Data Analysis
Cleaning, transforming and analyzing data to extract meaningful insights.
Data Analyst Portfolio
Hi! I Am Abhijeet Kumar Sinha
Data Analyst & Insights Specialist
Turning raw data into meaningful business insights using SQL, Power BI, Excel and Python.
SQL
Power BI
Excel
Python
Generative AI
AS
SQL
Data Analysis
Power BI
Dashboards
Excel
Data Cleaning
Python
Data Processing
1️⃣ Collect
Gathering structured & unstructured data
2️⃣ Clean
Preparing data using Excel & Python
3️⃣ Analyze
Using SQL to uncover patterns & insights
4️⃣Visualize
Creating dashboards in Power BI
About Me
I turn data into decisions.
I am an aspiring Data Analyst skilled in SQL, Power BI, Excel, and Python. I focus on analyzing data, uncovering patterns, and delivering insights that support real business decisions.
My goal is simple — transform raw data into clear, actionable insights that create impact.
🔍 Data Exploration
Cleaning, transforming, and understanding raw datasets.
📊 Insight Generation
Finding trends and patterns that matter to the business.
📈 Data Visualization
Building dashboards that tell a clear story.
What I Focus On
- ✔ SQL-based data analysis
- ✔ Power BI dashboards
- ✔ Business insights & reporting
- ✔ Data cleaning using Excel & Python
My Approach
Data → Insights → Decisions
Skills
My awesome analytics stack
Business Intelligence
Building dashboards and reports for business decision-making.
Data Visualization (Python)
Creating visual insights using Python libraries.
Databases
Working with relational databases and writing efficient queries.
Data Visualization
Creating visual stories using charts and dashboards.
Version Control
Managing projects and code using Git and GitHub.
AI Tools
Using AI to speed up analysis, coding and productivity.
Business Skills
Understanding business problems and delivering actionable insights.
Statistics & Probability
Applying statistical concepts to analyze data and support data-driven decisions.
Projects
Technical Case Studies
A deep dive into my analytical process, from raw data to actionable insights.
01
Python & Predictive Analytics
Telecom Customer Churn Deep-Dive
Python Pandas Seaborn Matplotlib
The Challenge
High attrition rates among fiber-optic customers were hurting the bottom line. The goal was to identify the primary drivers of churn using statistical evidence and visualization.
Technical Execution
- Cleaned and pre-processed 7,000+ records using Pandas, handling missing values and data type inconsistencies for a clean modeling dataset.
- Conducted Exploratory Data Analysis (EDA) to uncover a 25% higher churn rate associated with month-to-month contracts.
- Built correlation heatmaps and distribution plots in Seaborn to visualize the impact of monthly charges and technical support quality on retention.
02
Python EDA & Power BI Dashboard
Gurgaon Real Estate Market Analysis
Python PowerBI Pandas Seaborn
The Challenge
Buyers, investors, and developers needed clear, data-backed insights into Gurgaon’s residential real estate market, including premium localities, pricing trends, builder influence, property type performance, and RERA impact.
Technical Execution
- Cleaned and prepared real estate listing data using Python and Pandas by standardizing columns, converting numeric fields, removing duplicates, and fixing inconsistent categorical values.
- Performed Exploratory Data Analysis to compare locality-wise pricing, rate per sqft, BHK configuration, property type, builder pricing, and RERA approval impact.
- Built a professional Power BI dashboard with KPI cards, slicers, and interactive visuals to present market insights in a business-friendly format.
Certifications
Learning backed by credentials
Professional validations of my technical expertise in Data Science and Analytics.
01
Data Science Certification
Certified Data Science Professional
Verified
Issuing Organization
Odin School · Issued Dec 2025
Credential ID: ODIN1005681Key Learning Areas
- Completed structured training in Python, SQL, statistics, and data analysis fundamentals.
- Worked on data cleaning, exploratory data analysis, and visualization using real-world datasets.
- Gained foundational exposure to machine learning concepts as part of the curriculum.
02
AI-Powered Analytics
Ultimate Job-Ready Data Analytics
Completed
Issuing Organization
CodeWithHarry · Issued Apr 2026
ID: CWH-DATA-ANALYTICS-18ESA4W9Key Learning Areas
- Completed end-to-end Data Analysis training using Python and advanced analytics libraries.
- Learned practical implementation of AI tools to support data cleaning, analysis, and reporting workflows.
- Developed skills in professional Data Visualization and storytelling techniques for presenting business insights.
Experience
Professional experience with analytical thinking.
My experience in frontend development and customer support helped me build strong problem-solving skills, structured thinking, and the ability to work with real-world business and user-focused requirements.
Freelance Collaboration
Frontend Web Developer
Aug 2021 – Apr 2023 · Remote
- Collaborated with a backend-focused developer to build responsive frontend interfaces using HTML, CSS, and JavaScript
- Developed page layouts, UI components, and styling for web development projects
- Improved responsiveness, user experience, and browser compatibility across different screen sizes
Teleperformance
Customer Support Associate — Amazon Email Process
Sep 2023 – Feb 2025 · Kolkata, India
- Handled large volumes of customer data and queries with accuracy
- Identified recurring patterns in customer issues
- Improved response efficiency through structured problem-solving
- Maintained clean and consistent records for reporting
Education
Academic Background
Brainware Group of Institution — SDET
B.Tech in Electronics & Communication Engineering (ECE)
2017 – 2021 · Kolkata, India
Contact
Available for opportunities
Let’s work together.
I am currently looking for Data Analyst, BI Analyst, MIS Analyst, Reporting Analyst, internship, and trainee opportunities.
Location
Kolkata, India
Preferred Work
On-site, Hybrid or Remote