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34 Permanent API jobs in Northamptonshire + 20 miles
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We're looking for a highly skilled Senior Full Stack Developer with strong experience in C# .NET and React to join our growing tech team. You'll play a key role in designing, building, and maintaining robust, scalable web applications, working across the full stack to deliver high-quality solutions that drive real value. This is a hybrid role with two days a week based in the office. * Design, develop, and maintain web applications using C# .NET (Core/Framework) and React. * Collaborate with cross-functional teams to define, design, and ship new features. * Write clean, scalable, and testable code. * Troubleshoot and debug applications. * Mentor junior developers and contribute to best practices. * 5+ years of experience as a Full Stack Developer. * Strong proficiency in C# .NET (Core) and React. * Solid understanding of REST APIs, SQL/NoSQL databases, and version con
We're looking for a highly skilled Senior Full Stack Developer with strong experience in C# .NET and React to join our growing tech team. You'll play a key role in designing, building, and maintaining robust, scalable web applications, working across the full stack to deliver high-quality solutions that drive real value. This is a hybrid role with two days a week based in the office. * Design, develop, and maintain web applications using C# .NET (Core/Framework) and React. * Collaborate with cross-functional teams to define, design, and ship new features. * Write clean, scalable, and testable code. * Troubleshoot and debug applications. * Mentor junior developers and contribute to best practices. * 5+ years of experience as a Full Stack Developer. * Strong proficiency in C# .NET (Core) and React. * Solid understanding of REST APIs, SQL/NoSQL databases, and version con
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Senior Full Stack developer C# / React /Azure - Perm - hybrid
Senior Full Stack developer C# / React /Azure - Perm - hybrid
INFUSED SOLUTIONS LIMITED
Coventry (CV1)
£60000 - £70000 per annum
Full Stack Developer (C# / React / Azure) Location: Coventry - Hybrid (2 days onsite per week) Salary: £60,000 - £70,000 - Eligibility: Must be based in the UK - no visa sponsorship available - About the Company - Join a fast-moving digital team that's modernising enterprise systems and building next-generation web platforms from the ground up. This is a great opportunity to work on meaningful software projects, shape architecture decisions, and collaborate with a highly skilled engineering group in an environment that encourages innovation and autonomy. The Role - You'll be responsible for designing, developing, and deploying robust full-stack applications across cloud-based and containerised environments. From building APIs and crafting modern frontends to streamlining DevOps processes, you'll play a hands-on role in delivering reliable, scalable solutions that supp
Full Stack Developer (C# / React / Azure) Location: Coventry - Hybrid (2 days onsite per week) Salary: £60,000 - £70,000 - Eligibility: Must be based in the UK - no visa sponsorship available - About the Company - Join a fast-moving digital team that's modernising enterprise systems and building next-generation web platforms from the ground up. This is a great opportunity to work on meaningful software projects, shape architecture decisions, and collaborate with a highly skilled engineering group in an environment that encourages innovation and autonomy. The Role - You'll be responsible for designing, developing, and deploying robust full-stack applications across cloud-based and containerised environments. From building APIs and crafting modern frontends to streamlining DevOps processes, you'll play a hands-on role in delivering reliable, scalable solutions that supp
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£45,000 to 60,000 GBP - Bonus - Hybrid WORKING - Location: Northampton, East Midlands - United Kingdom Type: Permanent - Location: Northampton (Hybrid - 2 days per week on-site) Salary: £50,000 - £60,000 + benefits - Sponsorship: Not available - About the Role - We are seeking an experienced Business Analyst (AVP level) to join a growing technology-focused change function within a forward-thinking organisation. This position is ideal for someone who enjoys analysing complex problems, engaging with stakeholders, and driving impactful technology solutions. You will play a key role in gathering requirements, shaping solutions, and supporting the delivery of business-critical initiatives. Key Responsibilities * Lead business analysis for small projects or workstreams within larger transformation programmes. * Gather and document clear, actionable business and functional r
£45,000 to 60,000 GBP - Bonus - Hybrid WORKING - Location: Northampton, East Midlands - United Kingdom Type: Permanent - Location: Northampton (Hybrid - 2 days per week on-site) Salary: £50,000 - £60,000 + benefits - Sponsorship: Not available - About the Role - We are seeking an experienced Business Analyst (AVP level) to join a growing technology-focused change function within a forward-thinking organisation. This position is ideal for someone who enjoys analysing complex problems, engaging with stakeholders, and driving impactful technology solutions. You will play a key role in gathering requirements, shaping solutions, and supporting the delivery of business-critical initiatives. Key Responsibilities * Lead business analysis for small projects or workstreams within larger transformation programmes. * Gather and document clear, actionable business and functional r
PREMIUM
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Senior Frontend Developer
Senior Frontend Developer
Pathfinder Business Solutions Ltd
Milton Keynes (MK9), MK9 3QA
From £50,000 to £60,000 per annum Full Benefits Pack
REST-based API development
REST-based API development
High proficiency in SSRS, REST API, KPIs, development, integration, and customisation
High proficiency in SSRS, REST API, KPIs, development, integration, and customisation
Head of Finance Systems & Data
Head of Finance Systems & Data
Cambridge & Counties Bank Ltd
Leicester, Leicestershire
£80,000 - £100,000 a year
Technical Expertise: ERP (Workday), TM1, BI tools, API integration, automation.
Technical Expertise: ERP (Workday), TM1, BI tools, API integration, automation.
Data Automation: Develop automated data feeds (API/EDI) and use BigQuery to enhance data accuracy and streamline reporting.
Data Automation: Develop automated data feeds (API/EDI) and use BigQuery to enhance data accuracy and streamline reporting.
As a Senior BizOps Infrastructure Engineer you'll be a key player in managing our global, multi-site IT infrastructure, ensuring its smooth operation, and driving continuous improvement. You'll collaborate with 2 mid-level infrastructure engineers, a global Service Desk and Support team of 17, and a 20-member Information Security team. Your work will span a diverse technology stack, from end-user devices to cloud environments, with a focus on automation, security, and scalability. This is an exciting opportunity for a dynamic individual who thrives on meticulously designing IT architectural controls and standards, loves solving complex problems in a fast-paced environment, is passionate about cutting-edge technologies, and enjoys mentoring junior colleagues. * lead and deliver large-scale technical projects across end-user device fleets (Windows/macOS), networks, and
As a Senior BizOps Infrastructure Engineer you'll be a key player in managing our global, multi-site IT infrastructure, ensuring its smooth operation, and driving continuous improvement. You'll collaborate with 2 mid-level infrastructure engineers, a global Service Desk and Support team of 17, and a 20-member Information Security team. Your work will span a diverse technology stack, from end-user devices to cloud environments, with a focus on automation, security, and scalability. This is an exciting opportunity for a dynamic individual who thrives on meticulously designing IT architectural controls and standards, loves solving complex problems in a fast-paced environment, is passionate about cutting-edge technologies, and enjoys mentoring junior colleagues. * lead and deliver large-scale technical projects across end-user device fleets (Windows/macOS), networks, and
Are you looking for your next challenge and want to be part of a team that is hard working and driven to make a difference to our business! Were looking for a skilled Full-Stack Engineer with strong front-end expertise and solid back-end fundamentals to join our cross-functional digital product team. Youll work across web and app platforms in an agile environment, building scalable, high-performing solutions that delight users and create measurable business value. * Develop and maintain modern web applications using React, Next.js, TypeScript, and Apollo GraphQL. * Design and implement Java / Spring Boot microservices within AWS Cloud environments, integrating APIs and data layers. * Apply best practices in CI/CD, automated testing (JUnit, Mockito, Jest, Playwright) and cloud-native deployment using Docker, GitHub Actions, and Kubernetes.
Are you looking for your next challenge and want to be part of a team that is hard working and driven to make a difference to our business! Were looking for a skilled Full-Stack Engineer with strong front-end expertise and solid back-end fundamentals to join our cross-functional digital product team. Youll work across web and app platforms in an agile environment, building scalable, high-performing solutions that delight users and create measurable business value. * Develop and maintain modern web applications using React, Next.js, TypeScript, and Apollo GraphQL. * Design and implement Java / Spring Boot microservices within AWS Cloud environments, integrating APIs and data layers. * Apply best practices in CI/CD, automated testing (JUnit, Mockito, Jest, Playwright) and cloud-native deployment using Docker, GitHub Actions, and Kubernetes.
402 exact matches jobs are outside your preferred location
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Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
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Product management, within digital services or public sector environments experienced with Apigee (preferred) or similar API management platforms, including API publishing, monitoring, and access control. * Lead the end-to-end product lifecycle for the onboarding service, from discovery through delivery and iteration for Clients API providers. * Define the long-term vision and strategy for API products, focusing on the needs of developers, clinicians, and patients. * Proven experience in product management, ideally within digital services or public sector environments experienced with Apigee (preferred) or similar API management platforms, including API publishing, monitoring, and access control. * Lead the end-to-end product lifecycle for the onboarding service, from
Product management, within digital services or public sector environments experienced with Apigee (preferred) or similar API management platforms, including API publishing, monitoring, and access control. * Lead the end-to-end product lifecycle for the onboarding service, from discovery through delivery and iteration for Clients API providers. * Define the long-term vision and strategy for API products, focusing on the needs of developers, clinicians, and patients. * Proven experience in product management, ideally within digital services or public sector environments experienced with Apigee (preferred) or similar API management platforms, including API publishing, monitoring, and access control. * Lead the end-to-end product lifecycle for the onboarding service, from
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Lead Technical Architect
Lead Technical Architect
DWP Digital
Lee Bank, Birmingham (B1), B1 1HH
£75026 - £99836 per annum + plus 28.97% employer pension contributions
API Management - Experience designing and implementing APIs (REST / JSON, SOAP / XML, GraphQL), including API lifecycle management, API gateways, HTTP transport and security such as mTLS, OIDC (integration specialism)
API Management - Experience designing and implementing APIs (REST / JSON, SOAP / XML, GraphQL), including API lifecycle management, API gateways, HTTP transport and security such as mTLS, OIDC (integration specialism)
PREMIUM
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Senior Service Management & Integration Solution Architect
Senior Service Management & Integration Solution Architect
DXC Technology
London
Unspecified Competitive Salary & Benefits
Extensive knowledge and experience with modern ITSM tools, ITIL and API technologies, solutions, and architectures. * Service Integrations using API based policies
Extensive knowledge and experience with modern ITSM tools, ITIL and API technologies, solutions, and architectures. * Service Integrations using API based policies
PREMIUM
The successful candidate will demonstrate significant expertise in Microsoft Azure services, Web API, Azure App Service, .NET Core, and Visual Studio. * Design and implement scalable technology solutions using Web API, Azure App Service, and .NET Core to satisfy business requirements and enhance operational efficiency. * Define architectural patterns for microservices and API management. Azure API Development * Develop and maintain APIs using Azure API Management, Web API, and .NET Core to enable secure and efficient integrations. * Ensure API performance, security, and compliance with best practices. * Monitor and optimize application and API performance using Azure Monitor, Application Insights, and Log Analytics. * Expertise in Mic
The successful candidate will demonstrate significant expertise in Microsoft Azure services, Web API, Azure App Service, .NET Core, and Visual Studio. * Design and implement scalable technology solutions using Web API, Azure App Service, and .NET Core to satisfy business requirements and enhance operational efficiency. * Define architectural patterns for microservices and API management. Azure API Development * Develop and maintain APIs using Azure API Management, Web API, and .NET Core to enable secure and efficient integrations. * Ensure API performance, security, and compliance with best practices. * Monitor and optimize application and API performance using Azure Monitor, Application Insights, and Log Analytics. * Expertise in Mic
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Senior .Net Integration Developer
Senior .Net Integration Developer
Rise Technical
Maidenhead, Berkshire
£50000.00 - £70000.00 per annum + + Training + Holiday
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
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Technical Delivery Lead – Oracle Fusion & Enterprise Solutions
Technical Delivery Lead – Oracle Fusion & Enterprise Solutions
EFCI Group Ltd
Oxford (OX4)
From £80,000 to £90,000 per annum + £6500 travel allowance + 10% bonus
Oversee integration design and implementation, enforcing best practices across platforms like Oracle Integration Cloud (OIC) and API Gateways. * Expertise in integration technologies such as OIC, API Gateway, MuleSoft, or comparable integration services.
Oversee integration design and implementation, enforcing best practices across platforms like Oracle Integration Cloud (OIC) and API Gateways. * Expertise in integration technologies such as OIC, API Gateway, MuleSoft, or comparable integration services.
Extensive experience in API development both REST and SOAP. Experience with IntelliJ, Eclipse editor api.
Extensive experience in API development both REST and SOAP. Experience with IntelliJ, Eclipse editor api.
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You'll be working C# and .NET MAUI/Xamarin, working on mobile UI, offline sync, device integrations and secure API connections.
You'll be working C# and .NET MAUI/Xamarin, working on mobile UI, offline sync, device integrations and secure API connections.
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You'll be working C# and .NET MAUI/Xamarin, working on mobile UI, offline sync, device integrations and secure API connections.
You'll be working C# and .NET MAUI/Xamarin, working on mobile UI, offline sync, device integrations and secure API connections.
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Founding Full Stack Engineer (Python/TypeScript) – London - £180K
Founding Full Stack Engineer (Python/TypeScript) – London - £180K
Halian Technology Limited
London
Up to £185,000 per annum High founding member equity and Shares
API integrations, ETL, schema validation
API integrations, ETL, schema validation
Founding Full Stack Engineer (Python/TypeScript) – London - £180K
Founding Full Stack Engineer (Python/TypeScript) – London - £180K
Halian Technology Limited
London
Up to £185,000 per annum High founding member equity
API integrations, ETL, schema validation
API integrations, ETL, schema validation
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Significant expertise in API integration, containerisation, microservices and cloud platforms (AWS, O365, GCP)
Significant expertise in API integration, containerisation, microservices and cloud platforms (AWS, O365, GCP)
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Translate complex business requirements into detailed technical specifications, architectural designs, and API contracts. o Create and maintain comprehensive technical documentation, including code documentation, system designs, and API specifications. o 5+ years of experience in software development, with significant experience in cloud-based application development and API design. o Familiarity with cloud services relevant to application development (e.g., Azure Webapps, Azure Functions, Azure API Management, Azure Cosmos DB, Azure Databricks, Azure ML services for model consumption).
Translate complex business requirements into detailed technical specifications, architectural designs, and API contracts. o Create and maintain comprehensive technical documentation, including code documentation, system designs, and API specifications. o 5+ years of experience in software development, with significant experience in cloud-based application development and API design. o Familiarity with cloud services relevant to application development (e.g., Azure Webapps, Azure Functions, Azure API Management, Azure Cosmos DB, Azure Databricks, Azure ML services for model consumption).
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MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
FEATURED
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Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.