Door categorieën bladeren
Ontdekken
Fiverr Pro
Nederlands
$
USD
Yihong Z.
@david_zhai
Backend Reliability Engineer, Idempotent Webhooks, ETL and LLM Evals
Duitsland
Engels, Chinees, Duits
Over mij
I'm a backend engineer who fixes the failures that cost money: duplicate webhook charges, ETL jobs that drop or double rows, and LLM features that hallucinate in production.
What sets me apart: every service is backed by a public demo with tests and CI on my GitHub, so you can see proof before you order.
I work on:
- Exactly-once webhooks and payment idempotency
- Idempotent ETL and migrations that reconcile to the cent
- LLM eval harnesses that catch hallucinations
- Scheduling optimization with OR-Tools
Rescue jobs start with a paid diagnosis. I keep scope tight and ship tested code.
Skills
Yihong Z.
offline •
Bekijk mijn diensten
API en integraties
I will build a reliable stripe or authorize net webhook integration
Code review
I will do a secure code review of your ai generated web app with a fix report
