Hai Chau L.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Experienced Data Scientist/Data Analyst/Research Analyst/Quantitative Researcher with a demonstrated history of working in the field of Fintech, Hospitality, Education, Human Resources, and Economics. Skilled in Data Science, Machine Learning, Data Mining, Data Analysis, Statistical Modeling, Sampling, Data Collection - Designing electronic questionnaire, Data cleaning, Data processing. Strong research professional with almost 10 years working for research institutions and for the World Bank as well. International working experiences in Australia, Ireland, Japan, USA, and Vietnam. Strong background in Data Science, Mathematical Finance, Econometrics, Statistics, Machine Learning. Proficient in using Python, SQL, STATA, R, Tableau for statistical analysis, machine learning algorithms as well as SurveyCTO, SurveyGizmo (Alchemer)... for Data Collection/Data Entry.