Chithira S | Data Analyst Portfolio

I'm Chithira S, a Data Analyst with a passion for transforming raw data into meaningful insights. With hands-on experience in Power BI, Tableau, Excel, and SQL, I create interactive dashboards and reports that support data-driven decision-making.

I come with over 7 years of experience in Software QA, now fully focused on Business Intelligence, Data Visualization, and Supply Chain Analytics. I enjoy exploring how data can be used to optimize performance, improve strategies, and tell compelling stories.

This portfolio showcases some of my key projects built using tools I love working with!

Project Highlights & Process

Each project showcased here represents a real-world scenario where I applied data analysis techniques to extract insights and build impactful dashboards. The images displayed include snapshots of interactive visuals created using Power BI, Tableau, and Excel.

My Process:
Data Collection & Cleaning: Imported raw data from CSV, Excel, or SQL sources and performed cleaning using Power Query or SQL.

Data Modeling: Structured the data using relationships, measures, and calculated columns (DAX) to ensure consistency and performance.

Visualization: Designed clear, user-friendly dashboards using filters, slicers, KPIs, and charts tailored to business needs.

Analysis & Insights: Interpreted trends, patterns, and performance metrics to support better business decisions.

📂 Artifacts Created:

Interactive dashboards and reports
Data models and relationships
KPI visualizations and storytelling dashboards
SQL scripts for data wrangling and transformation

Amazon Sales Analysis

Capstone Supply Chain- Sales Analysis

Parker- Ticket 2 (Organisation analysis)

Parker- Ticket 3 (Customer analysis)

Capstone - Sales Analysis

Capstone- Profit & Stock Analysis

Capstone Sales Analysis (using SQL query)

Capstone Store Sales Analysis (using SQL query)

Zomato- Restaurant Analysis

Zomato- Customer Rating Analysis

In each project, I primarily took on the role of a Data Analyst, responsible for handling the full data analysis lifecycle—from data preparation to dashboard delivery.

I collaborated closely with:
Team Leads/Project Managers to understand business goals and define KPIs.

Developers to ensure smooth integration of data sources.

Peers in data teams for brainstorming, feedback, and design discussions.

✅ Project Outcomes:

Capstone (Supply Chain Dashboard): Helped improve inventory visibility and reduce forecasting errors by 30% through KPI-driven insights.

Zomato Analytics Project: Identified key customer behaviors and trends, enabling data-backed recommendations for user engagement strategies.

Amazon Sales Dashboard: Delivered insights on top-selling products and seasonal trends, aiding sales strategy planning.

Parker Business Insights: Created real-time engagement dashboards that enhanced reporting efficiency by 35% and enabled quicker decision-making by stakeholders.

These collaborations and outcomes reinforced my skills in communication, problem-solving, and delivering business-focused data solutions.

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