Hello everyone 👋

My name is Ester Agustina Siahaan

Entry-level candidate with a strong interest in Data Analytics. Currently seeking an opportunity to apply my SQL, Python, Excel, Power BI, and Tableau skills while continuing to grow as a Data Analyst.

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About Me

Hello, my name is Ester Siahaan. I am a fresh graduate with a Bachelor's degree in Management. I have knowledge in business management, business analysis, and decision-making. I am currently looking for job opportunities that match my educational background and skills, especially in management, business administration, or business analysis. However, my main interest is in Data Analytics, and I am eager to build my career as a Data Analyst.

To achieve this goal, I have been learning Data Analytics independently and completing several personal data analysis projects using PostgreSQL (SQL), Microsoft Excel, Power BI, Tableau, and Python. Through these projects, I have practiced the complete data analysis process, including collecting data, cleaning and transforming data (ETL), analyzing data using SQL and Python, and creating dashboards and data visualizations to provide useful business insights.

I believe that my management background, combined with my growing data analysis skills, allows me to understand business problems and solve them using data. I am a fast learner, adaptable, detail-oriented, and always willing to learn new things. I am excited to start my professional career, contribute to business growth through data-driven decisions, and continue developing my skills as a Data Analyst.

4 Projects Completed
1 Internships
3.86 GPA

Education

My academic background and achievements.

Graduated: 2025

Sekolah Tinggi Ilmu Ekonomi Sultan Agung Pematangsiantar

Bachelor of Management (GPA: 3.86/4.00)

  • Studied business management, business analysis, strategic management, and business decision-making.
  • Completed coursework in Business Statistics, Business Research Methods, Marketing Management, Human Resource Management, Operations Management, and Entrepreneurship.
  • Developed Data Analytics skills through self-learning and personal projects using PostgreSQL (SQL), Microsoft Excel, Power BI, Tableau, and Python.

Experience

Field Work Experiences / Intern

Badan Kepegawaian & Pengembangan Sumber Daya Manusia August 2024 - August 2024
  • Observed and learned personnel administration and civil service management processes within a government institution.
  • Prepared a field study report on the work environment based on data collection and observations conducted during the internship period.
  • Assisted in organizing and maintaining administrative documents and official correspondence archives.
  • Supported the compilation and recapitulation of civil servant data for administrative records and reporting purposes.
  • Wrote a research report titled “Work Environment at the Civil Service and Human Resource Development Agency”.
Tools: Microsoft Excel, Google Sheets

Technical Skills

Data Analysis

DB SQL (PostgreSQL) Microsoft Excel (Advanced) Python (Jupyter) ETL (Extract, Transform, Load) Report Writing

Visualization

Power BI Tableau Google Data Studio

Others

Business Analysis SEO Optimization Email Marketing Social Media Marketing Teamworks Adaptability

Portfolio Projects

Completed Foodpanda Logo

Customer Behavior Foodpanda Analysis

An end-to-end data analytics project that explores Foodpanda customer transactions using PostgreSQL and Power BI to uncover customer behavior, sales trends, and business performance through interactive dashboards.

Problem: Business lacked clear insights into customer purchasing behavior, sales performance, customer churn, and restaurant performance.
Solution: Performed ETL, SQL analysis, and built an interactive Power BI dashboard to visualize key business metrics and support data-driven decision-making.
PostgreSQL Power BI Microsoft Excel SQL ETL EDA Data Visualization Dashboard
View Repository

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