Alex Mercer
Senior Software Engineer at Vercel
I build distributed systems and developer tools. Currently focused on edge computing, observability, and making infrastructure feel less like infrastructure. Previously at Linear and Stripe.
// selected projects
litestream-rs
Rust port of SQLite streaming replication. 3× lower memory, compatible wire protocol.
traceview
OTEL trace explorer with flame graphs. Self-hostable, sub-second query on 100M spans.
schema-drift
CLI to detect breaking API changes between OpenAPI specs. Used by 200+ teams.
pgroll
Zero-downtime Postgres schema migrations with automatic rollback and dual-write.