Mikhail Bortnyk
Cofounder at Kottans
Kyiv, Ukraine
Summary
👤
Senior🎓
Top SchoolMikhail Bortnyk is a seasoned software engineer and cofounder with 14 years of experience building web applications and leading teams from Kyiv, Ukraine. He specializes in Ruby (Rails/Sinatra), PHP, MySQL/Postgres, Memcached and rich client-side work with CoffeeScript, with deep experience across backend, DevOps and CI automation. As a cofounder and lecturer at Kottans he helped create Kiev’s local Ruby curriculum, blending hands-on teaching with product delivery. He led development teams at N-iX and core engineering at R&R Music, shipping full-stack features and improving deployment and testing practices. Earlier roles in systems administration and server operations give him strong operational instincts that inform reliable production systems. Known simply as “Coder” on GitHub, he combines practical engineering with a penchant for mentoring and developer education.
13 years of coding experience
14 years of employment as a software developer
Zhytomyr City Lyceum
English, Ukrainian, Russian
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (30)
mongo-driver9
sketchup9
mruby8
ruby8
software-design8
rails7
ruby-on-rails7
mongodb6
libc6
erlang5
api4
python3
wordle-game3
kotlin3
proxy3
Programming languages (6)
Github contributions (5)
vessi/mruby-mongo
Apr 2015 - Mar 2016
Contributions:46 commits, 9 PRs, 35 pushes in 10 months
mongomongo-drivermrubymongodb
vessi/erlcourses
Jun 2015 - Nov 2015
Slides and code for first Erlang courses
Contributions:20 commits, 7 PRs, 19 pushes in 5 months
erlang
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