Co-Founder & Product Lead at

Data science graduate building practical skills

Master's student in Data Science, learning analysis, statistics, and machine learning while preparing for my first data role.

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Work samples

A selection of coursework and practice projects that show my approach to data cleaning, analysis, and model building while I complete my graduate program.

  • FitLife Studio No-Show Analysis
    FitLife Studio No-Show Analysis

    Data-driven requirements and process redesign • Diagnosed, in Excel, a 20.2% class-booking no-show rate across 110,522 real bookings; identified lead time as the primary driver (4.6% same-day vs. 33.0% at 30+ days) and a reminder-timing confound in the existing process. • Authored a BRD, stakeholder analysis, and an as-is/to-be process redesign; recommendation projected to recover roughly 210 booked spots a month. GitHub: github.com/Skybroapp/fitlife-no-show-analysis

    ExcelGitHub
  • Cathay Pacific Group
    Cathay Pacific Group

    Darden Business Strategy capstone • Diagnosed the erosion of Cathay's Hong Kong hub as Greater Bay Area airports (83.6M, 66.5M passengers) overtook HKIA's 61M; recommended redirecting its HK$150bn fleet investment toward premium/cargo over its loss-making short-haul unit (HK$996M loss, up from HK$204M), staged via existing order-book flexibility.

About me

Master's student in Data Science, learning analysis, statistics, and machine learning while preparing for my first data role.

I am Raffano Rajasa, a graduate student pursuing a Masters in Data Science. I have limited professional experience and am building foundational skills in data analysis, statistics, and machine learning as I prepare to start my career.

Experience

Race Leader & Event Organizer

24-Hour Race · 2020

Co-Founder & Product Lead

SkyBro (Personal Project) · 2025 6 Present

English Language Tutor

In-Center & Online · 2021 6 2023

Education

Monash University, Indonesia

Master of Science in Data Science · Class of 2028

University of Maine at Presque Isle, USA

Bachelor of Arts in Business Administration · Class of 2026

YMCA of Hong Kong Christian College, Hong Kong

GCE A-Levels · Class of 2021

Skills

Data analysisStatistical modelingMachine learning basicsData cleaningPython
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FitLife Studio No-Show Analysis

Data-driven requirements and process redesign • Diagnosed, in Excel, a 20.2% class-booking no-show rate across 110,522 real bookings; identified lead time as the primary driver (4.6% same-day vs. 33.0% at 30+ days) and a reminder-timing confound in the existing process. • Authored a BRD, stakeholder analysis, and an as-is/to-be process redesign; recommendation projected to recover roughly 210 booked spots a month. GitHub: github.com/Skybroapp/fitlife-no-show-analysis

ExcelGitHub
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Cathay Pacific Group

Darden Business Strategy capstone • Diagnosed the erosion of Cathay's Hong Kong hub as Greater Bay Area airports (83.6M, 66.5M passengers) overtook HKIA's 61M; recommended redirecting its HK$150bn fleet investment toward premium/cargo over its loss-making short-haul unit (HK$996M loss, up from HK$204M), staged via existing order-book flexibility.

View all works