sachin kumar

Data Science / Data Analyst

Chennai 0+ yrs exp 81 · Excellent

About

Final-semester M.Sc. Data Science graduate with a strong quantitative foundation (B.Sc. Statistics) and practical experience developing scalable data pipelines, ETL workflows, and analytical dashboards. Hands-on expertise using SQL, Python, PySpark, and Databricks to extract, clean, and transform multi-source structured and semi-structured datasets, including healthcare and business data. Proven ability to partner with cross-functional teams, implement data quality validation checks, and build interactive Power BI/Tableau reports to drive executive decision-making.

Skills & Expertise (27)

SQL Intermediate

6.5/10

0.5

Years Exp

Python Intermediate

6.5/10

0.5

Years Exp

Pandas Intermediate

6.5/10

0.5

Years Exp

Technical Documentation Intermediate

6.0/10

0.5

Years Exp

Data Cleansing Intermediate

6.0/10

0.5

Years Exp

Exploratory data analysis Intermediate

6.0/10

0.5

Years Exp

statsmodels Intermediate

6.0/10

0.5

Years Exp

NumPy Cross-Functional Collaboration Feature Engineering Statistical Analysis Executive Reporting KPI Dashboards Seaborn Matplotlib Tableau Power BI scikit-learn Databricks Data Lifecycle Management Data Warehousing concepts relational databases Data Quality Assurance Schema Validation ETL PySpark Apache Spark

Work Experience

Data Science & Analytics Intern

NIELIT, Kolkata

Feb 2026 - Jul 2026

Developed and automated Python and SQL data processing pipelines to ingest, clean, and standardize large raw datasets for analytics workflows. Implemented automated data validation and quality assurance scripts, eliminating duplicate records and resolving missing-value discrepancies across source files. Built exploratory data analysis workflows and summary reports using Pandas and Statsmodels to deliver business and operational insights. Created detailed technical documentation covering data ingestion steps, business logic transformations, and query execution standards.