Founder + software engineer. I build end-to-end products—especially where real-world constraints (payments, compliance, operations) need to become clean, reliable software.
You can find a detailed review of my work here: https://github.com/jchaselubitz/Portfolio
Automates the "awkward middle" of rent collection for small landlords: bank-linked payment detection, receivables/arrears tracking, and tenant comms—without forcing tenants into a portal. Stack: Next.js (App Router) · React · TypeScript · Supabase (Postgres/Auth/Storage/Edge Functions) · Stripe Financial Connections · Twilio · Resend
A skills manager for AI coding agents that keeps instruction files consistent across projects (Claude Code, Cursor, Codex, Windsurf). Offline-first and auditable. Repo: https://github.com/jchaselubitz/overskill-cli Site: https://overskill.jacobchaselubitz.com
Mobile language learning with AI tutoring + spaced repetition. Stack: React Native · Expo · TypeScript · local-first storage · Gemini Repo: https://github.com/jchaselubitz/drill-app App Store: https://apps.apple.com/de/app/drill-learning/id6757759632?l=en-GB
Blogging with annotations + rebuttals to encourage thoughtful debate. Repo: https://github.com/jchaselubitz/conjecture Web: https://conject.io/
Platform for launching/managing private security offerings on Ethereum/Polygon. Frontend: https://github.com/cooperativ-labs/syndicate Contracts: https://github.com/cooperativ-labs/private-offering-contract
Mechanism to compensate early contributors via clear triggers (smart contracts + frontend). Original contract: https://github.com/cooperativ-labs/original-contributor-credits Continuous contract: https://github.com/cooperativ-labs/continuous-contributor-credits Frontend: https://github.com/cooperativ-labs/contributor-credits-frontend
Product/web: TypeScript · Next.js · React · Tailwind · Supabase · Postgres · Prisma Mobile: React Native · Expo Payments & comms: Stripe (incl. Financial Connections) · Twilio · Resend Infra/tooling: Docker · GitHub Actions · Nginx · DigitalOcean Smart contracts: Solidity · Ethereum / Polygon



