I've contributed as a lead

I've contributed as a lead engineer to a multi-tenant HR SaaS platform, owning major backend architecture and full-stack feature delivery. I designed and built a workflow and approval engine supporting parallel execution, quorum-based approvals, delegation, SLA-based escalation, decision tables, and sub-workflows. I also built its visual workflow designer, template/document generation, forms, search, authorization, integrations, and observability capabilities. The platform uses TypeScript, Cloudflare Workers, Hono, PostgreSQL, Drizzle ORM, React, TanStack, Cerbos, and OpenTelemetry.