How we
build.
One playbook, three foundations: our shared engineering principles and defaults, the design principles every interface rests on, and the review playbooks and prompts we run day to day. One shared language for how Sigma builds, designs, and ships.
Engineering Standards & Practices
Our shared engineering principles and defaults. The Sigma Ten, our security, resilience, and supply-chain baselines, maturity tiers, and per-language appendices.
Design Guidelines & Fundamentals
Three sets of principles behind every interface: how perception groups what it sees, how type carries meaning and rhythm, and how motion communicates over time.
Playbooks & Prompts
How we review and operate — paired with the LLM-ready prompts that run those reviews. Eleven disciplines, from code review to web security to incident postmortems, as human guides and AI skills.