Sergey Tsvetkov
Chief Technology Officer at Urban Connect
Zurich, Zurich, Switzerland
Summary
🤩
Rockstar🎓
Top SchoolSergey Tsvetkov is a pragmatic CTO and software engineer with 12+ years of experience building full-stack, cloud-native systems and embedded firmware across startups and scale-ups. Based in Zurich, he has led end-to-end product delivery at Urban Connect—driving a migration to Docker/Nomad/Azure with 8x backend performance gains, building parking and EV charging integrations, and shipping in-house computer vision models for license plate recognition. He started in C/C++ on Unix, moved through Java and Rails (including contributions to the popular FriendlyId Rails gem), and now blends Go, Python and PyTorch for hardware-connected ML solutions. Sergey pairs hands-on engineering—cross-compiled Go firmware for Raspberry Pi Zero, mobile app modernizations, and React back-office systems—with operator-minded product leadership and startup founder experience. A long-distance runner and reader, he brings practical business sense from founding a delivery company and prefers building durable, efficient solutions over flashy tooling.
12 years of coding experience
12 years of employment as a software developer
Master's degree Information Technology, Master's degree Information Technology at Tver State University
Russian, English
Stackoverflow
562reputation
21kreached
23answers
2questions
Github Skills (17)
ruby-rails10
testing10
rails10
friendly-url10
plugin10
ruby10
activerecord10
mysql8
ruby-on-rails6
attribute6
blacklight6
friendly-id6
telegram-bot6
boolean6
attr6
Programming languages (6)
Github contributions (5)
norman/friendly_id
Jan 2016 - Feb 2016
FriendlyId is the “Swiss Army bulldozer” of slugging and permalink plugins for ActiveRecord. It allows you to create pretty URL’s and work with human-friendly strings as if they were numeric ids for ActiveRecord models.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 commits, 12 PRs, 11 pushes in 1 month
Contributions summary:Sergey primarily contributed to bug fixes and improvements within the Ruby on Rails framework. They addressed issues related to the interaction between different modules like `finders` and `history`, ensuring correct functionality. The user also optimized the application by fixing issues regarding the generation of slugs and the use of `sequentially_slugged`. Furthermore, the user modified the test suite and specified gem versions for MySQL to support different Rails versions.
armyrailsstringsslugifyruby
trickstersio/go-create-react-app
Jun 2018 - Apr 2020
Contributions:10 commits, 8 pushes, 1 branch in 1 year 10 months
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