Fullstack & Senior Fullstack SWE

GCs routinely overbill 10-15% on change orders, and owners have no systematic way to catch it. CO-Ver is building software to help owners and developers review, validate, and challenge construction change orders before they pay them. The product combines document ingestion, scope/cost comparison, estimate review workflows, and LLM-assisted analysis with human estimators in the loop. MVP is nearing completion. We're targeting production by mid-July, self-funded, intentionally small, and working directly with customers in a painful, expensive, and underserved market. You'll work with the founders and fractional CTO, have a real voice in product and architecture decisions, and receive early-stage equity. Open roles: Fullstack SWE ($125k-$155k): 3+ years, strong TypeScript, React/Next.js, solid data modeling, interest in LLM-assisted workflows Senior Fullstack SWE ($150k-$175k): 5+ years, deep TypeScript, production Next.js/multi-tenant SaaS/LLM features, comfortable owning architecture decisions Nice to have: Convex, Clerk, Tailwind v4, PDF pipelines, construction domain knowledge Stack: Next.js · React 19 · TypeScript · Convex · Clerk · Tailwind v4 · Anthropic API · Vercel · GitHub Actions Email recruiting@co-ver.com with [hn] in the subject. Thank you!