Dmytro Khmelenko
Senior Software Engineer Technical Lead at Preply
Munich, Bavaria, Germany
Summary
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Senior🎓
Top SchoolDmytro Khmelenko is a Senior Software Engineer and Technical Lead with 11 years of experience building scalable backend systems, mobile apps, and cloud-native architectures from Munich. He currently leads a team at Preply improving payments at scale—reducing fraud by 80% via AI-driven automation, optimizing fees, and implementing self-healing monitoring—while previously shaping data pipelines and attribution systems at Shopify. Comfortable across Ruby on Rails, Scala, Kotlin/Java and cloud platforms (GCP, AWS), he blends hands-on implementation with long-term engineering strategy and cross-team collaboration. Dmytro’s background in both mobile and backend development gives him a unique end-to-end perspective on product performance and user experience. He’s a pragmatic problem-solver who favors measurable business outcomes over tool hype and continually explores emerging tech to keep systems efficient and reliable.
11 years of coding experience
12 years of employment as a software developer
Master's degree, Computer Engineering, Master's degree, Computer Engineering at National technical university 'Kharkiv politechnic institute'
Ukrainian, English, German, Spanish
Github Skills (101)
python10
deep-learning10
floating10
android-client10
floatingactionbutton10
github-app10
reactive-extensions10
xiaomi10
api10
observable10
api-rest10
probot10
java10
tensorflow10
sticky10
Programming languages (10)
Github contributions (5)
dkhmelenko/CacheImage
Apr 2016 - Jul 2017
Contributions:5 commits, 43 pushes, 1 branch in 1 year 3 months
dkhmelenko/miband-android
Jun 2016 - Feb 2020
Unofficial SDK for Xiaomi Mi Band
Contributions:17 commits, 17 PRs, 116 pushes in 3 years 8 months
bandmi-bandandroidsdkxiaomi-mi
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