Senior Software Engineer

Salary: £75,000 - 75,000 per year

Requirements:

• Strong experience building reliable software in complex or regulated environments
• Confidence working across the full software development lifecycle
• Proven backend development experience using PHP and/or Python (or similar server-side languages)
• A quality-first mindset, including testing and operational awareness
• Experience guiding other engineers and influencing technical decisions
• Comfortable working with stakeholders outside of engineering

Responsibilities:

• Design and develop production-grade software for large-scale, complex systems
• Own features and improvements end-to-end, from design through to deployment
• Write clean, maintainable code with strong unit test coverage
• Review code and provide constructive feedback to other engineers
• Collaborate with product, architecture, and delivery stakeholders
• Ensure services are observable, supportable, and safely deployable
• Troubleshoot and resolve issues across the product lifecycle
• Contribute to continuous improvement of engineering standards and processes

Technologies:

• Backend
• IoT
• PHP
• Python
• Security
• Hardware
• PLC

More:

We are a market-leading IoT technology provider based in St Albans, partnering with sectors such as fire, security, utilities, and critical infrastructure. Our organization is backed by private investment and is continuing to scale its engineering capability as our products and customer base grow. We offer the chance to work on mission-critical technology in a stable and growing environment, alongside a strong engineering culture with high standards. The position includes a competitive salary and benefits.

last updated 36 week of 2026