Sergey Balyuk
CTO at Apptopia
Ukraine
Summary
👤
Senior🎓
Top SchoolSergey Balyuk is a seasoned technology leader and CTO with 15 years of professional experience building multi-component systems across C++, Ruby on Rails, and networked environments. He combines hands-on development—especially in C++ multi-threaded programming, sockets and RADIUS implementations—with people leadership, coaching small onsite teams while actively contributing code. His background spans low-level work (Linux kernel packet classifiers, threads, and TCP/UDP networking) to web stacks (RoR, AJAX, Postgres and PL/pgSQL), giving him rare full-stack fluency from kernel to UI. At Apptopia he progressed from senior engineer to VP of Engineering and now CTO, demonstrating product-focused engineering leadership in a fast-moving startup. Notably, early work included porting and improving a PHP frontend to Rails and contributing fixes that reached Rails mainline, reflecting a pragmatic open-source mindset.
14 years of coding experience
8 years of employment as a software developer
Dnipropetrovsk Liceum of Information Technology (LIT)Magister Physics, Magister Physics at Dnipropetrovs'kij Nacional'nij Universitet
Stackoverflow
3,462reputation
125kreached
46answers
2questions
amazon-s3
top-5%
ruby-on-rails
top-5%
Github Skills (23)
amazon-s39
dse9
ruby-on-rails9
datastax-enterprise9
datastax8
cookbook8
activerecord6
simpleform6
highcharts6
agent6
rspec6
rails-migrations6
ruby6
cassandra6
postgresql6
Programming languages (1)
Github contributions (5)
apptopia/byte_buffer
May 2015 - Aug 2017
Contributions:49 commits, 16 pushes, 1 branch in 2 years 2 months
apptopia/cassandra_migrations
Apr 2015 - Aug 2017
Contributions:4 pushes, 2 branches in 2 years 4 months
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