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I will build a production rag chatbot over your documents in python
Stephen
About this gig
A RAG bot that gives wrong answers is worse than no bot. I build retrieval that is measurable. I add an evaluation harness first, then tune chunking, embeddings, hybrid search, and re-ranking against real accuracy numbers, not vibes.
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 evaluation harnesses and model-promotion gates that let us ship LLM/ML changes safely and measurably. Today I ship LLM and RAG products solo on a live stack (Fly, Vercel, Neon).
What you get:
- - RAG over your docs, help center, or knowledge base, with accurate grounded answers
- - Better retrieval: smart chunking, strong embeddings, hybrid keyword and vector search, re-ranking
- - Lower hallucination via prompt and generation tuning
- - An eval setup so quality is measurable and you can keep extending it
- - Clean handoff docs
This is hands-on build plus consultation, not advice-only. Production code, not a notebook.
FAQ has clear inclusions and exclusions. 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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FAQ
Can you work on my live store without breaking it?
Yes. I duplicate your theme or work on a staging store first, test there, then push the fix live. Nothing goes to production until you have seen the screen-recorded proof.
What counts as a sync bug?
Anything where data is not moving correctly: Shopify inventory, orders or customers not syncing to your app, CRM or ERP; webhooks firing late, twice, or not at all; metafields not updating. I debug the whole path.
Do you do Liquid only, or backend too?
Both. I write Liquid (sections, snippets, variant and metafield logic) and I build or repair the backend it talks to: APIs, webhook handlers, Stripe billing, email, and Postgres pipelines.
What do you need from me to start?
Theme or Collaborator access (or a staging store), a clear description of the bug, and a screenshot or recording showing it. The faster I can reproduce it, the faster it is fixed.
What if the same bug comes back?
Every package includes a fix warranty of 7 to 30 days. If my fix regresses, I repair it free, no re-order needed.
