‘Our team is driven to find solutions that look
simple but have great impact.’

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Team CelSian

 

As an independent entity we support all major glass manufacturers and suppliers around the world with our services. In our diverse team we have leading academic experts as well as hands-on operational experience from various glass segments.

CelSian is employee-owned. We are not a traditional company, but merely a movement. We are all driven by making a positive impact to this planet, and believe glass can become a crucial element of a circular economy.

We are your partner for future-proof glass!



Ankith John
Santosh
Ankith joined CelSian fresh from Delft Technology University in 2020 as a CFD Engineer.
CONTACT ANKITH


Corinne
Claireaux
Corinne joined CelSian in 2019 with international experience in glass and glass wool research. With a passion for training, Corinne heads up our Academy.
CONTACT CORINNE


Christian
Räbiger
Technical Director EU: Christian joined CelSian in 2024 as Technical Director, bringing over 13 years of invaluable experience in furnace planning, optimization, and R&D work. His expertise enhances our commitment to serving European customers with excellence.
CONTACT CHRISTIAN


Cristian
Hernandez
Cristian joined CelSian as a Project Leader in 2022. He worked as a Glass Science Engineer in several plants in South America, bringing more than 8 years of manufacturing experience to the team. He also joined our Academy as a new trainer.
CONTACT CRISTIAN


Harmen
Kielstra
Harmen joined CelSian as managing director in 2016, bringing more than 15 years of collaboration and innovation experience to the team.
CONTACT HARMEN


Hector
Rodriguez
Hector is our pre-processing specialist since 2019, all our great CFD projects start with his meshing expertise. Hector also trains our GTM-X customers on pre-processing.
CONTACT HECTOR


Helga
van der Meer
Helga joined us in 2016 and takes care of our finance and administration at CelSian.
CONTACT HELGA


Johan
Lötter
Johan joined CelSian as a CFD Engineer in 2019. He brings more than 10 years of float manufacturing experience to the team. Johan looks after our operations and sometimes give training for our Academy.
CONTACT JOHAN


Johan
van der Dennen
Johan joined CelSian just before the spin-off with TNO. He looks after our software development and novel applications.
CONTACT JOHAN


Jori
Roosenburg
Jori joined Celsian in 2023 as a Software Engineer. He brings a deep passion for physics and programming, which he will use to drive furnace modeling to the next level.
CONTACT JORI



L.G.
Financial Administrator: Lilly joined us in 2024; she takes care of our financial administration with her years of experience in Finance.
CONTACT L.G.


Luuk
Thielen
Luuk joined TNO in 2003 and was part of the original spin out team that formed CelSian in 2012. He works as CFD Engineer as well as software engineer for us.
CONTACT LUUK


Marco
van Kersbergen
Marco joined TNO in 1993 and moved with the original team into CelSian in 2012. He is our equipment and measurements specialist, and responsible for all sensor installations at our customers.
CONTACT MARCO


Mathi
Rongen
Mathi joined CelSian in 2006 and moved with the original team into CelSian in 2012. He runs laboratory and R&D projects based on his rich experience in flat and display glass technology.
CONTACT MATHI


Oscar
Verheijen
Oscar joined CelSian in 2013 and is chairman of GlassTrend, our global R&D network. He also supports our training Academy, and runs multi-lateral R&D projects.
CONTACT OSCAR


Penny
Marson
Penny joined CelSian just after the spin out from TNO. She runs laboratory projects and is our glass defects expert in the team.
CONTACT PENNY


Samira
Goli
Marketing Communication Specialist: Samira joined CelSian as a Marketing communication specialist in 2023. With over seven years of marketing experience and a recent MSc in Business Communication, she brings invaluable expertise to our team.
CONTACT SAMIRA


Savari
Kognole
Savari joined CelSian as a CFD Engineer in 2022 with a Master’s degree from Ecole Centrale de Nantes in France.
CONTACT SAVARI


Scott
Cooper
To serve our North American customers even better, Scott joined CelSian in 2023 as Technical Director
CONTACT SCOTT


Sjoerd
Stelwagen
Sjoerd joined CelSian in 2021 as a senior project manager glass technology and equipment with over 15 years of operational experience in container glass. He leads many projects for our clients as well as supporting our training Academy.
CONTACT SJOERD


Tim
van Lier
Tim joined CelSian in 2022 as a CFD engineer with a master's degree in mechanical engineering from the Eindhoven University of Technology.
CONTACT TIM
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