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        13 Contract API jobs in Grays Inn + 20 miles

        67 exact matches jobs are outside your preferred location

        D365 Finance Senior Integration Developer (remote)

        Hays
        London
        £500.0 - £550.0 per day + c£510 per day (inside IR35)
        We are currently seeking a D365 Senior Integration Developer (finance) to design and implement integrations using D365 API's (e.g. Data Management Package, REST API, OData) You will develop automation processes for data transformation, upload, import and error handling in batch or near real-time modes. Proficiency in tools like Postman, Azure Logic Apps, and scripting (e.g., C#, PowerShell) for API orchestration, along with ETL processes.
        We are currently seeking a D365 Senior Integration Developer (finance) to design and implement integrations using D365 API's (e.g. Data Management Package, REST API, OData) You will develop automation processes for data transformation, upload, import and error handling in batch or near real-time modes. Proficiency in tools like Postman, Azure Logic Apps, and scripting (e.g., C#, PowerShell) for API orchestration, along with ETL processes.
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        NEW

        Solutions Architect

        Queen Square Recruitment Limited
        SL4, Windsor
        Unspecified
        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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        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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        Senior Python Developer

        Hays
        London
        £600.0 - £700.0 per day + Up to £700pd Umbrella
        I am currently working with a London-based Tier 1 investment bank who are actively seeking a Python Developer on a long-term contract basis. What you'll need to succeed * Strong Python programming experience within Financial Services - Mandatory * Good understanding of quantitative finance * Good experience developing and optimising Python-based calculators and models. * Strong experience developing high-performance APIs using Flask or FastAPI. * Expertise in Pandas, NumPy and other computing libraries. * Strong experience liaising with front-office stakeholders - What you'll get in return * Initial 6-month contract with extensions * Up to £700pd umbrella * London-based hybrid working - What you need to do now - If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
        I am currently working with a London-based Tier 1 investment bank who are actively seeking a Python Developer on a long-term contract basis. What you'll need to succeed * Strong Python programming experience within Financial Services - Mandatory * Good understanding of quantitative finance * Good experience developing and optimising Python-based calculators and models. * Strong experience developing high-performance APIs using Flask or FastAPI. * Expertise in Pandas, NumPy and other computing libraries. * Strong experience liaising with front-office stakeholders - What you'll get in return * Initial 6-month contract with extensions * Up to £700pd umbrella * London-based hybrid working - What you need to do now - If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
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        NEW
        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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        Location: Hybrid - 3 days per week onsite in Victoria, London (non-negotiable) Start Date: October - Contract Length: Until end of December (with likely extension) Day Rate: Up to £450/day (outside IR35, negotiable) A leading digital consultancy is seeking a highly skilled Senior Front-End Developer to join a blended delivery team working on a high-profile media application. This role offers the opportunity to collaborate closely with consultancy colleagues, client stakeholders, and nearshore partners to deliver an exceptional digital experience for end users. Key Responsibilities * Develop high-quality, performant, and scalable front-end solutions using Next.js, React, and TypeScript * Implement animations using Motion to create smooth, engaging user experiences * Ensure front-end performance, accessibility, and SEO best practices are met
        Location: Hybrid - 3 days per week onsite in Victoria, London (non-negotiable) Start Date: October - Contract Length: Until end of December (with likely extension) Day Rate: Up to £450/day (outside IR35, negotiable) A leading digital consultancy is seeking a highly skilled Senior Front-End Developer to join a blended delivery team working on a high-profile media application. This role offers the opportunity to collaborate closely with consultancy colleagues, client stakeholders, and nearshore partners to deliver an exceptional digital experience for end users. Key Responsibilities * Develop high-quality, performant, and scalable front-end solutions using Next.js, React, and TypeScript * Implement animations using Motion to create smooth, engaging user experiences * Ensure front-end performance, accessibility, and SEO best practices are met
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        Python Developer

        Hays
        London
        £600.0 - £700.0 per day + Up to £700pd Umbrella
        I am currently working with a London-based Tier 1 investment bank who are actively seeking a Python Developer on a long-term contract basis. What you'll need to succeed * Strong Python programming experience within Financial Services - Mandatory * Good understanding of quantitative finance * Good experience developing and optimising Python-based calculators and models. * Strong experience developing high-performance APIs using Flask or FastAPI. * Expertise in Pandas, NumPy and other computing libraries. * Strong experience liaising with front-office stakeholders - What you'll get in return * Initial 6-month contract with extensions * Up to £700pd umbrella * London-based hybrid working - What you need to do nowIf you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
        I am currently working with a London-based Tier 1 investment bank who are actively seeking a Python Developer on a long-term contract basis. What you'll need to succeed * Strong Python programming experience within Financial Services - Mandatory * Good understanding of quantitative finance * Good experience developing and optimising Python-based calculators and models. * Strong experience developing high-performance APIs using Flask or FastAPI. * Expertise in Pandas, NumPy and other computing libraries. * Strong experience liaising with front-office stakeholders - What you'll get in return * Initial 6-month contract with extensions * Up to £700pd umbrella * London-based hybrid working - What you need to do nowIf you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
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        London - hybrid - 8 Months+ Inside IR35- Umbrella only * Proficient with React Native and Expo open source modules (bare workflow) * Strong React fundamentals: hooks, context, state management * React Navigation, app routing JavaScript & TypeScript * Advanced JavaScript (ES6+) and TypeScript * Type safety and maintainability for large-scale projects * Native Platform Integration Swift (iOS) and Kotlin (Android) for custom native modules * Native module integration in Expo * React Native projects * State Management & Storage Redux for complex state management MMKV for high-performance key-value storage * Architecture & APIs System Design * Deep expertise in complex React Native architectures and patterns * Subject matter expert for technical problem-solving and architectural guidance * Designs solutions for the most challenging technical requirements GraphQL Integratio
        London - hybrid - 8 Months+ Inside IR35- Umbrella only * Proficient with React Native and Expo open source modules (bare workflow) * Strong React fundamentals: hooks, context, state management * React Navigation, app routing JavaScript & TypeScript * Advanced JavaScript (ES6+) and TypeScript * Type safety and maintainability for large-scale projects * Native Platform Integration Swift (iOS) and Kotlin (Android) for custom native modules * Native module integration in Expo * React Native projects * State Management & Storage Redux for complex state management MMKV for high-performance key-value storage * Architecture & APIs System Design * Deep expertise in complex React Native architectures and patterns * Subject matter expert for technical problem-solving and architectural guidance * Designs solutions for the most challenging technical requirements GraphQL Integratio
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        NEWPREMIUM
        New Senior Data Engineer Contract Roles We have multiple new Senior Data Engineer Contract roles for a London based financial services client of ours. This would be working on a greenfield project in a new team building out a digital platform. This is outside IR35, 1-2 days per week onsite in London and initial 6 month contract and an immediate start. The ideal candidate will be a data engineer from a software engineering background with machine learning experience. The rate available for this position is: £550-575pd * ETL / Data Pipelines / Data Integration * Python & Java (for building data pipelines & APIs) * Snowflake * AWS * Machine Learning * React or Angular Please apply directly or email me your CV on
        New Senior Data Engineer Contract Roles We have multiple new Senior Data Engineer Contract roles for a London based financial services client of ours. This would be working on a greenfield project in a new team building out a digital platform. This is outside IR35, 1-2 days per week onsite in London and initial 6 month contract and an immediate start. The ideal candidate will be a data engineer from a software engineering background with machine learning experience. The rate available for this position is: £550-575pd * ETL / Data Pipelines / Data Integration * Python & Java (for building data pipelines & APIs) * Snowflake * AWS * Machine Learning * React or Angular Please apply directly or email me your CV on
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        NEWFEATURED

        C# Engineer (Blazor Experience)

        Hays
        MK1, Milton Keynes
        £350.0 - £400.0 per day + £350 - 400 per day Outside IR35
        Role OverviewOur client based in Milton Keynes is looking for a passionate and skilled C# Engineer with proven experience in Blazor to join their growing development team. This is a fantastic opportunity to work on high-performance web applications in a collaborative and innovative environment. You'll be working closely with a talented team of developers, designers, and product managers to deliver cutting-edge solutions that drive real value. Responsibilities * Build and maintain interactive, scalable web applications using Blazor and .NET technologies. * Collaborate with cross-functional teams to define, design, and implement new features. * Ensure code quality through code reviews, unit testing, and adherence to best practices. * Troubleshoot and resolve issues across the full stack. * Contribute to technical discussions and share knowledge with the wider team.
        Role OverviewOur client based in Milton Keynes is looking for a passionate and skilled C# Engineer with proven experience in Blazor to join their growing development team. This is a fantastic opportunity to work on high-performance web applications in a collaborative and innovative environment. You'll be working closely with a talented team of developers, designers, and product managers to deliver cutting-edge solutions that drive real value. Responsibilities * Build and maintain interactive, scalable web applications using Blazor and .NET technologies. * Collaborate with cross-functional teams to define, design, and implement new features. * Ensure code quality through code reviews, unit testing, and adherence to best practices. * Troubleshoot and resolve issues across the full stack. * Contribute to technical discussions and share knowledge with the wider team.
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        Salesforce Developer

        Queen Square Recruitment Limited
        SL4, Windsor
        £500 per day
        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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        NEW
        We collaborate closely with product, engineering, research, and GTM teams to ensure the developer journeyfrom initial API call to full production deploymentis seamless, effective, and delightful.
        We collaborate closely with product, engineering, research, and GTM teams to ensure the developer journeyfrom initial API call to full production deploymentis seamless, effective, and delightful.
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        Wallarm is the only solution that unifies best-in-class API Security and WAAP (Next-Gen WAF) capabilities to protect your entire API and web application portfolio in multi-cloud and cloud-native environments. * Recommend API security best practices, application architectures, platforms and application infrastructure required to successfully implement a complete API security solution based on Wallarm - Prior experience in API security, API management, SIEM, Software Development, DevOps, DevSecOps, or web application firewalls is preferred
        Wallarm is the only solution that unifies best-in-class API Security and WAAP (Next-Gen WAF) capabilities to protect your entire API and web application portfolio in multi-cloud and cloud-native environments. * Recommend API security best practices, application architectures, platforms and application infrastructure required to successfully implement a complete API security solution based on Wallarm - Prior experience in API security, API management, SIEM, Software Development, DevOps, DevSecOps, or web application firewalls is preferred
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        NEW
        Work closely with Windows OS components , including Windows Registry, COM API, Windows Events, and system services . * Strong understanding of Windows internals , including services, registry, COM API, and event handling.
        Work closely with Windows OS components , including Windows Registry, COM API, Windows Events, and system services . * Strong understanding of Windows internals , including services, registry, COM API, and event handling.
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        As an emerging leader in the $10B+ communications API market, we empower global brands to connect better with their customers, employees, and partners through transformative communications experiences. For example, Vonage API solutions empower organizations to build their custom omnichannel communications structure. As a Developer Advocate , you will create high-quality written content that resonates with developers, highlighting our API offerings, partnerships, and more. * API experience: Familiarity with RESTful APIs and cloud communications platforms.
        As an emerging leader in the $10B+ communications API market, we empower global brands to connect better with their customers, employees, and partners through transformative communications experiences. For example, Vonage API solutions empower organizations to build their custom omnichannel communications structure. As a Developer Advocate , you will create high-quality written content that resonates with developers, highlighting our API offerings, partnerships, and more. * API experience: Familiarity with RESTful APIs and cloud communications platforms.
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        Reporting to our Solutions Architect Team Lead, Alex Karet - About us - At hyperexponential, our mission is to help the world take more risk - safely. Our SaaS platform, hx Renew , is transforming the insurance industry by enabling insurers to make better decisions, faster and more confidently than ever before. In the seven years since our founding, weve become the market leader. We work with 40+ customers globally - including a third of the London Market - and were only just getting started. Its always the best time to join hyperexponential. But the best best time? Thats now. Field Engineering at hyperexponential - Our Field Engineering team provides a world-class technical capability to our Revenue function, with a mission to supercharge its three core pillars of Sales, Marketing, and Customer. Our primary objective is to help our customers realise the full value an
        Reporting to our Solutions Architect Team Lead, Alex Karet - About us - At hyperexponential, our mission is to help the world take more risk - safely. Our SaaS platform, hx Renew , is transforming the insurance industry by enabling insurers to make better decisions, faster and more confidently than ever before. In the seven years since our founding, weve become the market leader. We work with 40+ customers globally - including a third of the London Market - and were only just getting started. Its always the best time to join hyperexponential. But the best best time? Thats now. Field Engineering at hyperexponential - Our Field Engineering team provides a world-class technical capability to our Revenue function, with a mission to supercharge its three core pillars of Sales, Marketing, and Customer. Our primary objective is to help our customers realise the full value an
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        Additionally, our apps and API are trusted by tens of thousands of drivers and fleets including Blue Badge innovators Motability Operations.
        Additionally, our apps and API are trusted by tens of thousands of drivers and fleets including Blue Badge innovators Motability Operations.
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        Through our platform a merchant can connect via a simple API connection to the world's payment ecosystem, increasing conversion at lower cost and satisfying their entire payments needs.
        Through our platform a merchant can connect via a simple API connection to the world's payment ecosystem, increasing conversion at lower cost and satisfying their entire payments needs.
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        Frequently Asked Questions

        How many contract API jobs are there in Grays Inn?
        There are 13 contract API jobs within 20 miles of Grays Inn available on CWJobs right now.

        Where in Grays Inn are these contract jobs?
        You can find contract jobs in Fivensgreen, Haslemere Industrial Estate, Mayfair.

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