Jacek Spólnik
Lead Software Engineer at DolarApp
Krakow, Lesser Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolJacek Spólnik is a Lead Software Engineer with 13 years of experience crafting high-quality, scalable systems and fostering a software craftsmanship culture across teams. He combines hands-on architecture and Java expertise with leadership in platform engineering, modularisation, and blockchain-enabled solutions, having driven projects at Revolut, UBS and DolarApp. A pragmatic advocate of extreme programming, TDD/BDD and pair programming, he excels at turning legacy codebases into maintainable, high-performance platforms while mentoring engineers at scale. He routinely shares his learnings at conferences and via open source, bringing an educator’s mindset to engineering problems. Based in Krakow, he blends deep technical rigor with people-first coaching, often taking the role of team facilitator as well as architect.
13 years of coding experience
7 years of employment as a software developer
Master's Degree, Computer Science, 4.5, Master's Degree, Computer Science, 4.5 at Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
English, Polish
Stackoverflow
21reputation
1kreached
4answers
0questions
Github Skills (71)
jwt-authentication10
dao10
elk10
jwt10
kafka10
java10
spring-boot10
kotlin10
algorithms10
redux10
webpack10
authorization-server10
react10
kotlin-android9
sql9
Programming languages (9)
Github contributions (5)
spolnik/JAlgoArena-Problems
Dec 2016 - May 2018
Contributions:35 releases, 133 commits, 125 pushes in 1 year 4 months
javaproblems
spolnik/payment-service
Aug 2018 - Aug 2018
Contributions:51 commits, 41 pushes, 1 branch in 5 days
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