Lei Niu
Staff Software Engineer at Vanilla
Village of Scarsdale, New York, United States
Summary
👤
Senior🎓
Top SchoolLei Niu is a Staff Software Engineer with 12 years of experience building production-grade, deterministic Agentic AI systems and scalable SaaS platforms. He has led architecture and delivery at both startups and enterprises, designing LLM/RAG-based solutions, microservices, feature flags, webhooks, and data-centric APIs on AWS. At Haven Technologies he progressed from developer to chapter lead and product owner, driving team promotions and delivering underwriting, actuarial, and OCR products used in mission-critical workflows. More recently he architected customer-engagement AI services at BigCo. and now continues AI systems work at Vanilla. Trained as a Ph.D. biophysicist with computer science studies at Georgia Tech, he blends research rigor with pragmatic engineering to tame complexity and uncertainty in AI-driven systems. Outside work his GitHub motto “Think-Do” reflects a bias toward shipping reliable, measurable solutions rather than prototype-only experiments.
12 years of coding experience
10 years of employment as a software developer
Doctor of Philosophy (Ph.D.) Biophysics, Doctor of Philosophy (Ph.D.) Biophysics at University of Science and Technology of ChinaOther Computer Science, Other Computer Science at Georgia Institute of Technology
Stackoverflow
51reputation
12kreached
2answers
0questions
Github Skills (85)
postgresql10
javascript10
sql10
mysql10
huggingface-transformers10
monitoring9
tdengine9
financial-analysis9
database9
scalability9
cloud-native9
query-builder9
time-series9
oracle9
sqlite9
Programming languages (8)
Github contributions (5)
RockyNiu/nextjs-fastapi
Sep 2024 - Dec 2025
NextJS-FastAPI Fullstack Start Template
Contributions:4 reviews, 7 PRs, 51 pushes in 1 year 3 months
RockyNiu/ToDo
May 2014 - Mar 2015
Contributions:107 commits, 12 pushes in 10 months
reacttodolistmobile-web-appreact-nativeandroid
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.