Building the Data Foundation for Automated Analytics
How data mesh, a governed semantic layer, and two purpose-built MCP servers deliver 100% metric accuracy and exploratory flexibility

Every engineering problem tells a story. Here, we share the breakthroughs, lessons, and experiments that shape how we think, how we build, and how we expand access to the global economy.
How data mesh, a governed semantic layer, and two purpose-built MCP servers deliver 100% metric accuracy and exploratory flexibility

Story of a 12x memory reduction in our design token system

A harness for measuring SAST scanner efficacy against ground truth you control.

Migrating the Square Android monorepo from Dagger 2 and Anvil to Metro

How we turned a risky UI rewrite into a validated, agent-driven migration program.

How we're using agentic reviewers as guardians to maintain system resilience

Migrating 450 Cash App backend repositories into a single scalable monorepo

Turning CI failures into clear actionable feedback

How Block Engineering codified tribal knowledge for AI

Measuring the Cognitive Complexity of Human-AI Collaboration
