VoidFlag

- Designed a custom schema language with a hand-written lexer, parser, and VS Code extension that catches flag

misconfiguration errors at edit time before reaching production

- Structured the project as a monorepo across a NestJS backend, Next.js dashboard, TypeScript SDK, and CLI, so a

single schema change propagates to all consumers automatically

- Delivered real-time flag updates over SSE with automatic polling fallback and reconnection logic, maintaining flag

delivery during network instability