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        63 Contract API jobs in City of London + 20 miles

        Client Server

        Fidessa Developer Java API OMS - Capital Markets

        Client Server
        The City, EC3
        £100000 - £135000 per annum + bonus + benefits
        Fidessa Developer (Java Spring Boot API) London to £135k - As a Fidessa Developer (Java Spring Boot API) you will receive a competitive - Apply now to find out more about this Fidessa Developer (Java Spring Boot API) opportunity.
        Fidessa Developer (Java Spring Boot API) London to £135k - As a Fidessa Developer (Java Spring Boot API) you will receive a competitive - Apply now to find out more about this Fidessa Developer (Java Spring Boot API) opportunity.
        more
        NEWPREMIUM
        Randstad Digital

        Axway API Developer

        Randstad Digital
        EC1, City of London
        £500 - £650 per day
        A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
        A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
        more
        NEWFEATURED
        Client Server

        Software Engineer C++ Mac Extensions EDR

        Client Server
        The City, EC4
        £65000 - £80000 per annum + benefits
        As a Software 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 Software 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
        NEWPREMIUM
        Halian Technology Limited

        .NET Developer

        Halian Technology Limited
        W1, Central London
        From £70,000 to £80,000 per annum Plus bonus and benefits
        Proven hands-on experience withAWS servicessuch as Lambda, ECS/Fargate, API Gateway, DynamoDB, S3, CloudFormation/Terraform.
        Proven hands-on experience withAWS servicessuch as Lambda, ECS/Fargate, API Gateway, DynamoDB, S3, CloudFormation/Terraform.
        more
        NEW
        MARSH CORPORATE SERVICES LIMITED

        Global Claims, IT Solutions Leader

        MARSH CORPORATE SERVICES LIMITED
        The City, EC3R 5BU
        Discretionary Bonus, Pension Scheme & Private Healthcare
        Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
        Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
        more
        NEWPREMIUM
        TEKsystems

        Senior Test Automation Engineer

        TEKsystems
        Central London, London
        500.00 - 800.00 GBP/Daily
        Lead all phases of the testing lifecycle, focusing on comprehensive coverage across functional and non-functional testing (e.g., performance, load), encompassing Data, API, and UI layers.
        Lead all phases of the testing lifecycle, focusing on comprehensive coverage across functional and non-functional testing (e.g., performance, load), encompassing Data, API, and UI layers.
        more
        NEWPREMIUM
        BP Energy

        Senior Site Reliability Engineer

        BP Energy
        TW16, Sunbury-On-Thames
        Competitive
        Agility core practices, Agility core practices, Analytics, API and platform design, Business Analysis, Cloud Platforms, Coaching, Communication, Configuration management and release, Continuous deployment and release, Data Structures and Algorithms (Inactive), Digital Project Management, Documentation and knowledge sharing, Facilitation, Information Security, iOS and Android development, Mentoring, Metrics definition and instrumentation, NoSql data modelling, Relational Data Modelling, Risk Management, Scripting, Service operations and resiliency, Software Design and Development, Source control and code management {+ 4 more}
        Agility core practices, Agility core practices, Analytics, API and platform design, Business Analysis, Cloud Platforms, Coaching, Communication, Configuration management and release, Continuous deployment and release, Data Structures and Algorithms (Inactive), Digital Project Management, Documentation and knowledge sharing, Facilitation, Information Security, iOS and Android development, Mentoring, Metrics definition and instrumentation, NoSql data modelling, Relational Data Modelling, Risk Management, Scripting, Service operations and resiliency, Software Design and Development, Source control and code management {+ 4 more}
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        NEW
        Reed Technology

        MS Power Platform Developer with AI Chatbot

        Reed Technology
        KT10, Esher
        £50000 - £60000 per annum
        Location: Esher (two days WFH) Must have Right to Work in the UK (cannot provide sponsorship) This person will contribute directly to the organisations digital transformation roadmap by embedding automation and AI into our operations and business. This will involve building AI-powered conversational agents and automating business processes using Microsoft Power Platform tools like Power Apps, Power Automate, and Power Virtual Agents (part of Microsoft Copilot Studio). * Chatbot Development: Design, build, and implement AI chatbots using Power Virtual Agents/Copilot Studio to streamline interactions and automate tasks. * Process Automation: Create automated workflows and processes using Power Automate to improve efficiency and reduce manual tasks, often incorporating AI capabilities. * Application Development: Develop intelligent business applications with Power Apps,
        Location: Esher (two days WFH) Must have Right to Work in the UK (cannot provide sponsorship) This person will contribute directly to the organisations digital transformation roadmap by embedding automation and AI into our operations and business. This will involve building AI-powered conversational agents and automating business processes using Microsoft Power Platform tools like Power Apps, Power Automate, and Power Virtual Agents (part of Microsoft Copilot Studio). * Chatbot Development: Design, build, and implement AI chatbots using Power Virtual Agents/Copilot Studio to streamline interactions and automate tasks. * Process Automation: Create automated workflows and processes using Power Automate to improve efficiency and reduce manual tasks, often incorporating AI capabilities. * Application Development: Develop intelligent business applications with Power Apps,
        more
        NEW
        Pioneer Search

        Full Stack Integration Developer - Azure, .NET, NextJS

        Pioneer Search
        City of London, London
        £600 - £650 per day
        A leading technical consultancy is seeking a Full Stack Integration Developer for an Outside IR35 contract. This hybrid role (London-based) offers and requires SC Clearance. You'll play a key role in a large-scale digitisation program, developing and integrating modern web applications within an Azure ecosystem. While primarily hands-on, you'll also contribute to architectural design and strategy. * Application Development: Build and maintain scalable web applications using .NET (C#, ASP.NET Core) and Azure Functions. * Front-End Development: Develop modern UIs using NextJS and other JavaScript frameworks. * Integration & Backend: Work with Azure Service Bus, Event Grid, and Static Web Apps. Design and optimize SQL Server databases, stored procedures, and APIs. * DevOps & Infrastructure: Create and manage CI/CD pipelines using Azure DevOps, GitHub Actions, or Jenkins.
        A leading technical consultancy is seeking a Full Stack Integration Developer for an Outside IR35 contract. This hybrid role (London-based) offers and requires SC Clearance. You'll play a key role in a large-scale digitisation program, developing and integrating modern web applications within an Azure ecosystem. While primarily hands-on, you'll also contribute to architectural design and strategy. * Application Development: Build and maintain scalable web applications using .NET (C#, ASP.NET Core) and Azure Functions. * Front-End Development: Develop modern UIs using NextJS and other JavaScript frameworks. * Integration & Backend: Work with Azure Service Bus, Event Grid, and Static Web Apps. Design and optimize SQL Server databases, stored procedures, and APIs. * DevOps & Infrastructure: Create and manage CI/CD pipelines using Azure DevOps, GitHub Actions, or Jenkins.
        more
        Data Careers

        Java Developer

        Data Careers
        Southwark, SE1
        £600 - £650 per day
        Location: Home Based 5 Month Contract Pay Rate: £600 - £650 per day (INSIDE IR35) Skills: Java 8, Spring, Maven, Git, JUnit, Web APIs (REST/JSON and XML/SOAP), SC Clearance We are looking to recruit an SC Cleared Java Developer for a leading technology consultancy on an initial 5 month contract. This is a fully remote role. Due to the nature of the project valid SC Clearance is required. * Java 8 * Spring * Maven * Git * Junit * Web APIs (REST/JSON and XML/SOAP) * JSPs, Javascript, JQuery, html, CSS, Mockito/JMock, MS SQL Server, MyBatis, Azure, Azure DevOps Pipelines, Docker, Ansible, Linux, Java 11, Spring Boot
        Location: Home Based 5 Month Contract Pay Rate: £600 - £650 per day (INSIDE IR35) Skills: Java 8, Spring, Maven, Git, JUnit, Web APIs (REST/JSON and XML/SOAP), SC Clearance We are looking to recruit an SC Cleared Java Developer for a leading technology consultancy on an initial 5 month contract. This is a fully remote role. Due to the nature of the project valid SC Clearance is required. * Java 8 * Spring * Maven * Git * Junit * Web APIs (REST/JSON and XML/SOAP) * JSPs, Javascript, JQuery, html, CSS, Mockito/JMock, MS SQL Server, MyBatis, Azure, Azure DevOps Pipelines, Docker, Ansible, Linux, Java 11, Spring Boot
        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 contract API jobs are there in City of London?
        There are 63 contract API jobs within 20 miles of City of London available on CWJobs right now.
        What other similar jobs are there to contract API jobs in City of London?
        As well as contract API jobs in City of London, you can find contract Cyber Security, Implementation, IT, amongst many others.