Software Engineer - HCM

IRIS Software Group is one of the UK's largest privately held software companies, trusted by 100,000+ businesses, schools and accountancy firms to keep their operations running. Our software pays 1 in 6 UK employees, supports over 12,000 schools, and is relied on by 91 of the top 100 UK accountancy firms. We're a Great Place to Work® certified employer, recognised for our commitment to well-being, inclusion and development - and we're growing fast.

IRIS provides integrated software across accountancy, finance, HR, payroll, education and business operations. Our approved company material confirms that IRIS supports more than 100,000 customers across 135 countries. As an L3 Software Engineer, you'll help develop the applications and data platforms behind that technology. You'll take ownership of small to medium-sized features through their complete lifecycle, delivering scalable, maintainable solutions and contributing to technical decisions within your feature scope.

It's a hands-on role with meaningful ownership, backed by experienced colleagues when you're tackling broader or more complex engineering challenges. You'll work with in an Agile, cross-functional environment, collaborating with Product Owners, QA, Design and fellow engineers to refine user stories and turn requirements into robust production software. Your contribution won't stop at writing code. You'll take part in code reviews, pair programming and knowledge sharing, mentor junior colleagues and contribute to technical and architectural discussions.

• Deliver full-stack features from analysis through to production.
• Build backend services using C#, .NET Core, ASP.NET Core Web APIs and REST.
• Develop with modern frontend frameworks such as Angular, React or Vue.js, alongside Type Script.
• Design and work with SQL Server and potentially CosmosDB or DynamoDB.
• Build and maintain microservices and robust APIs.
• Deploy containerised applications with Docker and Kubernetes using Azure or AWS.
• Extend CI/CD pipelines using Azure Dev Ops Pipelines or Git Hub Actions.
• Apply automated testing and TDD/BDD practices, plus security and quality controls.
• Use observability tools such as Data Dog, Application Insights or Amazon Cloud Watch.
• Use AI-assisted engineering tools critically and responsibly across design, development, testing and debugging.
• Mentor junior engineers and contribute to effective Agile delivery.

Impact:
Your work will influence millions globally. Growth:
Continuous learning and career development opportunities. Belonging: A culture that celebrates diversity and empowers every individual.

• You'll bring 2-4 years of professional software development experience and a track record of delivering software using Agile methodologies.
• You'll need strong .NET/C# backend development skills, SQL Server experience and knowledge of scalable web applications and cloud deployments.
• We're also looking for experience or working knowledge across CI/CD, containerisation, Infrastructure as Code, automated testing, observability and clean architecture/SOLID principles.
• Frontend experience with Angular, React or Vue.js is valuable, although a backend specialist with working frontend knowledge can also fit the role.
• You'll be comfortable owning routine work independently, working with guidance on more complex features and providing technical support or mentoring to junior colleagues.
• Experience with regulated or complex domains, event-driven architectures, GraphQL, real-time technologies, No
  
  SQL databases or modern UI architecture patterns would be advantageous rather than essential.

This role offers the combination of hands-on engineering ownership and continued development. You'll broaden your skills across full-stack…