Job Title: Senior Full-Stack Software Engineer Location: Milton Keynes (office-based initially, hybrid after ~6 months) Salary: £70,000 £80,000 Bonus Benefits Hours: Full-time About the Role Bolt Technical are hiring exclusively for a growing SaaS business. This is a key senior hire to take ownership of a legacy LAMP (Linux, Apache, MySQL, PHP) platform, modernising it pragmatically while supporting a small, fast-moving team. The role offers significant influence over technical direction and a clear long-term path to CTO as the business scales. Key Responsibilities Own and develop a LAMP-based full-stack platform Audit, refactor, and improve legacy code without full rewrites Introduce modern front-end frameworks (React, Vue, Angular) Design and maintain APIs (REST / GraphQL) Improve performance, security, and scalability Contribute to DevOps, CI/CD, and cloud infrastructure Mentor junior developers and support best practices What Theyre Looking For Senior full-stack experience in a LAMP environment Strong PHP and MySQL skills Experience with modern JavaScript frameworks API design experience Comfortable in a hands-on, pragmatic, small-team environment Strong communication and problem-solving skills Package & Benefits £70,000 £80,000 salary DOE Discretionary bonus 25 days holiday Pension Medical and dental cover Hybrid working after onboarding period By applying to this job advertisement, you confirm you have read and understood our Data Privacy Statement and give Bolt Technical authorisation to hold your provided data. Thank you for your interest in this vacancy, which is being advertised by Bolt Technical, who are acting as an employment agency/business. Your application will be considered in competition with others and we will contact you within 5 working days.