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Locations
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40 API jobs in South Yorkshire + 20 miles
Major IT & Digital are delighted to be working with one of UKs leading IT and telecom business operating across a well-established UK client base. The company has seen rapid growth over the last 4 years, coupled with 25 years specialist industry knowledge within the telecoms and managed services arena. Are you a forward-thinking Solutions Architect with a strong background in designing and building resilient solutions? A key requirement of the this role is the ability to design high quality end-to-end solutions that align with my clients business goals, ensuring scalable and secure system architecture with practical hands on delivery. The ideal person will have a solid understanding of network security principles and enterprise architecture design including strong cloud deployment knowledge (AWS or Azure) and DevOps principles experience.
Major IT & Digital are delighted to be working with one of UKs leading IT and telecom business operating across a well-established UK client base. The company has seen rapid growth over the last 4 years, coupled with 25 years specialist industry knowledge within the telecoms and managed services arena. Are you a forward-thinking Solutions Architect with a strong background in designing and building resilient solutions? A key requirement of the this role is the ability to design high quality end-to-end solutions that align with my clients business goals, ensuring scalable and secure system architecture with practical hands on delivery. The ideal person will have a solid understanding of network security principles and enterprise architecture design including strong cloud deployment knowledge (AWS or Azure) and DevOps principles experience.
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Advanced Power BI skills including DAX, M Query, Power Automate, Power Apps, and API integrations as well as SQL data modelling experience
Advanced Power BI skills including DAX, M Query, Power Automate, Power Apps, and API integrations as well as SQL data modelling experience
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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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RESTful design and API Gateway tools (Apigee or equivalent)
RESTful design and API Gateway tools (Apigee or equivalent)
Senior .Net Developer
Senior .Net Developer
Major Recruitment
S41, Chesterfield
From £50,000 to £55,000 per annum Bonus | Healthcare | Co. Pension | T
As part of continued expansion within the software development team my client has immediate requirements for a mid-level software developer to support the development of new features, new applications and API integrations. API Integration of 3rd party tools
As part of continued expansion within the software development team my client has immediate requirements for a mid-level software developer to support the development of new features, new applications and API integrations. API Integration of 3rd party tools
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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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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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Solid understanding of REST API design and development
Solid understanding of REST API design and development
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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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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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EIS Service and Support G7 Platform Operations Manager
EIS Service and Support G7 Platform Operations Manager
H M Revenue & Customs (HMRC)
UK
From £56,344 to £62,590 per annum
EIS provide platforms for delivering Application Programming Interface (API) access and File Transfer (FT) capability to HMRC Systems. We provide artefacts and support for API customers (software developers and Other Government Departments) to build and manage authorised software that seamlessly integrates with HMRC digital services.
EIS provide platforms for delivering Application Programming Interface (API) access and File Transfer (FT) capability to HMRC Systems. We provide artefacts and support for API customers (software developers and Other Government Departments) to build and manage authorised software that seamlessly integrates with HMRC digital services.
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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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Pay up to £52,442 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. Digital with Purpose. We are looking for an Identity Access Management Infrastructure Engineer to join our community of tech experts in DWP Digital. We're using fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in the UK, every day and at key moments in their lives. DWP is the UK's largest government department. We help people into work and make payments worth over £195bn a year to support and empower millions of people. The scale of what we do is extraordinary, and our purpose is unique. We'd love you to join us. What skills, knowledge and experience will you need? * Experience of working with Active Directory, Entra ID, MFA technologies.
Pay up to £52,442 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. Digital with Purpose. We are looking for an Identity Access Management Infrastructure Engineer to join our community of tech experts in DWP Digital. We're using fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in the UK, every day and at key moments in their lives. DWP is the UK's largest government department. We help people into work and make payments worth over £195bn a year to support and empower millions of people. The scale of what we do is extraordinary, and our purpose is unique. We'd love you to join us. What skills, knowledge and experience will you need? * Experience of working with Active Directory, Entra ID, MFA technologies.
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Pay up to £71,017, plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. Digital with Purpose. We are looking for a Senior Performance Test Engineer to join our community of tech experts in DWP Digital. We're using fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in the UK, every day and at key moments in their lives. DWP is the UK's largest government department. We help people into work and make payments worth over £195bn a year to support and empower millions of people. The scale of what we do is extraordinary, and our purpose is unique. We'd love you to join us. What skills, knowledge and experience will you need? * Significant demonstrable experience Performance Test Engineer / Lead in an agile team with a pragmatic, strategic mindset with focus on
Pay up to £71,017, plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. Digital with Purpose. We are looking for a Senior Performance Test Engineer to join our community of tech experts in DWP Digital. We're using fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in the UK, every day and at key moments in their lives. DWP is the UK's largest government department. We help people into work and make payments worth over £195bn a year to support and empower millions of people. The scale of what we do is extraordinary, and our purpose is unique. We'd love you to join us. What skills, knowledge and experience will you need? * Significant demonstrable experience Performance Test Engineer / Lead in an agile team with a pragmatic, strategic mindset with focus on
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Pay up to £71,017, plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. Digital with Purpose. We are looking for a Senior Performance Test Engineer to join our community of tech experts in DWP Digital. We're using fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in the UK, every day and at key moments in their lives. DWP is the UK's largest government department. We help people into work and make payments worth over £195bn a year to support and empower millions of people. The scale of what we do is extraordinary, and our purpose is unique. We'd love you to join us. What skills, knowledge and experience will you need? * Significant demonstrable experience Performance Test Engineer / Lead in an agile team with a pragmatic, strategic mindset with focus on
Pay up to £71,017, plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. Digital with Purpose. We are looking for a Senior Performance Test Engineer to join our community of tech experts in DWP Digital. We're using fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in the UK, every day and at key moments in their lives. DWP is the UK's largest government department. We help people into work and make payments worth over £195bn a year to support and empower millions of people. The scale of what we do is extraordinary, and our purpose is unique. We'd love you to join us. What skills, knowledge and experience will you need? * Significant demonstrable experience Performance Test Engineer / Lead in an agile team with a pragmatic, strategic mindset with focus on
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Full Stack Developer - React.js | Node.js | SQL Server - Location: Nottinghamshire, 2 days a week in office - Employment Type: Permanent - Salary: Based on experience - Due to continued success, I am looking for a skilled Mid-Level Full Stack Developer to join my clients growing team working on a modern, web-based platform. This is a hands-on role where you'll be building new applications and enhancing existing ones using React.js, Node.js, and SQL Server. The role is offered on a hybrid basis, minimum 2 days a week in their Nottinghamshire office * Develop and maintain full-stack web applications with a focus on performance and scalability. * Build responsive, data-driven UIs using React.js, consuming JSON APIs. * Create and enhance backend services using Node.js. * Work with complex business logic implemented in SQL Server stored procedures.
Full Stack Developer - React.js | Node.js | SQL Server - Location: Nottinghamshire, 2 days a week in office - Employment Type: Permanent - Salary: Based on experience - Due to continued success, I am looking for a skilled Mid-Level Full Stack Developer to join my clients growing team working on a modern, web-based platform. This is a hands-on role where you'll be building new applications and enhancing existing ones using React.js, Node.js, and SQL Server. The role is offered on a hybrid basis, minimum 2 days a week in their Nottinghamshire office * Develop and maintain full-stack web applications with a focus on performance and scalability. * Build responsive, data-driven UIs using React.js, consuming JSON APIs. * Create and enhance backend services using Node.js. * Work with complex business logic implemented in SQL Server stored procedures.
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Contract: Until end of 2025, rolling extensions - Inside IR35 - Were partnering with a leading financial services client in Sheffield who are seeking a Skilled Python Developer to join their team. Youll be instrumental in building scalable automation solutions to streamline and optimise database operations. This is a hybrid role (3 days per week in Sheffield), offering an initial contract until the end of the year with strong potential for rolling extensions. * Design, develop, and maintain automation solutions for database operations and rollouts * Build and integrate APIs for database management and automation workflows * Troubleshoot automation issues across scripting, APIs, and containerised environments * Proven experience in Python development & FastAPI * Strong knowledge of PostgreSQL database administration * Excellent problem-solving, debugging, and analytica
Contract: Until end of 2025, rolling extensions - Inside IR35 - Were partnering with a leading financial services client in Sheffield who are seeking a Skilled Python Developer to join their team. Youll be instrumental in building scalable automation solutions to streamline and optimise database operations. This is a hybrid role (3 days per week in Sheffield), offering an initial contract until the end of the year with strong potential for rolling extensions. * Design, develop, and maintain automation solutions for database operations and rollouts * Build and integrate APIs for database management and automation workflows * Troubleshoot automation issues across scripting, APIs, and containerised environments * Proven experience in Python development & FastAPI * Strong knowledge of PostgreSQL database administration * Excellent problem-solving, debugging, and analytica
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Leeds - 2x a week - Salary: £65k D.O.E - Fruition IT are working with a well-established tech-first business who are embarking on a complete technical transformation. This client is looking to bring in a team of Software Engineers to work on a bespoke software platform as part of the business growth. You will be responsible for working on backend services, focusing on platform engineering and building CI/CD pipelines. You will be developing in Node. Js and Typescript, and will have a strong focus on AWS Services, such as EKS, Dynamo DB and S3. What will I be doing? * Turn concepts and requirements into a bespoke software platform. * Work closely with the agile teams to meet software deliverable. * Support continuous integration to enhance deployment. * Build and deploy CI/CD pipelines. * Coaching and mentoring junior developers.
Leeds - 2x a week - Salary: £65k D.O.E - Fruition IT are working with a well-established tech-first business who are embarking on a complete technical transformation. This client is looking to bring in a team of Software Engineers to work on a bespoke software platform as part of the business growth. You will be responsible for working on backend services, focusing on platform engineering and building CI/CD pipelines. You will be developing in Node. Js and Typescript, and will have a strong focus on AWS Services, such as EKS, Dynamo DB and S3. What will I be doing? * Turn concepts and requirements into a bespoke software platform. * Work closely with the agile teams to meet software deliverable. * Support continuous integration to enhance deployment. * Build and deploy CI/CD pipelines. * Coaching and mentoring junior developers.
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My client, a dynamic and growing technology-led organisation, is seeking a skilled IT Support Engineer to lead the technical delivery of cloud-centric infrastructure projects across a diverse client base. This is a hands-on role focused on delivering scalable, secure, and efficient solutions using Microsoft Azure and modern networking technologies. * Deliver cloud infrastructure and transformation projects, primarily on Microsoft Azure. * Ensure projects meet cost, time, scope, and compliance targets. * Collaborate with support and delivery teams for smooth service transition. * Provide clear project updates and documentation. * Identify automation opportunities and process improvements using Azure-native tools. * Mentor junior team members and promote knowledge sharing. * Support strategic account planning and resource reporting.
My client, a dynamic and growing technology-led organisation, is seeking a skilled IT Support Engineer to lead the technical delivery of cloud-centric infrastructure projects across a diverse client base. This is a hands-on role focused on delivering scalable, secure, and efficient solutions using Microsoft Azure and modern networking technologies. * Deliver cloud infrastructure and transformation projects, primarily on Microsoft Azure. * Ensure projects meet cost, time, scope, and compliance targets. * Collaborate with support and delivery teams for smooth service transition. * Provide clear project updates and documentation. * Identify automation opportunities and process improvements using Azure-native tools. * Mentor junior team members and promote knowledge sharing. * Support strategic account planning and resource reporting.
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Location: Remote - Must Be UK Based?? Full Time | Flexible Working - Are you a Full Stack Developer with strong Python and JavaScript experience looking to make your mark on a fast-growing digital platform? We're seeking a passionate mid-level developer to join a small, agile team working on a cutting-edge online digital platform. You'll help shape and deliver the technical roadmap, scale existing infrastructure, and drive innovation across our product offering. Working with a high-performing in-house engineering team to drive the development of their technology suite, including web applications, data analytics platforms, AI tools, and internal systems. As our client continues to grow, we are seeking TWO passionate and dynamic Full Stack Engineers to join our forward-thinking team. We're looking for a versatile Full-Stack Engineer who is passionate about working acros
Location: Remote - Must Be UK Based?? Full Time | Flexible Working - Are you a Full Stack Developer with strong Python and JavaScript experience looking to make your mark on a fast-growing digital platform? We're seeking a passionate mid-level developer to join a small, agile team working on a cutting-edge online digital platform. You'll help shape and deliver the technical roadmap, scale existing infrastructure, and drive innovation across our product offering. Working with a high-performing in-house engineering team to drive the development of their technology suite, including web applications, data analytics platforms, AI tools, and internal systems. As our client continues to grow, we are seeking TWO passionate and dynamic Full Stack Engineers to join our forward-thinking team. We're looking for a versatile Full-Stack Engineer who is passionate about working acros
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Based in Leeds £60,000 - £70,000 + Benefits - This is a brand-new opportunity for a Lead Developer with Web/Front-End experience to join a data-driven software provider operating on a global scale. As the Lead Developer you will work with cutting and bleeding edge frontend technologies in the enterprise sphere. You will be working alongside an in-house team implementing new and emerging technologies to enhance the existing products which promote optimization and data-analysis for retailers. You will be responsible for building and maintaining real-time data analytics and web-browser applications (primarily front-end). The team are moving forward with a full migration project of their front-end applications to a more sleek & user-friendly app which you will play a key role in. You will be involved in the decision-making process for the technology-stack. Key Skills
Based in Leeds £60,000 - £70,000 + Benefits - This is a brand-new opportunity for a Lead Developer with Web/Front-End experience to join a data-driven software provider operating on a global scale. As the Lead Developer you will work with cutting and bleeding edge frontend technologies in the enterprise sphere. You will be working alongside an in-house team implementing new and emerging technologies to enhance the existing products which promote optimization and data-analysis for retailers. You will be responsible for building and maintaining real-time data analytics and web-browser applications (primarily front-end). The team are moving forward with a full migration project of their front-end applications to a more sleek & user-friendly app which you will play a key role in. You will be involved in the decision-making process for the technology-stack. Key Skills
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We're currently working with a growing SaaS company based in Leeds that are looking for a Senior Software Engineer skilled with C# ASP.NET, Angular, and SQL. This role will naturally grow in to a lead Engineer position as the team grows. You will be working to develop and build their new payroll project, which will be rolling out nationally, and then internationally. This role is based in Leeds, and it will require you to be onsite a minimum of two days per week. * Professional software engineering experience (typically 5+ years) using C# / ASP.NET (Core & Framework) and modern JavaScript/TypeScript frameworks, particularly Angular (v8+). * Significant understanding and practical experience with relational databases (MySQL /PostgreSQL preferred). * Expertise in version control systems (Git) and branching strategies (Gitflow).
We're currently working with a growing SaaS company based in Leeds that are looking for a Senior Software Engineer skilled with C# ASP.NET, Angular, and SQL. This role will naturally grow in to a lead Engineer position as the team grows. You will be working to develop and build their new payroll project, which will be rolling out nationally, and then internationally. This role is based in Leeds, and it will require you to be onsite a minimum of two days per week. * Professional software engineering experience (typically 5+ years) using C# / ASP.NET (Core & Framework) and modern JavaScript/TypeScript frameworks, particularly Angular (v8+). * Significant understanding and practical experience with relational databases (MySQL /PostgreSQL preferred). * Expertise in version control systems (Git) and branching strategies (Gitflow).
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