Matt Keehan

Staff Engineer @Sainsbury\'s Digital, Tech And Data

London, GB

Staff Engineer for Media Agency, working across two major platforms in AdTech and Insights, supporting multiple internal teams and external consultancy providers- Driving architectural change across services to give each team clear domain ownership - breaking down a shared monolith into independently deployable, observable services, using a strangler-fig approach to peel off one area at a time- Partnering with Security to improve codebase health - introducing Sonarqube and Checkmarx standards, and a structured relationship with the Security team to keep repos safe and compliant- Leading technical direction for multiple squads: setting engineering standards, architectural guardrails, and shared libraries for consistency and speed- Coaching teams in modern delivery - Scrum, PI Planning, and ways of working, to create predictability while preserving autonomy- Formed and led a Platform Team as an enabler for all delivery squads, providing tooling, CI/CD pipelines, and observability foundations that unblocked progress across the area- Integrated and guided third-party partners, defining non-functional requirements, reviewing deliverables, and ensuring alignment with internal standards- Championed AI-assisted development, training engineers and managers to adopt GitHub Copilot and MCP servers- Introduced PI Planning, turning ad-hoc delivery into predictable, roadmap-driven increments with clear engineering ownership

Esher Sixth Form College

A levels

The Chessington School

GCSEs

University of Derby

BSc (Hons), Computer Science, 2:1