I will integrate an llm or ai feature into your app

S
stephenbae
S
stephenbae
Stephen

About this gig

Most "AI integrations" are a demo that breaks in production. I ship LLM features that survive real traffic: guardrails, evals, cost control, retries, and monitoring, the parts that actually matter.


I am a Staff/Principal engineer with 12+ years shipping production software. I led an 8-person platform team running over $5B/year in AI lending decisions, where I built the eval harnesses and model-promotion gates that let us ship LLM and ML changes safely. Today I ship LLM products solo on a live stack (Fly, Vercel, Neon).


What I do:

  • Integrate OpenAI, Anthropic Claude, or open models into your app with clean Python or TypeScript
  • - Proper prompt design, structured outputs, streaming, and error handling
  • - Retrieval and tool use where you need it, plus cost and latency controls
  • - Evals and monitoring so you know when output drifts, not just when it crashes
  • - Production code and a clean handoff, not a notebook

This is hands-on build plus consultation. Tell me your stack and what the feature should do, and I will scope it precisely.


No unlimited revisions, which keeps scope clean. Message me before ordering so we can scope it right.

Get to know Stephen

Stephen

Senior Full Stack Engineer Payments, Scrapers, APIs

  • FromUnited States
  • Member sinceApr 2015
  • Avg. response time7 hours
  • Languages

    English
Hi, I'm Stephen, a full-stack engineer with 12+ years shipping production software. I build and fix payments, scrapers, API integrations, deploy pipelines and AI features, all running in production. Most recently, I led an 8-person team at handling over $5B per year in lending decisions, and I founded an AI earnings platform covering 6,200+ stocks. I work in Stripe, web scraping (Playwright, anti-bot), API and webhook integrations, AI (OpenAI and Claude), and full-stack TypeScript, Python, React, NextJS, Node and FastAPI. I name the exact fix, give a turnaround, and prove it works.

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