Jaroslav Sumbal
Engineering Team Lead at VESTBERRY
Slovakia
Summary
👤
Senior🎓
Top SchoolJaroslav Sumbal is an engineering team lead with 11 years of experience building user-centric software products from front-end UX to product strategy. Based in Slovakia, he progressed from junior engineering roles into UX design and product management before stepping into engineering leadership at VESTBERRY, giving him a rare combination of hands-on development, design sensibility, and product ownership. His MA in User Experience Design and a bachelor’s in Informatics underpin a pragmatic approach to translating complex client needs into intuitive, reliable systems. Known for bridging teams and disciplines, he focuses on shipping impactful features while aligning design, engineering, and business goals. A detail not obvious from titles alone: his career path shows a deliberate shift from crafting user experiences to steering cross-functional delivery, making him adept at both ideation and execution.
11 years of coding experience
5 years of employment as a software developer
Bachelor's degree Informatics, Bachelor's degree Informatics at Slovenská technická univerzita v BratislaveMaster of Arts (M.A.) User Experience Design, Master of Arts (M.A.) User Experience Design at Loughborough UniversityPrior Park College
English, Slovak, Spanish
Github Skills (20)
bitcoin8
cryptocurrency8
lightning8
peer-to-peer7
daemon7
blockchain7
cryptography7
wallet7
c-lightning6
android6
nostr6
lightning-network6
sketch5
typescript5
react-native5
Programming languages (4)
Github contributions (5)
Crakeh/ICP_pages
Oct 2015 - Dec 2015
Contributions:54 pushes in 1 month
Slaaavo/UI-1-zadanie
Feb 2015 - Mar 2015
Contributions:7 pushes, 1 branch in 10 days
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