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        Hertfordshire
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        • Hertfordshire

        39 API jobs in Hertford + 20 miles

        281 exact matches jobs are outside your preferred location

        Platform Engineer

        DISNEY
        South East
        Competitive
        Investigate and resolve production issues promptly from user interface (UI) through to application logic (API & database) and infrastructure
        Investigate and resolve production issues promptly from user interface (UI) through to application logic (API & database) and infrastructure
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        NEW
        Extensive Salesforce development experience (including Apex triggers, classes, asynchronous Apex, API Integrations, Platform Events, LWCs and Sites)
        Extensive Salesforce development experience (including Apex triggers, classes, asynchronous Apex, API Integrations, Platform Events, LWCs and Sites)
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        NEW

        Senior C# Software Engineer

        Spectrum It Recruitment Limited
        UK
        £60000 - £65000 per annum
        Due to continued success, they are looking to grow one of their key software engineering teams working on some of their most successful SaaS products. The Senior C# Software Engineer will join an established team developing business logic for Windows based products. Key experience * Extensive commercial experience in C# Windows programming * Multithreading / TPL * XML * SQL * Version control * Unit testing Experience in any of the following areas would be advantageous but is not a prerequisite * WIX installers * Windows services eg Active Directory, Exchange etc * Client-server architecture development * M365 APIs If you are seeking a role of this nature please get in touch for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
        Due to continued success, they are looking to grow one of their key software engineering teams working on some of their most successful SaaS products. The Senior C# Software Engineer will join an established team developing business logic for Windows based products. Key experience * Extensive commercial experience in C# Windows programming * Multithreading / TPL * XML * SQL * Version control * Unit testing Experience in any of the following areas would be advantageous but is not a prerequisite * WIX installers * Windows services eg Active Directory, Exchange etc * Client-server architecture development * M365 APIs If you are seeking a role of this nature please get in touch for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
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        Expertise in Salesforce deployment strategies, including change sets, Salesforce DX, and metadata API. * Experience in Salesforce API integration (REST, SOAP, Platform Events).
        Expertise in Salesforce deployment strategies, including change sets, Salesforce DX, and metadata API. * Experience in Salesforce API integration (REST, SOAP, Platform Events).
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        Recurring Payments Innovation: Build rock-solid API infrastructure and platform capabilities for pull payment functionality, tackling complex collection challenges head-on. * B2B Technical Product Expertise: You've got solid experience with API products, PaaS solutions, or technical SaaS platforms and love building merchant banking infrastructure for developers who integrate multiple financial endpoints and banking APIs.
        Recurring Payments Innovation: Build rock-solid API infrastructure and platform capabilities for pull payment functionality, tackling complex collection challenges head-on. * B2B Technical Product Expertise: You've got solid experience with API products, PaaS solutions, or technical SaaS platforms and love building merchant banking infrastructure for developers who integrate multiple financial endpoints and banking APIs.
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        In-depth understanding of data structures, system architecture, API development for microservices frameworks, distributed systems and other backend-related concepts and best practices
        In-depth understanding of data structures, system architecture, API development for microservices frameworks, distributed systems and other backend-related concepts and best practices
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        Remote, with occasional London travel £450 to £500 p/d - Inside IR35 3-month initial contract (Immediate start) iO Associates is partnered with a Software Development Consultancy delivering key Public Sector projects. We're looking for Front-End Developers (React and Angular) with a track record of working in Government, Council, or wider Public Sector environments. * Strong hands-on experience with React and Angular * Solid understanding of core web development (HTML, CSS, JavaScript, APIs) * Previous experience delivering solutions within Gov / Council / Public Sector projects * Ability to work in an agile, collaborative environment If this sounds like you, drop me a DM or send your CV directly.
        Remote, with occasional London travel £450 to £500 p/d - Inside IR35 3-month initial contract (Immediate start) iO Associates is partnered with a Software Development Consultancy delivering key Public Sector projects. We're looking for Front-End Developers (React and Angular) with a track record of working in Government, Council, or wider Public Sector environments. * Strong hands-on experience with React and Angular * Solid understanding of core web development (HTML, CSS, JavaScript, APIs) * Previous experience delivering solutions within Gov / Council / Public Sector projects * Ability to work in an agile, collaborative environment If this sounds like you, drop me a DM or send your CV directly.
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        Java Developers - 100% Remote role - SC Clearance is preferred but will sponsor exceptional applicants - Overview of the Java Developers role - We are looking for highly skilled Java Developers to join a secure government project with a critical deadline. This is an opportunity to work on a large-scale system where your expertise in Java, Spring Boot, and AWS will be essential. You will be part of a collaborative team, building scalable solutions and solving complex problems that have a real impact. Key responsibilities for Java Developers * Design, develop, and deploy backend services using Java and Spring Boot * Build and maintain scalable APIs * Analyse schemas and write optimised SQL queries against large datasets * Work closely with DevOps on Docker containerisation and cloud deployment in AWS * Contribute to architectural decisions and shape technical roadmaps
        Java Developers - 100% Remote role - SC Clearance is preferred but will sponsor exceptional applicants - Overview of the Java Developers role - We are looking for highly skilled Java Developers to join a secure government project with a critical deadline. This is an opportunity to work on a large-scale system where your expertise in Java, Spring Boot, and AWS will be essential. You will be part of a collaborative team, building scalable solutions and solving complex problems that have a real impact. Key responsibilities for Java Developers * Design, develop, and deploy backend services using Java and Spring Boot * Build and maintain scalable APIs * Analyse schemas and write optimised SQL queries against large datasets * Work closely with DevOps on Docker containerisation and cloud deployment in AWS * Contribute to architectural decisions and shape technical roadmaps
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        Our Purpose - Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary - Mastercard is a global technology company in the payments industry, connecting billions of consumers, financial institutions, merchants, governments, and businesses worldwide. We are driving the future of commerce by enabling secure, simple, and smart transactions. Artificial Intelligence is at the core of our strategy to make Mastercard stronger an
        Our Purpose - Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary - Mastercard is a global technology company in the payments industry, connecting billions of consumers, financial institutions, merchants, governments, and businesses worldwide. We are driving the future of commerce by enabling secure, simple, and smart transactions. Artificial Intelligence is at the core of our strategy to make Mastercard stronger an
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        At Burberry, we believe creativity opens spaces. Our purpose is to unlock the power of imagination to push boundaries and open new possibilities for our people, our customers and our communities. This is the core belief that has guided Burberry since it was founded in 1856 and is central to how we operate as a company today. We aim to provide an environment for creative minds from different backgrounds to thrive, bringing a wide range of skills and experiences to everything we do. As a purposeful, values-driven brand, we are committed to being a force for good in the world as well, creating the next generation of sustainable luxury for customers, driving industry change and championing our communities. The Principal Engineer will act as a technical thought partner and knowledge anchor for platform engineering across our Digital ecosystem.
        At Burberry, we believe creativity opens spaces. Our purpose is to unlock the power of imagination to push boundaries and open new possibilities for our people, our customers and our communities. This is the core belief that has guided Burberry since it was founded in 1856 and is central to how we operate as a company today. We aim to provide an environment for creative minds from different backgrounds to thrive, bringing a wide range of skills and experiences to everything we do. As a purposeful, values-driven brand, we are committed to being a force for good in the world as well, creating the next generation of sustainable luxury for customers, driving industry change and championing our communities. The Principal Engineer will act as a technical thought partner and knowledge anchor for platform engineering across our Digital ecosystem.
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        Job Title: Social Media Technology Executive - Location: 1HQ - Type of contract: full-time, permanent - Diageo is the worlds leading premium drinks company, a business built on the principles and foundations laid by the giants of our industry. Arthur Guinness, Alexander Walker, and many other dedicated people that followed in their footsteps, cared deeply about the people and businesses they fostered, and the communities in which they operated. Today we stand on the shoulders of these giants and act with the same entrepreneurial spirit. We are a spirited company born of an incredible entrepreneurial legacy. The success of Guinness, Smirnoff, Johnnie Walker, Tanqueray, Baileys and many more brands led to the formation of our company in 1997. And we only thrive today because of the talent of our people to grow our brands, old and new, and keep them strong.
        Job Title: Social Media Technology Executive - Location: 1HQ - Type of contract: full-time, permanent - Diageo is the worlds leading premium drinks company, a business built on the principles and foundations laid by the giants of our industry. Arthur Guinness, Alexander Walker, and many other dedicated people that followed in their footsteps, cared deeply about the people and businesses they fostered, and the communities in which they operated. Today we stand on the shoulders of these giants and act with the same entrepreneurial spirit. We are a spirited company born of an incredible entrepreneurial legacy. The success of Guinness, Smirnoff, Johnnie Walker, Tanqueray, Baileys and many more brands led to the formation of our company in 1997. And we only thrive today because of the talent of our people to grow our brands, old and new, and keep them strong.
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        About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 60+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
        About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 60+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
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        Front End Developer - Must have an Active DV Clearance - Hybrid - Location: Bristol, London, Manchester or Cambridge - Salary: £70,000 - £120,000 (depending on experience) We're looking for a skilled and motivated Front End Developer to help deliver modern, user-focused digital services for clients in the Defence sector. This is an exciting opportunity to join a multi-disciplinary team transforming the way Defence users interact with critical systems. You'll work closely with designers, UX specialists, back-end developers and stakeholders to bring ideas to life through intuitive and responsive interfaces. You'll be key to developing new applications, optimising performance, and shaping the digital journey from prototype through to production. * Building responsive, high-quality web applications and user interfaces using HTML, CSS and JavaScript
        Front End Developer - Must have an Active DV Clearance - Hybrid - Location: Bristol, London, Manchester or Cambridge - Salary: £70,000 - £120,000 (depending on experience) We're looking for a skilled and motivated Front End Developer to help deliver modern, user-focused digital services for clients in the Defence sector. This is an exciting opportunity to join a multi-disciplinary team transforming the way Defence users interact with critical systems. You'll work closely with designers, UX specialists, back-end developers and stakeholders to bring ideas to life through intuitive and responsive interfaces. You'll be key to developing new applications, optimising performance, and shaping the digital journey from prototype through to production. * Building responsive, high-quality web applications and user interfaces using HTML, CSS and JavaScript
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        NEWPREMIUM
        Full Stack Developer - Must have an Active DV Clearance - Hybrid - Location: Bristol, London, Manchester or Cambridge - Salary: £70,000 - £120,000 (depending on experience and clearance) We are looking for a Full Stack Developer to join a growing public sector team delivering secure, high-impact digital services across Defence & Security. This is a unique opportunity to use your development expertise to help solve real-world challenges for government and national security clients. You'll work on meaningful projects in an agile environment, applying your skills across the full software development lifecycle - from design through to deployment. You'll be part of a collaborative and supportive engineering team, working alongside technical leads, project managers, and stakeholders to deliver robust and scalable solutions.
        Full Stack Developer - Must have an Active DV Clearance - Hybrid - Location: Bristol, London, Manchester or Cambridge - Salary: £70,000 - £120,000 (depending on experience and clearance) We are looking for a Full Stack Developer to join a growing public sector team delivering secure, high-impact digital services across Defence & Security. This is a unique opportunity to use your development expertise to help solve real-world challenges for government and national security clients. You'll work on meaningful projects in an agile environment, applying your skills across the full software development lifecycle - from design through to deployment. You'll be part of a collaborative and supportive engineering team, working alongside technical leads, project managers, and stakeholders to deliver robust and scalable solutions.
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        NEWPREMIUM
        NVIDIA is looking for an expert software engineer to help us expand our catalog of Device eXtension (Dx) APIs for our math libraries. For over a decade, NVIDIA's accelerated computing platform has revolutionized HPC and AI with applications ranging from COVID-19 research to autonomous machines. Did you know that our team develops the GPU-accelerated mathematical libraries that make all of this possible? The hardware and software accelerated computing ecosystem is constantly evolving, including shifts towards hybrid backends, deep integration with high-level languages and ecosystems (such as Python, Numpy, JAX, MLIR), and optimization at runtime for maximum flexibility and performance. Our Dx APIs allow developers to embed highly-optimized mathematical operations in their applications for these and other scenarios.
        NVIDIA is looking for an expert software engineer to help us expand our catalog of Device eXtension (Dx) APIs for our math libraries. For over a decade, NVIDIA's accelerated computing platform has revolutionized HPC and AI with applications ranging from COVID-19 research to autonomous machines. Did you know that our team develops the GPU-accelerated mathematical libraries that make all of this possible? The hardware and software accelerated computing ecosystem is constantly evolving, including shifts towards hybrid backends, deep integration with high-level languages and ecosystems (such as Python, Numpy, JAX, MLIR), and optimization at runtime for maximum flexibility and performance. Our Dx APIs allow developers to embed highly-optimized mathematical operations in their applications for these and other scenarios.
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        At Holland & Barrett, we're on a mission to make health and wellness a way of life for everyone and technology is at the heart of how we make that happen. As we continue our journey to become a leading omni-channel retailer, we're investing heavily in innovative tech to deliver faster, more personalised, and more convenient experiences for our customers both online and in-store. We're collaborative, customer-obsessed, and love working at pace. We embrace cloud-first principles, build solutions tailored to our business (rather than buying off-the-shelf), and embed automation and testing across everything we do from software to infrastructure and data. This role sits within our Online Customer Experience (OCX) vertical the team driving our e-commerce platforms across web and mobile. We're wrapping up a multi-year technical transformation and moving into an exciting new
        At Holland & Barrett, we're on a mission to make health and wellness a way of life for everyone and technology is at the heart of how we make that happen. As we continue our journey to become a leading omni-channel retailer, we're investing heavily in innovative tech to deliver faster, more personalised, and more convenient experiences for our customers both online and in-store. We're collaborative, customer-obsessed, and love working at pace. We embrace cloud-first principles, build solutions tailored to our business (rather than buying off-the-shelf), and embed automation and testing across everything we do from software to infrastructure and data. This role sits within our Online Customer Experience (OCX) vertical the team driving our e-commerce platforms across web and mobile. We're wrapping up a multi-year technical transformation and moving into an exciting new
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        Introduction - Together, were working to welcome millions more passengers, while ensuring aviation can continue to be a force for good by leading global efforts in sustainability. At Heathrow, you can be part of this providing solutions that make every journey better for millions each year. That means ensuring we meet the changing needs of the passengers, colleagues and partners who use our airport to work, travel, trade, shop, eat, explore and connect. Our Solutions team covers project management, process improvement, business change, technology, cyber defence, masterplanning, infrastructure and procurement. It brings together people with the skills to deliver prestigious and often large-scale projects, from transforming terminals to making big reductions in our carbon emissions. Every day will test your skills and give you the opportunity to make your mark.
        Introduction - Together, were working to welcome millions more passengers, while ensuring aviation can continue to be a force for good by leading global efforts in sustainability. At Heathrow, you can be part of this providing solutions that make every journey better for millions each year. That means ensuring we meet the changing needs of the passengers, colleagues and partners who use our airport to work, travel, trade, shop, eat, explore and connect. Our Solutions team covers project management, process improvement, business change, technology, cyber defence, masterplanning, infrastructure and procurement. It brings together people with the skills to deliver prestigious and often large-scale projects, from transforming terminals to making big reductions in our carbon emissions. Every day will test your skills and give you the opportunity to make your mark.
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