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27 Contract API jobs in South Kensington (SW7) + 10 miles
450 exact matches jobs are outside your preferred location
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Developer - Remote - FTC
Developer - Remote - FTC
Data Careers
OX5, Kidlington, OX5 1RA
Up to £40000 per annum + excellent pension and other Emp. Bens.
XSLT, API's. It's a fascinating role developing and enhancing a Police Forces Applications, (as well as the API's so that they integrate with other the Police Force applications), that deliver critical services to the wider community. * Good API / writing API Integrations, (XSLT, XML etc.)
XSLT, API's. It's a fascinating role developing and enhancing a Police Forces Applications, (as well as the API's so that they integrate with other the Police Force applications), that deliver critical services to the wider community. * Good API / writing API Integrations, (XSLT, XML etc.)
Integration Developer - Salesforce Education Cloud-Student Systems Implementation
Integration Developer - Salesforce Education Cloud-Student Systems Implementation
InterQuest Group (UK) Limited
London
£400 - 500 per day
Excellent skills in designing and delivering integrations using Microsoft Azure PaaS (Functions, Logic Apps, API Management, Service Bus,) * Expertise in integration strategy, API management, and canonical data models.
Excellent skills in designing and delivering integrations using Microsoft Azure PaaS (Functions, Logic Apps, API Management, Service Bus,) * Expertise in integration strategy, API management, and canonical data models.
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Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
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Overview - We are seeking an experienced PHP developer to join our development team. The role involves building and maintaining web applications that integrate with our core quote and sales engines. The successful candidate will have strong PHP and MySQL expertise, with the ability to write efficient, well-structured code without over-reliance on heavy frameworks. Key Responsibilities - Develop and maintain PHP applications that integrate with our back-end systems. Design and optimise MySQL databases, including complex queries and schema design for performance and scalability. Implement APIs for third-party website integration. Work across both back-end and front-end as needed (HTML, CSS, JavaScript). Ensure code quality, efficiency, and security best practices. Collaborate with team members to deliver reliable and maintainable solutions. Essential Skills & Experience
Overview - We are seeking an experienced PHP developer to join our development team. The role involves building and maintaining web applications that integrate with our core quote and sales engines. The successful candidate will have strong PHP and MySQL expertise, with the ability to write efficient, well-structured code without over-reliance on heavy frameworks. Key Responsibilities - Develop and maintain PHP applications that integrate with our back-end systems. Design and optimise MySQL databases, including complex queries and schema design for performance and scalability. Implement APIs for third-party website integration. Work across both back-end and front-end as needed (HTML, CSS, JavaScript). Ensure code quality, efficiency, and security best practices. Collaborate with team members to deliver reliable and maintainable solutions. Essential Skills & Experience
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The Azure DevOps Engineer will design, build, and maintain CI/CD pipelines to support the API backbone and other digital initiatives. * Contribute to the ongoing development of a scalable, resilient digital API infrastructure. * Familiarity with API-driven architectures, microservices, and integration patterns.
The Azure DevOps Engineer will design, build, and maintain CI/CD pipelines to support the API backbone and other digital initiatives. * Contribute to the ongoing development of a scalable, resilient digital API infrastructure. * Familiarity with API-driven architectures, microservices, and integration patterns.
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Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid - Key Responsibilities - o Historical index back-testing - o Daily pricing and index computation - o Weighting and rebalancing logic - o Attribution and decomposition analytics * Build robust APIs using FastAPI or Flask * Collaborate directly with business users to gather requirements and iterate quickly * Implement testing, versioning, and data validation processes * Ensure integration with internal data sources and reporting tools - Required Skills * 5+ years of Python development experience, ideally in financial services or commodities * Strong proficiency in Pandas, NumPy, and time-series data manipulation * Proven experience with FastAPI or Flask * Familiarity with large datasets and real-time data pipelines * Excellent debugging, profiling, and performance optimization
Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid - Key Responsibilities - o Historical index back-testing - o Daily pricing and index computation - o Weighting and rebalancing logic - o Attribution and decomposition analytics * Build robust APIs using FastAPI or Flask * Collaborate directly with business users to gather requirements and iterate quickly * Implement testing, versioning, and data validation processes * Ensure integration with internal data sources and reporting tools - Required Skills * 5+ years of Python development experience, ideally in financial services or commodities * Strong proficiency in Pandas, NumPy, and time-series data manipulation * Proven experience with FastAPI or Flask * Familiarity with large datasets and real-time data pipelines * Excellent debugging, profiling, and performance optimization
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Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid - Key Responsibilities - o Historical index back-testing - o Daily pricing and index computation - o Weighting and rebalancing logic - o Attribution and decomposition analytics * Build robust APIs using FastAPI or Flask * Collaborate directly with business users to gather requirements and iterate quickly * Implement testing, versioning, and data validation processes * Ensure integration with internal data sources and reporting tools - Required Skills * 5+ years of Python development experience, ideally in financial services or commodities * Strong proficiency in Pandas, NumPy, and time-series data manipulation * Proven experience with FastAPI or Flask * Familiarity with large datasets and real-time data pipelines * Excellent debugging, profiling, and performance optimization
Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid - Key Responsibilities - o Historical index back-testing - o Daily pricing and index computation - o Weighting and rebalancing logic - o Attribution and decomposition analytics * Build robust APIs using FastAPI or Flask * Collaborate directly with business users to gather requirements and iterate quickly * Implement testing, versioning, and data validation processes * Ensure integration with internal data sources and reporting tools - Required Skills * 5+ years of Python development experience, ideally in financial services or commodities * Strong proficiency in Pandas, NumPy, and time-series data manipulation * Proven experience with FastAPI or Flask * Familiarity with large datasets and real-time data pipelines * Excellent debugging, profiling, and performance optimization
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API Integration Experience:Proven track record of consuming and building APIs for data exchange * Strong understanding of API development and integration (REST, GraphQL)
API Integration Experience:Proven track record of consuming and building APIs for data exchange * Strong understanding of API development and integration (REST, GraphQL)
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Job Title: Salesforce Vlocity Developer - Location: Windsor, UK (Hybrid 1 day per week onsite) Contract Duration: 6 Months - Day Rate: £500 Inside IR35 - About the Role - We are looking for an experienced Salesforce Vlocity Developer to join a major business unit on a 6-month contract. This is a hybrid role requiring weekly onsite presence in Windsor, offering an exciting opportunity to work on cutting-edge Salesforce solutions within a collaborative team environment. Key Responsibilities * Design and develop custom Vlocity solutions on the Salesforce platform, including CPQ, CLM, and OmniStudio. * Translate business and product requirements into technical specifications. * Build and maintain Vlocity data models, including objects, fields, and relationships. * Develop custom Apex classes, triggers, and Lightning Web Components.
Job Title: Salesforce Vlocity Developer - Location: Windsor, UK (Hybrid 1 day per week onsite) Contract Duration: 6 Months - Day Rate: £500 Inside IR35 - About the Role - We are looking for an experienced Salesforce Vlocity Developer to join a major business unit on a 6-month contract. This is a hybrid role requiring weekly onsite presence in Windsor, offering an exciting opportunity to work on cutting-edge Salesforce solutions within a collaborative team environment. Key Responsibilities * Design and develop custom Vlocity solutions on the Salesforce platform, including CPQ, CLM, and OmniStudio. * Translate business and product requirements into technical specifications. * Build and maintain Vlocity data models, including objects, fields, and relationships. * Develop custom Apex classes, triggers, and Lightning Web Components.
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Tester-Salesforce- Azure Integration-Salesforce-Cloud
Tester-Salesforce- Azure Integration-Salesforce-Cloud
InterQuest Group (UK) Limited
London
£400 per day
Strong hands-on knowledge of Azure integration services (Logic Apps, Azure Functions, Service Bus, API * Experience with REST API testing, Swagger/OpenAPI validation, and API test automation. * Experience with contract testing frameworks (Pact) and API mocking/stubbing approaches.
Strong hands-on knowledge of Azure integration services (Logic Apps, Azure Functions, Service Bus, API * Experience with REST API testing, Swagger/OpenAPI validation, and API test automation. * Experience with contract testing frameworks (Pact) and API mocking/stubbing approaches.
Solution Architect - Location: Windsor, UK (Hybrid 1 day per week onsite) Type: Contract (6 months) | Rate: £500/day (Inside IR35) Start Date: 15 September 2025 - About the Role - Our client, a leading global organization, is seeking an experienced Solution Architect to play a key role in shaping and delivering scalable, secure, and efficient solutions within a large-scale transformation programme. You will be responsible for defining technology roadmaps, ensuring architectural best practices, and collaborating with stakeholders across business and IT functions. This is a hands-on, strategic role requiring strong architecture expertise, particularly in AWS integration, application hosting, governance, and security roadmaps, with the ability to influence at senior levels and guide implementation teams. Key Responsibilities
Solution Architect - Location: Windsor, UK (Hybrid 1 day per week onsite) Type: Contract (6 months) | Rate: £500/day (Inside IR35) Start Date: 15 September 2025 - About the Role - Our client, a leading global organization, is seeking an experienced Solution Architect to play a key role in shaping and delivering scalable, secure, and efficient solutions within a large-scale transformation programme. You will be responsible for defining technology roadmaps, ensuring architectural best practices, and collaborating with stakeholders across business and IT functions. This is a hands-on, strategic role requiring strong architecture expertise, particularly in AWS integration, application hosting, governance, and security roadmaps, with the ability to influence at senior levels and guide implementation teams. Key Responsibilities
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Proficiency in JavaScript, Glide API, and ServiceNow development tools.
Proficiency in JavaScript, Glide API, and ServiceNow development tools.
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Azure Analytics & Integration stack (e.g., Databricks, Synapse, Logic Apps, API Management) o API frameworks (SOAP, REST, WebSocket)
Azure Analytics & Integration stack (e.g., Databricks, Synapse, Logic Apps, API Management) o API frameworks (SOAP, REST, WebSocket)
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NEW CONTRACT iOS DEVELOPER ROLE AVAILABLE - REMOTE (UK/EU-BASED) * Outside IR35 * 9-12 Month Initial Contract | Start ASAP | Likely Extension - A new contract opportunity for a skilled iOS Developer to build and deploy AI-powered fintech mobile apps. You will work on secure, high-quality solutions while integrating machine learning features such as NLP and recommendation systems. * Develop and deploy iOS apps (Swift / Objective-C, iOS SDK, App Store). * Integrate RESTful APIs and backend services into iOS applications. * Embed AI/ML features (NLP, recommendation engines) into mobile workflows. * Deliver compliant and secure fintech solutions (GDPR, OAuth, encryption). * Experience managing projects end-to-end (greenfield exp.) * Strong expertise in iOS development (Swift / Objective-C, iOS SDK, App Store deployment)
NEW CONTRACT iOS DEVELOPER ROLE AVAILABLE - REMOTE (UK/EU-BASED) * Outside IR35 * 9-12 Month Initial Contract | Start ASAP | Likely Extension - A new contract opportunity for a skilled iOS Developer to build and deploy AI-powered fintech mobile apps. You will work on secure, high-quality solutions while integrating machine learning features such as NLP and recommendation systems. * Develop and deploy iOS apps (Swift / Objective-C, iOS SDK, App Store). * Integrate RESTful APIs and backend services into iOS applications. * Embed AI/ML features (NLP, recommendation engines) into mobile workflows. * Deliver compliant and secure fintech solutions (GDPR, OAuth, encryption). * Experience managing projects end-to-end (greenfield exp.) * Strong expertise in iOS development (Swift / Objective-C, iOS SDK, App Store deployment)
FEATURED
Systems Integration & API Work
Systems Integration & API Work
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Job Description Workday Integration Consultant - Key Responsibilities - Design, develop, and maintain Workday integrations including Core Connectors, EIBs, Studio, and custom solutions. Leverage Workday HCM core knowledge to deliver effective integration solutions. Perform XML/XSLT transformations and handle various file formats (CSV, XML, JSON, etc.). Work with APIs, Web Services (SOAP/REST), and file transfer protocols (SFTP/FTP). Ensure accuracy, compliance, and performance of integrations across HR, Payroll, Benefits, and Finance systems. Collaborate with business stakeholders to translate requirements and process logic into actionable code and functional solutions. Troubleshoot, optimize, and support integrations in production environments. Plan, prioritize, and deliver assigned work within agreed timelines. Required Skills & Qualifications
Job Description Workday Integration Consultant - Key Responsibilities - Design, develop, and maintain Workday integrations including Core Connectors, EIBs, Studio, and custom solutions. Leverage Workday HCM core knowledge to deliver effective integration solutions. Perform XML/XSLT transformations and handle various file formats (CSV, XML, JSON, etc.). Work with APIs, Web Services (SOAP/REST), and file transfer protocols (SFTP/FTP). Ensure accuracy, compliance, and performance of integrations across HR, Payroll, Benefits, and Finance systems. Collaborate with business stakeholders to translate requirements and process logic into actionable code and functional solutions. Troubleshoot, optimize, and support integrations in production environments. Plan, prioritize, and deliver assigned work within agreed timelines. Required Skills & Qualifications
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Lead the design and development of automated UI and API testing solutions using SpecFlow and Playwright, written in C# .NET.
Lead the design and development of automated UI and API testing solutions using SpecFlow and Playwright, written in C# .NET.
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PowerBI Specialist (Contract) | £350-£450 p/day (Outside IR35) | 3 Months (strong possibility of extension) | ASAP - We're hiring on behalf of a fast-growing SaaS company that's looking for an experienced Power BI Specialist to take ownership of their reporting environment. This is a fully remote contract role, starting immediately. The client has a strong BI foundation in place, but they're now looking for someone who can streamline reporting, reduce maintenance, and optimise their use of Power BI at scale. Right now, customer-specific reports are managed individually (e.g. 45+ reports needing updates when a change is made). They want to consolidate, automate, and improve efficiency across their reporting suite. This is not a 'start from scratch' build - instead, you'll be reviewing what's already in place, identifying improvements, and implementing changes to drive
PowerBI Specialist (Contract) | £350-£450 p/day (Outside IR35) | 3 Months (strong possibility of extension) | ASAP - We're hiring on behalf of a fast-growing SaaS company that's looking for an experienced Power BI Specialist to take ownership of their reporting environment. This is a fully remote contract role, starting immediately. The client has a strong BI foundation in place, but they're now looking for someone who can streamline reporting, reduce maintenance, and optimise their use of Power BI at scale. Right now, customer-specific reports are managed individually (e.g. 45+ reports needing updates when a change is made). They want to consolidate, automate, and improve efficiency across their reporting suite. This is not a 'start from scratch' build - instead, you'll be reviewing what's already in place, identifying improvements, and implementing changes to drive
FEATURED
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Rate - £500 per day Inside IR35 - Duration - 1 month initial - Location - Remote with occasional visits into London - We are looking for an experienced Siebel Developer to join our client's technology team and play a pivotal role in the design, development and migration of Siebel CRM solutions. You will be responsible for enhancing existing systems, delivering robust integrations with external applications and supporting large-scale migration projects as part of digital transformation initiatives. * Design, configure and develop Siebel CRM applications to meet evolving business requirements. * Support migration projects, including data migration, environment upgrades and platform transitions. * Deliver robust integrations between Siebel and third-party systems using Siebel EAI, web services, APIs and middleware.
Rate - £500 per day Inside IR35 - Duration - 1 month initial - Location - Remote with occasional visits into London - We are looking for an experienced Siebel Developer to join our client's technology team and play a pivotal role in the design, development and migration of Siebel CRM solutions. You will be responsible for enhancing existing systems, delivering robust integrations with external applications and supporting large-scale migration projects as part of digital transformation initiatives. * Design, configure and develop Siebel CRM applications to meet evolving business requirements. * Support migration projects, including data migration, environment upgrades and platform transitions. * Deliver robust integrations between Siebel and third-party systems using Siebel EAI, web services, APIs and middleware.
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Excellent development skills, with a depth of experience including C#, Java (Spring Boot, JPA/Hibernate), REST API's, observability and monitoring, queue technologies and security.
Excellent development skills, with a depth of experience including C#, Java (Spring Boot, JPA/Hibernate), REST API's, observability and monitoring, queue technologies and security.
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We're looking for an experienced Engineering Manager to oversee the technical migration of a Product Information Management (PIM) system - namely STIBO STEP - from an on-premise setup to a SaaS solution. This role requires close collaboration with internal product and engineering teams, as well as with external partners. * 10+ years in software engineering and delivery, with at least 5 years in leadership, principal, or managerial roles. * Strong expertise in PIM/MDM platforms, with hands-on experience in STIBO STEP essential. * Proven track record migrating enterprise applications to SaaS, ideally within large-scale, complex environments. * Languages: Java 17+ (Java 21 preferred) * Frameworks: Micronaut (preferred), Spring Boot * Testing: JUnit, Mockito * Build Tools: Gradle * Data & Messaging: Kafka, MongoDB * APIs: GraphQL Federation, REST
We're looking for an experienced Engineering Manager to oversee the technical migration of a Product Information Management (PIM) system - namely STIBO STEP - from an on-premise setup to a SaaS solution. This role requires close collaboration with internal product and engineering teams, as well as with external partners. * 10+ years in software engineering and delivery, with at least 5 years in leadership, principal, or managerial roles. * Strong expertise in PIM/MDM platforms, with hands-on experience in STIBO STEP essential. * Proven track record migrating enterprise applications to SaaS, ideally within large-scale, complex environments. * Languages: Java 17+ (Java 21 preferred) * Frameworks: Micronaut (preferred), Spring Boot * Testing: JUnit, Mockito * Build Tools: Gradle * Data & Messaging: Kafka, MongoDB * APIs: GraphQL Federation, REST
Agile Project Manager, ideally with expereince of Salesforce Education Cloud, or similar SaaS platforms is required to support our London University client to deliver the implementation of Salesforce Education Cloud and associated systems. The Agile Project Manager will be tasked with leading the day-to-day management of Salesforce Education Cloud implementation, leading the Agile delivery of the Salesforce Education Cloud platform and associated initiatives (UX, AI tools, dashboards). Essential Experience * Experience of managing large-scale digital transformation or CRM/ERP implementations. * Strong understanding of delivery and integration of Salesforce (ideally Education Cloud) or similar SaaS platforms. * Experience working with multiple suppliers in a complex stakeholder environment. * Strong stakeholder management, particularly in Higher Education or similar pu
Agile Project Manager, ideally with expereince of Salesforce Education Cloud, or similar SaaS platforms is required to support our London University client to deliver the implementation of Salesforce Education Cloud and associated systems. The Agile Project Manager will be tasked with leading the day-to-day management of Salesforce Education Cloud implementation, leading the Agile delivery of the Salesforce Education Cloud platform and associated initiatives (UX, AI tools, dashboards). Essential Experience * Experience of managing large-scale digital transformation or CRM/ERP implementations. * Strong understanding of delivery and integration of Salesforce (ideally Education Cloud) or similar SaaS platforms. * Experience working with multiple suppliers in a complex stakeholder environment. * Strong stakeholder management, particularly in Higher Education or similar pu
Robert Half Technology are assisting a global market leading consultancy at the forefront of delivering enterprise-scale digital transformation projects for some of the world's most recognised brands. With a proven track record in innovation and delivery excellence, they are now seeking to recruit multiple ServiceNow Consultants on a contract basis - remote working - UK based. As a ServiceNow Consultant, you'll play a pivotal role in designing, configuring, and implementing ServiceNow solutions to meet complex business needs. Working alongside talented technical teams and senior stakeholders, you'll be part of mission-critical transformation projects spanning ITSM, HRSD, CSM, and other ServiceNow modules. Role * The ServiceNow Consultant will lead and deliver ServiceNow architecture, implementation, configuration, and customisation activities.
Robert Half Technology are assisting a global market leading consultancy at the forefront of delivering enterprise-scale digital transformation projects for some of the world's most recognised brands. With a proven track record in innovation and delivery excellence, they are now seeking to recruit multiple ServiceNow Consultants on a contract basis - remote working - UK based. As a ServiceNow Consultant, you'll play a pivotal role in designing, configuring, and implementing ServiceNow solutions to meet complex business needs. Working alongside talented technical teams and senior stakeholders, you'll be part of mission-critical transformation projects spanning ITSM, HRSD, CSM, and other ServiceNow modules. Role * The ServiceNow Consultant will lead and deliver ServiceNow architecture, implementation, configuration, and customisation activities.
My client is looking for a talentedMagento Developerwith strong backend experience to join their dynamic dev team. If you enjoy building custom ecommerce solutions, integrating complex systems, and collaborating in a supportive tech environment, this could be the role for you. This role is predominately remote, although the team meet up onsite once a month near Farringdon. There is no specific requirement to attend every month, however some flexibility would be beneficial. The Role - Youll be responsible for delivering tailored features and functionality across a variety of ecommerce projects. * Developing and maintaining bespoke Magento functionality. * Working with the development team to ensure new code aligns with the Magento framework and delivers great performance. * Reviewing code, pull requests, and supporting peer development.
My client is looking for a talentedMagento Developerwith strong backend experience to join their dynamic dev team. If you enjoy building custom ecommerce solutions, integrating complex systems, and collaborating in a supportive tech environment, this could be the role for you. This role is predominately remote, although the team meet up onsite once a month near Farringdon. There is no specific requirement to attend every month, however some flexibility would be beneficial. The Role - Youll be responsible for delivering tailored features and functionality across a variety of ecommerce projects. * Developing and maintaining bespoke Magento functionality. * Working with the development team to ensure new code aligns with the Magento framework and delivers great performance. * Reviewing code, pull requests, and supporting peer development.
Reporting to the Global Head of Integration Platform, this leader will be responsible for leading the design and delivery for our Integration and API platforms - S/he will establish an API factory across our development centers in Greece and India and develop reusable APIs for our Digital Commercial Insurance segment and Digitally enabled Middle market and Major accounts segments - Drive purposeful thought leadership, strategy and execution for Chubbs Integration and API Platform team of over 100 engineers - Provide strategic engineering leadership, oversight, guidance and support to drive a competitive edge by leveraging cloud scale architectures and next gen technology solutions in the Integration, API and BPM space.
Reporting to the Global Head of Integration Platform, this leader will be responsible for leading the design and delivery for our Integration and API platforms - S/he will establish an API factory across our development centers in Greece and India and develop reusable APIs for our Digital Commercial Insurance segment and Digitally enabled Middle market and Major accounts segments - Drive purposeful thought leadership, strategy and execution for Chubbs Integration and API Platform team of over 100 engineers - Provide strategic engineering leadership, oversight, guidance and support to drive a competitive edge by leveraging cloud scale architectures and next gen technology solutions in the Integration, API and BPM space.