Lenny Fan
Software Engineer at Meta
Jersey City, New Jersey, United States
Summary
👤
Senior🎓
Top SchoolLenny Fan is a seasoned machine learning engineer with 10 years of experience building pricing and recommendation systems, currently contributing at Meta after leading pricing initiatives at Roadie. He has repeatedly delivered production-grade dynamic pricing models—one implementation saved an estimated $5M annually—and built end-to-end pricing infrastructure that serves multiple business applications. Lenny’s background blends applied math and engineering (M.S. in Applied Mathematics & Statistics, MEng in Engineering Management) with hands-on skills in Python, C#, SQL, Gurobi and optimization methods like mixed-integer programming. He pairs data-driven modeling with business consulting, routinely translating client data into pricing strategy and margin improvements. A practical problem-solver, he once accelerated an optimization model by 120x through targeted variable filtering and Big-M improvements, showing expertise beyond standard ML pipelines.
9 years of coding experience
8 years of employment as a software developer
Bachelor of Engineering (BE), Civil Engineering, Bachelor of Engineering (BE), Civil Engineering at National Taiwan UniversityJohns Hopkins University
Chinese, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (34)
networkx9
public-transport8
spatial8
geography8
spatial-data8
spatial-analysis8
overpass-api8
transport8
openstreetmap7
geospatial7
mapping-tools7
geopandas7
urban-planning7
osmnx7
gis7
Programming languages (2)
Github contributions (5)
LennyFan/MachineLearningNoteBook
Feb 2018 - Apr 2018
Contributions:17 commits, 53 pushes, 1 branch in 2 months
MengdanZhang0321/database
Nov 2016 - Dec 2016
Contributions:112 pushes, 1 branch in 1 month
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