Senior Software Engineer (PHP)

Build software used by thousands. Influence technical direction. Mentor others.

IRIS is one of the UK’s largest privately held software companies and a major European provider of payroll and HR solutions. We’re now looking for a Senior Software Engineer to join our Dataplan team.

This is a hands on senior role combining deep technical contribution with delivery ownership and mentoring responsibility.

You’ll help shape and scale a cloud-based payroll and HR platform serving thousands of customers.

The Role

You’ll spend the majority of your time writing high quality code while also:

• Driving end-to-end feature delivery
• Partnering with Product on roadmap and prioritisation
• Mentoring and supporting junior engineers
• Leading best practice adoption (testing, CI/CD, observability)
• Contributing to architectural decisions
• Managing technical debt and platform health
• Supporting incident resolution and continuous improvement

Core:

• PHP (Laravel)
• ReactJS
• Relational databases
• Docker
• React Native
• MariaDB
• Jenkins
• GitLab

About You

• 5+ years’ experience in software engineering
• Strong experience building and shipping scalable web applications
• Comfortable in Agile environments with sprint-based delivery
• Strong knowledge of CI/CD and DevOps principles
• Experience supporting production systems
• Passion for mentoring and raising engineering standards

Bonus points for experience in regulated sectors (finance, health, govtech) or working with AI tools to improve engineering productivity.

What You’ll Get

• Opportunity to influence technical direction
• Exposure to enterprise scale systems
• Clear progression opportunities

If you’re a senior engineer who enjoys owning delivery, shaping solutions, and developing others — we’d love to hear from you.

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