Andrew Karelskiy
Ruby Developer at TaxDome
Serbia
Summary
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SeniorAndrew Karelskiy is a Ruby developer with nine years in the industry and seven years focused on Ruby/Rails products, currently building backend systems at TaxDome from Serbia. He has experience modernizing legacy Rails applications into API-first architectures, improving performance (notably cutting an XLSX processing job from 10 minutes to 10 seconds) and resolving complex race conditions in background workers. His background spans fintech-grade auction platforms, CRM systems for large facilities, and SaaS products where he handled integrations, Docker/Nginx deployment, and payment/analytics tooling. He regularly takes on code review, mentoring, and requirements gathering, bridging engineering and business needs. Comfortable across fullstack concerns, he brings a pragmatic blend of refactoring discipline and shipping new features under production constraints. Notably, he pairs hands-on optimization wins with mentorship and operational ownership in mid-stage startup environments.
9 years of coding experience
7 years of employment as a software developer
Github Skills (31)
poller9
qr-code9
parser8
controller8
telegram-bot7
svg7
telegram6
webcam6
barcode-scanner6
javascript6
zxing5
ruby5
rails5
hot-reload5
async5
Programming languages (4)
Github contributions (5)
ternaryCat/fast_avatar
Sep 2021 - May 2022
Contributions:27 commits, 4 pushes, 1 branch in 8 months
ternaryCat/godot_wild_jam_17
Jan 2020 - Jan 2020
game for godot wild jam 17
Contributions:47 PRs, 25 pushes, 49 branches in 17 days
godot
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