Andrei Francis Castillo

S

Director of Data Science, Northwind Security - time series · Prophet · Python

Northwind Security
Manila, Philippines · PHT (UTC+8)
12+ years experience
Chulalongkorn University
English, Filipino, French
Messaging unavailable

Overview

Director of Data Science at Northwind Security, focused on demand forecasting. Reduced stock-outs by 16% in the first season. Most at home with time series and SQL.

Good reasons to reach out
  • Second opinions on Python decisions
  • Working sessions on Prophet
  • Questions about demand forecasting
Please don't message about
  • Unpaid work or spec projects
  • Generic networking requests
  • Courses and coaching offers

Travels often; replies within 48 hours

Skills
time seriesPythonSparkProphetSQL

Experience

  1. Director of Data Science
    Feb 2025 - Present
    Northwind Security · 1 yr 8 mo · Full-time · Manila, Philippines
    • Taught SQL to 95 non-analysts.
    • Wrote the metric definitions the leadership team reviews every week.
  2. Senior Data Scientist
    Aug 2023 - Feb 2025
    Huawei · 1 yr 6 mo · Full-time · Manila, Philippines
    • Replaced 20 hand-built dashboards with one metrics layer people trust.
  3. Data Analyst
    May 2021 - Aug 2023
    Shopee · 2 yr 3 mo · Contract · Manila, Philippines
    • Replaced 60 hand-built dashboards with one metrics layer people trust.
  4. Senior Data Scientist
    May 2018 - May 2021
    SoftBank · 3 yr · Full-time · Manila, Philippines
    • Built the forecasting models now used in 10 product decisions a quarter.
  5. Data Analyst
    Sep 2014 - May 2018
    Ashford Consulting · 3 yr 8 mo · Full-time · Manila, Philippines
    • Wrote the metric definitions the leadership team reviews every week.
    • Taught SQL to 173 non-analysts.

Projects

Demand forecasting benchmark
2024

Reproducible benchmarks comparing Python and time series on real workloads.

References

No references yet.

Education

  1. Chulalongkorn University
    BEng, Physics
    2002 - 2006

Details

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