Ján Raška
Chief Technology Officer at Dealonomy
Slovakia
Summary
👤
Senior🎓
Top SchoolJán Raška is a seasoned technology executive and hands-on engineering leader with 14+ years building scalable, distributed systems and a current role as CTO at Dealonomy. He has led backend and platform teams through growth-stage challenges, previously serving as CTO at MeWe where he helped architect a privacy-focused social network and earlier rose through senior Scala backend roles. A strong Scala practitioner and open-source contributor, he has maintained and improved the well-regarded squeryl DSL, showing attention to type-safe database interactions and long-term code quality. Ján blends product-minded leadership with deep technical craft—particularly in backend architectures, AI/ML enthusiasm, and systems that prioritize user privacy. Based in Slovakia, he combines startup founding experience with enterprise engineering management, often favoring pragmatic refactors and robust exception handling over quick fixes.
14 years of coding experience
17 years of employment as a software developer
High School International Baccalaureate, High School International Baccalaureate at Pearson College UWCBachelor's degree Computer Science, Bachelor's degree Computer Science at University of Zilina
English
Github Skills (7)
dsl10
databases10
database10
scala10
sql9
refactoring7
testing6
Programming languages (5)
Github contributions (5)
squeryl/squeryl
Oct 2011 - Nov 2011
A Scala DSL for talking with databases with minimum verbosity and maximum type safety
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 commits in 1 month
Contributions summary:Ján primarily focused on bug fixes and enhancements to the `squeryl` Scala DSL for database interaction. They addressed issues related to foreign key declarations, implemented exception handling for non-local return control, and refactored code to avoid return statements. Additionally, they worked on naming convention transforms and merged upstream changes, demonstrating a commitment to project maintenance and code quality.
databasedatabasesdslscalatype-safety
softwavesk/payBySquare4s
Jul 2020 - Oct 2021
Contributions:7 releases, 10 commits, 9 pushes in 1 year 3 months
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