Sergei Guselnikov
Mobile Developer at Kisko Labs
Helsinki, Finland
Summary
👤
Senior🎓
Top SchoolSergei Guselnikov is a mobile developer with 12 years of hands-on iOS experience, currently building apps at Kisko Labs in Helsinki. He has held senior iOS roles at startups and enterprises including Tulipshare, Urban and IBM, and a long history of freelance and contract work that honed his pragmatic, architecture-first approach. Colleagues value his deep understanding of app architectures, tooling and dependencies, and his emphasis on short feedback loops and strong cross-functional communication. Sergei combines solid academic grounding in computer science and physics with a knack for being one of the small-number contributors who carry projects end-to-end. He prefers practical, team-oriented delivery over ivory-tower design, making him effective across both greenfield and maintenance-heavy codebases. Fluent in navigating startup pace and enterprise constraints, he brings reliability and clear engineering judgment to mobile product execution.
12 years of coding experience
8 years of employment as a software developer
Bachelor's degree, Physics, Bachelor's degree, Physics at Saint Petersburg State UniversityEngineer's degree, Computer Science, Engineer's degree, Computer Science at Saint Petersburg State Mining Institute named after G. V. Plekhanov (Technical University)
English, Finnish
Github Skills (113)
uitextview10
attributedstring10
xcuitest10
cocoa10
reactivecocoa10
nsattributedstring10
reactiveswift10
obj10
swift10
uilabel10
appium-ios10
hashtag10
macos10
ios10
uisegmentedcontrol10
Programming languages (10)
Github contributions (5)
arietis/codility-swift
Feb 2016 - Mar 2016
Contributions:57 commits, 56 pushes, 1 branch in 1 month
arietis/swift-snapshot-testing
May 2021 - Oct 2023
📸 Delightful Swift snapshot testing.
Contributions:2 PRs, 8 pushes, 3 branches in 2 years 5 months
testingsoftware-qualityswiftiossnapshot
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