Profile Details

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Hire Giannis T.

Greece

USD 40 /hr

Freelance Data Scientist and Researcher

Profile Summary

As an experienced data scientist and researcher, I am passionate about statistics, data visualization and machine learning. I am also particularly interested in utilizing data science to mitigate climate change, and help accomplish the UN Sustainable Development Goals. This personal aspiration has been achieved by participating in research projects about climate change mitigation, such as DIAMOND and IAM-COMPACT. My significant experience as a freelancer, has also given me the opportunity to collaborate with companies from all over the world, and acquire valuable experience, as well as a diverse skill set.

Subject Matter Expertise

• ☆ Data Analysis
• ☆ Predictive Modeling & Analytics
• ☆ Data Processing
• ☆ Data Exploration
• ☆ Data Visualization
• ☆ Machine Learning
• ☆ Natural Language Processing
• ☆ Deep Learning
• ☆ Statistics
• ☆ Applied Statistics
• ☆ Regression Analysis
• ☆ Python
• ☆ Excel
• ☆ LaTex
• ☆ R
• ☆ Markup Languages
• ☆ Hypothesis
• ☆ Research Methodology
• ☆ Technical & Scientific Writing
• ☆ Manuscript & Journal Article Writing
• ☆ Textbook Content Writing
• ☆ Science Communication
• ☆ Literature Review
• ☆ Blog Posts

Services

• Writing
• Research
• Data & AI

Writing Technical Writing

Research Gray Literature Search, Scientific and Technical Research

Data & AI Predictive Modeling, Statistical Analysis, Data Visualization, Text Mining & Analytics, Data Cleaning, Data Insights

Work Experience

Energy Systems Modeller - Researcher

National Technical University of Athens

- Present

Senior Researcher - Consultant

Ricardo (United Kingdom)

- Present

Education

Postagraduate Diploma in Computer Science

University of Hertfordshire

January 2014 - January 2016

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

Giannis Tolios, Bob van der Zwaan, Amir Fattahi, Francesco Dalla Longa, Mark Dekker, Detlef van Vuuren, Robert Pietzcker, Renato Rodrigues, Felix Schreyer, Daniel Huppmann, et al. (2025). Electricity- and hydrogen-driven energy system sector-coupling in net-zero CO2 emission pathways . Nature Communications.

BOOK

Tolios, G(2022). Simplifying Machine Learning with PyCaret . Leanpub: Victoria, BC, Canada.