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        83 API jobs in City of London + 20 miles

        Client Server

        C# Developer .Net SQL API

        Client Server
        The City, City of London (EC4), EC4R
        £75000 - £90000 per annum + benefits
        C# Developer / Software Engineer (C# .Net SQL API) London onsite to £90k - There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Apply now to find out more about this C# Developer / Software Engineer (C# .Net SQL API) opportunity.
        C# Developer / Software Engineer (C# .Net SQL API) London onsite to £90k - There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Apply now to find out more about this C# Developer / Software Engineer (C# .Net SQL API) opportunity.
        more
        PREMIUM
        Client Server

        C++ Developer MacOS API

        Client Server
        The City, City of London (EC4), EC2V
        £65000 - £80000 per annum + benefits
        As a C++ Developer you will focus on enabling the core product, written in C / C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions, tools and API integrations.
        As a C++ Developer you will focus on enabling the core product, written in C / C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions, tools and API integrations.
        more
        PREMIUM
        ARC IT Recruitment Ltd

        Tech Lead – Azure / .NET

        ARC IT Recruitment Ltd
        The City, City of London (EC4), EC4N
        Up to £100,000 per annum c.20% bonus + excellent benefits
        This role sits within a core backend and API-focused team responsible for internal platforms that directly support commercial operations. * Act as the technical lead for a backend/API team supporting real-time, high-availability systems * Strong commercial experience with C# and .NET in backend, API-driven systems
        This role sits within a core backend and API-focused team responsible for internal platforms that directly support commercial operations. * Act as the technical lead for a backend/API team supporting real-time, high-availability systems * Strong commercial experience with C# and .NET in backend, API-driven systems
        more
        Henderson Scott

        Director of Technology Architecture and Data

        Henderson Scott
        North West London, London, NW1 7AW
        £125000 - £135000 per annum + Hybrid, 30 Days AL,
        Oversee cloud architecture (primarily Microsoft Azure), integration patterns, and API frameworks. * API management, data architecture, integration patterns
        Oversee cloud architecture (primarily Microsoft Azure), integration patterns, and API frameworks. * API management, data architecture, integration patterns
        more
        FEATURED
        Experis

        Qualtrics Developer

        Experis
        City of London (EC1)
        £500 - £550 per day
        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).
        more
        FEATURED
        Crimson Ltd

        Technical Development Lead - Enfield, London

        Crimson Ltd
        Enfield, London
        £65000 - £80000 per annum
        Design and implement Service-Oriented Architecture, API gateways, and scalable integration strategies. * Expert in JavaScript, API protocols, message queuing, and synchronising data across POS, WMS, CRM, and loyalty systems.
        Design and implement Service-Oriented Architecture, API gateways, and scalable integration strategies. * Expert in JavaScript, API protocols, message queuing, and synchronising data across POS, WMS, CRM, and loyalty systems.
        more
        MS Talent Ltd

        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.
        more
        Crimson

        Technical Development Lead - Enfield, London

        Crimson
        Enfield (EN1)
        £65000 - £80000 per annum
        Design and implement Service-Oriented Architecture, API gateways, and scalable integration strategies. * Expert in JavaScript, API protocols, message queuing, and synchronising data across POS, WMS, CRM, and loyalty systems.
        Design and implement Service-Oriented Architecture, API gateways, and scalable integration strategies. * Expert in JavaScript, API protocols, message queuing, and synchronising data across POS, WMS, CRM, and loyalty systems.
        more
        Smart Sourcer Limited

        Senior Automated & Manual Tester – Mobile, Playwright, C#, SQL, Azure

        Smart Sourcer Limited
        City of London (EC1)
        From £70,000 to £75,000 per annum + 10% bonus + excellent benefits
        Hands-on experience with Playwright or similar automation tools (e.g. Selenium) with extensive experience enhancing automated test frameworks for UI & API testing * Maintaining and enhancing UI/API test frameworks (e.g., Selenium, Playwright)
        Hands-on experience with Playwright or similar automation tools (e.g. Selenium) with extensive experience enhancing automated test frameworks for UI & API testing * Maintaining and enhancing UI/API test frameworks (e.g., Selenium, Playwright)
        more
        Loopla

        Full Stack Developer

        Loopla
        Euston, North West London (NW1), NW1 2RT
        Competitive
        Vitest/Jest, Docker, CI/CD (GitHub Actions), Shadcn/MUI, MongoDB, microservices, Cloudflare/CDNs, Firebase, Google Maps API, startup experience.
        Vitest/Jest, Docker, CI/CD (GitHub Actions), Shadcn/MUI, MongoDB, microservices, Cloudflare/CDNs, Firebase, Google Maps API, startup experience.
        more

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        What is the average salary for API in City of London?

        Average salary per year
        £82,499
        The average salary for a API in City of London is £82,499. API in City of London salaries range from £64,999 to £92,499.

        Frequently Asked Questions

        How many API jobs are there in City of London?
        There are 83 API jobs within 20 miles of City of London available on CWJobs right now.
        What other similar jobs are there to API jobs in City of London?
        As well as API jobs in City of London, you can find IT, Software Development, Architecture, amongst many others.