Manqiong Chen
Machine Learning Engineer Ii @Paytm Labs
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WORK HISTORY
Machine Learning Engineer Ii @Paytm Labs
Toronto, CA
Design and develop state-of-the-art machine learning models and algorithms to detect and prevent fraudulent activities, including but not limited to payment fraud, identity theft, account takeover, and scams.• Collaborate with cross-functional teams, including software engineers and product managers, to define the requirements and scope of fraud detection projects and develop solutions that align with business goals.• Conduct extensive data analysis, feature engineering, and data preprocessing to extract meaningful insights from large-scale, complex datasets to improve fraud detection accuracy and efficiency.• Evaluate, select, and implement appropriate machine learning techniques, algorithms, and frameworks, such as anomaly detection, to enhance fraud detection capabilities.• Build and maintain scalable and robust machine learning pipelines and infrastructure to support the deployment and monitoring of fraud detection models in production environments.
EDUCATION
University of Manitoba
Bachelor's degree, Statistics
University of Manitoba
Master of Science (M.Sc.), Statistics
SKILLS
ABOUT MANQIONG CHEN
Master’s degree in Statistics• 7+ years of experience as an MLE/data scientist/data analyst processing and analyzing large data sets• 2+ years of experience in statistical research• Strong knowledge of statistics, machine learning, deep learning, and data mining, including clustering, regression, and classification. Example packages: numpy, pandas, scikit-learn, LGBM, TensorFlow, Keras, etc.• Practical experience in predictive modeling (logistic regression, decision tree), NLP, and A/B testing• Proficient in statistical programming tools such as Python, R, and SQL; intermediate knowledge of Scala, SAS/BASE• Strong knowledge of Big Data tools (Spark, Hadoop, Cloudera), AWS cloud computing (EC2, EMR, S3, Redshift), and databases (Oracle, Redshift, MySQL)• Experience with visualization tools (Tableau, Matplotlib, ggplot2)• Experience with AI tools (Cursor, ChatGPT)• Good analytical and problem-solving skills• Excellent time management skills, leadership skills, and ability to work under pressure• Actively interested in the latest technologies, such as deep learning• Bilingual English and Mandarin
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