Stavros Ketseas

Data Scientist

Data Analyst

Data Engineer

Web Developer

Software Engineer

BI Developer

Digital Marketer

Cloud Engineer

Stavros Ketseas

Data Scientist

Data Analyst

Data Engineer

Web Developer

Software Engineer

BI Developer

Digital Marketer

Cloud Engineer

Download CV Contact Me

Hello, I’m Stavros Ketseas Data Scientist Data Analyst Data Engineer Web Developer Software Engineer BI Developer Digital Marketer Cloud Engineer

Web Developer and Data Scientist based in Athens, Greece.

Have worked in a variety of positions, including Data Analyst, Data Engineer, Software Engineer, BI Developer, Digital Marketer and Cloud Engineer.

Turning complex data into actionable strategies and ideas into web solutions through a unique blend of engineering, analytics, and business experience.

10+

Completed
Projects

3+

Years
of Experience

Technical Skills

Technologies

Python

95%

SQL

95%

90%

Microsoft Power BI

95%

Microsoft Azure

80%

Microsoft Fabric

75%

React

70%

Html 5, CSS, Javascript, Typescript, .NET, PHP, C#

75%

additional Technical Skills

Machine Learning
Deep Learning
PostgreSQL
Databricks
DBMS
DAX
Java

DevOps
C++
Latex
Matlab
MS Excel
SAS
SPSS

Bash
UML
Unix
XML
Agile
Goggle Ads & Analytics
Social Media Management

Tool Skills

Tool Stack

Wordpress

95%
Power BI Desktop

95%
Microsoft Fabric

75%
Microsoft Azure

80%
Anaconda Spyder

95%
Jupyter Notebook

95%
Pycharm

90%
R Studio

90%
Visual Studio

85%
Visual Studio Code

85%
GitLab

75%
JIRA

80%
ChatGPT

95%
Google Colab

95%
MSSQL Server

90%
DBeaver

85%

additional tool Skills

Aera Platform
Azure Devops
Confluence
Moodle
Octave

Oracle BPM Studio
SPSS
Scratch
Wireshark

General Skills

Database

Databricks

90%
Oracle 12c

75%
AWS Redshift

85%
PostgreSQL

95%

Languages

Greek

100%
English

95%
German

55%

What we do

Data Science
Data Analysis
Data Engineering
Web Development
Software Engineering
BI Development
Digital Marketing
Cloud Engineering

SERVICES

What Services I Provide ?

1 Data Scientist

Data Science / Data Analysis

I help businesses transform raw data into actionable insights through data analysis, machine learning, and predictive modeling. With experience across data engineering, business intelligence, and software development, I design end-to-end data solutions — from cleaning and structuring data to building dashboards and advanced models — enabling smarter decisions and measurable growth.

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1 Web Developer

Web Development

I design and build modern, responsive, and user-friendly websites tailored to your needs. From business websites, e-shops and e-learning platforms to custom web applications, I combine clean code with strong UI/UX principles to deliver fast, secure, and scalable solutions that help your brand stand out online.

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1 Tutor

Online Tutoring

I provide personalized online tutoring in computer science, helping students and professionals build strong foundations in programming, data structures, algorithms, databases, and more. Whether you’re a beginner learning Python or preparing for technical interviews, I offer step-by-step guidance with practical examples to make complex concepts easy to understand.

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2 Digital Marketers

Dgital Marketing

I help businesses boost their online presence through data-driven marketing strategies. From creating and managing high-performing Google Ads campaigns to building engaging social media content and ads, I ensure your brand reaches the right audience, drives traffic, and maximizes ROI across multiple channels.

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Pricing

Amazing Pricing For Your Projects

per hour

€25

Order Now

Web Development – Modern, responsive, and user-friendly websites or web applications tailored to your needs.
Computer Science Tutoring – Personalized online tutoring in programming, algorithms, databases, and more.
Digital Marketing – Google Ads campaign management and social media marketing to grow your online presence.

starting from per project

€250

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Data Science – Data analysis, machine learning, predictive modeling, and business intelligence solutions.

Production Projects

Explore Production Projects
Portfolio By Technology

Internal Projects (Innovation & Automation) – Accenture

Data Analytics, Data Engineering

Hellenic National Cadastre – Microsoft Power BI Analytics

Data Analytics, Python, SQL

Dell Technologies – Data Science Analyst

Python, SQL

Novileague – Novibet

Web Development

SupmVideoCourses – ELearning Platform

ELearning Platform, Web Development

Bobhouse.gr Barber Shop – Booking Platform

Web Development

Academic Projects

Explore Academic Projects
Portfolio By Technology

Stocks : The Time Traveler Problem

Data Science

Exploratory Data Analysis : Discovering Correlation between the Distribution of Covid-19 vaccines and national GDPs using R

Data Science

Literacy Review in Ensuring Security and Privacy using Blockchain Technology

Blockchain

Mobile Application for Melanoma Prediction (Skin Cancer)

Data Science

Price Prediction and Sentiment Analysis for Airbnb properties of Athens

Data Science

NBA Results Prediction using Machine Learning & Deep Learning

Data Science, Python

Resume

Work Experience & Education

2024 - Present

Web Developer - Freelancer

Athens, Greece

Developed websites for

• E-shops

• Booking Platforms

• Elearning Platforms

• Portfolios

• Landing Pages

10/2023 - Present

Data Analyst / Data Engineer

Hellenic National Cadastre
via Ubitech LTD, Athens, Greece

• Developed a Microsoft Power BI solution for operational monitoring and improvement, incorporating advanced Data Modeling (DAX, Power Query), ETL processes, and Star Schema design (Data Warehousing & Business Intelligence).

• Designed interactive dashboards with drill-down features, KPI tracking, and customized visualizations to provide actionable insights.

• Translated business requirements into technical specifications through stakeholder collaboration and datadriven analysis.

• Performed query writing and optimization on Microsoft SQL Server (DBMS) for reporting accuracy and performance.

09/2023 - Present

Full Stack Developer

Novibet Greece, Mexico, Brazil, Chile
via Ubitech LTD, Athens, Greece

• Contributed to the development and optimization of the company’s web and mobile applications using React (UI/UX Design).

• Focused on front-end consistency, usability improvements, and responsive UI across platforms.

• Used Git for version control and collaborative codebase management, feature branching, and code reviews along with Azure & Dev Ops.

• Used Jira for Agile project tracking: sprint planning, user story management, release coordination.

01/2023 - 07/2023

Data Science Analyst

Dell Technologies, Austin, Texas
via Accenture, Athens, Greece

• Engineered data solutions on a cloud data platform (Aera Skill Builder) with SQL (DBMS ) for supply chain optimization, using best practices in querying and data design.

• Developed end-to-end full stack pipelines including ETL processes (DBMS & DWH systems), data modeling (Star Schema), Java programming, and GUI/UX design in a low-code, visual programming environment.

• Designed and implemented workload orchestration for automated data flows, enhancing performance and
reducing manual interventions.

11/2022 - 12/2022

Data Science Analyst

Internal Projects
(Innovation & Automation)
via Accenture, Athens, Greece

• Created a newsletter automation tool using Python and web scraping techniques.

• Built a resume screening model using machine learning (Python) for internal talent management (T&O team).

05/2022 - 10/2022

Data Science Analyst

Dell Technologies, Austin, Texas
via Accenture, Athens, Greece

• Led end-to-end process automation use cases — from data ingestion to KPI dashboards — using PostgreSQL, MS SQL (DBMS ), Python scripting, and Shell scripting (Bash).

• Applied DevOps concepts including continuous delivery pipelines, system monitoring, and deployment optimization.

• Used Jira to support Agile task management, sprint planning, and collaborative workflows.

Education

02/2021 – 10/2022

National Technical University of Athens

Athens, Greece

M.Sc. in Data Science & Machine Learning
• Grade: 9.5/10

Certificate

09/2015 – 02/2020

University of Piraeus

Piraeus, Greece

B.Sc. in Department of Digital Systems (Specialization on Software Systems, Data and Database Management) Owner of tutoring license, certified adequacy concerning pedagogics and tutoring
• Grade: 8.24/10

Certificate

10/2017 – 03/2018

Martin-Luther-Universität

Halle Wittenberg, Germany

Erasmus+ programme, In agreement with University of Piraeus
• Field of Studies:
Computer Science
• Courses:
Database Systems, Compilers, XML and Databases, Data Compression

CERTIFICATE

09/2013 – 06/2015

Makrigianneio

Alimos, Greece

High school
• Grade: 18.3/20

Academic Excercises

02/2021 - 10/2022

NBA Result Prediction using Machine Learning and Deep Learning

NTUA, Athens, Greece

Python

learn more

02/2021 - 10/2022

Airbnb Price Prediction and Sentiment Analysis

NTUA, Athens, Greece

Python

learn more

02/2021 - 10/2022

Android Application for Melanoma Classification

NTUA, Athens, Greece

Python

LEARN MORE

02/2021 - 10/2022

Exploratory Data Analysis on the correlation between distribution of Covid-19 vaccines and GDP using R

NTUA, Athens, Greece

LEARN MORE

Testimonials

Here’s what my clients say

I highly recommend this business. The product quality is outstanding, exceeding my expectations every time. I was completely impressed with their professionalism and customer service. Pricing is fair and transparent - definitely value for money.