Data Scientist & Visualization Specialist

Turning data into insight.

Yulika
The data scientist in question

I'm a data scientist who lives at the intersection of rigorous analysis and clear storytelling. I build Tableau dashboards and analytical models that turn messy, real-world data into decisions people actually act on.

  • 5+ years with data
  • 40+ dashboards shipped
  • cups of coffee
01 Selected work

Dashboards & projects that
earned a second look.

Tableau dashboards and data-science projects where the right view of the data changed what people did next.

  1. 01

    Sales Performance Command Center

    An executive Tableau dashboard unifying revenue, pipeline, and quota attainment across regions — with drill-downs that let leaders self-serve answers instead of waiting on reports.

    • Tableau
    • SQL
    • BigQuery
    Dashboard 2025
  2. 02

    Logistics Geo-Heatmap

    A geospatial Tableau view mapping delivery density against on-time rates, surfacing three under-served zones that drove a route-planning overhaul.

    • Tableau
    • SQL
    • Mapbox
    Dashboard 2024
  3. 03

    Poverty Households Classification

    A supervised classification study predicting household poverty status from socioeconomic survey data, comparing Random Forest against Support Vector Machine models.

    • Python
    • scikit-learn
    • Random Forest
    • SVM
    Preview of Poverty Households Classification
    Project 2021
  4. 04

    Twitter Sentiment Analysis & Word Cloud

    Sentiment analysis of Indonesian COVID-19 tweets in R — mining public conversation during the early 2020 outbreak and visualizing the dominant themes as word clouds.

    • R
    • Sentiment Analysis
    • Text Mining
    Preview of Twitter Sentiment Analysis & Word Cloud
    Project 2020
  5. 05

    Dermate — Skin Disease Detection App

    An Android app that diagnoses infant skin diseases from a photo using image recognition — built to widen access to early healthcare screening when visiting a hospital isn't easy.

    • Deep Learning
    • Image Recognition
    • Android
    Preview of Dermate — Skin Disease Detection App
    Project 2021
02 About

A scientist's rigor,
an editor's eye.

My work usually starts with a question someone in the business can't answer with a spreadsheet — and ends with an interactive dashboard or model that makes the answer obvious.

I care about the unglamorous parts: clean data pipelines, honest statistics, and design that respects the reader's attention. A chart should remove doubt, not add it.

Competences

Visualization
Tableau Tableau Prep Dashboard design Data storytelling
Analysis & Modeling
Python pandas scikit-learn Statistics A/B testing
Data Engineering
SQL dbt ETL / data prep BigQuery
Ways of working
Stakeholder discovery Experiment design Technical writing