Sebastian Cabrera Malik
Montreal,Canada
Summary
Data Scientist and Business Analytics Specialist with 4+ years of experience in consulting, banking, and retail sectors. Skilled in building and deploying machine learning models for both supervised (e.g., Random Forest, XGBoost) and unsupervised learning (e.g., KNN, clustering), as well as applying deep learning techniques such as Convolutional Neural Networks to leverage images data and TabNet for tabular data. Proficient in Python, SQL, and cloud-based tools such as AWS S3, AWS Glue, and Databricks for data processing.
Overview
6
6
years of professional experience
1
1
Certification
Work History
Data Scientist
Lila Solution Inc
Montreal, Quebec
05.2024 - 09.2024
- Developed demand prediction models for retail clients, driving operational improvements through data-driven insights.
- Designed pipelines to train and evaluate univariate (ARIMA, TBATS) and multivariate models (Lasso, Random Forest) for demand forecasting.
- Led the training of over 30 models for a swimwear-selling company.
- Developed Power BI dashboards for clients to visualize historical product demand and forecast future trends (1-12 months ahead).
Senior Data Analyst
GAMMA A | Boston Consulting Group
Bogotá, Colombia
07.2022 - 09.2023
- Part of BCG GAMMA, applying advanced analytics to solve complex business problems
- Developed Power BI and Tableau dashboards for clients across multiple industries, providing actionable insights from large datasets.
- Led the creation of a Power BI report for monitoring performance of employees in North America for a coffee beverage company
- Designed forecasting models and Power BI dashboards for material demand in construction projects for a major energy sector client.
Data Scientist
Banco Av Villas
Bogotá, Colombia
05.2020 - 06.2022
- Partnered with commercial teams to build machine learning models that optimize customer retention and drive business growth.
- Developed machine learning models (Random Forest, XGBoost) to prioritize customers for retention programs and loyalty schemes.
- Created models to enhance leasing credit campaigns, and identify opportunities for new customer acquisition.
- Utilized natural language processing techniques to extract meaningful insights from unstructured text data coming from the contact center calls
Consultant
Management Solutions
Bogotá, Colombia
09.2019 - 05.2020
- Collaborated on consulting projects for financial institutions, delivering impactful solutions based on data-driven insights
- Contributed to problem-solving and implementation of data solutions for financial clients in Colombia and the Dominican Republic
Liquidity and Market Risk Analyst
Banco Av Villas
Bogotá, Colombia
06.2018 - 09.2019
- Analyzed regulatory risk metrics and contributed to short-term decision-making in portfolio management
- - Measured and analyzed regulatory metrics like IRL, LCR, NSFR, and VAR
- - Created reports and dashboards to assist with short-term portfolio decisions and long-term interest rate management
- Https://www.avvillas.com.co/
Education
Master’s - Data Science and Business Analytics
HEC Montreal
Montreal, Canada12.2024
Bachelor - business management
Universidad De Los Andes
Bogota, Colombia05.2018
Skills
- Machine Learning: Supervised (Logistic Regression, Random Forest, XGBoost, SVM), Unsupervised (KNN, K-means), Time-Series (SARIMA, TBATS), and Deep Learning (CNNs, TabNet)
- Modeling and Optimization: Hyperparameter tuning, cross-validation, feature engineering, and model evaluation (ROC, AUC, precision-recall)
- Data Wrangling and Preparation: Data cleaning, preprocessing, and feature selection using Python (Pandas, NumPy), and SQL
- BI & Data Visualization: Power BI (Certified), Tableau
Certification
- Power BI Data Analyst Associate, Microsoft, 01/01/24
- Hyperparameter Optimization for Machine Learning, Udemy, 11/01/22
- Machine Learning with Imbalanced Data, Udemy, 11/01/22
- Spark and Python for Big Data with PySpark, Udemy, 08/01/22
- Clustering and Classification with Machine Learning in Python, Udemy, 08/01/22
- Data Science for All, Correlation One, 09/01/21, Graduated with honors
Hobbies and Interests
- I enjoy running in my free time, I participated in two 50k ultra marathons in 2023 (Italy and Mexico)
- While doing my masters, I decided to change sport, and managed to complete the Half Iron Man in Mont Tremblant in 2024
- I enjoy motivating the team to participate in sports and outdoor activities.
Languages
- Spanish, Native
- English, C1
- French, B1
Timeline
Data Scientist
Lila Solution Inc
05.2024 - 09.2024
Senior Data Analyst
GAMMA A | Boston Consulting Group
07.2022 - 09.2023
Data Scientist
Banco Av Villas
05.2020 - 06.2022
Consultant
Management Solutions
09.2019 - 05.2020
Liquidity and Market Risk Analyst
Banco Av Villas
06.2018 - 09.2019
Master’s - Data Science and Business Analytics
HEC Montreal
Bachelor - business management
Universidad De Los Andes
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