Giannis K

Business Intelligence & CRM Analyst

The Mart • Fulltime

Mar 2026 - Present • 6 mos

-Analyze sales, customer, CRM and commercial data to support marketing and business decision-making. -Led customer data standardization initiatives, improving segmentation accuracy by developing a taxonomy categorization framework. -Proposed and contributed to the design of a multi-level customer classification system, including the introduction of additional data attributes to enhance analytical depth. -Built Tableau dashboards and reports to support customer analysis, campaign execution, and data extraction workflows. -Conducted data scraping projects (Phantombuster, Apify, Python) to identify and enrich new customer datasets, particularly for regional expansion (e.g., island markets). -Developed Python-based automation scripts and internal tools for customer data cleaning, preprocessing, matching, deduplication, and outreach workflow optimization. -Collaborated cross-functionally with IT, Marketing, Ecommerce, and Commercial teams to implement CRM process improvements, data structure enhancements, and reporting solutions. -Utilized Tableau, SAP ERP/BW, Excel Power Query, Python, SQL-oriented logic and advanced data transformation techniques to improve reporting efficiency, automation, and business decision-making. -Supported commercial controlling operations through pricing analysis, competitor benchmarking, supplier price list analysis, and SAP BW / Excel-based reporting. -Created internal documentation, glossary and process playbooks to improve onboarding and operational consistency.