Efthymios K.

Efthymios K.

Data Analytics and Data Science · Reviewer, Crebilo

Based in Thessaloniki, Greece

Efthymios reviews data analytics and data science courses for how well they prepare learners for real analytical work — not just guided exercises, but independent problem-solving with messy, real-world data.

Background

Efthymios has around eight years of freelance experience on Upwork, where he holds Top Rated status, working across data science, statistical analysis, machine learning, business intelligence and financial modelling. He currently works as a Data Scientist at StatBid, focused on e-commerce analytics, machine learning and LLM-related applications, and previously worked as a Data Analyst at Search Atlas on data engineering, geospatial analysis and natural language processing. His academic background spans a degree in Finance, a Master’s in Business Informatics and an MSc in Complex Systems and Networks, alongside ongoing doctoral-level research in network science and predictive analytics. He has also published R tutorials and exercises as a contributor to R-exercises.

Courses reviewed

• Google Data Analytics Professional Certificate Review
• IBM Data Science Professional Certificate Review
• 7 Composite Case Studies: Changing Careers With a Certificate
• How to Get Into Data Science With No Degree

Disclosure

Efthymios has no affiliate relationship with the course providers reviewed on Crebilo. Reviews are expert opinions based on published course information and the reviewer’s experience in their field. Read our editorial policy.