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        25 Contract API jobs in Hertfordshire + 20 miles

        Axway API Developer

        Randstad Digital
        EC1, City of London
        £500 - £650 per day
        6 months contract Inside IR35?? £500 to £650 a day?? Remote Working (UK based) A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. You will contribute to a large government gateway project, and active SC clearance is required. The main focus of this role is to design and develop Axway policies while maintaining automated testing and code deployment. You will also be responsible for liaising with stakeholders to define requirements and design comprehensive solutions. * Axway's core products: Policy Studio, API Gateway, and API Manager. * Key communication protocols: SFTP, HTTPS, SSL/TLS, and oAuth. * Data and messaging formats: JSON, XML, SOAP, and REST. * Linux scripting and environments. * Using DevOps toolsets to automate testing and deployments.
        6 months contract Inside IR35?? £500 to £650 a day?? Remote Working (UK based) A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. You will contribute to a large government gateway project, and active SC clearance is required. The main focus of this role is to design and develop Axway policies while maintaining automated testing and code deployment. You will also be responsible for liaising with stakeholders to define requirements and design comprehensive solutions. * Axway's core products: Policy Studio, API Gateway, and API Manager. * Key communication protocols: SFTP, HTTPS, SSL/TLS, and oAuth. * Data and messaging formats: JSON, XML, SOAP, and REST. * Linux scripting and environments. * Using DevOps toolsets to automate testing and deployments.
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        NEWFEATURED
        AMS is a global workforce solutions partner committed to creating inclusive, dynamic, and future-ready workplaces. We help organisations adapt, grow, and thrive in an ever-evolving world by building, shaping, and optimising diverse talent strategies. Our Contingent Workforce Solutions (CWS) is one of our service offerings. Acting as an extension of their recruitment teams, we connect them with skilled interim and temporary professionals, fostering workplaces where everyone can contribute and succeed. Our client, a major UK retail bank, provides every day banking services to over 17 million retail customers. The banks expertise and services span across Business Services, Corporate banking, Wealth Management, Group Functions, Retail and Investment Banking.
        AMS is a global workforce solutions partner committed to creating inclusive, dynamic, and future-ready workplaces. We help organisations adapt, grow, and thrive in an ever-evolving world by building, shaping, and optimising diverse talent strategies. Our Contingent Workforce Solutions (CWS) is one of our service offerings. Acting as an extension of their recruitment teams, we connect them with skilled interim and temporary professionals, fostering workplaces where everyone can contribute and succeed. Our client, a major UK retail bank, provides every day banking services to over 17 million retail customers. The banks expertise and services span across Business Services, Corporate banking, Wealth Management, Group Functions, Retail and Investment Banking.
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        NEWFEATURED
        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.
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        NEW

        Java Developer

        Eligo Recruitment Limited
        Southwark, SE1
        £500 - £650 per day
        Contract Back-End Java Engineer Remote up to £650 per day 12-month contract (with potential extension) Are you an experienced Back-End Java Engineer with proven experience in the gambling industry? This is a fantastic opportunity to work on large-scale, high-traffic platforms for a well-known operator, delivering critical back-end services in a modern, distributed environment. This is a fully remote contract (UKbased), initially for 12 months with strong potential to extend. Key Requirements * You have strong commercial experience with Java and frameworks such as Spring/Spring Boot. * You bring solid cloud experience (preferably AWS) and are confident working with Kubernetes and Docker. * Youre skilled with messaging systems and APIs (Kafka, ActiveMQ, JMS, REST, CometD). * You have hands-on experience with databases (DB2, MongoDB, MySQL).
        Contract Back-End Java Engineer Remote up to £650 per day 12-month contract (with potential extension) Are you an experienced Back-End Java Engineer with proven experience in the gambling industry? This is a fantastic opportunity to work on large-scale, high-traffic platforms for a well-known operator, delivering critical back-end services in a modern, distributed environment. This is a fully remote contract (UKbased), initially for 12 months with strong potential to extend. Key Requirements * You have strong commercial experience with Java and frameworks such as Spring/Spring Boot. * You bring solid cloud experience (preferably AWS) and are confident working with Kubernetes and Docker. * Youre skilled with messaging systems and APIs (Kafka, ActiveMQ, JMS, REST, CometD). * You have hands-on experience with databases (DB2, MongoDB, MySQL).
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        NEW
        * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: 480per day (Outside IR35) Exciting Projects:Work on innovative digital solutions in a start-up environment. Flexible Working:Enjoy a hybrid role with one day a week in London. Collaborative Culture:Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Design Agencylooking forexperiencedPython Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up specialising in events services and design, applyingthe power of their collective imagination to creative, commercial, and cultural challenges for massive enterprises such as Amazon and Google
        * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: 480per day (Outside IR35) Exciting Projects:Work on innovative digital solutions in a start-up environment. Flexible Working:Enjoy a hybrid role with one day a week in London. Collaborative Culture:Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Design Agencylooking forexperiencedPython Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up specialising in events services and design, applyingthe power of their collective imagination to creative, commercial, and cultural challenges for massive enterprises such as Amazon and Google
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        NEW
        Job Title: Senior Developer Location:Osterley, UK (Hybrid) Duration: 6 months-Extendable * Architect, develop, and maintain scalable TypeScript/Node.js services and GraphQL APIs. * Write resilient, maintainable code with a strong focus on automated testing (unit, integration, functional, end-to-end, visual regression, Lighthouse). * Collaborate on DevOps practices: CI/CD (Jenkins, Concourse), containerisation, Helm chart authoring, and Kubernetes deployments. * Work within a cross-functional Agile team, contributing to technical direction, code reviews, and process improvements. * Ensure code is performant, secure, observable, and aligned with best practices. * Mentor and support junior developers, fostering a culture of technical excellence. * Extensive experience with TypeScript and Node.js in production environments.
        Job Title: Senior Developer Location:Osterley, UK (Hybrid) Duration: 6 months-Extendable * Architect, develop, and maintain scalable TypeScript/Node.js services and GraphQL APIs. * Write resilient, maintainable code with a strong focus on automated testing (unit, integration, functional, end-to-end, visual regression, Lighthouse). * Collaborate on DevOps practices: CI/CD (Jenkins, Concourse), containerisation, Helm chart authoring, and Kubernetes deployments. * Work within a cross-functional Agile team, contributing to technical direction, code reviews, and process improvements. * Ensure code is performant, secure, observable, and aligned with best practices. * Mentor and support junior developers, fostering a culture of technical excellence. * Extensive experience with TypeScript and Node.js in production environments.
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        SuiteCRM Developer - Remote - Inside IR35

        The Bridge (IT Recruitment) Limited
        Greenwich, SE10 0AA
        £430 - 450 per day
        This is a fantastic opportunity to work as a contract SuiteCRM Developer on a remote contract, inside IR35. This SuiteCRM Developer will be asked to deliver customisation, integration, and ongoing support for their CRM platform. * SuiteCRM or SugarCRM * PHP * CRM databases * Git * APIs If you do have the relevant experience for this contract SuiteCRM Developer position, please do apply.
        This is a fantastic opportunity to work as a contract SuiteCRM Developer on a remote contract, inside IR35. This SuiteCRM Developer will be asked to deliver customisation, integration, and ongoing support for their CRM platform. * SuiteCRM or SugarCRM * PHP * CRM databases * Git * APIs If you do have the relevant experience for this contract SuiteCRM Developer position, please do apply.
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        This is a fantastic opportunity to work as a contract SuiteCRM Developer on a remote contract, inside IR35. This SuiteCRM Developer will be asked to deliver customisation, integration, and ongoing support for their CRM platform. * SuiteCRM or SugarCRM * PHP * CRM databases * Git * APIs If you do have the relevant experience for this contract SuiteCRM Developer position, please do apply.
        This is a fantastic opportunity to work as a contract SuiteCRM Developer on a remote contract, inside IR35. This SuiteCRM Developer will be asked to deliver customisation, integration, and ongoing support for their CRM platform. * SuiteCRM or SugarCRM * PHP * CRM databases * Git * APIs If you do have the relevant experience for this contract SuiteCRM Developer position, please do apply.
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        NEW

        Principal Consultant

        Infoplus Technologies UK Ltd
        E11, East London
        From £550 to £650 per day
        Role :Principal Consultant (Planning Lead) Work mode: Remote Travel: Should be ready to travel to Netherlands as required (this will be required as needed, e.g. for CRP sessions etc . Apart from this role is remote in UK). Contract duration: 6 months Location: UK We are seeking a seasonedFunctional Leadto drive the implementation ofOracle Fusion Cloud Planning modulesincludingSupply Planning and Demand Planning, GOP and S&OP. The ideal candidate will have deep domain expertise in theCPG industry, strong functional knowledge of Oracle Cloud Planning, and experience leading multi-country rollouts in Europe. Must have skills:?? 8+ years of experience in Oracle Planning modules, with 6+ years in Oracle Fusion Cloud. Proven track record in at least 3 full-cycle Oracle Cloud Planning implementations.
        Role :Principal Consultant (Planning Lead) Work mode: Remote Travel: Should be ready to travel to Netherlands as required (this will be required as needed, e.g. for CRP sessions etc . Apart from this role is remote in UK). Contract duration: 6 months Location: UK We are seeking a seasonedFunctional Leadto drive the implementation ofOracle Fusion Cloud Planning modulesincludingSupply Planning and Demand Planning, GOP and S&OP. The ideal candidate will have deep domain expertise in theCPG industry, strong functional knowledge of Oracle Cloud Planning, and experience leading multi-country rollouts in Europe. Must have skills:?? 8+ years of experience in Oracle Planning modules, with 6+ years in Oracle Fusion Cloud. Proven track record in at least 3 full-cycle Oracle Cloud Planning implementations.
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        NEW

        Technical Architect - [AI/ML]

        SUMMER-BROWNING ASSOCIATES LIMITED
        E1, East London
        £650 - £700 per day
        Summer-Browning Associates are currently supporting our Central Government client who are seeking a Technical Architect on an AI programme, for an initial 6 month contract Service Location: London (successful candidate must be able to travel to London once per week) * Minimum of 10 years in technical architecture on the enterprise level. * Experience working in interdisciplinary teams to design and deliver solutions. * Extensive experience in AI/ML architecture and system design (minimum 2 years) with proven expertise in hands-on coding AI solutions. * Deep knowledge of machine learning frameworks, cloud platforms (AWS, Azure, GCP), and MLOps(machine learning operations) practices.
        Summer-Browning Associates are currently supporting our Central Government client who are seeking a Technical Architect on an AI programme, for an initial 6 month contract Service Location: London (successful candidate must be able to travel to London once per week) * Minimum of 10 years in technical architecture on the enterprise level. * Experience working in interdisciplinary teams to design and deliver solutions. * Extensive experience in AI/ML architecture and system design (minimum 2 years) with proven expertise in hands-on coding AI solutions. * Deep knowledge of machine learning frameworks, cloud platforms (AWS, Azure, GCP), and MLOps(machine learning operations) practices.
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        IT Operations PM

        Randstad Digital
        EC1, City of London
        £650 - £700 per day
        IT Operations Project Manager 6 Months Contract Outside IR35 £650 to £700 a day Remote - Occasional travel to Paddington A large manufacturing company is urgently seeking an Operations project manager with a background working in procurement savings. This role is ideal for a professional with a strong background in manufacturing operations and data-led applications. As a project manager you will need to have the following skills * Project Management experience * Data Platform and Analytics * Application Development and Interfacing * Be familiar with AI and API interfacing as part of the pilot project. * Manufacturing Operations * Procurement & Cost Savings * Leadership & Teamwork 6 Months Contract Outside IR35 | £650 to £700 a day | Remote - Occasional travel to Paddington
        IT Operations Project Manager 6 Months Contract Outside IR35 £650 to £700 a day Remote - Occasional travel to Paddington A large manufacturing company is urgently seeking an Operations project manager with a background working in procurement savings. This role is ideal for a professional with a strong background in manufacturing operations and data-led applications. As a project manager you will need to have the following skills * Project Management experience * Data Platform and Analytics * Application Development and Interfacing * Be familiar with AI and API interfacing as part of the pilot project. * Manufacturing Operations * Procurement & Cost Savings * Leadership & Teamwork 6 Months Contract Outside IR35 | £650 to £700 a day | Remote - Occasional travel to Paddington
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        NEWFEATURED
        Technical Architect - Genesys Cloud - 6 Months - Inside IR35 I am urgently looking to recruit a Technical Architect with Genesys Cloud Experience. The Techincal Architect will have good solid experience of having work on Genesys Clould projects. The Technical Architect will have experience in; - Genesys Cloud - Genesys Engage - AI/Ml - API Integration - Java/Pyton Experience Randstad Technologies is acting as an Employment Business in relation to this vacancy.
        Technical Architect - Genesys Cloud - 6 Months - Inside IR35 I am urgently looking to recruit a Technical Architect with Genesys Cloud Experience. The Techincal Architect will have good solid experience of having work on Genesys Clould projects. The Technical Architect will have experience in; - Genesys Cloud - Genesys Engage - AI/Ml - API Integration - Java/Pyton Experience Randstad Technologies is acting as an Employment Business in relation to this vacancy.
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        NEWFEATURED
        Your new company I'm recruiting for a very well-known and established university based in the heart of London. Your new role My client is looking for an experienced MuleSoft Developer to join them on an initial 6-month contract. You'll be developing, testing, and deploying integration solutions using MuleSoft's Anypoint Platform whilst collaborating with cross-functional teams to design and implement scalable and robust integration architectures. You'll create documentation, including technical designs, specifications, and implementation guides along with troubleshooting issues and provide solutions in a timely manner. What you'll need to succeed Core Mulesoft Technologies * Mule 4 and Dataweave 2 * Runtime Manager * Exchange * Design Studio * Anypoint MQ * Anypoint API Manager * Anypoint Studio * Mule 4 Runtime Clusters Supporting Tools and knowledge * Postman
        Your new company I'm recruiting for a very well-known and established university based in the heart of London. Your new role My client is looking for an experienced MuleSoft Developer to join them on an initial 6-month contract. You'll be developing, testing, and deploying integration solutions using MuleSoft's Anypoint Platform whilst collaborating with cross-functional teams to design and implement scalable and robust integration architectures. You'll create documentation, including technical designs, specifications, and implementation guides along with troubleshooting issues and provide solutions in a timely manner. What you'll need to succeed Core Mulesoft Technologies * Mule 4 and Dataweave 2 * Runtime Manager * Exchange * Design Studio * Anypoint MQ * Anypoint API Manager * Anypoint Studio * Mule 4 Runtime Clusters Supporting Tools and knowledge * Postman
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        NEW
        Your new company A forward-thinking, high-end residential construction firm based in Hertfordshire is embracing digital transformation to stay ahead in a tech-driven industry. With a collaborative and friendly culture, the business is investing in innovation, AI, and the right people to shape the future of construction. Your new role You'll be a tech-savvy, people-smart professional with a passion for innovation and a hands-on approach. * Experience in data analysis, digital innovation, or tech transformation (construction experience is a bonus). * Familiarity with AI tools (e.g. ChatGPT, Copilot, Midjourney) and business platforms (e.g. Power BI, Excel, Google Workspace). * Strong communication skills and the ability to translate technical concepts into plain English. * A proactive mindset, curiosity, and the ability to manage multiple priorities.
        Your new company A forward-thinking, high-end residential construction firm based in Hertfordshire is embracing digital transformation to stay ahead in a tech-driven industry. With a collaborative and friendly culture, the business is investing in innovation, AI, and the right people to shape the future of construction. Your new role You'll be a tech-savvy, people-smart professional with a passion for innovation and a hands-on approach. * Experience in data analysis, digital innovation, or tech transformation (construction experience is a bonus). * Familiarity with AI tools (e.g. ChatGPT, Copilot, Midjourney) and business platforms (e.g. Power BI, Excel, Google Workspace). * Strong communication skills and the ability to translate technical concepts into plain English. * A proactive mindset, curiosity, and the ability to manage multiple priorities.
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        NEW

        Senior PHP Developer

        Randstad Digital
        EC1, City of London
        £320 - £350 per day
        PHP Architect / Lead Developer Location: 100% Remote Contract: 6-month contract (potential extension) Start Date: ASAP About the Role We're seeking an experienced PHP Architect/Lead Developer to join our agile, forward-thinking technology team. Our in-house platforms power everything from industry-leading e-learning solutions to highly integrated office logistics, all hosted on AWS. In this role, you'll help shape the architecture of new features, enhance existing systems, and mentor a talented team of developers. You'll work with modern PHP frameworks-Symfony, Laravel, and in-house MVC solutions-while leveraging CI/CD practices and cloud-native designs. Key Responsibilities * Design, develop, and maintain enterprise applications, e-learning portals, and web services using PHP. * Apply solid software design patterns and industry best practices.
        PHP Architect / Lead Developer Location: 100% Remote Contract: 6-month contract (potential extension) Start Date: ASAP About the Role We're seeking an experienced PHP Architect/Lead Developer to join our agile, forward-thinking technology team. Our in-house platforms power everything from industry-leading e-learning solutions to highly integrated office logistics, all hosted on AWS. In this role, you'll help shape the architecture of new features, enhance existing systems, and mentor a talented team of developers. You'll work with modern PHP frameworks-Symfony, Laravel, and in-house MVC solutions-while leveraging CI/CD practices and cloud-native designs. Key Responsibilities * Design, develop, and maintain enterprise applications, e-learning portals, and web services using PHP. * Apply solid software design patterns and industry best practices.
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        NEWFEATURED
        City of London Hybrid (3/2 split) 6-months contract Up to £705 per day (via Umbrella) cer Financial are working alongside an international bank who are based in the City of London. They are seeking a Copilot Engineer/Specialist to work with them on a contract. * Lead the technical implementation of Microsoft Copilot solutions across Microsoft 365 (e.g., Word, Excel, Outlook, Teams, SharePoint) and other platforms. * Design and configure secure, scalable, and compliant Copilot deployments tailored to business needs. * Collaborate with IT, security, and business stakeholders to ensure readiness for production rollout. * Architect and implement integrations between Copilot and enterprise systems to enable contextual, intelligent experiences.
        City of London Hybrid (3/2 split) 6-months contract Up to £705 per day (via Umbrella) cer Financial are working alongside an international bank who are based in the City of London. They are seeking a Copilot Engineer/Specialist to work with them on a contract. * Lead the technical implementation of Microsoft Copilot solutions across Microsoft 365 (e.g., Word, Excel, Outlook, Teams, SharePoint) and other platforms. * Design and configure secure, scalable, and compliant Copilot deployments tailored to business needs. * Collaborate with IT, security, and business stakeholders to ensure readiness for production rollout. * Architect and implement integrations between Copilot and enterprise systems to enable contextual, intelligent experiences.
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        FEATURED
        Were looking for a Senior Security Engineer for our growing, prestigious client in the data sector, based in London, on an initial 6 - 9 monthcontract basis paying market day rates depending on experience Outside IR35. This role offers hybrid working with an expectation to be in the office 3 days per week. Youll be joining a technical team focused on strengthening cloud security and ensuring compliance across Microsoft Azure environments. This role will involve hands-on security engineering, working closely with infrastructure and DevOps teams, and supporting the adoption of Microsofts security toolset across the organisation. * Securing Azure environments in line with best practices - essential * Microsoft Defender (Cloud, Endpoint, 365) - essential * Sentinel - essential * Microsoft Purview, Compliance Manager and related compliance tools
        Were looking for a Senior Security Engineer for our growing, prestigious client in the data sector, based in London, on an initial 6 - 9 monthcontract basis paying market day rates depending on experience Outside IR35. This role offers hybrid working with an expectation to be in the office 3 days per week. Youll be joining a technical team focused on strengthening cloud security and ensuring compliance across Microsoft Azure environments. This role will involve hands-on security engineering, working closely with infrastructure and DevOps teams, and supporting the adoption of Microsofts security toolset across the organisation. * Securing Azure environments in line with best practices - essential * Microsoft Defender (Cloud, Endpoint, 365) - essential * Sentinel - essential * Microsoft Purview, Compliance Manager and related compliance tools
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        NEW

        Technical Project Manager

        Sterling Williams Ltd
        Mayfair, W1
        From £70,000 to £80,000 per annum
        Sterling Williams are working alongside an International Bank looking to hire a hands-on, technical Project Manager on an 18-month FTC basis to support a changing core banking system. You will play a crucial role in overseeing and implementing complex technical integration projects e.g. digital platforms, GL, Payments and other 3rd party systems covering KYC/AML etc. 18 month Fixed Term Contract initially Salary: £80,000 pa plus benefits Full-Time; office based 4 days per week (West End of London) The ideal candidate will have a strong background in software development, system architecture, and project management and will be responsible for leading integration efforts. * Lead the integration stream for the core banking project, focusing on technical aspects. * Assist in the transition to new digital initiatives, ensuring a safe, secure, and risk-managed process.
        Sterling Williams are working alongside an International Bank looking to hire a hands-on, technical Project Manager on an 18-month FTC basis to support a changing core banking system. You will play a crucial role in overseeing and implementing complex technical integration projects e.g. digital platforms, GL, Payments and other 3rd party systems covering KYC/AML etc. 18 month Fixed Term Contract initially Salary: £80,000 pa plus benefits Full-Time; office based 4 days per week (West End of London) The ideal candidate will have a strong background in software development, system architecture, and project management and will be responsible for leading integration efforts. * Lead the integration stream for the core banking project, focusing on technical aspects. * Assist in the transition to new digital initiatives, ensuring a safe, secure, and risk-managed process.
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        NEW

        Azure Developer

        Queen Square Recruitment Limited
        EC2N, City of London
        From £500 to £600 per day inside IR35, DOE
        Developer Azure Cosmos DB Location:Central London (hybrid) Contract Type:6 month initial contract, starting ASAP Industry:Banking & Financial Services Day rate:£500 - £600 (TBC, inside IR35) Our client, a large global consultancy, is seeking a Cosmos DBDeveloperto play a key role in designing and developingscalable, secure, and high-performance applicationstailored for thebanking and financial servicessector. This is a hands-on role where you willarchitect cloud-native solutionsusingAzure Cosmos DB (SQL & Mongo APIs), designpartitioning strategies, indexing, and consistency models, and ensurereal-time processing of critical financial data. Key Responsibilities * Develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API) * Design efficient data models tailored to NoSQL principles and application requirements.
        Developer Azure Cosmos DB Location:Central London (hybrid) Contract Type:6 month initial contract, starting ASAP Industry:Banking & Financial Services Day rate:£500 - £600 (TBC, inside IR35) Our client, a large global consultancy, is seeking a Cosmos DBDeveloperto play a key role in designing and developingscalable, secure, and high-performance applicationstailored for thebanking and financial servicessector. This is a hands-on role where you willarchitect cloud-native solutionsusingAzure Cosmos DB (SQL & Mongo APIs), designpartitioning strategies, indexing, and consistency models, and ensurereal-time processing of critical financial data. Key Responsibilities * Develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API) * Design efficient data models tailored to NoSQL principles and application requirements.
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        NEW
        18 Month Fixed Term Contract Milton Keynes: £53,000 - £57,000 Hybrid Working Ready to shape the future of digital assessment through precision, collaboration, and innovation? AQA is looking for a Senior Test Analyst - Automation with proven experience in creating automated tests using BDD methodology. You'll translate specifications into meaningful automated tests using C# toolsets and libraries such as Playwright. You're someone who thrives on quality, champions best practices, and is eager to play a key role in delivering the systems behind millions of GCSE and A-level results across the UK and internationally. This is more than just writing test scripts - it's your opportunity to influence how we build, test, and deliver software that truly matters.
        18 Month Fixed Term Contract Milton Keynes: £53,000 - £57,000 Hybrid Working Ready to shape the future of digital assessment through precision, collaboration, and innovation? AQA is looking for a Senior Test Analyst - Automation with proven experience in creating automated tests using BDD methodology. You'll translate specifications into meaningful automated tests using C# toolsets and libraries such as Playwright. You're someone who thrives on quality, champions best practices, and is eager to play a key role in delivering the systems behind millions of GCSE and A-level results across the UK and internationally. This is more than just writing test scripts - it's your opportunity to influence how we build, test, and deliver software that truly matters.
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        NEWFEATURED
        8x8, Inc. (NASDAQ: EGHT) believes that CX limits were meant to be shattered. We connect people and organizations through seamless communication on the industry's most integrated platform for Customer Experiencecombining Contact Center, Unified Communications, and CPaaS APIs. The 8x8 Platform for CX integrates AI at every level to enable personalized customer journeys, drive operational excellence and insights, and facilitate team collaboration. We help customer experience and IT leaders become the heartbeat of their organizations, empowering them to unlock the potential of every interaction. With one platform, one ecosystem, and one data model, you can turn every team into a customer-facing team and unify your CX to conquer the complexity.
        8x8, Inc. (NASDAQ: EGHT) believes that CX limits were meant to be shattered. We connect people and organizations through seamless communication on the industry's most integrated platform for Customer Experiencecombining Contact Center, Unified Communications, and CPaaS APIs. The 8x8 Platform for CX integrates AI at every level to enable personalized customer journeys, drive operational excellence and insights, and facilitate team collaboration. We help customer experience and IT leaders become the heartbeat of their organizations, empowering them to unlock the potential of every interaction. With one platform, one ecosystem, and one data model, you can turn every team into a customer-facing team and unify your CX to conquer the complexity.
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        Hey! We're Huel, and we're pleased to meet you Our culture thrives on high performance, and we set the bar high for new Hueligans who join us. We invite you to read the advert below for our new Automation & AI Executive position to understand the role, and explore our 7 Huel values before applying to ensure we have the right working environment for you! The role As Huel scales globally, were doubling down on smart ways of working, and were on the hunt for a curious, technically-minded Automation & AI Executive to help us make it happen. In this role, youll be at the forefront of how we build, ship, and scale AI-powered workflows that strip out manual tasks, speed up processes, and unlock faster, smarter ways of working for every team across the business.
        Hey! We're Huel, and we're pleased to meet you Our culture thrives on high performance, and we set the bar high for new Hueligans who join us. We invite you to read the advert below for our new Automation & AI Executive position to understand the role, and explore our 7 Huel values before applying to ensure we have the right working environment for you! The role As Huel scales globally, were doubling down on smart ways of working, and were on the hunt for a curious, technically-minded Automation & AI Executive to help us make it happen. In this role, youll be at the forefront of how we build, ship, and scale AI-powered workflows that strip out manual tasks, speed up processes, and unlock faster, smarter ways of working for every team across the business.
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        NEW
        Company Description Were the worlds leading sports technology company, at the intersection between sports, media, and betting. More than 1,700 sports federations, media outlets, betting operators, and consumer platforms across 120 countries rely on our know-how and technology to boost their business. Job Description Sportradar is a worldwide leader in sports data and audiovisual services for bookmakers. Over the course of the last years Sportradar significantly expanded its range of products & services by acquiring Vaix.ai, the industry leader for Deep Learning AI for Personalization and CRM, first to market bringing Netflix and Spotify to Sports and iGaming.
        Company Description Were the worlds leading sports technology company, at the intersection between sports, media, and betting. More than 1,700 sports federations, media outlets, betting operators, and consumer platforms across 120 countries rely on our know-how and technology to boost their business. Job Description Sportradar is a worldwide leader in sports data and audiovisual services for bookmakers. Over the course of the last years Sportradar significantly expanded its range of products & services by acquiring Vaix.ai, the industry leader for Deep Learning AI for Personalization and CRM, first to market bringing Netflix and Spotify to Sports and iGaming.
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        Senior Data Engineer

        WITH INTELLIGENCE LIMITED
        City of London, London
        £70,000 - £90,000 a year
        Over the past 25 years, With Intelligence has evolved from a traditional financial publisher into a dynamic, product-led fintech company. Our mission is to empower investors and managers worldwide by connecting them to the people and data they need to raise and allocate assets efficiently. We have recently secured a new round of funding from a prominent technology investor. This investment will drive our committed plan to elevate our product into a pioneering, market-leading platform. We are rapidly expanding our focus on data, both internally and within our products and services. We are now looking for more help in this area to keep up with the growing demands of a dynamic, data driven organisation. We need someone that wants to get stuck in and do stuff!
        Over the past 25 years, With Intelligence has evolved from a traditional financial publisher into a dynamic, product-led fintech company. Our mission is to empower investors and managers worldwide by connecting them to the people and data they need to raise and allocate assets efficiently. We have recently secured a new round of funding from a prominent technology investor. This investment will drive our committed plan to elevate our product into a pioneering, market-leading platform. We are rapidly expanding our focus on data, both internally and within our products and services. We are now looking for more help in this area to keep up with the growing demands of a dynamic, data driven organisation. We need someone that wants to get stuck in and do stuff!
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        For over 25 years, Abcam has been providing tools the scientific community needs to enable faster breakthroughs in critical areas like cancer, neurological disorders, infectious diseases, and metabolic disorders. We believe that to continue making progress, we need to work together, each bringing our own unique perspectives to make an impact on the world. This community needs people like you: dedicated, agile and above all audacious so we can truly drive science forward. As a Full Stack Engineer (Product Data Compliance) at Abcam you will be at the forefront of developing and maintaining cutting-edge systems that manage product data and ensure compliance. You will collaborate closely with our regulatory compliance team and digital partners to deliver high-quality data across various platforms, ensuring our customers receive the best experience possible.
        For over 25 years, Abcam has been providing tools the scientific community needs to enable faster breakthroughs in critical areas like cancer, neurological disorders, infectious diseases, and metabolic disorders. We believe that to continue making progress, we need to work together, each bringing our own unique perspectives to make an impact on the world. This community needs people like you: dedicated, agile and above all audacious so we can truly drive science forward. As a Full Stack Engineer (Product Data Compliance) at Abcam you will be at the forefront of developing and maintaining cutting-edge systems that manage product data and ensure compliance. You will collaborate closely with our regulatory compliance team and digital partners to deliver high-quality data across various platforms, ensuring our customers receive the best experience possible.
        more

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        What is the average salary for API in Hertfordshire?

        Average salary per year
        £62,499

        The average salary for a API in Hertfordshire is £62,499. API in Hertfordshire salaries range from £47,499 to £67,499.

        Frequently Asked Questions

        How many contract API jobs are there in Hertfordshire?
        There are 25 contract API jobs within 20 miles of Hertfordshire available on Jobsite right now.

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