Lengning Wei
Software Engineer at PayPal
Berkeley, California, United States
Summary
👤
Senior🎓
Top SchoolLengning Wei is a software engineer based in Berkeley with 11 years of cross-disciplinary experience bridging full-stack development, ML, and NLP, now working at PayPal. He holds an MEng from UC Berkeley and has built end-to-end systems from a Spring Boot Q&A community to production-ready NLP pipelines for clinical note annotation, achieving >95% accuracy on key tasks. His background includes academic and industry collaborations at UCSF where he designed CNN-BiLSTM models and an ML-enabled medical concept extractor with a feedback UI, as well as hands-on bioengineering work that led to award-winning hardware and synthetic biology projects. Comfortable from frontend UI to database migrations and model evaluation metrics (BLEU, Jaccard, Levenshtein), he blends strong engineering rigor with domain fluency in healthcare and biotech. Colleagues describe him as curious and practical—equally likely to prototype a Flask interface or optimize an AllenNLP pipeline—and he brings entrepreneurial grit from founding a hardware startup that secured venture support.
10 years of coding experience
3 years of employment as a software developer
Master of Engineering - MEng, Bioengineering and Biomedical Engineering, 3.6, Master of Engineering - MEng, Bioengineering and Biomedical Engineering, 3.6 at University of California, BerkeleyBig Data Summer Program, Big Data in Healthcare and BioMedicine, Big Data Summer Program, Big Data in Healthcare and BioMedicine at University of Wisconsin-MadisonBachelor of Engineering - BE, Bioengineering, 3.8, Bachelor of Engineering - BE, Bioengineering, 3.8 at Northeastern University (CN)
English, Chinese
Github Skills (2)
linux4
shell4
Programming languages (2)
Github contributions (5)
lengningLN/lengningLN.github.io
Aug 2018 - Sep 2018
Contributions:52 commits, 41 pushes, 2 branches in 1 month
lengningLN/LNSwipeCell
Aug 2018 - Nov 2018
Contributions:3 releases, 66 commits, 52 pushes in 3 months
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.