Hi, I'm Raffa
Nuha Ra'ffa Raniyyah
Data Analyst
Highly motivated Data Analyst and Data Scientist with foundation in Python, SQL,
Machine Learning, and statistical analysis. Experienced in transforming operational,
supply chain, and inventory datasets into actionable insights.
Tangerang, Banten
Available Now

ABOUT ME
Transforming Data into
Actionable Insights
Experienced in transforming operational, supply chain, and inventory datasets into actionable insights, supported by hands-on industry roles achieving 99% inventory accuracy, 98% on-time production scheduling, and significant stock reduction efficiencies.
Skilled in predictive modelling, time series forecasting, data visualization, and end-to-end project execution using tools such as Pandas, Scikit-Learn, Tableau, and Streamlit. Complemented by a Full Time Data Science Bootcamp at Hacktiv8 and multiple real-world projects involving web scraping, forecasting, and productivity prediction. Adept at problem-solving, data-driven decision making, and cross-functional collaboration.
What Drives Me
Data Science
Python, SQL, Machine Learning, Statistical Analysis.
Education
Bachelor of Industrial Engineering,
Hacktiv8 Data Science Bootcamp.
Experience
1.5+ years in PPIC and Warehouse Management,
Data Science Bootcamp Projects.
WORK EXPERIENCE
Professional Journey
PPIC Staff
PT Intan Safety Glass
Tangerang, Banten
- Managed inventory data with 99% accuracy using ABC analysis, FIFO, and buffer stock optimization
- Analyzed historical sales data to forecast material needs, improving raw material efficiency to 97%
- Developed production schedules ensuring 98% on-time completion
- Performed dynamic buffer stock analysis using Google sheet and App Script for sales data over 3 years
Ops & Supply Chain Upstream Staff
eFishery
Pringsewu, Lampung
- Implemented FIFO and FEFO for all SKUs, ensuring stock accuracy via daily data validation
- Optimized warehouse layout to increase capacity from 120 to 132 pallets
- Operated and improved WMS, TMS, and OMS, reporting bugs for enhancement
- Generated accurate picking lists and sales orders to meet delivery schedules
Inventory Control Supervisor
PT IGP Internasional
Klaten, Jawa Tengah
- Led and improved performance of 25 employees by 40% through structured task division
- Implemented FIFO and FEFO, reducing old stock by 50% in 4 months
- Optimized allocation of 3M pcs of materials, reducing stored stock to 1M pcs
- Developed a 90% more accurate inventory database, improving tracking efficiency
PROJECTS
Featured Work
A showcase of my recent data science projects demonstrating expertise in
machine learning, data analysis, and predictive modeling.

Landscape Analysis of Data Job Market in Indonesia
Analyzed hiring trends for Data Analyst and Data Scientist roles using job postings scraped from Glints and Jobstreet. Performed data cleaning and EDA to identify job volume trends, location distribution, required skills, and salary patterns.

Garment Productivity Prediction System
Developed ML model to predict daily employee productivity using operational garment data. Conducted feature engineering, trained multiple ML models and evaluated using MAE, RMSE, and R².

BBCA Stock Price Prediction Using Time Series
Built time series forecasting model for BBCA closing prices using ARIMA/SARIMA, Prophet, and LSTM. Conducted preprocessing, stationarity checks, and error evaluation using RMSE and MAPE.
TECHNICAL SKILLS
Skills & Technologies
Programming & Analysis
Data Visualization
Machine Learning & AI
Libraries & Frameworks
Databases & Tools
ERP & Systems
Additional Competencies
CERTIFICATIONS
Professional Certifications
Full time Data Science
Hacktiv8 Bootcamp
October 2025 – January 2026
Score: 90%
Python (Basic)
HackerRank
December 2025
ID: 01ABB5E5562E
Intensive English Program
Kampung Inggris Language Center
September 2025
No.12998 / IEP.O / IX/ 2025
SQL (Intermediate)
HackerRank
July 2025
ID: 1C907F16DF48
Introduction to Data Science with Python
DQLab
August 2025
ID: DQLABINTP1TSQNNI
Management Supply Chain for Manufacture Industry
Kelas.com
November 2024
ID: CERT-7AFFA5C1
Quality Assurance Automation
Sanbercode Bootcamp
August 2023 – October 2023
No. 3683/122/SNBR/BOOTCAMP-KR/XI/2023
Mastering Data Analysis: Advanced Microsoft Excel
Edspert.id
July 2025
No. 22.489/WE-CERT/VII/2023
Education
Bachelor of Industrial Engineering
Universitas Pembangunan Nasional Veteran Yogyakarta
April 2022 Graduation
Yogyakarta, Indonesia
CONTACT
Get in Touch with Me
I'm always open to discuss exciting projects and new opportunities. Let's collaborate!
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