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Efthymios Manelis

@efthymiosmanelis

Junior data & risk analyst building forecasting and anomaly-detection workflows in Python.

Greece
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What I'm looking for

I’m looking for a junior, hands-on data and risk analytics role where I can learn quickly, deepen SQL/Python/BI skills, and contribute from day one. I’m detail-oriented, process-driven, and available within CET hours for fully remote work.

I’m a Junior Data & Risk Analyst with a BSc in Accounting & Finance and an MSc in Data Science & Machine Learning (2025). I combine finance-first thinking with hands-on machine learning to turn messy data into clear, decision-ready signals.

In my current role as a Franchise Owner & Operator in Athens, I run end-to-end commercial operations (P&L monitoring, pricing, inventory, vendor relationships, and compliance). I also built a Python-based revenue forecasting and anomaly-detection workflow using Prophet + LightGBM and SHAP feature attribution, producing 30/60/90-day rolling forecasts at category level to flag unusual sales patterns and support working-capital decisions.

Alongside that, I maintain an Excel lost-sales and variance-tracking framework to surface stockouts, margin drift, and unexpected demand shifts, then reconcile irregularities daily with structured documentation. I’m detail-oriented and process-driven—focused on threshold-based alerting, rolling-window analysis, and concise outputs that help teams act quickly.

My technical foundation is backed by MSc coursework (Statistical Learning, Time-Series Analysis, Machine Learning, SQL & Databases, Big Data) and a capstone that mirrors my applied approach to end-to-end forecasting + anomaly detection. I’m especially motivated to deepen SQL, Python, and BI tooling on the job, and I’m fully remote-ready within CET hours.

Experience

Work history, roles, and key accomplishments

SR
Current

Franchise Owner & Operator

Specialty Retail

Jan 2024 - Present (2 years 5 months)

Ran end-to-end commercial operations including P&L monitoring, pricing, inventory, and regulatory/tax compliance. Built a Python-based revenue forecasting and anomaly-detection workflow (Prophet + LightGBM ensemble, SHAP) to generate 30/60/90-day rolling forecasts and flag unusual sales patterns for working-capital decisions.

Education

Degrees, certifications, and relevant coursework

Hellenic Open University logoHU

Hellenic Open University

Master of Science, Data Science & Machine Learning

Completed an MSc in Data Science & Machine Learning with coursework in statistical learning, time-series analysis, and machine learning. Completed a capstone building an end-to-end forecasting and anomaly-detection pipeline using SQL and Python.

Panteion University logoPU

Panteion University

Seminar, Blockchain Economy

Completed a 40-hour Blockchain Economy Seminar focused on the economic and structural fundamentals of blockchain technology and crypto-asset markets.

University of West Attica logoUA

University of West Attica

Bachelor of Science, Accounting & Finance

Completed a BSc in Accounting & Finance covering financial reporting, corporate finance, statistics, and quantitative methods.

Tech stack

Software and tools used professionally

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