À propos de Grigorios Konstantinos
Bonjour, je suis Konstantinos — Data Analyst & Consultant BI 👋
Grec
Bilingue ou natif
Français
Capacité professionnelle complète
Anglais
Capacité professionnelle complète
Espagnol
Bilingue ou natif
Portugais
Capacité professionnelle limitée
Expériences
- FileButlerCo-Founder & Data Analystnovembre 2025 - Aujourd'hui (9 mois)• - Own end-to-end analytics for the product: built and maintain dashboards in Metabase tracking user activity using SQL against our production database.• - Rebuilt broken GA4 tracking and event structure, then set up export pipeline from Google Analytics to BigQuery for deeper, SQL-based analysis beyond GA's native reporting limits.• - Write and optimize SQL queries to answer product and growth questions for the founding team, replacing ad-hoc spreadsheet checks with repeatable dashboards.
- KONSTANTINOS GKARAVELOSData Analytics Engineeroctobre 2025 - février 2026 (4 mois)Self-taught modern data pipeline work: built NutriChain Food Lakehouse (Python ingestion, dbt, Airflow, Databricks) as a portfolio project demonstrating pipeline skills. I designed and built a production-style food data lakehouse that solves a real problem. Open Food Facts is a public API with 3M+ product records but zero analyst-ready tables. Nutrichain Open Food Lakehouse is a portfolio project demonstrating my skills in analytics engineering. It turns that raw API into a trusted, queryable lakehouse on Databricks
- Becton, Dickinson and CompanyData AnalystSECTEUR MÉDICALaoût 2025 - octobre 2025 (2 mois)Paris, FranceContracted to execute a critical master data integration project following a company acquisition, specifically handling the Greek and French markets:- Tasked with identifying and resolving duplicate customer records between an 8,000-record acquired database and a 514,000-record enterprise database- Engineered custom Excel macros and utilized advanced data functions to automate the matching of customer names, addresses, and IDs across both datasets- Successfully mapped and deduplicated the required records, ensuring a clean migration into the parent company's master database
Avis
Recommandations
Soyez le premier à recommander Grigorios Konstantinos
Contribuez à la réussite de ce freelance en partageant votre expérience de collaboration avec lui.
Ces profils de freelance correspondent également à vos critères
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Formations
- Diploma in IT Applications & Computer SciencePublic Vocational Training Institute of Glyfada2021Grade: 9,5/10 I was 1st student in the class and my main areas of study were: -Website & Database building -Data Warehousing & ETL process -Data Visualisation (Power BI, Tableau) -Computers' architecture -Operating systems -Coding in C language, Python (Pandas, NumPy, Matplotlib)
- Honors Bachelor in Business, Economics, Marketing & AnalyticsAthens University of Economics and Business2021Grade: 8,55/10 Activities and societies: Member of ESN AUEB, Debater of Rhetorical association AUEB, Member of Film association AUEB -Top 5% of graduates -Specialization in Analytics -Admitted 1st to the department with a 91% score in Greek National Exams -The most interesting and influential courses during my studies were: Negotiations, Product Design & Development, UX/UI Design, Digital Entrepreneurship, Web analytics, Creative Design & Advertising Media, Corporate Ethics and Responsibility
Certifications
- Business Intelligence & Machine LearningCode.Hub2025
- Introduction to Database Systems & SQLTech Talent School2020