Aaron Kaswen-wilk
Staff Software Engineer at Qonto
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolAaron Kaswen-wilk is a Staff Software Engineer based in Berlin with 8 years of experience building backend systems across fintech and food-tech, currently scaling platform services at Qonto. He transitioned from a music-focused academic background and freelance musician to engineering, bringing disciplined focus and an ear for system-wide harmony to distributed systems and Go/Ruby codebases. Aaron progressed rapidly from junior Ruby roles to professional Go engineering at Solarisbank and senior backend positions at HelloFresh before stepping into leadership at Qonto. He combines deep backend pragmatism with a collaborative, team-oriented approach and a penchant for learning new technologies. Colleagues describe him as both technically reliable and unexpectedly creative—qualities rooted in his formal training in voice and piano. This mix of engineering rigor and creative perspective helps him simplify complex domains while keeping team morale high.
8 years of coding experience
9 years of employment as a software developer
Master's degree Vocal Performance, Master's degree Vocal Performance at Texas Tech UniversityBachelor of Arts - BA Music, Bachelor of Arts - BA Music at University of Miami
English, German
Stackoverflow
23reputation
114reached
0answers
1question
Github Skills (32)
unit-testing10
javascript10
testing10
css10
ruby10
gherkin10
testify10
mocks10
go10
mocking10
html10
golang10
nodejs10
web-development10
ruby-on-rails10
Programming languages (5)
Github contributions (5)
akaswenwilk/vim_config
Aug 2019 - Feb 2025
Contributions:247 pushes, 1 branch in 5 years 7 months
akaswenwilk/boardgame
Jun 2020 - Jul 2021
Contributions:1 PR, 32 pushes, 1 branch in 1 year
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