Applied AI Engineer · I build production LLM and agent systems, and I care most about the hard half: making the output verifiable, not just plausible. The model proposes. Tested code decides.
🔗 ethanhaas.dev · LinkedIn · ethanzhaas@gmail.com · Open to contract or full-time work
- Agentic systems · multi-agent orchestration (LangGraph, custom harnesses, MCP, tool use) built behind verification so improvements are earned, not hallucinated.
- RAG & retrieval · grounded answers with page-level citations and safe-refusal patterns, so every claim can be checked rather than trusted.
- LLM evaluation & guardrails · golden sets from expert-handled cases, accuracy measured not assumed, low-confidence output flagged to a human instead of shipped.
- Full-stack AI products · production B2B SaaS end to end (auth, multi-tenant data, billing, audit trails) and document intelligence where a wrong number has consequences.
self-improving-agent-harness · an autonomous multi-agent system that improves its own code behind a 7-tier verification gauntlet, including a fresh-context critic and a sealed holdout. Inner research loop ported from Udit Goenka's autoresearch (MIT, based on Karpathy's work); the meta-improvement architecture and verification stack are my own.
🟢 OBBBA Tracker · a live, paid B2B SaaS I build and operate. Tip & overtime tax-compliance for tipped-industry employers: automatic TTOC codes, FLSA overtime, W-2 Box 14 exports (ADP/Gusto/QuickBooks), multi-tenant access, billing.
financial-statement-extractor · verifiable document AI: government audit PDF to validated JSON, re-deriving every total (foot / crossfoot / articulate) with a golden-file test. 25 checks, 0 exceptions on a published report, and it catches an injected wrong figure.
grantledger · B2B SaaS that auto-categorizes nonprofit grant spending into 2 CFR 200 budget categories and generates audit-ready compliance reports. Next.js · Supabase · Stripe · OpenAI.
pacman-cpp · native C++20 + SDL2 Pac-Man built from scratch: co-op multiplayer, four ghost AIs, procedural audio, cross-compiled to an ARM handheld, with sanitizer/coverage/strict build presets and tests.
Python · LLM APIs (Claude / Gemini / OpenAI) · AI agents / LangGraph / MCP · RAG / vector search · LLM evaluation & guardrails · FastAPI · TypeScript / React / Next.js · C#/.NET · Docker · pdfplumber / PyMuPDF / OCR
B.B.A., Finance · University of Cincinnati (Cum Laude) · CFI FMVA & BIDA. I came up through finance and taught myself to build, which is why I come at every model output asking whether it's actually right, exactly what regulated, high-stakes work demands.
Open to Applied AI Engineer, Forward Deployed Engineer, and AI Software Engineer roles, remote · say hello.