Sandeep Tammineni

Detail‑oriented Data Analyst with hands‑on experience in Excel, SQL, Power BI, Python, data cleaning, validation, and dashboard‑driven reporting across internship work and academic projects. Built analysis workflows on 10K+ to 50K+ records to identify trends, improve data quality, and support decision‑making. Strong fit for analyst roles involving data collection, dashboards, KPI tracking, and cross‑functional collaboration in a data‑driven environment.

Data Intern - Cognifyz Technologies - Visakhapatnam

(2025-12 - 2026-03)

• Collected, cleaned, and analyzed 10K+ records to support structured reporting and data quality improvement.
• Performed anomaly detection and validation checks that reduced data errors by 40%, improving reliability of outputs.
• Built Python‑based transformation workflows using Pandas and NumPy to prepare datasets for analysis and recurring reporting.
• Conducted exploratory analysis to identify trends, inconsistencies, and outliers across large datasets.
• Documented repeatable preprocessing and analysis steps to improve consistency and handoff clarity.

Post-Graduate Program in Data Science - Data Science - Vellore Institute of Technology, Bangalore (VIT) (2024-07 - 2026)

Bachelor of Computer Science and Engineering - Computer Science and Engineering - Andhra University College of Engineering, Visakhapatnam (2017-07 - 2021-08)