Sachin Tiwari

Bangalore, Karnataka 0+ yrs exp 71 · Very Good

About

Computer Science undergraduate skilled in turning messy data into dashboards, KPIs, and decisions stakeholders actually use. Proficient in Python, SQL (CTEs, joins, window functions), Power BI, and Tableau, with measurable results including a 35% drop in data inconsistencies and a 25% accuracy improvement. Comfortable owning requirement gathering through final reporting, working independently in remote, fast-paced environments.

Skills & Expertise (44)

Data Cleaning 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

SQL Intermediate

6.0/10

0.5

Years Exp

VS Code Intermediate

6.0/10

0.5

Years Exp

Google Sheets Intermediate

6.0/10

0.5

Years Exp

Jupyter Notebook Intermediate

6.0/10

0.5

Years Exp

NumPy Intermediate

6.0/10

0.5

Years Exp

MySql Intermediate

5.5/10

0.5

Years Exp

Matplotlib Intermediate

5.5/10

0.5

Years Exp

scikit-learn Beginner

5.0/10

0.5

Years Exp

Jira Beginner

5.0/10

0.5

Years Exp

Git Beginner

5.0/10

0.5

Years Exp

Seaborn Beginner

5.0/10

0.5

Years Exp

ETL Intermediate

5.0/10

0.5

Years Exp

Power BI Beginner

4.5/10

0.5

Years Exp

Streamlit Beginner

4.0/10

0.5

Years Exp

AWS Beginner

4.0/10

0.5

Years Exp

Data Storytelling Decision Making Critical thinking self-driven Adaptability Time management stakeholder communication Problem Solving Attention to Detail Analytical Thinking Data Governance Process Improvement Cross-Functional Collaboration Business Requirements Documentation Stakeholder Management Ad-hoc Analysis Java Microsoft Excel EDA KPI Tracking Requirement gathering Process Mapping A/B testing Root Cause Analysis validation Data Accuracy

Work Experience

Python Developer Intern

Codec Technologies Pvt. Ltd.

May 2026 - Jun 2026

Automated data cleaning and transformation workflows across CSV pipelines using Python, standardizing formats and handling missing values to significantly reduce manual data preparation time. Performed root cause analysis on output mismatches, tracing issues back to source-level data quality problems and documenting findings to prevent recurrence.

Data Analyst Intern

YuvaIntern

Dec 2025 - Mar 2026

Managed 6+ business datasets end-to-end — performing data cleaning, exploratory data analysis (EDA), and output validation while tracking conversion and drop-off metrics to ensure reporting accuracy. Presented data-driven findings to a 5-member cross-functional team each reporting cycle using Excel and Google Sheets, structuring insights to directly answer key business questions.