I am a versatile Business & Data Analyst with a 14-year track record driving commercial strategy across marketing, sales, and supply chain. I translate complex business problems into technical solutions using SQL, Python, and BI tools to deliver actionable insights and measurable results. I thrive on turning raw data into profitable strategies, from optimizing product portfolios and digital ad spend to informing long-term demand planning. With an MSc in Business Analytics, I blend traditional and digital marketing expertise with advanced analytics to forecast demand, optimize portfolios, and improve ROI across channels. I enjoy collaborating with cross-functional teams to deploy data-driven initiatives that grow revenue and efficiency while keeping a customer-centric focus.

Sanjaya Weerasekara

I am a versatile Business & Data Analyst with a 14-year track record driving commercial strategy across marketing, sales, and supply chain. I translate complex business problems into technical solutions using SQL, Python, and BI tools to deliver actionable insights and measurable results. I thrive on turning raw data into profitable strategies, from optimizing product portfolios and digital ad spend to informing long-term demand planning. With an MSc in Business Analytics, I blend traditional and digital marketing expertise with advanced analytics to forecast demand, optimize portfolios, and improve ROI across channels. I enjoy collaborating with cross-functional teams to deploy data-driven initiatives that grow revenue and efficiency while keeping a customer-centric focus.

Available to hire

I am a versatile Business & Data Analyst with a 14-year track record driving commercial strategy across marketing, sales, and supply chain. I translate complex business problems into technical solutions using SQL, Python, and BI tools to deliver actionable insights and measurable results. I thrive on turning raw data into profitable strategies, from optimizing product portfolios and digital ad spend to informing long-term demand planning.

With an MSc in Business Analytics, I blend traditional and digital marketing expertise with advanced analytics to forecast demand, optimize portfolios, and improve ROI across channels. I enjoy collaborating with cross-functional teams to deploy data-driven initiatives that grow revenue and efficiency while keeping a customer-centric focus.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Freelance Data Analyst & Marketing Consultant at Independent
May 1, 2025 - Present
Developing a portfolio of data analytics projects focused on solving commercial challenges, from data sourcing and cleaning to predictive modeling and dashboarding. Portfolio projects include Retail Profitability Analysis, E-commerce Customer Segmentation, Digital Marketing Campaign Performance Dashboards, Retail Market Basket Analysis, and CLV & Churn analyses.
Assistant Marketing Manager at Robbialac Paints | Lankem Ceylon PLC
May 1, 2025 - September 18, 2025
Integrated D2C ecosystem and performance analytics; retailer retention via RFM-based segmentation; cross-sell & value chain analytics; marketing spend optimization and ROI improvements.
Brand Manager / Product Manager at Lankem Ceylon PLC
June 1, 2023 - September 18, 2025
Led data infrastructure initiatives (SFA & Applicator Management System); crisis-driven pricing strategy during 2022; demand forecasting for 2000+ products across 60+ regions; SKU profitability analysis and portfolio optimization.
Assistant Manager, SOP at CEAT Kelani Holdings
April 1, 2016 - September 18, 2025
Strategic forecasting & capacity planning; inventory optimization and reduction of stock-outs across dealer network.
Assistant Manager, New Product Development & Marketing Research / Management Trainee at CEAT Kelani Holdings
May 1, 2015 - September 18, 2025
Forecasting for tire size demand; consumer persona research; NPD process optimization reducing development time; market & customer insights translating into product and marketing strategies.
Marketing Intern for Newdale Brand at Fonterra Brands Lanka, SL
October 1, 2011 - September 18, 2025
Exposure to marketing research and product development activities for the Newdale brand.
Assistant Marketing Manager at Robbialac Paints | Lankem Ceylon PLC
May 1, 2025 - September 18, 2025
Integrated D2C ecosystem & performance analytics by unifying Zoho CRM, WooCommerce, delivery partner APIs, and internal inventories; analyzed end-to-end customer journey data to launch targeted campaigns, resulting in a four-fold increase in engagement and doubling conversion rate. Developed retailer segmentation using RFM, reducing churn and increasing active retailers by 85%. Conducted Market Basket Analysis to inform cross-selling; increased average sub-categories sold per retailer from ~10 to 25; designed incentive programs for shop assistants and applicators to drive a data-driven push strategy. Optimized digital marketing spend and ROAS.
Brand Manager / Product Manager at Lankem Ceylon PLC
June 1, 2023 - September 18, 2025
Led data infrastructure and CRM initiatives, launching Sales Force Automation (SFA) in 2021 and an Applicator Management System in 2023 to unify data and support analytics across 10,000+ retailers. Spearheaded crisis-response with a 'first-mover' economy paint range during the 2022 price surge, preserving market share. Directed demand forecasting for 2000+ SKUs across 60+ regions, informing inventory, production and finance targets. Conducted SKU profitability analysis to guide portfolio decisions using a BCG framework.
Assistant Manager, Sales & Operations Planning (SOP) at CEAT Kelani Holdings
April 1, 2016 - September 18, 2025
Led LTDP/LTSP forecasting and capacity planning; optimized inventory by analyzing slow-moving stock and dealer network availability to minimize stockouts. Coordinated cross-functional planning to align supply with market demand.
Assistant Manager, New Product Development & Marketing Research / Management Trainee at CEAT Kelani Holdings
May 1, 2015 - September 18, 2025
Developed predictive analytics for NPD by forecasting replacement tire size demand from vehicle import statistics; performed consumer persona research to guide feature prioritization; redesigned NPD process to reduce development time from 2.5 years to 9 months; managed large-scale quantitative research (Satisfaction, Brand Equity) across 1500 respondents, translating findings into actionable strategies.
Marketing Intern for Newdale Brand at Fonterra Brands Lanka, SL
October 1, 2011 - September 18, 2025
Marketing intern supporting brand development for Newdale; gained exposure to consumer insights and market research.
Freelance Data Analyst & Marketing Consultant at Independent
May 1, 2025 - Present
Developing a portfolio of data analytics projects focused on solving commercial challenges, from data sourcing and cleaning to predictive modeling and dashboarding.
Assistant Marketing Manager at Robbialac Paints | Lankem Ceylon PLC
May 1, 2025 - September 18, 2025
Integrated D2C ecosystem and performance analytics by connecting Zoho CRM, WooCommerce, delivery partner APIs and internal inventory systems. Analyzed end-to-end customer journey data to launch targeted campaigns, increasing engagement and doubling conversion rate. Built retailer segmentation (RFM) to identify at-risk accounts for targeted reactivation campaigns, expanding the active retailer base by 85%.
Brand Manager / Product Manager at Lankem Ceylon PLC
June 1, 2023 - September 18, 2025
Launched an economy paint range during the 2022 financial crisis, led demand forecasting for 2000+ products across 60+ regions, and conducted SKU-level profitability analysis to guide portfolio and marketing investments.
Assistant Manager, Sales & Operations Planning (SOP) at CEAT Kelani Holdings
April 1, 2016 - September 18, 2025
Led central planning for LTDP/LTSP, analyzed historical data to align production capacity with future demand, and optimized inventory to reduce stock-outs across the dealer network.
Assistant Manager, New Product Development & Marketing Research / Management Trainee at CEAT Kelani Holdings
May 1, 2015 - September 18, 2025
Developed a forecasting model for replacement tire sizes, defined consumer personas for new products, re-engineered the NPD process to reduce development time, and managed large-scale market research projects.
Marketing Intern for Newdale Brand at Fonterra Brands Lanka, SL
October 1, 2011 - September 18, 2025
Marketing internship focusing on product marketing and market research.
Freelance Data Analyst & Marketing Consultant at Independent
May 1, 2025 - Present
Developing a portfolio of data analytics projects focused on solving commercial challenges, from data sourcing and cleaning to predictive modeling and dashboarding.
Assistant Marketing Manager at Robbialac Paints, Lankem Ceylon PLC
May 1, 2025 - September 18, 2025
Integrated D2C ecosystem & performance analytics; launched targeted campaigns, resulting in a 4-fold increase in customer engagement and a doubling of the conversion rate.
Brand Manager / Marketing Manager at Lankem Ceylon PLC
June 1, 2023 - September 18, 2025
Led data infrastructure & CRM initiatives (SFA 2021, Applicator Management System 2023); launched first-mover economy paint range during the 2022 price surge; led demand forecasting and portfolio profitability analysis.
Assistant Manager, Sales & Operations Planning (SOP) at CEAT Kelani Holdings
April 1, 2016 - September 18, 2025
Led strategic forecasting and capacity planning; optimized inventory and reduced stock-outs across dealer network.
Assistant Manager, New Product Development & Marketing Research/ Management Trainee at CEAT Kelani Holdings
May 1, 2015 - September 18, 2025
Developed predictive analytics for tire size demand; defined consumer personas and features for NPD; re-engineered NPD processes to shorten development time from 2.5 years to 9 months.
Marketing Intern for Newdale Brand at Fonterra Brands Lanka, SL
October 1, 2011 - September 18, 2025
Supported marketing initiatives during internship.

Education

MSc in Business Analytics at Robert Gordon University, UK
January 11, 2030 - January 1, 2025
Postgraduate CIM at Chartered Institute of Marketing (CIM), UK
January 11, 2030 - January 1, 2020
MBA in Business Management at University of Wales Trinity Saint David, UK
January 11, 2030 - January 1, 2019
Bachelor’s in Marketing & Management at Edith Cowan University, AUS
January 11, 2030 - January 1, 2012
MSc in Business Analytics at Robert Gordon University, UK
January 1, 2025 - January 1, 2025
Postgraduate at Chartered Institute of Marketing (CIM), UK
January 1, 2020 - January 1, 2020
MBA in Business Management at University of Wales Trinity Saint David, UK
January 1, 2019 - January 1, 2019
Bachelor’s in Marketing & Management at Edith Cowan University, AUS
January 1, 2012 - January 1, 2012
MSc in Business Analytics at Robert Gordon University, UK
January 11, 2030 - January 1, 2025
Postgraduate Certification (CIM) at Chartered Institute of Marketing (CIM), UK
January 11, 2030 - January 1, 2020
MBA in Business Management at University of Wales Trinity Saint David, UK
January 11, 2030 - January 1, 2019
Bachelor’s in Marketing & Management at Edith Cowan University, AUS
January 11, 2030 - January 1, 2012
MSc in Business Analytics at Robert Gordon University, UK
January 1, 2024 - January 1, 2025
Postgraduate CIM at Chartered Institute of Marketing (CIM), UK
January 1, 2019 - January 1, 2020
MBA in Business Management at University of Wales Trinity Saint David, UK
January 1, 2018 - January 1, 2019
Bachelor’s in Marketing & Management at Edith Cowan University, AUS
January 1, 2009 - January 1, 2012

Qualifications

MSc in Business Analytics
January 1, 2025 - January 1, 2025
Postgraduate CIM UK
January 1, 2020 - January 1, 2020
MBA in Business Management
January 1, 2019 - January 1, 2019
Bachelor’s in Marketing & Management
January 1, 2012 - January 1, 2012
MSc in Business Analytics
January 11, 2030 - January 1, 2025
Postgraduate Certification (CIM)
January 11, 2030 - January 1, 2020
MBA in Business Management
January 11, 2030 - January 1, 2019
Bachelor’s in Marketing & Management
January 11, 2030 - January 1, 2012
MSc in Business Analytics
January 1, 2024 - January 1, 2025
Chartered Institute of Marketing (CIM) - Postgraduate
January 1, 2019 - January 1, 2020
MBA in Business Management
January 1, 2018 - January 1, 2019

Industry Experience

Retail, Manufacturing, Professional Services, Media & Entertainment, Software & Internet, Consumer Goods, Education