Yuni Astari

Beyond Numbers, Into Action.

Yuni Astari

I’m a Data Analyst

Insightful, Analytical, and Action-Oriented. With a strong foundation in mathematics and real-world analytics experience, I support teams in transforming complex data into clear, actionable insights that drive results.

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About Me

Data Analysis & Insights

Data Wrangling & Modeling

Data Visualization & Reporting

Strategic Data Consulting

Data Analyst with 2 years of hands-on experience and a strong academic foundation in Mathematics with a focus on Data Science. Demonstrated expertise in end-to-end data analysis processes, including data wrangling, statistical modeling, and translating complex data into actionable business insights. Proficient in R, Python, SQL, Tableau, and Power BI, and certified in industry-recognized programs by IBM, Google, Microsoft, Tableau, and CFI. Skilled in designing dashboards and reports, communicating insights effectively through compelling data storytelling, and aligning analytics with strategic goals through a collaborative, solution-oriented approach.

Where I've Learned & Grown

Education

Bachelor's Degree, Mathematics
Universitas Islam Negeri Syarif Hidayatullah Jakarta | Sep 2020 – Sep 2023
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  • Staff of Research and Development Department at HIMATIKA UIN Jakarta
  • Head of Mathematic Competition PARSIAL 2023
  • Silver Medalist at International Invention Competition for Young Muslim Scientist 2022
  • Bronze Medalist at International Invention Competition for Young Muslim Scientist 2023
  • 3rd Place at Komet 2022 held by University of Jambi
  • 3rd Place at Edelwis 2022 held by HIMFARNAS STIKES Nasional
  • Student Achievement Award 2022 awardee
  • Digital Talent Scholarship awardee for Database Foundation from Kominfo
  • Best graduate of UIN Syarif Hidayatullah at the 130th commencement
  • Best thesis in the field of science

Database Foundation
Talent Scout Academy | Mar 2023 – Jun 2023
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  • Participated in a structured technical learning program focused on relational databases and SQL.
  • Completed hands-on labs, live sessions, and guided practical exercises.
  • Passed all assessments including quizzes, mid-term, and final exams.
  • Engaged in interactive discussions with instructors and peers to deepen comprehension.

Experience

Data Analyst
PT Labdha Teknika Nusantara | Oct 2023 – Present
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  • Developed an automated quality control (QC) system using Microsoft Excel to validate clinical trial data from multiple sources, reducing manual review time and improving data consistency.
  • Maintained comprehensive QC logs and collaborated with CRO teams to identify, communicate, and resolve data discrepancies efficiently.
  • Designed and optimized ETL (Extract, Transform, Load) workflows to enhance clinical data integration, ensuring timely and accurate downstream analysis.
  • Automated the generation of CDISC-compliant SDTM and ADaM datasets using R, streamlining data preparation and minimizing human error.
  • Conducted statistical analysis for four clinical trials within less than two years, including end-to-end preparation of SDTM, ADaM, and define.xml files for regulatory submission.
  • Collaborated with bioinformatics and development teams to build CLARA (ComputationaL pARallel RNAseq Analysis), a specialized RNA-seq analysis platform.
  • Led data entry and management processes for multiple clinical trials, ensuring data quality and integrity from initial collection through final delivery.

Business Intelligence Analyst
PT Bank Muamalat Indonesia Tbk x Rakamin Academy | Project-Based Internship | Jun 2025
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  • Developed an interactive sales dashboard using Google BigQuery and Looker Studio to analyze 11,700+ transactions across 3,339 customers.
  • Designed and built an Entity Relationship Diagram (ERD) to define relationships between orders, products, customers, and regions for efficient querying.
  • Consolidated four fragmented datasets into a single master table using SQL-based data transformation techniques.
  • Identified business insights on revenue distribution, product performance gaps, and seasonal buying patterns.
  • Delivered data-driven recommendations on product segmentation, campaign timing, and market targeting strategies.

Junior Data Analyst
Taudata Analytics | Jul 2023 – Jul 2024
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  • Supported product development with data-driven decision-making
  • Performed data cleaning, formatting, and transformation
  • Ensured data accuracy and completeness through quality control
  • Acted as product tester, identifying bugs and UX issues
  • Conducted basic analysis using Excel and Google Sheets

Financial Analyst
BPR Artha Bersama | Feb 2023 – Mar 2023
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  • Analyzed financial data on deposits and credit accounts
  • Created interactive dashboards to communicate KPIs and trends
  • Built a financial dashboard using Looker Studio for better decision-making
Skills & Expertise

Data Analytics Methods & Techniques

  • Exploratory Data Analysis (EDA)
  • Data Extraction (CSV, Excel, SQL)
  • Data Cleaning & Preprocessing
  • Data Wrangling
  • Segmentation / Clustering
  • Cohort Analysis
  • Descriptive Statistics
  • Correlation Analysis
  • Hypothesis Testing
  • T-Test (Independent & Paired)
  • A/B Testing
  • ANOVA
  • Linear Regression
  • Logistic Regression
  • Multilevel / Hierarchical Analysis
  • KPI Monitoring & Performance Tracking

Programming & Scripting Languages

  • SQL
  • Python
  • R
  • HTML
  • CSS
  • Markdown
  • JavaScript

Data Analytics & Database Tools

  • Microsoft Excel
  • Google Sheets
  • Google Colab
  • RStudio
  • Visual Studio Code
  • SPSS
  • Azure Data Studio
  • Google BigQuery

Data Visualization Tools & Libraries

  • Tableau
  • Power BI
  • Looker Studio
  • R Shiny
  • ggplot2
  • plotly
  • seaborn
  • matplotlib
  • Excel Charts
Data & Analytics Portfolio
EquipUs Sales Performance Dashboard
View Dashboard

EquipUs Sales Performance Dashboard

A comprehensive sales dashboard in Power BI, offering deep insights into sales trends, customer behavior, and product performance.

Microsoft Power BI Power Query DAX Business Intelligence
View Dashboard
Finance Performance Dashboard
View Dashboard

Finance Performance Dashboard

An interactive Power BI dashboard designed to analyze a company's financial health, providing actionable insights on revenue, costs, receivables, and payables to optimize financial performance.

Power BI DAX Data Modeling Finance Metrics
View Dashboard
NovaMed Hospital Dashboard
View Dashboard

NovaMed Hospital Dashboard

A comprehensive Power BI dashboard for NovaMed, analyzing operational, financial, and patient satisfaction data to provide actionable insights for hospital management.

Microsoft Power BI DAX Healthcare Analytics Performance Dashboards
View Dashboard
Supply Chain Delay Analysis Dashboard
View Dashboard

Supply Chain Delay Analysis Dashboard

Developed an interactive Power BI dashboard to analyze and visualize supply chain delays, providing key insights into bottlenecks and performance metrics.

Microsoft Power BI Supply Chain Analytics DAX Performance Dashboards
View Dashboard
Trading & Analytics Dashboard
View Dashboard

Trading & Analytics Dashboard

An interactive dashboard to visualize trading data, track performance metrics, and identify key trends in financial markets.

SQL Tableau Financial Analysis
Tableau Public
Sales Performance Dashboard
View Dashboard

Sales Performance Dashboard

Interactive dashboard built to track key sales metrics, identify trends, and provide actionable insights for decision-makers using Tableau.

SQL Tableau Data Analysis
Tableau Public
Regional Performance Summary
View Dashboard

Regional Performance Summary

A Tableau dashboard providing an overview of regional performance, highlighting key metrics and geographical insights for business strategy.

Excel Tableau Geospatial Analysis
Tableau Public
Digital Sales Performance Dashboard
View Dashboard (Looker Studio)

Digital Sales Performance Dashboard

Created a comprehensive digital sales performance dashboard using Looker Studio to track key sales metrics, identify trends, and provide actionable insights for optimization.

Looker Studio Sales Analytics Google BigQuery
View Live
Employee Attrition Prediction
View Notebook (Colab)

Employee Attrition Prediction Using Tree-Based Machine Learning

Applied tree-based machine learning models to predict employee attrition, leveraging data analysis and predictive modeling techniques to identify key factors influencing turnover.

Python Machine Learning Tree-Based Models HR Analytics
View Notebook
Analyzing Wildfire Activities in Australia
View Code (Colab)

Analyzing Wildfire Activities in Australia

Exploratory data analysis project using Python to investigate patterns and trends in wildfire activities across Australia, generating key insights and visualizations.

Python Pandas Data Analysis
Colab Notebook
Create Visualizations using Matplotlib, Seaborn and Folium
View Code (Colab)

Visualizing Automotive Sales Trends in Recession Eras with Python

A project focused on generating various data visualizations using Python libraries such as Matplotlib, Seaborn for statistical plots, and Folium for interactive geospatial maps, to analyze historical trends in automobile sales during different recession periods.

Python Matplotlib Seaborn Folium
Colab Notebook
Predicting Precipitation at JFK Airport
View Code (GitHub)

Predicting Precipitation at JFK Airport Using Weather Data Analysis in R

Data analysis project in R to explore weather patterns and build a predictive model for precipitation at JFK Airport, showcasing statistical analysis and forecasting skills.

R Weather Data Predictive Modeling
GitHub
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My Certifications

IBM Data Analytics with Excel and R

IBM

Developed skills in data wrangling, statistical analysis, and reporting using Excel and R programming language.

Issued: Apr 2025
View Credential

Microsoft Power BI Data Analyst

Microsoft Certified

Demonstrated expertise in designing, building, and deploying scalable data models and reports using Power BI.

Issued: May 2025
View Credential

Data Modeling in Power BI

Microsoft Certified

Validated expertise in designing and implementing robust data models, optimizing data transformations, and creating effective relationships for advanced analytics in Power BI.

Issued: May 2025
View Credential

Data Visualization with Tableau

Tableau Learning Partner

Validated skills in connecting to data, building advanced visualizations, and creating interactive dashboards in Tableau.

Issued: May 2025
View Credential

Tableau Business Intelligence Analyst

Coursera

Developed expertise in designing and implementing advanced dashboards, performing complex data analysis, and translating business requirements into insightful visualizations using Tableau for strategic decision-making.

Issued: May 2025
View Credential

Google Advanced Data Analytics Professional Certificate

Google Career Certificates

Mastered advanced data analytics skills including statistical modeling, machine learning, and programming for complex data problems.

Issued: Jun 2025
View Credential

Advanced Tableau

Corporate Finance Institute (CFI)

Enhanced proficiency in advanced Tableau functionalities and best practices for compelling data visualization.

Issued: Jun 2025
View Credential

IBM Data Analyst Professional Certificate (Python)

IBM

Gained practical experience in data analysis using Python, including libraries like Pandas, NumPy, and Matplotlib.

Issued: Jun 2025
View Credential

Unilever Supply Chain Data Analyst

Unilever x Coursera

Gained practical skills in analyzing supply chain data, identifying inefficiencies, and supporting data-driven decisions to optimize logistics and operations.

Issued: Jul 2025
View Credential
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