Vladyslav Sumskyi
Seniour Full-Stack Developer at Mackenzie Laboratories, Inc.
Kyiv, Ukraine
Summary
👤
Senior🎓
Top SchoolVladyslav Sumskyi is a senior full-stack developer and architect with 16+ years focused on Ruby/Rails ecosystems, modern front-end stacks (Angular/TypeScript, Stimulus/Hotwire), and robust automated testing practices. He has led architecture, legacy refactoring, and DevOps-oriented deployments across healthcare, e-learning, and IoT projects, frequently mentoring teams and owning end-to-end delivery. His recent work blends Rails 7, Docker, Sidekiq, PostgreSQL and AWS with MQTT-based IoT integrations—illustrating an uncommon pairing of backend expertise and device-level systems. Known for pragmatic code reviews and performance-focused refactors, he consistently brings legacy systems to maintainable, testable states. Based in Kyiv, he combines deep backend architecture experience with hands-on front-end and QA discipline to ship reliable, production-grade software.
16 years of coding experience
9 years of employment as a software developer
Ing. International Economics, Ing. International Economics at Ekonomická univerzita v Bratislavefired Электрификация и автоматизация Сельского Хозяйства, fired Электрификация и автоматизация Сельского Хозяйства at Украинская сельскохозяйственная академия
Slovak, English
Stackoverflow
1,827reputation
159kreached
54answers
0questions
ruby
top-5%
ruby-on-rails
top-5%
Github Skills (62)
ruby9
initializer9
ruby-on-rails9
omniauth7
pry7
sprockets7
activerecord6
database6
asset-pipeline6
settimeout6
amazon-s36
devise6
internationalization6
rails6
authentication6
Programming languages (3)
Github contributions (5)
sumskyi/dotfiles
May 2012 - Dec 2022
Contributions:129 commits, 48 pushes in 10 years 9 months
sumskyi/padrino-pagination
May 2010 - Jul 2014
Contributions:18 commits in 4 years 2 months
padrinopagination
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