Pioneered the development of a recommendation system for promotional offers within the GoPay app, utilizing collaborative filtering methodologies to enhance click-through and conversion rates, resulting in a 10-15% uplift compared to business as usual. Delivered an end-to-end ML solution aimed at optimizing personalized voucher allocation for GoPay Later, leading to a 25% increase in activation rates and realizing a 66% reduction in costs.

Engineered an ML classification model to identify illegal sales of processed food on e-commerce platforms as part of an academic thesis in collaboration with BPOM. Achieved an exemplary F1-score of 0.859 through innovative feature extraction techniques.

Mentored high school students in a data science initiative focused on a disease classification model and chatbot project, guiding a team to secure 2nd place in a competitive hackathon.