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BALAKARTHIKEYAN BS
Data Analyst
Technical Skills
Programming
Python (Pandas, NumPy, Matplotlib, Seaborn)
Databases
SQL, MySQL, SQL Server
BI & Logic
Power BI (DAX, Power Query), Tableau
Excel Engine
Pivot Tables, Forecasting, Power Pivot
ETL & Modeling
Data Architect, KPI Development
Soft Heuristics
Data Storytelling, Problem Solving, Communication
Certifications
- NPTEL – Design Thinking (2023)
- NPTEL – Intro to IoT (2023)
Professional Summary
Data Analyst skilled in Python, SQL, Power BI, Tableau, and Excel with strong experience in ETL workflows, KPI reporting, forecasting, and data modeling. Proficient in data cleaning, feature engineering, DAX, Power Query, and automation. Experienced in analyzing healthcare, automobile, and financial datasets. Adept at generating meaningful insights using dashboards and statistical methods including hypothesis testing, A/B testing, and advanced SQL (joins, CTEs, window functions). Strong communicator with proven success in improving reporting efficiency and accuracy.
Key Projects
Car Sales Multi-Axis Analysis
OCT 2024 – DEC 2024Python, SQL, Power BI
- Improved sales visibility by 32% via custom KPI architectures.
- Automated ETL pipeline, reducing manual cleaning latency by 40%.
- Identified seasonal demand patterns via time-series forecasting.
Healthcare Patient Analytics
JAN 2025 – PRESENTPython, Tableau
- Reduced data inconsistencies by 28% using systematic validation.
- Improved classification insights by 22% through statistical testing.
- Automated reporting circuits, reducing dashboard overhead by 50%.
Education
B.Tech – AI & Data Science
2024 – 2027Sona College of Technology, Salem
Diploma – ECE
2021 – 2024Thiagarajar Polytechnic College, Salem