Thaleia Vrontisi, Business Development & Project Management Specialist at DESFA SA – Hellenic Gas Transmission System Operator

Thaleia Vrontisi

Business Development & Project Management Specialist at DESFA SA – Hellenic Gas Transmission System Operator | Greece

Profile last verified July 2026
Oil & Energy Verified Profile Greece Rotterdam School of Management, Erasmus University
Verified

Personal Email

***@gmail.com

Personal • High Confidence

Phone Number

(**) *** *** 270

Greece • Phone

Free account · No credit card · 5 profiles/month

ContactOut Insights AI Generated

Thaleia Vrontisi currently works as a Business Development and Project Management Specialist at DESFA SA, the operator of the Greek National Natural Gas System. She holds an engineering degree alongside a Master of Science in Business Administration from the Rotterdam School of Management, Erasmus University. Her professional focus centers on supporting infrastructure development and energy security initiatives within Greece’s oil and energy industry.

BEST APPROACH TO REACH Thaleia Vrontisi

Reach out via LinkedIn by sending a concise note that outlines how your services or opportunity align with DESFA’s natural gas network modernization and regional energy security goals.

Thaleia Vrontisi Socials
Thaleia Vrontisi Work Experience

Business Development & Project Management Specialist at DESFA SA – Hellenic Gas Transmission System Operator in October 2023 - Present

CEO Office Analyst at DESFA SA – Hellenic Gas Transmission System Operator in December 2021 - November 2023

Supervisor | Energy Sector, Advisory Services at Grant Thornton Greece in March 2021 - December 2021

See more See less

Senior Consultant | Energy Sector, Advisory Services at Grant Thornton Greece in December 2019 - February 2021

Associate Consultant | Energy Sector, Advisory Services at Grant Thornton Greece in December 2018 - November 2019

Analyst | Energy Sector, Advisory Services at Grant Thornton Greece in May 2017 - December 2018

Analyst at Kantor Management Consultants in March 2016 - May 2017

Trainee at Kantor Management Consultants in January 2014 - June 2014

Department for the Supervision of Credit & Financial Institutions at Bank of Greece in October 2012 - October 2013

Thaleia Vrontisi Education

Rotterdam School of Management, Erasmus University, MscBA, August 2026

Alba Graduate Business School, Executive Program in Energy Business, August 2026

National Technical University of Athens, joined BSEng and MSc, August 2026

Thaleia Vrontisi Skills
Interpersonal Skills Contract Managers Project Implementation Project Control Presentations Matlab Microsoft Office Java C Credit SQL Programming Teamwork C++ Microsoft Excel Energy Management HTML English Team Leadership Analysis Data Analysis Windows Project Management Management
About Thaleia Vrontisi’s Current Company
DESFA SA – Hellenic Gas Transmission System Operator

DESFA, as the Operator of the Greek National Natural Gas System, operates and develops with safety and innovation a wide network of modern infrastructure throughout the country, while paving the way for a greener future. With significant experience and highly qualified personnel, we make a decisive contribution to energy security and the diversification of supply sources in Greece and the wider region, positioning the country as a key energy gateway. We strengthen the competitiveness and extroversion of the Greek economy, having been established as a reliable partner in the development, operation, and management of gas infrastructure in Southeast Europe and beyond. At the same time, we are leading the energy transition, investing in a sustainable and innovative energy network, with the goal of achieving carbon neutrality by 2040. We are evolving every day, working towards the faster integration of renewable gases, with a focus on hydrogen and biomethane, as well as promoting cutting edge energy solutions and technologies such as carbon capture and storage.

Discover more about DESFA SA – Hellenic Gas Transmission System Operator
Thaleia Vrontisi’s Colleagues

Chief Legal and Governance Counsel at Desfa S.A

General Counsel _Head of Legal Affairs Division at DESFA SA
(April 2007 – Present)

George Katsis

George Katsis

Greece

Process Safety Engineer | Chemical Engineer at DESFA - Hellenic Gas Transmission System Operator

Process Safety Engineer at DESFA
(April 2024 – Present)

MBA, MEng | Carbon Capture Storage (CCS) Head at DESFA SA

Carbon Capture & Storage (CCS) Head at DESFA
(October 2025 – Present)

Marianna Kourti

Marianna Kourti

Greece

Internal Communication Senior Professional at DESFA

Internal Communication Senior Professional at DESFA
(February 2024 – Present)

Zois Katiforis

Zois Katiforis

Athens Metropolitan Area

Energy Market Analysis and Forecasting - Strategy and Development @DESFA

Senior Energy Market Modelling Professional at DESFA
(September 2025 – Present)

Marinos Belis

Marinos Belis

Greece

Master of Science - MS at University of Western Macedonia

Electrical Foreman at DESFA
(June 2024 – Present)

Search similar profiles
Frequently asked questions about Thaleia Vrontisi

What is Thaleia Vrontisi email address?

Email Thaleia Vrontisi at [email protected] and [email protected]. This email is the most updated Thaleia Vrontisi's email found in 2026.

How to contact Thaleia Vrontisi?

To contact Thaleia Vrontisi send an email to [email protected] or [email protected]. (updated on July 2026)

What company does Thaleia Vrontisi work for?

Thaleia Vrontisi works for DESFA SA – Hellenic Gas Transmission System Operator.

What is Thaleia Vrontisi's role at DESFA SA – Hellenic Gas Transmission System Operator?

Thaleia Vrontisi is Business Development & Project Management Specialist

What industry does Thaleia Vrontisi work in?

Thaleia Vrontisi works in the Oil & Energy industry.

Find anyone, anywhere
with ContactOut today

Making remote or global hires? Connecting
with key decision-makers? We can help.

  • 40 emails / month
  • 3 phone numbers / month
  • Works on standard LinkedIn only
  • Work emails, personal emails,
    mobile numbers
* 1 user per company limit

No credit card required

Try ContactOut for Free