I am an independent builder based in Wales. My work focuses on practical, real-world software systems rather than polished products or commercial platforms.

I am particularly interested in systems that must remain reliable under imperfect conditions, including missing data, hardware limits and operational failure. Much of my work is iterative and long-term, prioritising correctness, auditability and local control over convenience.

Core areas

Health data and modelling I build local-first systems for continuous glucose monitoring, metabolic analysis and personal health data. The long-term aim is personalised modelling that learns behavioural and physiological patterns over time while remaining transparent and auditable.

Simulation and tooling I develop utilities around sim racing, telemetry and race preparation, focusing on tools that improve workflow rather than add complexity.

Self-hosted systems I prefer systems that run under direct control rather than depending on external cloud services. Reliability, observability and failure handling are core design priorities. A shared internal toolkit (griffiths-core) standardises build, test, deploy and release across all projects.

Welsh language and technology I am interested in improving the presence of Cymraeg within technical and computing spaces through translation and tooling.

Approach