (including Anypoint Studio, Flow Design, and API Manager). * Strong knowledge of API-led connectivity and integration patterns (REST, SOAP).
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RESTful API development experience.
RESTful API development experience.
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Strong understanding of API integration and data flow between backend and frontend.
Strong understanding of API integration and data flow between backend and frontend.
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Maintain internal API and code documentation. * Strong experience with React, TypeScript, Java, Spring Boot, and RESTful API development.
Maintain internal API and code documentation. * Strong experience with React, TypeScript, Java, Spring Boot, and RESTful API development.
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Knowledge of Microsoft Graph API, Azure AI Foundry, and Copilot integration is a strong plus.
Knowledge of Microsoft Graph API, Azure AI Foundry, and Copilot integration is a strong plus.
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Understanding of API authentication, rate limits, and error handling.
Understanding of API authentication, rate limits, and error handling.
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Senior Azure AD DevOps Engineer
Senior Azure AD DevOps Engineer
Stott & May Professional Search Limited
RG1, Reading
£400 - £425 per day
Hands-on experience with Azure API Management, Azure Functions, Web Apps, Azure Blob Storage, Application Insights, and Azure Monitor.
Hands-on experience with Azure API Management, Azure Functions, Web Apps, Azure Blob Storage, Application Insights, and Azure Monitor.
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Large Language API's (from 2021) * Assisting with the maintenance and iteration of a FastAPI-based web API hosted on AWS.
Large Language API's (from 2021) * Assisting with the maintenance and iteration of a FastAPI-based web API hosted on AWS.
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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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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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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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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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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.
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Senior Technical Business Analyst
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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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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ESRI GIS Subject Matter Expert (SME)
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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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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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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QA Engineer - GxP experience needed - Outside IR35 - Remote - 6 months
QA Engineer - GxP experience needed - Outside IR35 - Remote - 6 months
Exalto Consulting ltd
London
market rate outside IR35
QA Engineer - GxP experience - SaaS - AWS - Outside IR35 - Remote - 6 months - Exalto consulting are currently recruiting for a contract QA Engineer with hands-on experience testing SaaS applications. This is remote working, outside IR35 and initially 6 months. The ideal candidate will contribute to test planning, design, execution, and documentation across frontend and backend systems, ensuring quality, compliance, and reliability in a multi-tenant AWS environment, following GxP - In order to be considered for this role you will need - * 5+ years of experience as a QA Engineer, preferably within health tech/pharma or highly regulated environments or other GxP-regulated SaaS environments. * Understanding of multi-tenant SaaS architecture and AWS core services (EC2, S3, RDS, IAM, Lambda). * Experience testing frontend and backend applications and APIs.
QA Engineer - GxP experience - SaaS - AWS - Outside IR35 - Remote - 6 months - Exalto consulting are currently recruiting for a contract QA Engineer with hands-on experience testing SaaS applications. This is remote working, outside IR35 and initially 6 months. The ideal candidate will contribute to test planning, design, execution, and documentation across frontend and backend systems, ensuring quality, compliance, and reliability in a multi-tenant AWS environment, following GxP - In order to be considered for this role you will need - * 5+ years of experience as a QA Engineer, preferably within health tech/pharma or highly regulated environments or other GxP-regulated SaaS environments. * Understanding of multi-tenant SaaS architecture and AWS core services (EC2, S3, RDS, IAM, Lambda). * Experience testing frontend and backend applications and APIs.
Related Jobs
Locations
- The City, City (EC4)
- West Fields
- Charing Cross
- Euston
- Frimley
- Holborn
- Ireland
- The City, City (EC2)
- The City, City (EC3)
- Waterloo
- City of London
- Reading
- Central London
- West End
- Camberley
- Farnborough
- Newbury
- North West London
- Brighton
- Cambridge
- London
- Berkshire
- Surrey
- Hampshire
- Bedfordshire
- Buckinghamshire
- Cambridgeshire
- East Sussex
- South East
- East Anglia