Hao Lei
Software Development Engineer at Amazon
Old Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolHao Lei is a Software Development Engineer with 8 years of experience applying machine learning and data science to real-world problems, currently building services at Amazon after roles at TD and fintech startup BrainFinance. He holds a MASc in Computer Science from Concordia, where he taught an Introduction to Machine Learning course and developed strong foundations in statistics, probability, data mining, and database design. Hao combines research-led expertise in NLP, pattern recognition, and recommender systems with hands-on production skills in Python, scikit-learn, TensorFlow, and PyTorch, and has honed practical model-building through Kaggle competitions and personal projects like a Netflix recommender. Comfortable across the ML lifecycle, he emphasizes efficient data collection and preprocessing, interpretable visualizations, and deployment-minded solutions. Now based in Toronto, he’s seeking full-time opportunities in Canada as a Data Scientist or Machine Learning Engineer.
8 years of coding experience
2 years of employment as a software developer
Master of Applied Science - MASc Computer Science, Master of Applied Science - MASc Computer Science at Concordia University
English, Chinese, French
Github Skills (40)
decision-tree-classifier10
knn-classifier10
svc9
linear-regression9
cross-validation9
classification-algorithm9
logistic-regression9
random-forest8
interpretable-machine-learning8
lime8
feature-selection8
adaboost7
classification7
datasets6
dimension-reduction5
Programming languages (3)
Github contributions (5)
leihao1/Comparison-of-Machine-Learning-Prediction-Models
Nov 2019 - Feb 2020
Compared different classification and regreesion models performance in scikit-learn by applying them on 20 datasets from UCL website.
Contributions:45 commits, 2 PRs, 11 pushes in 3 months
pythonguassian-processesknn-classifierclassificationsvc
leihao1/MachineLearningAlgorithms
Jan 2018 - Nov 2019
Contributions:159 commits, 94 pushes, 4 branches in 1 year 9 months
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