Sergii Mostovyi
Principal Engineer at Agent Alfa
Ukraine
Summary
👤
Senior🎓
Top SchoolSergii Mostovyi is a Principal Engineer with over a decade of hands-on experience designing and operating high‑load web systems across international teams, now leading engineering at Agent Alfa. He brings deep expertise in the Ruby on Rails ecosystem combined with strong DevOps pedigree, having moved between backend, infrastructure, and integrations roles at companies like Teladoc Health, Couchsurfing, and CreditNinja. Sergii has a track record of shaping architecture and delivery—from founding a startup to leading architecture efforts—and enjoys bridging software delivery with Data Engineering and MLOps practices. His background in information security (M.S.) and early banking DevOps work inform a pragmatic focus on reliable, secure production systems. Known for stepping into both technical leadership and hands‑on implementation, he often surfaces infrastructure improvements that accelerate teams rather than just documenting designs. Based in Ukraine, he blends startup agility with enterprise-grade discipline to drive scalable, observable platforms.
13 years of coding experience
17 years of employment as a software developer
M.S., Computer and Information Systems Security/Information Assurance, M.S., Computer and Information Systems Security/Information Assurance at Kharkiv National University of Radio ElectronicsKharkiv Lyceum of Economics "Impulse"
English, Russian, Ukrainian
Stackoverflow
1,381reputation
402kreached
21answers
6questions
Github Skills (94)
intelligent10
devtools9
testing9
opensearch9
traffic9
elasticsearch9
rails9
flutterflow9
python8
proxy8
amazon-ecs8
devops8
ecr8
golang7
file-format7
Programming languages (6)
Github contributions (5)
smostovoy/active_model_presenter
Jul 2017 - Sep 2018
Contributions:33 commits, 57 pushes, 1 branch in 1 year 1 month
smostovoy/uz-tickets
Jul 2012 - Apr 2016
Contributions:3 commits, 1 push in 3 years 10 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.