Sergey Abramchuk
Lead IOS App Developer at ESN LTD.
Arkhangelsk, Arkhangelsk Oblast, Russia
Summary
👤
Senior🎓
Top SchoolSergey Abramchuk is a seasoned iOS lead with over 11 years in software development and more than seven focused on Swift and Objective-C mobile apps, currently leading iOS efforts at ESN LTD. He combines deep platform knowledge—from UIKit and StoreKit to Network Extension, Vision and Metal—with solid engineering principles (DRY, KISS, SOLID) and architectures like MVVM-C. Sergey has shipped production apps at companies including Yandex and contributed to lower-level networking security by updating critical OpenVPNAdapter dependencies such as mbedTLS and Asio. Comfortable across languages (C/C++, C#, Python) and both app and systems-level work, he brings a rare mix of UX-aware frontend skills and backend/integration experience. Based in Arkhangelsk, he pairs disciplined craftsmanship with a quietly poetic side—his GitHub bio hints at a thoughtful perspective beyond code.
11 years of coding experience
11 years of employment as a software developer
Information Technology, Information Technology at Northern (Arctic) Federal University
Русский, Английский
Github Skills (8)
lz410
dependency-management10
c-language10
mbedtls10
cprogramming-language10
asio10
security9
openvpn9
Programming languages (6)
Github contributions (5)
ss-abramchuk/OpenVPNAdapter
Jan 2018 - Mar 2022
Objective-C wrapper for OpenVPN library. Compatible with iOS and macOS.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:320 commits, 16 PRs, 327 pushes in 4 years 2 months
Contributions summary:Sergey's primary contribution centers around updating dependencies, specifically within the mbedTLS and Asio libraries. This is demonstrated by a series of commits involving the addition of patches to integrate new features and address security vulnerabilities. These changes involved modifying build scripts and integrating updated libraries with the existing codebase. The user also incorporated the updated LZ4 library.
objective-cc-wrappervpniosmacos
ss-abramchuk/RakNetWrapper
Jul 2016 - Aug 2020
Contributions:90 pushes, 5 branches, 18 tags in 4 years 1 month
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