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11 Contract API jobs in City of London + 20 miles
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Strong grasp of databases (SQL/NoSQL) and API integrations
Strong grasp of databases (SQL/NoSQL) and API integrations
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Configure API connections to CRM systems and Power BI for real-time dashboards. * Experience with API integrations and data visualisation tools (Power BI preferred).
Configure API connections to CRM systems and Power BI for real-time dashboards. * Experience with API integrations and data visualisation tools (Power BI preferred).
FEATURED
Familiarity with microservices, API integration patterns and cloud concepts such as AWS.
Familiarity with microservices, API integration patterns and cloud concepts such as AWS.
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Senior Azure Developer (Azure, SDK, Node)
Senior Azure Developer (Azure, SDK, Node)
MS Talent Ltd
The City, City of London (EC2), EC2M
£400 - £450 per day, Benefits Outside IR35
Senior / Lead Azure Developer (Azure Developer, Microsoft Azure, Node.js, Microsoft SDK, Graph API) Bring a new custom application to the market! This role is for an Azure Developerwith deep experience using Microsoft SDKs, Graph API and enterprise integrations, not just front-end frameworks. As the Lead Azure Developer, you will design Azure-native architecture, build custom components, and integrate with Microsoft Graph API, Azure enterprise apps and other Microsoft SDKs. * Build custom Azure applicationsusing Microsoft SDKs and Graph API If you are a Senior Azure Developer / Lead Azure Developerwho has built custom Microsoft Azure applications using Node.js, Microsoft SDKs and Graph API, and you want a role where that experience actually matters, apply now.
Senior / Lead Azure Developer (Azure Developer, Microsoft Azure, Node.js, Microsoft SDK, Graph API) Bring a new custom application to the market! This role is for an Azure Developerwith deep experience using Microsoft SDKs, Graph API and enterprise integrations, not just front-end frameworks. As the Lead Azure Developer, you will design Azure-native architecture, build custom components, and integrate with Microsoft Graph API, Azure enterprise apps and other Microsoft SDKs. * Build custom Azure applicationsusing Microsoft SDKs and Graph API If you are a Senior Azure Developer / Lead Azure Developerwho has built custom Microsoft Azure applications using Node.js, Microsoft SDKs and Graph API, and you want a role where that experience actually matters, apply now.
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Strong background in system/API design.
Strong background in system/API design.
PREMIUM
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Senior Java Software Engineer (Urgent)
Senior Java Software Engineer (Urgent)
Morson Edge
Tower Hill, City of London (EC3), E1W 1WY
£500 - 600 per day
We are seeking an experienced Senior Java Software Engineer to join the IT team at a leading bank, supporting the delivery, maintenance, and enhancement of core systems across various business areas, including operations, compliance, transactions, and client management. This is a 6-month contract role offering an excellent day rate, ideally suited to candidates with experience in regulated environments, financial services, or government/public sector organisations. In this role, you will be an integral part of the software development lifecycle, working closely with Senior Java Developers, UI/UX teams, and Agile Transformation to architect, build, and deliver greenfield, brownfield, and integration applications. You will be expected to employ best design and development practices, solve technical challenges, and contribute to high-quality system analysis and developme
We are seeking an experienced Senior Java Software Engineer to join the IT team at a leading bank, supporting the delivery, maintenance, and enhancement of core systems across various business areas, including operations, compliance, transactions, and client management. This is a 6-month contract role offering an excellent day rate, ideally suited to candidates with experience in regulated environments, financial services, or government/public sector organisations. In this role, you will be an integral part of the software development lifecycle, working closely with Senior Java Developers, UI/UX teams, and Agile Transformation to architect, build, and deliver greenfield, brownfield, and integration applications. You will be expected to employ best design and development practices, solve technical challenges, and contribute to high-quality system analysis and developme
Contract Technical Business Analyst - ServiceNow - Outside IR35
Contract Technical Business Analyst - ServiceNow - Outside IR35
Morson Edge
The City, City of London (EC4), EC4A
£450 - 500 per day
Contract Technical Business Analyst – ServiceNow - Outside IR35 | Contract | Hybrid / Remote (UK) | Up to £500 a day - I'm seeking an experienced Technical Business Analyst with strong ServiceNow expertise to support a large-scale transformation programme within a complex enterprise environment. This is a contract role operating Outside IR35, ideal for a delivery-focused consultant who can bridge the gap between business stakeholders and technical teams. Key Responsibilities * Elicit, analyse, and document business and technical requirements across ServiceNow modules * Act as the primary interface between stakeholders, developers, architects, and ServiceNow platform teams * Translate business needs into clear functional and technical specifications (user stories, process flows, data models) * Support ServiceNow implementations, enhancements, and integrations (e.g. ITS
Contract Technical Business Analyst – ServiceNow - Outside IR35 | Contract | Hybrid / Remote (UK) | Up to £500 a day - I'm seeking an experienced Technical Business Analyst with strong ServiceNow expertise to support a large-scale transformation programme within a complex enterprise environment. This is a contract role operating Outside IR35, ideal for a delivery-focused consultant who can bridge the gap between business stakeholders and technical teams. Key Responsibilities * Elicit, analyse, and document business and technical requirements across ServiceNow modules * Act as the primary interface between stakeholders, developers, architects, and ServiceNow platform teams * Translate business needs into clear functional and technical specifications (user stories, process flows, data models) * Support ServiceNow implementations, enhancements, and integrations (e.g. ITS
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Contract Technical Business Analyst - ServiceNow - Outside IR35
Contract Technical Business Analyst - ServiceNow - Outside IR35
Morson Edge
City of London (EC1), EC4A
£450 - 500 per day
Contract Technical Business Analyst – ServiceNow - Outside IR35 | Contract | Hybrid / Remote (UK) | Up to £500 a day - I'm seeking an experienced Technical Business Analyst with strong ServiceNow expertise to support a large-scale transformation programme within a complex enterprise environment. This is a contract role operating Outside IR35, ideal for a delivery-focused consultant who can bridge the gap between business stakeholders and technical teams. Key Responsibilities * Elicit, analyse, and document business and technical requirements across ServiceNow modules * Act as the primary interface between stakeholders, developers, architects, and ServiceNow platform teams * Translate business needs into clear functional and technical specifications (user stories, process flows, data models) * Support ServiceNow implementations, enhancements, and integrations (e.g. ITS
Contract Technical Business Analyst – ServiceNow - Outside IR35 | Contract | Hybrid / Remote (UK) | Up to £500 a day - I'm seeking an experienced Technical Business Analyst with strong ServiceNow expertise to support a large-scale transformation programme within a complex enterprise environment. This is a contract role operating Outside IR35, ideal for a delivery-focused consultant who can bridge the gap between business stakeholders and technical teams. Key Responsibilities * Elicit, analyse, and document business and technical requirements across ServiceNow modules * Act as the primary interface between stakeholders, developers, architects, and ServiceNow platform teams * Translate business needs into clear functional and technical specifications (user stories, process flows, data models) * Support ServiceNow implementations, enhancements, and integrations (e.g. ITS
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We need talented engineers with a strong low-level graphics and GPU development background on the Android platform, ideally with experience of working in the consumer electronics industry. This contract will be hybrid (3 days a week onsite, 2 remote), based near Egham. Its within IR35 but offering a good rate to offset that! The successful candidate will contribute to new, high-performance graphics solutions, integrate our solutions with new hardware platforms, optimise the Android OS graphics stack, benchmark our systems against competitors, work with 3rd party software developers and generally ensure that we have the best possible graphics experience on the market. Role and Responsibilities - Develop innovations to optimise real-time rendering pipelines and deliver class-leading performance - Implement standard features and extensions for the Android Graphics stack
We need talented engineers with a strong low-level graphics and GPU development background on the Android platform, ideally with experience of working in the consumer electronics industry. This contract will be hybrid (3 days a week onsite, 2 remote), based near Egham. Its within IR35 but offering a good rate to offset that! The successful candidate will contribute to new, high-performance graphics solutions, integrate our solutions with new hardware platforms, optimise the Android OS graphics stack, benchmark our systems against competitors, work with 3rd party software developers and generally ensure that we have the best possible graphics experience on the market. Role and Responsibilities - Develop innovations to optimise real-time rendering pipelines and deliver class-leading performance - Implement standard features and extensions for the Android Graphics stack
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We are looking for an experienced Appian Developer to support integration and automation initiatives within a leading financial services organisation. This role focuses on connecting systems, automating complex business processes, and improving operational efficiency. * Design, develop, and maintain Appian applications to support fraud and spam prevention workflows. * Build and manage system integrations (APIs, web services, and third-party platforms) * Automate business processes to improve accuracy, speed, and resilience. * Working with offshore teams to complete end-to-end delivery, from requirements gathering to deployment * Ensure solutions meet security, compliance, and performance standards expected in financial services. * Must have proven experience as an Appian Developer. * Must have a strong background in system integration, process automation and APIs.
We are looking for an experienced Appian Developer to support integration and automation initiatives within a leading financial services organisation. This role focuses on connecting systems, automating complex business processes, and improving operational efficiency. * Design, develop, and maintain Appian applications to support fraud and spam prevention workflows. * Build and manage system integrations (APIs, web services, and third-party platforms) * Automate business processes to improve accuracy, speed, and resilience. * Working with offshore teams to complete end-to-end delivery, from requirements gathering to deployment * Ensure solutions meet security, compliance, and performance standards expected in financial services. * Must have proven experience as an Appian Developer. * Must have a strong background in system integration, process automation and APIs.
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Salesforce Marketing Cloud Engineer
Salesforce Marketing Cloud Engineer
Stackstudio Digital Ltd.
Paddington, West London (W2)
From £450 to £500 per day
Strong understanding and experience in SFMC API development.
Strong understanding and experience in SFMC API development.
130 exact matches jobs are outside your preferred location
API Development: Design, develop, and maintain robust, scalable APIs using modern frameworks and technologies.
API Development: Design, develop, and maintain robust, scalable APIs using modern frameworks and technologies.
FEATURED
Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
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MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
FEATURED
Act as the champion for TMF ODA and Open API principles across Energy Services Platform. Strong experience designing and implementing solutions using TM Forum Open APIs and a deep understanding of the ODA and Open API frameworks - Proficiency in RESTful API design, JSON, OpenAPI/Swagger specifications, microservices architecture, and cloud-native deployment models (Docker, Kubernetes, public/hybrid cloud platforms)
Act as the champion for TMF ODA and Open API principles across Energy Services Platform. Strong experience designing and implementing solutions using TM Forum Open APIs and a deep understanding of the ODA and Open API frameworks - Proficiency in RESTful API design, JSON, OpenAPI/Swagger specifications, microservices architecture, and cloud-native deployment models (Docker, Kubernetes, public/hybrid cloud platforms)
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Hands-on understanding and experience with API testing * Ability to develop functional tests, which exercise the UI, API and DB layers
Hands-on understanding and experience with API testing * Ability to develop functional tests, which exercise the UI, API and DB layers
FEATURED
Hands-on understanding and experience with API testing * Ability to develop functional tests, which exercise the UI, API and DB layers
Hands-on understanding and experience with API testing * Ability to develop functional tests, which exercise the UI, API and DB layers
FEATURED
Build custom web GIS solutions using ArcGIS API for JavaScript, Python, and modern frameworks (React/Angular). * Proficiency in ArcGIS API for JavaScript, Python, and web development technologies (HTML5, CSS3, JavaScript frameworks)
Build custom web GIS solutions using ArcGIS API for JavaScript, Python, and modern frameworks (React/Angular). * Proficiency in ArcGIS API for JavaScript, Python, and web development technologies (HTML5, CSS3, JavaScript frameworks)
Familiarity with microservices, API integration patterns and cloud concepts such as AWS.
Familiarity with microservices, API integration patterns and cloud concepts such as AWS.
Familiarity with microservices, API integration patterns and cloud concepts such as AWS.
Familiarity with microservices, API integration patterns and cloud concepts such as AWS.
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Excellent opportunity for an experienced .NET Backend Developer to join a rapidly growing business in London, where you will play a key role in shaping the backend systems, API architecture, and cloud infrastructure that support the company's technology roadmap.
Excellent opportunity for an experienced .NET Backend Developer to join a rapidly growing business in London, where you will play a key role in shaping the backend systems, API architecture, and cloud infrastructure that support the company's technology roadmap.
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Senior Software Developer Python (SC Cleared)
Senior Software Developer Python (SC Cleared)
Certes IT Service Solutions
London
£625 - £650 per day + Negotiable
Work within a multi-disciplinary product team and lead decisions on development and maintenance of a robust, scalable open data website (front end and back end); it's services and API's.
Work within a multi-disciplinary product team and lead decisions on development and maintenance of a robust, scalable open data website (front end and back end); it's services and API's.
Strong focus on optimizing inference performance and cost (e.g., model compression, quantization, API optimization).
Strong focus on optimizing inference performance and cost (e.g., model compression, quantization, API optimization).
FEATURED
Job Title:Solution Architect Finance - Mode of Working:Hybrid - Work Location (UK & I):Luton, UK - Role Description * Lead enterprise-level design discussions as a Finance Architect * Drive solution ideation, solution design, and solution implementation involving Finance, HR, and Procurement * Directly assist in the development of a solutions architecture program * Review enterprise architecture changes and validate against best-in-class industry standards * Direct the identification and recommendation of appropriate solutions, upgrades, replacements, or decommissioning options incorporating business and technology productivity, usability, and total cost of ownership (TCO) * Manage activities that take place during solution ideation, solution design, and solution implementation * Review business context for solutions to company challenges, design to realize the vision
Job Title:Solution Architect Finance - Mode of Working:Hybrid - Work Location (UK & I):Luton, UK - Role Description * Lead enterprise-level design discussions as a Finance Architect * Drive solution ideation, solution design, and solution implementation involving Finance, HR, and Procurement * Directly assist in the development of a solutions architecture program * Review enterprise architecture changes and validate against best-in-class industry standards * Direct the identification and recommendation of appropriate solutions, upgrades, replacements, or decommissioning options incorporating business and technology productivity, usability, and total cost of ownership (TCO) * Manage activities that take place during solution ideation, solution design, and solution implementation * Review business context for solutions to company challenges, design to realize the vision
Job Title:Salesforce Tech Lead - Location:Windsor, UK (1 day a week) Job Purpose and Primary Objectives:Salesforce Tech Lead - Key Responsibilities (Please specify if the position is an individual one or part of a team) * Participate in refining and scoping upcoming sprint work. * Assist solution architects with technical design and breaking down complex tasks. * Accountable for timely delivery of assigned tickets, meeting acceptance criteria. * Conduct spikes/investigations into innovative technologies for future project viability. * Ensure teammates' work meets code quality standards through reviews. * Coordinate with other teams for integrations, ensuring alignment of tasks and APIs. * Work with the QA team to investigate and resolve issues. * Mentor junior team members, providing assistance with tasks and problem-solving.
Job Title:Salesforce Tech Lead - Location:Windsor, UK (1 day a week) Job Purpose and Primary Objectives:Salesforce Tech Lead - Key Responsibilities (Please specify if the position is an individual one or part of a team) * Participate in refining and scoping upcoming sprint work. * Assist solution architects with technical design and breaking down complex tasks. * Accountable for timely delivery of assigned tickets, meeting acceptance criteria. * Conduct spikes/investigations into innovative technologies for future project viability. * Ensure teammates' work meets code quality standards through reviews. * Coordinate with other teams for integrations, ensuring alignment of tasks and APIs. * Work with the QA team to investigate and resolve issues. * Mentor junior team members, providing assistance with tasks and problem-solving.