Principal Software Engineer (Permanent)Salary: £65,000 - £75,000Location: UK-basediO Associates is supporting a large public-sector organisation. They are looking for a Principal Software Engineer to help shape the future of digital services. You''ll join a forward-thinking Head of Engineering who is transforming the team to deliver smarter, more efficient solutions for residents and staff.What you''ll be doingSetting the technical direction of software engineering and helping to define best practice.Taking a hands-on role in solution design and development.Collaborating closely with platform engineering to create robust, scalable services.Building new tools internally to improve access to services, automate processes, and enhance systems in housing and property services.What we''re looking forStrong software engineering expertise, ideally with JavaScript (React preferred) and knowledge of cloud platforms (AWS, Azure, Cloudflare).Experience in solution design and delivering end-to-end digital services.Background in consultancy Knowledge of containerisation tools (Docker or Kubernetes) is a plus.A proactive, "get things done" mindset with the confidence to challenge the status quo.Technically hands-on!Why join?Influence how digital services are built for a major public-sector organisation.Work under a leader with central government and defence experience, committed to investing in automation and engineering talent.Help create functional, resident-focused tools that make real-w