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Jim Kotsiras

Jim Kotsiras

Data Scientist

MSc Data Science


My Portfolio Highlights

My New Project

Introduction to DataCamp Projects

My New Track

Tableau Fundamentals

My New Course

Introduction to Python

Data guru, harnessing the power of information for actionable insights.

My Work

Take a look at my latest work.


Introduction to Python


Data Manipulation with pandas


Competition - XP Competition 2022

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

My Work Experience

Where I've interned and worked during my career.

OPAP | Nov 2021 - Present

Data Analyst


Dixons South East Europe | Jun 2020 - Oct 2021

Data Analyst

• Developed Power BI reports and visualizations for Operation department • Created views & tables through Databricks
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NCSR "DEMOKRITOS" | May 2019 - Oct 2020

Master Thesis : Sentiment Analysis for Tweets using Deep Learning

• Working on Deep Learning algorithms via Keras for Greek language to detect sentiment in Tweets • Create and compare different embeddings methods like Word2Vec & FastText Supervisor: George Petasis

PERFORMANCE Technologies S.A. | May 2018 - Jun 2020

Analytics Consultant

• Developed Tableau visualizations and dashboards using Tableau Desktop. • Evaluated workbooks through performance recording for maximum efficiency and performance. • Tableau server administrator • Text mining using Python (NLTK library)

Doctoranytime.gr | Oct 2015 - Dec 2016

Business Analyst

• Data operations • Google Analytics • e – health consultant (gamification project) • email campaign segmentation

Intelen, Inc | Mar 2015 - Jul 2015

Energy Data Analyst (Internship)

Data analysis and short term load forecasting using: • Machine Learning ( Multiple Linear Regression, Support Vector Regression, ARIMA models) • Python (Numpy, Pandas, Scipy, Matplotlib)

IPEL S.A. | Jan 2014 - Jul 2014

Electrical Engineering Technician (Internship)

• Substation maintenance - preventive and repair • E/M Installations • Generator maintenance • Management and analysis of data

My Education

Take a look at my formal education

Master of Science - MS, Data ScienceNational Center for Scientific Research "Demokritos" | 2020
Machine Learning A-Z: Hands - on Python & R in Data ScienceUdemy Academy | 2017
Specialization Program, Big Data & Business AnalyticsAthens University of Economics and Business | 2015
Bachelor’s Degree, Electrical EngineeringPiraeus University of Applied Sciences | 2014

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