Principal Engineer - Law Firm 3 days pw in London Lead the design, architecture, and development of innovative technical solutions, with a focus on Microsoft Azure, cloud-native technologies, and microservices architecture. Act as an internal SME across complex business and technology projects, providing expert third-line support and driving resolution of critical incidents. Own and evolve our approach to disaster recovery, change governance, and platform reliability. Engage directly with senior business stakeholders to understand needs, scope new digital services, and drive platform capability. Mentor team members and support knowledge sharing across the wider engineering and IT teams. Contribute to technical strategy, roadmap planning, and IT governance forums, providing thought leadership on emerging tech and tooling. What you''ll bring: A strong technical background, ideally educated to degree level or equivalent experience. Hands-on experience with a broad tech stack including: C#, JavaScript, Python Azure, Terraform, Kubernetes, Docker CI/CD pipelines (Azure DevOps, GitHub Actions, etc.) Front End frameworks (React, Vue, ASP.NET) API design (REST, JSON, XML) Database experience: SQL, NoSQL, vector databases AI integration: OpenAI, Gemini, and other LLMs Strong knowledge of agile, lean, and DevOps best practices. A collaborative, commercial, and solutions-oriented mindset - someone who thrives in a high-trust, cross-functional environment. Previous experience ..... full job details .....