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471 Permanent API jobs in South East + 10 miles
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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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Our innovative payments platform is built using API first, cloud native, microservice architecture written in dotnet core C# running on AWS using serverless infrastructure (AWS ECS + Fargate). * Strong experience with REST APIs and API testing strategies.
Our innovative payments platform is built using API first, cloud native, microservice architecture written in dotnet core C# running on AWS using serverless infrastructure (AWS ECS + Fargate). * Strong experience with REST APIs and API testing strategies.
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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
PREMIUM
GraphQL or API based services
GraphQL or API based services
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Luton - Salary up to 65k + Hybrid Working - You’ll be joining a fantastic business based near Luton as their Salesforce Developer. In the role, you will be involved in the development and customisation of Salesforce including extensions, configurations, and integrations. * Build Salesforce apps using LWC, AURA, Apex, APIs, Flows, and Triggers * Design UIs in Experience Cloud with Lightning and Visualforce * Optimize code and customize Service Cloud and Communities * Integrate Salesforce with external systems and services * Develop and maintain Apex classes, controllers, and triggers * Configure custom fields, objects, layouts, and automation * Use Salesforce DX and follow best practices for deployment * Support full dev lifecycle and create user documentation * Experienced with DevOps and Agile methodologies. * Skilled in Salesforce automation.
Luton - Salary up to 65k + Hybrid Working - You’ll be joining a fantastic business based near Luton as their Salesforce Developer. In the role, you will be involved in the development and customisation of Salesforce including extensions, configurations, and integrations. * Build Salesforce apps using LWC, AURA, Apex, APIs, Flows, and Triggers * Design UIs in Experience Cloud with Lightning and Visualforce * Optimize code and customize Service Cloud and Communities * Integrate Salesforce with external systems and services * Develop and maintain Apex classes, controllers, and triggers * Configure custom fields, objects, layouts, and automation * Use Salesforce DX and follow best practices for deployment * Support full dev lifecycle and create user documentation * Experienced with DevOps and Agile methodologies. * Skilled in Salesforce automation.
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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.
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.NET Risk and Analytics Developer, Assistant Vice President
.NET Risk and Analytics Developer, Assistant Vice President
State Street Corporation
South East
Competitive
Purpose of Role - We are looking for a C# .NET Developer with experience to join the TAROT (Trading and Risk Optimization Technologies) team in London. The TAROT team develops a cutting-edge analytics and revenue optimization platform which enables traders, client managers and senior management to manage risk, generate revenue opportunities, and analyze their businesses. The project has been a great success since being created approximately 5 years ago, and is in a stage of expansion into additional business lines as a result. Major Responsibilities - We require a developer with experience in the C# programming language and ideally ASP.NET Core, to help further expand the application into additional business lines. The candidate will have some experience working in financial services front-office / middle-office facing roles in the past, with a keen desire to further
Purpose of Role - We are looking for a C# .NET Developer with experience to join the TAROT (Trading and Risk Optimization Technologies) team in London. The TAROT team develops a cutting-edge analytics and revenue optimization platform which enables traders, client managers and senior management to manage risk, generate revenue opportunities, and analyze their businesses. The project has been a great success since being created approximately 5 years ago, and is in a stage of expansion into additional business lines as a result. Major Responsibilities - We require a developer with experience in the C# programming language and ideally ASP.NET Core, to help further expand the application into additional business lines. The candidate will have some experience working in financial services front-office / middle-office facing roles in the past, with a keen desire to further
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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
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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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Meet the Team - Ciscos Workforce Productivity Applications (WPA) team operates under the Digital Workplace (DW) organization and delivers best in class productivity solutions by integrating cloud applications and services to provide Cisco employees with a delightful digital workplace experience. We strive to enhance the employee experience by delivering the right mix of productivity solutions that make employees happy, simplify their experience, reduce the number of tools to choose from, and enable people to work seamlessly in a hybrid world. In line with WPA and DW's overarching objectives, we aim to reduce employee friction by 50% and integrate AI into 50% of our operations. We plan to achieve this by enhancing self-service capabilities, eliminating manual tasks, and minimizing support cases and operational overhead.
Meet the Team - Ciscos Workforce Productivity Applications (WPA) team operates under the Digital Workplace (DW) organization and delivers best in class productivity solutions by integrating cloud applications and services to provide Cisco employees with a delightful digital workplace experience. We strive to enhance the employee experience by delivering the right mix of productivity solutions that make employees happy, simplify their experience, reduce the number of tools to choose from, and enable people to work seamlessly in a hybrid world. In line with WPA and DW's overarching objectives, we aim to reduce employee friction by 50% and integrate AI into 50% of our operations. We plan to achieve this by enhancing self-service capabilities, eliminating manual tasks, and minimizing support cases and operational overhead.
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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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Were looking for a proactive and technically capable Business Applications Specialist to help support and evolve the cloud platforms that power our business. Join Roc as we continue our journey to modernise and enhance our internal systems, enabling better experiences for our colleagues and customers alike. In this role, youll play a key part in developing, integrating, and maintaining a wide range of business-critical applications from CRM and ERP to automation and analytics platforms. At Roc, we combine technical expertise with a genuine commitment to continuous improvement. Our lean and agile internal IT team partners closely with departments across the business to streamline operations, improve user experiences, and deliver value through technology. Youll work in a supportive environment where your ideas matter, your growth is encouraged, and the systems you help
Were looking for a proactive and technically capable Business Applications Specialist to help support and evolve the cloud platforms that power our business. Join Roc as we continue our journey to modernise and enhance our internal systems, enabling better experiences for our colleagues and customers alike. In this role, youll play a key part in developing, integrating, and maintaining a wide range of business-critical applications from CRM and ERP to automation and analytics platforms. At Roc, we combine technical expertise with a genuine commitment to continuous improvement. Our lean and agile internal IT team partners closely with departments across the business to streamline operations, improve user experiences, and deliver value through technology. Youll work in a supportive environment where your ideas matter, your growth is encouraged, and the systems you help
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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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If you have skills in API and Web product development, we need YOU to enhance our capabilities, become embedded within Responsiv, and deliver on technical projects. You should be self-motivated, proactive, and eager to learn, with strong API and web development skills.
If you have skills in API and Web product development, we need YOU to enhance our capabilities, become embedded within Responsiv, and deliver on technical projects. You should be self-motivated, proactive, and eager to learn, with strong API and web development skills.
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About Altitude Angel - The end of 2024 marked a decade of Altitude Angel a journey driven by innovation, collaboration and a shared vision of shaping future skies with the safe and unsegregated integration of uncrewed aviation. Since the beginnings in 2014, weve transformed the landscape of drone and airspace management, delivering future proof solutions to connect skies and communities safely and efficiently. By laying the foundations for the safe integration of Uncrewed Aerial Systems (UAS) into shared airspace, were paving the way for the future of Advanced Air Mobility (AAM) and fully integrated airspace. About the Role - Working with our talented technical and commercial teams, you will lead the ideation, design, delivery and iteration of our GuardianUTM platform, fulfilling our vision of Automated Flight Everywhere, For Everyone and enabling the safe integration
About Altitude Angel - The end of 2024 marked a decade of Altitude Angel a journey driven by innovation, collaboration and a shared vision of shaping future skies with the safe and unsegregated integration of uncrewed aviation. Since the beginnings in 2014, weve transformed the landscape of drone and airspace management, delivering future proof solutions to connect skies and communities safely and efficiently. By laying the foundations for the safe integration of Uncrewed Aerial Systems (UAS) into shared airspace, were paving the way for the future of Advanced Air Mobility (AAM) and fully integrated airspace. About the Role - Working with our talented technical and commercial teams, you will lead the ideation, design, delivery and iteration of our GuardianUTM platform, fulfilling our vision of Automated Flight Everywhere, For Everyone and enabling the safe integration
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Are you excited about Python, Jenkins, Dockers, Kubernetes, architecture, test driven development, API's and everything open source?
Are you excited about Python, Jenkins, Dockers, Kubernetes, architecture, test driven development, API's and everything open source?
Solid understanding of microservices and API's
Solid understanding of microservices and API's
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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Job Title: Back-End Developer - Location: Reading (Hybrid) Salary: Up to £60,000 DOE - Are you passionate about building powerful backend systems that drive real-world impact? Benefits! Hybrid Flexibility - Balance office time and remote work your way? Modern Tech Stack - Node.js, Python, .NET, cloud-native tools & more? Career Development - Ongoing training, mentorship, and progression? Innovative Projects - Get hands-on with meaningful, high-impact work * Build Robust Backends - Design and develop high-performance APIs and services * Data Management - Work with SQL and NoSQL databases (PostgreSQL, MongoDB, etc.) * Cloud Deployment - Deploy scalable apps via AWS, Azure, or GCP * Implement DevOps Practices - CI/CD pipelines, Docker, Kubernetes * Collaborate Across Teams - Work with product & frontend devs to deliver end-to-end solutions
Job Title: Back-End Developer - Location: Reading (Hybrid) Salary: Up to £60,000 DOE - Are you passionate about building powerful backend systems that drive real-world impact? Benefits! Hybrid Flexibility - Balance office time and remote work your way? Modern Tech Stack - Node.js, Python, .NET, cloud-native tools & more? Career Development - Ongoing training, mentorship, and progression? Innovative Projects - Get hands-on with meaningful, high-impact work * Build Robust Backends - Design and develop high-performance APIs and services * Data Management - Work with SQL and NoSQL databases (PostgreSQL, MongoDB, etc.) * Cloud Deployment - Deploy scalable apps via AWS, Azure, or GCP * Implement DevOps Practices - CI/CD pipelines, Docker, Kubernetes * Collaborate Across Teams - Work with product & frontend devs to deliver end-to-end solutions
FEATURED
API and Integration proficiency
API and Integration proficiency
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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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Full Stack .Net Developer (Umbraco CMS)
Full Stack .Net Developer (Umbraco CMS)
Hays Technology
Southampton, Hampshire
£45000 - £55000 per annum + £45000 - £55000
You'll be responsible for the ongoing development of their core digital developments, mainly based on .Net framework and API Integrations. Also Web API & Azure technologies.
You'll be responsible for the ongoing development of their core digital developments, mainly based on .Net framework and API Integrations. Also Web API & Azure technologies.
FEATURED
Preferably Cloud based solutions withWeb, API n Mobile testing.
Preferably Cloud based solutions withWeb, API n Mobile testing.
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Locations
- London
- South East London
- City of London
- Bromley
- Orpington
- South West London
- Central London
- Southwark
- Canary Wharf
- South Croydon
- Kent
- Brighton
- Hampshire
- Essex
- East Sussex
- Surrey
- Reading
- Portsmouth
- Dartford
- Southampton
- Luton
- Oxfordshire
- Canterbury
- Chelmsford
- Southend-On-Sea
- Milton Keynes
- East London
- Guildford
- Berkshire
- Tunbridge Wells
- Kingston Upon Thames
- East Anglia
- Hertfordshire
- Oxford
- Basildon
- Bexhill-On-Sea
- North West London
- Manchester
- Folkestone
- Birmingham
- West London
- East Midlands
- Bracknell
- North London
- Glasgow
- North West
- Leicester
- Midlands
- Newcastle Upon Tyne
- Harlow