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Hi, I’m Harshal Mahakalkar, a data-driven professional currently pursuing an M.Sc. in Data and Knowledge Engineering at Otto von Guericke University Magdeburg, Germany. I previously earned a B.E. in Artificial Intelligence and Data Science from P.E.S. Modern College of Engineering in Pune. I specialize in data mining, machine learning, big data analytics, and knowledge discovery, and I enjoy turning complex datasets into actionable insights. In industry, I’ve built hands-on experience across ML and marketing analytics. As a Machine Learning Intern at YBI Foundation, I applied data analytics for churn prediction, boosting model accuracy by 12%. At Dentsu in Pune, I managed over €420K in annual ad spend, led analytics for Reliance Brands’ labels (Brooks Brothers, GAS Jeans, Tiffany & Co., Satya Paul), and delivered significant ROAS improvements, CAC reductions, and revenue growth across campaigns. I’m proficient with Google Ads, GTM, Looker Studio, and Power BI, and I love combining data science with strategic marketing to drive measurable results.…Hi, I’m Harshal Mahakalkar, a data-driven professional currently pursuing an M.Sc. in Data and Knowledge Engineering at Otto von Guericke University Magdeburg, Germany. I previously earned a B.E. in Artificial Intelligence and Data Science from P.E.S. Modern College of Engineering in Pune. I specialize in data mining, machine learning, big data analytics, and knowledge discovery, and I enjoy turning complex datasets into actionable insights. In industry, I’ve built hands-on experience across ML and marketing analytics. As a Machine Learning Intern at YBI Foundation, I applied data analytics for churn prediction, boosting model accuracy by 12%. At Dentsu in Pune, I managed over €420K in annual ad spend, led analytics for Reliance Brands’ labels (Brooks Brothers, GAS Jeans, Tiffany & Co., Satya Paul), and delivered significant ROAS improvements, CAC reductions, and revenue growth across campaigns. I’m proficient with Google Ads, GTM, Looker Studio, and Power BI, and I love combining data science with strategic marketing to drive measurable results.

HARSHAL MAHAKALKAR

Data Scientist, Data Analyst, Marketing Analyst, +7

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Hi, I’m Harshal Mahakalkar, a data-driven professional currently pursuing an M.Sc. in Data and Knowledge Engineering at Otto von Guericke University Magdeburg, Germany. I previously earned a B.E. in Artificial Intelligence and Data Science from P.E.S. Modern College of Engineering in Pune. I specialize in data mining, machine learning, big data analytics, and knowledge discovery, and I enjoy turning complex datasets into actionable insights. In industry, I’ve built hands-on experience across ML and marketing analytics. As a Machine Learning Intern at YBI Foundation, I applied data analytics for churn prediction, boosting model accuracy by 12%. At Dentsu in Pune, I managed over €420K in annual ad spend, led analytics for Reliance Brands’ labels (Brooks Brothers, GAS Jeans, Tiffany & Co., Satya Paul), and delivered significant ROAS improvements, CAC reductions, and revenue growth across campaigns. I’m proficient with Google Ads, GTM, Looker Studio, and Power BI, and I love combining data science with strategic marketing to drive measurable results.…Hi, I’m Harshal Mahakalkar, a data-driven professional currently pursuing an M.Sc. in Data and Knowledge Engineering at Otto von Guericke University Magdeburg, Germany. I previously earned a B.E. in Artificial Intelligence and Data Science from P.E.S. Modern College of Engineering in Pune. I specialize in data mining, machine learning, big data analytics, and knowledge discovery, and I enjoy turning complex datasets into actionable insights. In industry, I’ve built hands-on experience across ML and marketing analytics. As a Machine Learning Intern at YBI Foundation, I applied data analytics for churn prediction, boosting model accuracy by 12%. At Dentsu in Pune, I managed over €420K in annual ad spend, led analytics for Reliance Brands’ labels (Brooks Brothers, GAS Jeans, Tiffany & Co., Satya Paul), and delivered significant ROAS improvements, CAC reductions, and revenue growth across campaigns. I’m proficient with Google Ads, GTM, Looker Studio, and Power BI, and I love combining data science with strategic marketing to drive measurable results.

Available to hire

Hi, I’m Harshal Mahakalkar, a data-driven professional currently pursuing an M.Sc. in Data and Knowledge Engineering at Otto von Guericke University Magdeburg, Germany. I previously earned a B.E. in Artificial Intelligence and Data Science from P.E.S. Modern College of Engineering in Pune. I specialize in data mining, machine learning, big data analytics, and knowledge discovery, and I enjoy turning complex datasets into actionable insights.

In industry, I’ve built hands-on experience across ML and marketing analytics. As a Machine Learning Intern at YBI Foundation, I applied data analytics for churn prediction, boosting model accuracy by 12%. At Dentsu in Pune, I managed over €420K in annual ad spend, led analytics for Reliance Brands’ labels (Brooks Brothers, GAS Jeans, Tiffany & Co., Satya Paul), and delivered significant ROAS improvements, CAC reductions, and revenue growth across campaigns. I’m proficient with Google Ads, GTM, Looker Studio, and Power BI, and I love combining data science with strategic marketing to drive measurable results.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Machine Learning Intern at YBI Foundation

April 1, 2023 - April 1, 2023

Applied data analytics and machine learning techniques for customer churn prediction, enhancing model accuracy by 12% and demonstrating strong analytical and data-driven problem-solving skills.

Business Analyst at Dentsu

June 1, 2025 - June 1, 2025

Handled strategic analytics for four RBL brands — Brooks Brothers, GAS Jeans, Tiffany & Co., and Satya Paul, delivering data-backed recommendations that drove up to 25% revenue growth through campaign optimization strategies. Developed and automated monthly performance dashboards using Power BI and Looker Studio, reducing report preparation time by 15% and improving data accessibility across departments. Collaborated with marketing teams to refine audience targeting and ad creatives, contributing to measurable improvements in campaign CTR and ROI.

Machine Learning Intern at YBI Foundation, Pune, India

April 30, 2023 - April 30, 2023

Applied data analytics and machine learning techniques for customer churn prediction, enhancing model accuracy by 12%, and demonstrated strong analytical and data-driven problem-solving skills.

Business Analyst at Dentsu, Pune, India

June 30, 2025 - June 30, 2025

Handled strategic analytics for four RBL brands — Brooks Brothers, GAS Jeans, Tiffany & Co., and Satya Paul — delivering data-backed recommendations that drove up to 25% revenue growth through campaign optimization strategies. Developed and automated monthly performance dashboards using Power BI and Looker Studio, reducing report preparation time by 15% and improving data accessibility across departments. Collaborated with marketing teams to refine audience targeting and ad creatives, contributing to measurable improvements in campaign CTR and ROI. Campaign management included optimizing Google Ads and Meta Ads, conducting A/B tests, and tracking KPIs with Google Analytics 4 and Excel dashboards.

Business Analyst (promoted from Associate) at Dentsu

May 1, 2024 - June 1, 2025

Managed €420K+ annual ad spend. Promoted from Associate in November 2024. Spearheaded strategic analytics for four flagship Reliance Brands Limited labels: Brooks Brothers, GAS Jeans, Tiffany & Co., Satya Paul. For Brooks Brothers, ran targeted campaigns focusing on scalability and ROAS, achieving a 3X revenue increase within 8 months. For GAS Jeans, improved brand performance, increasing revenue by 23% in 3 months. For Tiffany & Co., optimized customer acquisition strategies, reducing CAC by 28% and boosting conversions. For Satya Paul, executed top/mid/bottom-funnel campaigns, improving conversion rates and contributing to a 20% increase in brand revenue over the campaign period.