Hannibal William.j

Data Analyst

Ballari, Karnataka, India 1+ yrs exp 83 · Excellent

About

MCA postgraduate with hands-on experience in data analysis, data cleaning, and data visualization — built on 10 months of professional experience as a Jr. Developer working with real business data (Excel-based school records, ERP reporting) and a self-driven track record of Python/SQL data analysis projects. Comfortable across the analyst toolkit: data cleaning and reporting with Excel and Pandas, querying with SQL, visualization with Matplotlib/Seaborn, and building dashboards that turn numbers into decisions — demonstrated end-to-end in Pereex, a customer-retention analytics platform built from scratch. Proficient in using AI tools (ChatGPT, Claude, Grok, Cursor, Lovable) to speed up data cleaning, documentation, and everyday workflow tasks.

Skills & Expertise (29)

HTML Intermediate

5.5/10

Years Exp

Lovable Intermediate

5.5/10

Years Exp

Cursor Intermediate

5.5/10

Years Exp

Copilot Intermediate

5.5/10

Years Exp

Perplexity Intermediate

5.5/10

Years Exp

Grok Intermediate

5.5/10

Years Exp

Claude Intermediate

5.5/10

Years Exp

ChatGPT Intermediate

5.5/10

Years Exp

GitHub Intermediate

5.5/10

Years Exp

Git Intermediate

5.5/10

Years Exp

PyCharm Intermediate

5.5/10

Years Exp

Jupyter Notebook Intermediate

5.5/10

Years Exp

Php Intermediate

5.5/10

Years Exp

Tailwind CSS Intermediate

5.5/10

Years Exp

Python Intermediate

5.5/10

Years Exp

JavaScript Intermediate

5.5/10

Years Exp

Dashboards Intermediate

5.5/10

Years Exp

Data Visualization Intermediate

5.5/10

Years Exp

Seaborn Intermediate

5.5/10

Years Exp

Matplotlib Intermediate

5.5/10

Years Exp

Pandas Intermediate

5.5/10

Years Exp

Reporting Intermediate

5.5/10

Years Exp

Data Cleaning Intermediate

5.5/10

Years Exp

Excel Intermediate

5.5/10

Years Exp

SQLite Intermediate

5.5/10

Years Exp

MySql Intermediate

5.5/10

Years Exp

SQL Intermediate

5.5/10

Years Exp

Java Beginner

3.5/10

Years Exp

Flask Beginner

3.5/10

Years Exp

Work Experience

Jr. Developer

Reviswell

Nov 2025 - Present

Build and maintain ERP system modules and school websites (HTML, Tailwind CSS, JavaScript, PHP), including reporting screens that surface school administrative data to end users. Own the cleaning and structuring of school data in Excel – standardizing records before they feed into ERP reporting modules, improving data accuracy for downstream reports. Test and validate web application and ERP features prior to release, catching data and logic errors before they reach production.

Jr. Developer - Intern

Reviswell

May 2025 - Nov 2025

Assisted in developing ERP modules and school websites using HTML, Tailwind CSS, JavaScript and PHP. Worked with school administrative data in Excel to support day-to-day reporting needs. Contributed to functional testing of internal software tools to verify data and feature reliability.