Zack W.

I build and rescue AI-enabled SaaS products. If your Next.js or Supabase app, AI search flow, API integration, or LLM feature is stalled, I can trace the real failure, define the smallest useful milestone, and ship it with tests and release evidence.

Recent work includes:

• Rebuilding a property-search pipeline with FastAPI, structured intent, strict PostgreSQL filters, Pinecone retrieval, controlled fallbacks, and regression coverage.

• Shipping a React and Firebase operations PWA with authentication, Stripe billing, offline use, multilingual workflows, production migration, and launch support.

• Supporting a confidential SaaS and API platform through a six-month engagement covering webhooks, dashboard workflows, SMS and email integrations, testing, and releases.

• Building CodeTruss, a public TypeScript CLI that applies deterministic checks and signed receipts to AI-assisted code changes.

I am strongest when an existing product is partly built, difficult to trust, or blocked near launch. I map the user and data flow, reproduce the issue, separate model behavior from deterministic application logic, and make the smallest safe change that moves the product forward.

Core stack: TypeScript, React, Next.js, Node.js, Python, FastAPI, PostgreSQL, Supabase, Firebase, OpenAI, Anthropic, Gemini, Pinecone, Stripe, Playwright, Docker, and Vercel.

I use Claude Code and Codex to accelerate implementation, but I stay responsible for architecture, code review, tests, and release decisions.

Send the repository, Loom, or a short description of what is stuck. I will tell you the first thing I would verify and what a useful first milestone should deliver.