Roman Kellner
CTO at Nexxchange Services
Vienna, Austria
Summary
👤
Senior🎓
Top SchoolRoman Kellner is a seasoned technology leader and CTO based in Vienna with over 30 years of hands-on experience building and launching electronic trading and exchange systems, from the first electronic stock exchange implementations in Kuwait and Lima to modern SaaS platforms like GolfSuite and Multi-Trading. He combines infrastructure foresight, R&D-driven prototyping, and team empowerment to anticipate lasting tools and patterns while keeping operations efficient. Known for patient, goal-focused leadership, he has repeatedly led complex onsite go-lives and integration projects for exchanges and clearing houses across continents. Beyond executive duties he remains a pragmatic technologist who enjoys keeping disparate pieces working together—literally “waiting for snow while keeping everything together.”
11 years of coding experience
1 year of employment as a software developer
Vienna University of Technology
English, Spanish, German
Stackoverflow
43reputation
574reached
0answers
1question
Github Skills (56)
python8
ansible8
css7
ssh7
jpa6
jooq6
automation6
sql6
devops6
scala6
java6
mysql6
database5
hibernate5
svg5
Programming languages (4)
Github contributions (5)
xtradesoft/nexxchange-teetime-widget
Jun 2016 - Jun 2021
Contributions:17 commits, 14 pushes, 1 branch in 5 years 1 month
xtradesoft/xtradesoft.github.io
Jul 2017 - Dec 2022
Contributions:108 commits, 99 pushes, 1 branch in 5 years 5 months
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