Date posted
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Locations
Locations
Salaries
Date posted
Type of Company
Job types
64 API jobs in West Yorkshire + 20 miles
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Senior .NET C# Azure Developer
Senior .NET C# Azure Developer
Leeds Building Society
LS1, Leeds, LS1 4BJ
£57,000 to £65,000/Negotiable
You are highly experienced in C#, .NET framework, .NET Core, Azure, API's and SQL Server.
You are highly experienced in C#, .NET framework, .NET Core, Azure, API's and SQL Server.
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Java Technical Architect - Inside IR35
Java Technical Architect - Inside IR35
LA International Computer Consultants Ltd
M1, Manchester
£550 - £590 per day
*Java/J2EE 21, Python, 3.11 Springboot, Micronaut, Dropwizard, GraphQL, API Design.
*Java/J2EE 21, Python, 3.11 Springboot, Micronaut, Dropwizard, GraphQL, API Design.
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Lead the architecture and engineering of various architectures, including n-tier, micro services-based applications and event-driven architectures on both on-premises and AWS cloud, leveraging various PaaS/SaaS services including Lambda, API Gateway, Step Functions, Event Bridge, Aurora, DynamoDB, ECS, etc., to support large scale, high-throughput applications and enable real-time data processing. * Java/J2EE 21, Python, 3.11 Springboot, Micronaut, Dropwizard, GraphQL, API Design.
Lead the architecture and engineering of various architectures, including n-tier, micro services-based applications and event-driven architectures on both on-premises and AWS cloud, leveraging various PaaS/SaaS services including Lambda, API Gateway, Step Functions, Event Bridge, Aurora, DynamoDB, ECS, etc., to support large scale, high-throughput applications and enable real-time data processing. * Java/J2EE 21, Python, 3.11 Springboot, Micronaut, Dropwizard, GraphQL, API Design.
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Lead the architecture and engineering of various architectures, including n-tier, micro services-based applications and event-driven architectures on both on-premises and AWS cloud, leveraging various PaaS/SaaS services including Lambda, API Gateway, Step Functions, Event Bridge, Aurora, * Java/J2EE 21, Python, 3.11 Springboot, Micronaut, Dropwizard, GraphQL, API Design.
Lead the architecture and engineering of various architectures, including n-tier, micro services-based applications and event-driven architectures on both on-premises and AWS cloud, leveraging various PaaS/SaaS services including Lambda, API Gateway, Step Functions, Event Bridge, Aurora, * Java/J2EE 21, Python, 3.11 Springboot, Micronaut, Dropwizard, GraphQL, API Design.
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RESTful design and API Gateway tools (Apigee or equivalent)
RESTful design and API Gateway tools (Apigee or equivalent)
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Strong experience with REST APIs, Streaming API, CDC, and Platform Events.
Strong experience with REST APIs, Streaming API, CDC, and Platform Events.
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Experience of building useful, robust automated test suite to support a continuous deployment environment, implementing API's for internal and external use.
Experience of building useful, robust automated test suite to support a continuous deployment environment, implementing API's for internal and external use.
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Contract Backend Engineer
Contract Backend Engineer
BIOMETRIC TALENT
M3, Manchester
£400 per day £400 per day Outside IR35 - Fully Remote role
API Development: Develop and optimize APIs and tools to ensure seamless interaction between our platform and customer systems. * Proficiency in unit, integration, and API testing using Jest. * AWS Services: Lambda, SQS, S3, Cognito, EventBridge, CloudFormation, Fargate, SES, CodeBuild, CodePipeline, CloudFront, API Gateway, and more.
API Development: Develop and optimize APIs and tools to ensure seamless interaction between our platform and customer systems. * Proficiency in unit, integration, and API testing using Jest. * AWS Services: Lambda, SQS, S3, Cognito, EventBridge, CloudFormation, Fargate, SES, CodeBuild, CodePipeline, CloudFront, API Gateway, and more.
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Strong background in API development, cloud adoption frameworks, and modern architectures.
Strong background in API development, cloud adoption frameworks, and modern architectures.
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Senior Software Engineer .Net
Senior Software Engineer .Net
Coburg Banks Limited
Leeds, West Yorkshire
£65000 - £70000 per annum + Pension, Healthcare
Experience with API (RESTful/Socket/OpenQL), microservice architecture and development.
Experience with API (RESTful/Socket/OpenQL), microservice architecture and development.
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Integration Manager
Integration Manager
StepChange Debt Charity
LS2, Leeds, LS2 8ER
£70,000 per annum Plus full benefits package
You have proven expertise in system integration, API design, and AWS cloud-native technologies like Lambda, API Gateway, and Step Functions.
You have proven expertise in system integration, API design, and AWS cloud-native technologies like Lambda, API Gateway, and Step Functions.
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Familiarity with API-first design and OpenAPI documentation
Familiarity with API-first design and OpenAPI documentation
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Experience in API and BDD testing
Experience in API and BDD testing
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Lead Python Software Developer - AI MarTech SaaS- c£90K 4 Day Week
Lead Python Software Developer - AI MarTech SaaS- c£90K 4 Day Week
Recruitment Revolution
LS1, Leeds
Up to £90,000 DOE + Benefits
Ready to build smarter, faster, AI-driven solutions that transform digital marketing? Want a better work-life balance with our groundbreaking 4 day week model? At Ask BOSCO®, we're on a mission to help brands spend smarter with our award-winning predictive analytics platform. As our Lead Software Developer, you won’t just write code - you’ll shape the future of a high-growth MarTech product, lead technical strategy, and work directly with founders, data scientists, and clients to deliver impactful, intelligent solutions. If you're excited by ownership, innovation, and the chance to make a real mark in a scaling business, this is your opportunity - If you’re looking for a role where your voice matters, your technical leadership is valued, and your work directly influences product growth and innovation, we’d love to hear from you. Lead Python Software Developer
Ready to build smarter, faster, AI-driven solutions that transform digital marketing? Want a better work-life balance with our groundbreaking 4 day week model? At Ask BOSCO®, we're on a mission to help brands spend smarter with our award-winning predictive analytics platform. As our Lead Software Developer, you won’t just write code - you’ll shape the future of a high-growth MarTech product, lead technical strategy, and work directly with founders, data scientists, and clients to deliver impactful, intelligent solutions. If you're excited by ownership, innovation, and the chance to make a real mark in a scaling business, this is your opportunity - If you’re looking for a role where your voice matters, your technical leadership is valued, and your work directly influences product growth and innovation, we’d love to hear from you. Lead Python Software Developer
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Leveraging CloudFront, Route 53, and API Gateway for secure and scalable content delivery
Leveraging CloudFront, Route 53, and API Gateway for secure and scalable content delivery
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Lead Full Stack Engineer
Lead Full Stack Engineer
BIOMETRIC TALENT
M3, Manchester
Up to £90,000 per annum up to £90,000 - FULLY REMOTE UK ROLE
Deep expertise in TypeScript, ReactJS, Node.js, and RESTful API development. * Proficient in AWS cloud services especially Lambda, SQS, S3, Cognito, API Gateway, EventBridge, etc.
Deep expertise in TypeScript, ReactJS, Node.js, and RESTful API development. * Proficient in AWS cloud services especially Lambda, SQS, S3, Cognito, API Gateway, EventBridge, etc.
6 Month contract initially - Based: Hybrid - Bradford (Max 3 days p/w onsite) Rate: Market rates (via Umbrella company) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a Python Technical Architect. We are looking for a highly skilled Python Technical Architect to lead the design and development of scalable, high-performance applications and solutions. The ideal candidate will have strong technical leadership skills, deep Python expertise, and a passion for designing clean and robust architectures. Architect and design scalable, secure, and robust backend systems using Python. Define best practices and coding standards for development teams.
6 Month contract initially - Based: Hybrid - Bradford (Max 3 days p/w onsite) Rate: Market rates (via Umbrella company) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a Python Technical Architect. We are looking for a highly skilled Python Technical Architect to lead the design and development of scalable, high-performance applications and solutions. The ideal candidate will have strong technical leadership skills, deep Python expertise, and a passion for designing clean and robust architectures. Architect and design scalable, secure, and robust backend systems using Python. Define best practices and coding standards for development teams.
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Senior Developer (SPA Web Development)
Senior Developer (SPA Web Development)
DCV Technologies Limited
Spring Gardens, M2
From £55,000 to £70,000 per annum
Rest-based API interactions
Rest-based API interactions
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Senior Back-End Developer - C# / .NET / SQL Server * C#, .NET 6+, SQL Server, REST & GraphQL APIs, Azure, Git * Salary up to £65k * Onsite in Central Manchester * Excellent career progression - Who We Are - We're a collaborative tech team delivering robust, scalable SaaS products to a global customer base. Our developer-led culture values clean, maintainable code, innovation, and continuous learning. With an ambitious roadmap ahead, we're expanding our back-end capabilities and looking for a Senior Developer to help shape and deliver our next generation of features. Who We're Seeking - We're looking for a Senior Back-End Developer with deep expertise in C# (.NET 6+) and SQL Server, plus strong experience building and maintaining RESTful and GraphQL APIs. You'll work in a collaborative agile environment, contributing to the full development lifecycle from concept to de
Senior Back-End Developer - C# / .NET / SQL Server * C#, .NET 6+, SQL Server, REST & GraphQL APIs, Azure, Git * Salary up to £65k * Onsite in Central Manchester * Excellent career progression - Who We Are - We're a collaborative tech team delivering robust, scalable SaaS products to a global customer base. Our developer-led culture values clean, maintainable code, innovation, and continuous learning. With an ambitious roadmap ahead, we're expanding our back-end capabilities and looking for a Senior Developer to help shape and deliver our next generation of features. Who We're Seeking - We're looking for a Senior Back-End Developer with deep expertise in C# (.NET 6+) and SQL Server, plus strong experience building and maintaining RESTful and GraphQL APIs. You'll work in a collaborative agile environment, contributing to the full development lifecycle from concept to de
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Were looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following * Java 21 (or later) * Test Driven Development (TDD) and Behaviour Driven Development (BDD) * Large microservice architectures * Agile environments and pair programming * Implementing APIs for internal and external use * Building automated test suites in CI/CD environments * Unix/Linux operating systems * Communicating technical concepts to non-technical audiences * Jackson, JAX-RS, Mockito * ActiveMQ or Kafka
Were looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following * Java 21 (or later) * Test Driven Development (TDD) and Behaviour Driven Development (BDD) * Large microservice architectures * Agile environments and pair programming * Implementing APIs for internal and external use * Building automated test suites in CI/CD environments * Unix/Linux operating systems * Communicating technical concepts to non-technical audiences * Jackson, JAX-RS, Mockito * ActiveMQ or Kafka
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Our client is an established software company with over 20 years of experience delivering innovative digital platforms to a wide user base. They are looking for a Senior Software Developer to join a small, collaborative team working across the full Microsoft and Azure technology stack. This is a hands-on role offering the chance to work on both legacy and greenfield systems, contribute to architectural decisions, and support the continuous improvement of development practices. * Develop and maintain scalable, high-quality software using C#, .NET, and Azure * Lead on coding tasks and contribute to system architecture * Perform code reviews and mentor junior developers * Collaborate across teams to deliver business-critical solutions * Provide second-line technical support as needed * 5+ years in commercial software development
Our client is an established software company with over 20 years of experience delivering innovative digital platforms to a wide user base. They are looking for a Senior Software Developer to join a small, collaborative team working across the full Microsoft and Azure technology stack. This is a hands-on role offering the chance to work on both legacy and greenfield systems, contribute to architectural decisions, and support the continuous improvement of development practices. * Develop and maintain scalable, high-quality software using C#, .NET, and Azure * Lead on coding tasks and contribute to system architecture * Perform code reviews and mentor junior developers * Collaborate across teams to deliver business-critical solutions * Provide second-line technical support as needed * 5+ years in commercial software development
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Our client based in South Manchester is seeking an experienced C# Software Developer to join our team and contribute to developing our client's core product. As part of our small development team, you will maintain and enhance the platform, which includes a cloud-based back-office server, web front end, third-party system integration, and a remote Android app. The solution is written in C# and interacts with SQL databases. This role requires business awareness, excellent interpersonal and communication skills, and a customer-facing disposition. You must independently drive projects to completion with minimal supervision and demonstrate a proactive, positive attitude. * 3+ years of C# experience. * Cloud-based solutions, especially Microsoft Azure. * SQL Server, database design, and implementation, including Azure.
Our client based in South Manchester is seeking an experienced C# Software Developer to join our team and contribute to developing our client's core product. As part of our small development team, you will maintain and enhance the platform, which includes a cloud-based back-office server, web front end, third-party system integration, and a remote Android app. The solution is written in C# and interacts with SQL databases. This role requires business awareness, excellent interpersonal and communication skills, and a customer-facing disposition. You must independently drive projects to completion with minimal supervision and demonstrate a proactive, positive attitude. * 3+ years of C# experience. * Cloud-based solutions, especially Microsoft Azure. * SQL Server, database design, and implementation, including Azure.
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A growing technology business is looking for a Software Developer with experience in the Tridium Niagara Framework to join their team. This role will suit someone who enjoys working with Java, developing custom modules, and integrating systems into wider technology platforms. * Design, develop, and maintain software solutions within the Niagara Framework * Build and extend modules, drivers, and service components using Java * Integrate systems with APIs, microservices, and wider technology platforms * Contribute to innovation across new and existing projects in a collaborative team environment * Strong commercial experience in Java development * Hands-on experience with the Niagara Framework (Niagara 4 preferred) * Understanding of APIs, services, and modern development practices (Git, CI/CD, etc.) * Problem-solving mindset and a passion for developing new technologie
A growing technology business is looking for a Software Developer with experience in the Tridium Niagara Framework to join their team. This role will suit someone who enjoys working with Java, developing custom modules, and integrating systems into wider technology platforms. * Design, develop, and maintain software solutions within the Niagara Framework * Build and extend modules, drivers, and service components using Java * Integrate systems with APIs, microservices, and wider technology platforms * Contribute to innovation across new and existing projects in a collaborative team environment * Strong commercial experience in Java development * Hands-on experience with the Niagara Framework (Niagara 4 preferred) * Understanding of APIs, services, and modern development practices (Git, CI/CD, etc.) * Problem-solving mindset and a passion for developing new technologie
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Senior .NET Developer- Up to £65,000 - Were working with a growing technology business who are investing heavily in their engineering teams. They are now looking for a Senior .NET Developer to join their team and play a key role in building and supporting business-critical systems. What youll be doing * Designing and developing high-quality, scalable software solutions using the Microsoft stack * Building and maintaining APIs, services, and integrations * Working with databases and ensuring data-driven systems are efficient and reliable * Contributing to system improvements and helping modernise legacy applications * Collaborating with product managers, testers, and fellow engineers in an Agile environment * Supporting and mentoring other developers, and sharing best practices - What were looking for * Strong background in C# / .NET development (Framework and/or Core)
Senior .NET Developer- Up to £65,000 - Were working with a growing technology business who are investing heavily in their engineering teams. They are now looking for a Senior .NET Developer to join their team and play a key role in building and supporting business-critical systems. What youll be doing * Designing and developing high-quality, scalable software solutions using the Microsoft stack * Building and maintaining APIs, services, and integrations * Working with databases and ensuring data-driven systems are efficient and reliable * Contributing to system improvements and helping modernise legacy applications * Collaborating with product managers, testers, and fellow engineers in an Agile environment * Supporting and mentoring other developers, and sharing best practices - What were looking for * Strong background in C# / .NET development (Framework and/or Core)
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Remote WordPress Developer - PHP / JavaScript - Up to £55k + Benefits - A leading digital publisher in the sports sector is seeking a Remote WordPress Developer to join their growing team. You'll be working on high-traffic, large-scale WordPress websites, building new features, integrating APIs, and ensuring fast, reliable performance for millions of users. The Role * Develop, maintain, and optimise high-volume WordPress websites * Integrate third-party APIs to deliver new features * Write clean, efficient, and scalable PHP and JavaScript code * Work with modern front-end technologies (HTML5, CSS3, JSON, Gulp) * Use Git for version control and collaborate within an agile environment - Skills & Experience Required * Strong WordPress development experience (themes, plugins, custom builds) * Proficiency in PHP and JavaScript (Node.js desirable) * Solid understanding of H
Remote WordPress Developer - PHP / JavaScript - Up to £55k + Benefits - A leading digital publisher in the sports sector is seeking a Remote WordPress Developer to join their growing team. You'll be working on high-traffic, large-scale WordPress websites, building new features, integrating APIs, and ensuring fast, reliable performance for millions of users. The Role * Develop, maintain, and optimise high-volume WordPress websites * Integrate third-party APIs to deliver new features * Write clean, efficient, and scalable PHP and JavaScript code * Work with modern front-end technologies (HTML5, CSS3, JSON, Gulp) * Use Git for version control and collaborate within an agile environment - Skills & Experience Required * Strong WordPress development experience (themes, plugins, custom builds) * Proficiency in PHP and JavaScript (Node.js desirable) * Solid understanding of H
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