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SAHAJAHANUR LASKAR

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Hello, I am

SAHAJAHANUR LASKAR.

1

Excel
Project

3

PowerBI
Projects

2

SQL
Projects

2

Python
Projects

About Me

There’s a pattern to the problems I enjoy solving: operations at scale, customer interactions, and limited visibility into what needs fixing.

That’s where I come in.

I use data to understand service performance and uncover recurring issues. I started in customer support at HDFC ERGO, then moved into MIS, turning routine reporting into trend analysis, dashboards, and management insights.

πŸ”Ά Reduced email response errors by 30% (Q2–Q4) through root-cause analysis; earned the Q3 2023 Best Performer award in Customer Experience.

πŸ”Ά Automated MIS reporting, saving 10+ hours weekly, and analysed 45K+ customer interactions.

Today, I use Power BI, SQL, Python, and Excel to turn raw data into interactive dashboards.

🎯 I’m pursuing Data Analyst roles across industries, combining 2+ years of health insurance operations experience with projects in credit risk, e-commerce, food delivery, supply chain, and hospitality.

My projects show how I approach these problems.

Key Skills

POWER BI DESKTOP

POWER BI SERVICE

SQL

ADVANCED EXCEL

PYTHON

DATA CLEANING

DATA MODELING

DATA VISUALIZATION

DATA STORYTELLING

ROOT-CAUSE & TREND ANALYSIS

DAX

My Projects

Business Insights in Excel: Sales & Finance Reporting
Business Insights in Excel: Sales & Finance Reporting

Domain/Function: Consumer Goods Sales & Finance Reporting

Business Insights 360: Retail & E-commerce Analytics
Business Insights 360: Retail & E-commerce Analytics

Domain/Function: Consumer Goods Strategy

AtliQ Grands – Hotel Revenue Analytics (Power BI)
AtliQ Grands – Hotel Revenue Analytics (Power BI)

Domain/Function: Hospitality

Sales & Product Performance Analysis for Consumer Goods Manufacturer
Sales & Product Performance Analysis for Consumer Goods Manufacturer

Domain/Function: Consumer Goods Sales & Business Analytics

Demand and Revenue Analysis for Hospitality Chain
Demand and Revenue Analysis for Hospitality Chain

Domain/Function: Hospitality Demand & Revenue

Hardware Sales Insights & Profitability Analysis | SQL & Tableau
Hardware Sales Insights & Profitability Analysis | SQL & Tableau

Domain/Function: Sales Analytics / Business Intelligence (BI)

Health Insurance Premium Prediction Using Machine Learning
Health Insurance Premium Prediction Using Machine Learning

Domain/Function: Health Insurance Analytics

Shield Insurance Analysis
Shield Insurance Analysis

Domain/Function: Insurance

Coffee Shop Expansion Analysis using SQL
Coffee Shop Expansion Analysis using SQL

Domain/Function: Retail | Sales Analytics & Market Expansion

Vendor Performance & Inventory Analytics
Vendor Performance & Inventory Analytics

Domain/Function: Retail Analytics – Procurement & Inventory Management

My Experience

Data Analyst Intern | Jul 2026 – Aug 2026

AtliQ Technologies | Remote

  • Built the Shield Insurance analytics dashboard, analysing β‚Ή989M in revenue and 26,841 customers; identified that customers aged 55+ contributed 27.8% of revenue while representing 12.8% of customers.
  • Published the dashboard to Power BI Service and developed supporting GitHub documentation, stakeholder presentations, executive recommendations, and video walkthroughs.
  • Delivered end-to-end Power BI analysis for Wavecon Telecom, evaluating 5G launch performance: revenue declined 0.50%, ARPU increased 11.05%, and active users declined 8.28%.
  • Automated a client’s manual weekly reporting process using Power Query and Power BI.
  • Transformed a 57K+ row transactional dataset into a normalized fact-and-dimension model, validating referential integrity.
  • Performed benchmark-versus-actual variance analysis and debugged SQL queries using JOINs, CTEs, and window functions.
  • Cleaned and standardized HR attendance and sales/order datasets using Python and Pandas, performing ad-hoc analysis to support business reporting.



MIS Executive | Sep 2022 – Jan 2025

HDFC ERGO General Insurance | Noida

  • Reduced email response errors by 30% (Q2–Q4) through trend analysis and root-cause investigation, helping improve NPS and earning the Best Performer Award (Q3 2023) in Customer Experience.
  • Analysed recurring service errors and collaborated with the training team to address root causes, reducing repeat issues by 40%.
  • Identified high-frequency email complaints and improved email templates, contributing to a 6% reduction in follow-up volume.
  • Automated recurring MIS reporting, saving an estimated 10+ hours per week in manual reporting effort.
  • Built and automated daily dashboards for senior management, highlighting key issues, training needs, and drivers of negative feedback.
  • Consolidated 45K+ customer interactions across 70 associates using Excel, Power Query, and PivotTables to identify service trends and performance gaps.

Awards & Certificate

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Excel: Mother of Business Intelligence

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Get Job Ready: Power BI Data Analytics for All Levels 4.0

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SQL Beginner to Advanced For Data Professionals

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Python: Beginner to Advanced For Data Professionals

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Tableau Mini

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Microsoft Fabric Mini: For Data Analysts

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AI Automation for Data Professionals

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Master Machine Learning for Data Science & AI: Beginner to Advanced

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Personal Branding (LinkedIn & Beyond) for All Professionals

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Data Analytics Bootcamp 6.0: Job Placement Support + Your Own AI Analyst Agent

Python & SQL for Data Analyst By Scaler Academy

Python & SQL for Data Analyst By Scaler Academy

Snowflake Master

Snowflake Master

Complete Data Analyst Bootcamp From Basic to Advanced By Krish Naik (Udemy))

Complete Data Analyst Bootcamp From Basic to Advanced By Krish Naik (Udemy))

Data Engineering Basics for Data Analysts

Data Engineering Basics for Data Analysts

Databricks Fundamentals Accreditation Certificate

Databricks Fundamentals Accreditation Certificate

HackerRank SQL (Intermediate)

HackerRank SQL (Intermediate)

HackerRank SQL (Advanced)

HackerRank SQL (Advanced)

Generative AI Fundamental By Databrics

Generative AI Fundamental By Databrics

AI/BI For Data Analyst By Databrics

AI/BI For Data Analyst By Databrics

HackerRank Python(Basic)

HackerRank Python(Basic)

Let's Connect

Feel free to get in touch with me. I am always open to discussing new projects, creative ideas or opportunities to be part of your visions.