Our Team

We are located in Amsterdam and Delft in the Netherlands and our team members each specialize in different disciplines. There is, however, one important thing that connects us: we all love spreadsheets! That’s why we created PerfectXL. For better spreadsheets. All over the world.

Team PerfectXL

Mateo Mol

Mateo Mol - Director :: Team PerfectXL

Director

Mateo has always been crazy about numbers and about games. He studied econometrics and politics. For years, he was a publisher and founder of several online and print media. With Infotron, he found the optimal combination of doing business and playing with numbers.

Mateo on LinkedIn

Felienne Hermans

Felienne Hermans - Founder :: Team PerfectXL

Founder of Infotron

Felienne is Assistant Professor at the Delft University of Technology, where she researches end-user programming. She founded Infotron while she was working on her PhD. Felienne just loves spreadsheets, but also Lego. And she is head of the TU Delft Spreadsheet Lab.

Felienne on LinkedIn

Roel van der Steen

Roel van der Steen - Developer :: Team PerfectXL

Developer

Roel is an experienced software developer. During his career, Roel has worked on a multitude of projects, large and small. He is very focused on the code quality of the PerfectXL tool itself, because: “You have to practice what you preach.” In his free time, Roel likes rowing and hiking in the mountains.

Roel on LinkedIn

Joeri van Veen

Joeri van Veen - Developer :: Team PerfectXL

Developer

Joeri studied Media Technology at Hogeschool Utrecht. He is driven, analytical, creative and he has an eye for detail. Programming and photography are right up his alley. He joined Infotron during his graduation and now works full time unifying technology, design and business needs.

Joeri on LinkedIn

Jucelino Santos Fortes

Jucelino Santos Fortes - Developer :: Team PerfectXL

Developer

Jucelino grew up with games and three competitive brothers. They loved games so much that he started developing games during his childhood. He studied Applied Mathematics at the Hague University and TU Delft, because his lust for solving puzzles had exceeded games. He just recently started working for Infotron and he’s enjoying every moment.

Sohon Roy

Sohon Roy - Developer :: Team PerfectXL

Developer

Sohon is pursuing a PhD in Software Engineering at Delft University of Technology. He pushes forward the cutting edge technology used within PerfectXL by formulating, implementing, and evaluating new research ideas. In addition, Sohon also enjoys devoting his skills towards the continuous improvement and enhancement of the PerfectXL application.

Sohon on LinkedIn

Arie van Deursen

Arie van Deursen - Co-founder :: Team PerfectXL

Co-founder Infotron

Arie was Felienne’s professor and supervisor during her PhD and was closely involved in the creation of Infotron, Previously, he successfully co-founded the Software Improvement Group. Despite his professorship, Arie has always been the smart programmer that he wanted to be when he was young.

Arie on LinkedIn

Anne Jellema

Anne Jellema - Online Strategist :: Team PerfectXL

Online Strategist

Anne is an independent online strategist and co-owner of JB Promotions Online Advertising & Social Media. She helps Infotron by being responsible for the online presence and online authority of PerfectXL within its niche.

Anne on LinkedIn

Lajla Brinkhoff

Lajla Brinkhoff - Online Marketeer :: Team PerfectXL

Online Marketeer

Lajla is an independent online marketeer and co-owner of JB Promotions Online Advertising & Social Media. She takes care of the online campaigns for PerfectXL that run on social media and Adwords. 

Lajla on LinkedIn