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6 Permanent API jobs in East Sussex + 10 miles
481 exact matches jobs are outside your preferred location
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A Day in the Life of a Full Stack Developer - Imagine starting your day with a freshly brewed coffee and a team huddle thats buzzing with energy, ideas, and ambition. Its Monday, and as always, youre at the heart of innovation in our office. As a Full Stack Developer in our talented team, your role reaches far beyond writing code - youre building the architecture that powers unforgettable digital experiences for users across the UK. Youre part of a company leading the digital entertainment evolution. Here, your work has real impact. Every line of code you commit helps shape a platform that brings daily engagement, thrill, and value to thousands. Youre involved in the full lifecycle of development - from idea to implementation - ensuring every feature is both robust and elegant. Youve been searching for a role where you can fully own your craft.
A Day in the Life of a Full Stack Developer - Imagine starting your day with a freshly brewed coffee and a team huddle thats buzzing with energy, ideas, and ambition. Its Monday, and as always, youre at the heart of innovation in our office. As a Full Stack Developer in our talented team, your role reaches far beyond writing code - youre building the architecture that powers unforgettable digital experiences for users across the UK. Youre part of a company leading the digital entertainment evolution. Here, your work has real impact. Every line of code you commit helps shape a platform that brings daily engagement, thrill, and value to thousands. Youre involved in the full lifecycle of development - from idea to implementation - ensuring every feature is both robust and elegant. Youve been searching for a role where you can fully own your craft.
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Location: London, Fulltime Onsite - Salary: £100,000-140,000 - The company is expanding rapidly and building a brand-new tech hub in London. We are looking for innovative, forward-thinking individuals to be part of this exciting journey. This is a great chance to be one of the first contributors to a team that is growing following significant funding. This role offers the chance to work in an environment designed to foster innovation and creativity at the highest level. You'll collaborate with exceptionally talented colleagues while having the freedom to push the limits of your engineering skills. In a company that actively invests in and encourages technological advancement, you'll have the opportunity to make a real impact. You will lead and mentor junior developers within the organisation and help grow this new London office.
Location: London, Fulltime Onsite - Salary: £100,000-140,000 - The company is expanding rapidly and building a brand-new tech hub in London. We are looking for innovative, forward-thinking individuals to be part of this exciting journey. This is a great chance to be one of the first contributors to a team that is growing following significant funding. This role offers the chance to work in an environment designed to foster innovation and creativity at the highest level. You'll collaborate with exceptionally talented colleagues while having the freedom to push the limits of your engineering skills. In a company that actively invests in and encourages technological advancement, you'll have the opportunity to make a real impact. You will lead and mentor junior developers within the organisation and help grow this new London office.
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Support the implementation of automation scripts using Selenium and API testing tools where applicable. o Hands-on experience with API testing tools (e.g., Postman, REST Assured).
Support the implementation of automation scripts using Selenium and API testing tools where applicable. o Hands-on experience with API testing tools (e.g., Postman, REST Assured).
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Senior Shopify Developer (PHP / Laravel)
Senior Shopify Developer (PHP / Laravel)
We Are Dcoded Limited
W10, West London
From £65,000 to £75,000 per annum
Development: Build and deploy Shopify apps using PHP (Laravel), integrating with the Shopify API and third-party tools. * API Development: Create and manage integrations using RESTful and GraphQL APIs. * Strong background in API integrations, webhooks, and secure auth (OAuth).
Development: Build and deploy Shopify apps using PHP (Laravel), integrating with the Shopify API and third-party tools. * API Development: Create and manage integrations using RESTful and GraphQL APIs. * Strong background in API integrations, webhooks, and secure auth (OAuth).
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C# .Net Programme Manager, Finance, Hybrid, London WC2
C# .Net Programme Manager, Finance, Hybrid, London WC2
Langley James Limited
St James, WC2N 5HS
Up to £85000 per annum + bonus
With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway. Experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway. Experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
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C# .Net Programme Manager, Finance, Hybrid, London WC2
C# .Net Programme Manager, Finance, Hybrid, London WC2
Langley James
St James, WC2N 5HS
Up to £85000 per annum + bonus
With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway. Experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway. Experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
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Utilise RESTful interfaces and possess a strong understanding of API design.
Utilise RESTful interfaces and possess a strong understanding of API design.
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Stats Perform is the market leader in sports tech. We provide the richest and most trusted sports data available and are at the forefront of the latest advancements in AI and machine learning to turn this data into something magic. We entwine our extensive back-catalogue of data in with innovative products and machine-learning to deliver insights, predictions, and super-fast data for a variety of sporting organisations worldwide, plus the biggest names in media and broadcast. We partner with top-flight teams, leagues, coaches, betting companies, broadcasters, media outlets, gaming specialists and professional bodies to improve the overall experience for sports fans. We constantly collect the most detailed sports data to enhance a wide range of sports competitions, from tennis to soccer to basketball and more. Stats Perform is the knowledge bank behind it all.
Stats Perform is the market leader in sports tech. We provide the richest and most trusted sports data available and are at the forefront of the latest advancements in AI and machine learning to turn this data into something magic. We entwine our extensive back-catalogue of data in with innovative products and machine-learning to deliver insights, predictions, and super-fast data for a variety of sporting organisations worldwide, plus the biggest names in media and broadcast. We partner with top-flight teams, leagues, coaches, betting companies, broadcasters, media outlets, gaming specialists and professional bodies to improve the overall experience for sports fans. We constantly collect the most detailed sports data to enhance a wide range of sports competitions, from tennis to soccer to basketball and more. Stats Perform is the knowledge bank behind it all.
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Software Development Engineer In Test
Software Development Engineer In Test
FULLSTACK RECRUITMENT LIMITED
EC1N, City of London
Up to £120,000 per annum
Design, develop, and maintain robust, scalable automated test frameworks (UI, API, and integration)
Design, develop, and maintain robust, scalable automated test frameworks (UI, API, and integration)
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£45,000 - 55,000 GBP - Hybrid WORKING - Location: United Kingdom (Greater London) Type: Permanent - Location: London (Hybrid) Salary: £45,000 - £55,000 - Our client is a tier 1 Consultancy firm specialising in strategic development, digital transformation, and product innovation. The company combines innovative thinking and breakthrough technologies to achieve enduring results for their clients and is looking to add an experienced Java Engineer to their talented and growing team * Design and implement robust and scalable Java solutions including functional interfaces, streams, and collections * Optimise performance through parallel runs and resource sharing, demonstrating a deep understanding of multi-threading concepts * Utilise MVC frameworks to design and develop web applications * Design RESTful APIs using JAX-RS adhering to best practices
£45,000 - 55,000 GBP - Hybrid WORKING - Location: United Kingdom (Greater London) Type: Permanent - Location: London (Hybrid) Salary: £45,000 - £55,000 - Our client is a tier 1 Consultancy firm specialising in strategic development, digital transformation, and product innovation. The company combines innovative thinking and breakthrough technologies to achieve enduring results for their clients and is looking to add an experienced Java Engineer to their talented and growing team * Design and implement robust and scalable Java solutions including functional interfaces, streams, and collections * Optimise performance through parallel runs and resource sharing, demonstrating a deep understanding of multi-threading concepts * Utilise MVC frameworks to design and develop web applications * Design RESTful APIs using JAX-RS adhering to best practices
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Technical Programme Manager - .NET, C# - Hybrid, London WC2
Technical Programme Manager - .NET, C# - Hybrid, London WC2
Langley James Limited
St James, WC2N 5HS
Up to £85000 per annum + bonus
With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway. Experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway. Experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
Join a pioneering fintech startup on a mission to reshape how crypto is used in everyday payments. Backed by a strategic partnership with Tellers, this is one of the few companies bringing real-world utility to Web3 – and they’re looking for a Full-Stack Developer to play a key role in the journey. You’ll be building a high-impact crypto payments platform from the ground up — working with wallets, APIs, and blockchain networks to deliver a seamless web-based product experience. • 5+ years of hands-on JavaScript development (full-stack) • Strong backend development experience with PHP, Java, Node.js (or similar web stack) • Proven experience working with blockchain infrastructure • Familiar with implementing crypto wallets (Cestode and non-Cestode) • Experience integrating third-party APIs and service providers • Solid understanding of how blockchain networks operate
Join a pioneering fintech startup on a mission to reshape how crypto is used in everyday payments. Backed by a strategic partnership with Tellers, this is one of the few companies bringing real-world utility to Web3 – and they’re looking for a Full-Stack Developer to play a key role in the journey. You’ll be building a high-impact crypto payments platform from the ground up — working with wallets, APIs, and blockchain networks to deliver a seamless web-based product experience. • 5+ years of hands-on JavaScript development (full-stack) • Strong backend development experience with PHP, Java, Node.js (or similar web stack) • Proven experience working with blockchain infrastructure • Familiar with implementing crypto wallets (Cestode and non-Cestode) • Experience integrating third-party APIs and service providers • Solid understanding of how blockchain networks operate
FEATUREDNEW
Technical Programme Manager - .NET, C# - Hybrid, London WC2
Technical Programme Manager - .NET, C# - Hybrid, London WC2
Langley James
St James, WC2N 5HS
Up to £85000 per annum + bonus
With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway. Experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway. Experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
Junior .NET Developer
Junior .NET Developer
Lime Street Recruitment LTD
EC3, City of London
From £30,000 to £40,000 per annum
We are looking for an enthusiastic .NET (C#)/Blazor developer to work on a variety of projects, including AI and price modelling. We have a team of around 16 developers across various disciplines in London with more developers in the US. Based in the heart of the City of London, we produce applications for both our internal and external users. We are not looking necessarily for years of commercial experience. You will need some .NET experience, and we will want to see examples of work you have already done. However enthusiasm and commitment are far more important to us. We will invest heavily in the right person. We are working on a number of applications that call out to the Azure AI services. We also integrate with external market systems and external datasets. We expect to keep investing heavily in AI and you would be at the forefront of this development.
We are looking for an enthusiastic .NET (C#)/Blazor developer to work on a variety of projects, including AI and price modelling. We have a team of around 16 developers across various disciplines in London with more developers in the US. Based in the heart of the City of London, we produce applications for both our internal and external users. We are not looking necessarily for years of commercial experience. You will need some .NET experience, and we will want to see examples of work you have already done. However enthusiasm and commitment are far more important to us. We will invest heavily in the right person. We are working on a number of applications that call out to the Azure AI services. We also integrate with external market systems and external datasets. We expect to keep investing heavily in AI and you would be at the forefront of this development.
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Functional Consultant - D365 Field Service
Functional Consultant - D365 Field Service
Kinetech Recruitment
EC1V, City of London, EC1V 2NX
Up to £60,000 per annum + Bonus + Benefits
Functional Consultant Microsoft Dynamics 365 Field Service & CE - Fully Remote (UK-based) Salary up to £60,000 + bonus - An ambitious early-stage business is looking for a Functional Consultant for Dynamics 365 Field Service and other CE modules (Customer Service / Sales) a critical tool for the business. The Role - As Functional Consultant, you will take full ownership of Microsoft Dynamics Field Service product, acting as the vital link between business operations and technical solutions. You will manage change requests, and oversee the integration of acquired businesses into the group platform. Key Responsibilities * Help to define Product Strategy:Shape the vision and roadmap for the Dynamics 365 Field Service to support business growth. * Collaborate with Stakeholders:Gather, prioritise, and translate business needs into detailed plans.
Functional Consultant Microsoft Dynamics 365 Field Service & CE - Fully Remote (UK-based) Salary up to £60,000 + bonus - An ambitious early-stage business is looking for a Functional Consultant for Dynamics 365 Field Service and other CE modules (Customer Service / Sales) a critical tool for the business. The Role - As Functional Consultant, you will take full ownership of Microsoft Dynamics Field Service product, acting as the vital link between business operations and technical solutions. You will manage change requests, and oversee the integration of acquired businesses into the group platform. Key Responsibilities * Help to define Product Strategy:Shape the vision and roadmap for the Dynamics 365 Field Service to support business growth. * Collaborate with Stakeholders:Gather, prioritise, and translate business needs into detailed plans.
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Senior .Net Developer
Senior .Net Developer
Halian Technology Limited
W1, Central London
From £70,000 to £75,000 per annum Plus benefits
We are seeking a highly skilled Senior .NET Developer to join my clients growing technology team. This role requires strong expertise in .NET development, deep knowledge of SQL and database management, and a solid understanding of software architecture and solution design. Experience in the payments and e-card industry is highly desirable. You will get the opportunity to work with global and worldwide brands such as Google, Sony and Visa to name of the many organisations. Key Responsibilities * Design, develop, and maintain scalable and robust .NET applications. Lead the implementation of technical solutions aligned with business goals. * Optimize and manage complex SQL databases and ensure data integrity and performance. * Collaborate with cross-functional teams including Product, QA, and DevOps.
We are seeking a highly skilled Senior .NET Developer to join my clients growing technology team. This role requires strong expertise in .NET development, deep knowledge of SQL and database management, and a solid understanding of software architecture and solution design. Experience in the payments and e-card industry is highly desirable. You will get the opportunity to work with global and worldwide brands such as Google, Sony and Visa to name of the many organisations. Key Responsibilities * Design, develop, and maintain scalable and robust .NET applications. Lead the implementation of technical solutions aligned with business goals. * Optimize and manage complex SQL databases and ensure data integrity and performance. * Collaborate with cross-functional teams including Product, QA, and DevOps.
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Solid understanding of microservices and API's
Solid understanding of microservices and API's
API and Integration proficiency
API and Integration proficiency
PREMIUM
You will bring with you prior experience of developing Web API based applications written in .NET Framework or .NET Core, working in medium sized development teams utilizing features such as Azure web apps, SQL PaaS databases, blob storage, service bus, and other Azure services.
You will bring with you prior experience of developing Web API based applications written in .NET Framework or .NET Core, working in medium sized development teams utilizing features such as Azure web apps, SQL PaaS databases, blob storage, service bus, and other Azure services.
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Full Stack Software Developer ASP.NET C# jQuery HTML5 SQL - The ideal candidatewill be responsible for building and maintaining internal and external facing web applications. You will be working in a team of experienced developers to build highly performing systems that improve efficiency. Teams use Agile Methodology and follow Scrum and Kanban Frameworks. *ASP.NET C# jQuery HTML5 SQL Azure GIT - Job requirements - Role Responsibilities * Maintain existing products and provide resolutions to Escalated Support Calls within the agreed SLAs * Require testing developments from end to end before passed to Acceptance Testing * Ability to adapt quickly to an existing, complex environment * Evaluate, redesign and modify existing program logic to quickly and efficiently meet and exceed customer needs, by integrating new requirements and by applying proven development paths
Full Stack Software Developer ASP.NET C# jQuery HTML5 SQL - The ideal candidatewill be responsible for building and maintaining internal and external facing web applications. You will be working in a team of experienced developers to build highly performing systems that improve efficiency. Teams use Agile Methodology and follow Scrum and Kanban Frameworks. *ASP.NET C# jQuery HTML5 SQL Azure GIT - Job requirements - Role Responsibilities * Maintain existing products and provide resolutions to Escalated Support Calls within the agreed SLAs * Require testing developments from end to end before passed to Acceptance Testing * Ability to adapt quickly to an existing, complex environment * Evaluate, redesign and modify existing program logic to quickly and efficiently meet and exceed customer needs, by integrating new requirements and by applying proven development paths
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Drive the development of cloud-native applications, with a strong focus on modern JavaScript frameworks and API/microservices architecture. * Strong background in JavaScript frameworks, microservices, and API development.
Drive the development of cloud-native applications, with a strong focus on modern JavaScript frameworks and API/microservices architecture. * Strong background in JavaScript frameworks, microservices, and API development.
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Preferably Cloud based solutions withWeb, API n Mobile testing.
Preferably Cloud based solutions withWeb, API n Mobile testing.
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Next.JS Software Engineer - Remote
Next.JS Software Engineer - Remote
Exposed Solutions
W1B, West London
From £60,000 to £80,000 per annum
Experience with API design and development, including RESTful services.
Experience with API design and development, including RESTful services.
Senior Product Owner - FX
Senior Product Owner - FX
Halian Technology Limited
W1, Central London
From £80,000 to £95,000 per annum
My client is seeking a Senior Product Owner with deep FX experience to own and drive the development of our FX and treasury-related products. You will work across cross-functional teams to shape our product strategy, with a focus on FX-as-a-Service, liquidity integration, deposit innovation (including zero-deposit solutions), forwards, and hedging products. This role demands a blend of strategic thinking, market understanding, and hands-on delivery skills. You'll be working closely with engineering, sales, operations, and external partners to deliver high-impact solutions that meet customer needs and strengthen our market position. Key Responsibilities * Own the end-to-end product lifecycle for FX and treasury products, from ideation to delivery and ongoing optimization. o FX-as-a-Service capabilities - o Integrated liquidity partnerships (e.g., with Tier 1 providers,
My client is seeking a Senior Product Owner with deep FX experience to own and drive the development of our FX and treasury-related products. You will work across cross-functional teams to shape our product strategy, with a focus on FX-as-a-Service, liquidity integration, deposit innovation (including zero-deposit solutions), forwards, and hedging products. This role demands a blend of strategic thinking, market understanding, and hands-on delivery skills. You'll be working closely with engineering, sales, operations, and external partners to deliver high-impact solutions that meet customer needs and strengthen our market position. Key Responsibilities * Own the end-to-end product lifecycle for FX and treasury products, from ideation to delivery and ongoing optimization. o FX-as-a-Service capabilities - o Integrated liquidity partnerships (e.g., with Tier 1 providers,
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Software Engineer - React
Software Engineer - React
Halian Technology Limited
W1, Central London
From £60,000 to £70,000 per annum
My client is an innovative fintech company at the forefront of transforming financial services through cutting-edge technology. We aim to build seamless, secure, and scalable solutions that simplify the world of finance for our clients. They are collaborative and agile team thrives in a fast-paced environment, and they're looking for a talented Frontend Engineer to join their growing development team. As a Frontend Engineer, you will play a key role in developing user-friendly, high-performance, and responsive web applications. You will work closely with product managers, backend engineers, and designers to create modern, feature-rich applications that integrate seamlessly with cloud-based services. You will leverage your expertise in React, TypeScript, and AWS to build scalable and maintainable solutions that power financial applications.
My client is an innovative fintech company at the forefront of transforming financial services through cutting-edge technology. We aim to build seamless, secure, and scalable solutions that simplify the world of finance for our clients. They are collaborative and agile team thrives in a fast-paced environment, and they're looking for a talented Frontend Engineer to join their growing development team. As a Frontend Engineer, you will play a key role in developing user-friendly, high-performance, and responsive web applications. You will work closely with product managers, backend engineers, and designers to create modern, feature-rich applications that integrate seamlessly with cloud-based services. You will leverage your expertise in React, TypeScript, and AWS to build scalable and maintainable solutions that power financial applications.
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