Open to opportunities

Alexandra Paez

@alexandrapaez

Message

Data Scientist at Banco Pichincha, developing expected-loss models and debit-card fraud detection solutions.

Ecuador

Message

At Banco Pichincha, I develop data-driven debit-card fraud detection rules and patterns, and built a predictive expected-loss model for customers without prior experience. I also optimized analytical data ingestion with PySpark, Databricks, and SQL.

Earlier at Banco Pichincha, I created automated Power BI dashboards and worked across data analysis and data quality. My experience also includes statistical research and university teaching, supported by a Master's in Actuarial and Financial Sciences.

Experience

Work history, roles, and key accomplishments

Current

Data Scientist

Current

Banco Pichincha

Jan 2024 - Present (2 years 9 months)

Designed and deployed analytical rules and detection patterns to reduce unrecognized debit card consumption claims. Developed and assembled a predictive expected loss model for the no-experience segment, calibrating regression and integrating decision trees for risk segmentation.

Stratio SQL Databricks PySpark regression Decision Trees Risk Modeling Data Pipelines

Senior Data Analyst

Banco Pichincha

Jan 2023 - Jan 2024 (1 year)

Accelerated strategic business decisions by creating and implementing automated executive reports and interactive dashboards in Power BI. Led data preparation, cleaning, classification, and transformation, ensuring 100% data consistency for models and analytical dashboards.

Power BI Data Analysis Data Cleaning data transformation SQL

Data Analyst

Banco Pichincha

Jan 2021 - Jan 2023 (2 years)

Designed and deployed Power BI visualization solutions that optimized KPI tracking and improved operational visibility. Executed data processing, cleaning, and structuring using SQL and analytical tools to respond accurately to business information requirements.

Power BI SQL Data Processing Data Cleaning KPI Tracking

Data Quality Specialist

Banco Pichincha

Jan 2018 - Jan 2021 (3 years)

Executed data quality monitoring and ensured metadata generation, ensuring compliance with load policies and information integrity in central repositories. Applied advanced data mining techniques and extracted key statistics that drove strategic decisions across multiple bank units.

Data Quality Data Mining Metadata SQL Data Governance

Analista de Microplanificación

Secretaría de Educación Superior (SENESCYT)

Jan 2017 - Jan 2018 (1 year)

Prepared technical and microplanning documents for evaluation, accreditation, and approval of career projects in higher technical and technological institutes. Executed audits and technical visits and participated in business dialogues to link academic offerings with productive sector needs.

Microplanning Technical Documentation Audit Stakeholder Engagement

Docente Universitario e Investigador

Universidad de los Andes (ULA)

Jan 2014 - Jan 2016 (2 years)

Led an epidemiological research project on suicide cases in the Tovar health district. Coordinated the propaedeutic course for the University Technician in Health Statistics, serving as thesis jury, academic tutor, and advisor for applied statistics degree projects.

Teaching Research Epidemiology Statistics Academic Advising

Estadístico

Enfoque (Investigación de Mercados)

Jan 2011 - Dec 2011 (11 months)

Increased sales by 50% for Laboratorios Valmorca in pharmaceutical chains through methodological design, sampling, and statistical market analysis. Trained technical staff in SPSS analytical use and proper questionnaire instrumentation for field interviewers.

SPSS Market Research Statistical Analysis Sampling Training