Senior Software Engineer (PHP)

Permanent full time

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

Our Tech Stack

Core:

• PHP (Laravel)


• ReactJS


• JavaScript


• Relational databases


• Kubernetes


• Docker


• Linux

Desirable:

• 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.

Please note:

We occasionally close vacancies early in the event that we receive a high volume of applications. Therefore we recommend you apply as soon as possible.