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Daniil Nikonchik

@daniilnikonchik

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Senior iOS Developer building scalable Swift apps with clean architecture, great UX, and measurable performance gains.

Belarus

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What I'm looking for

I’m looking for a remote role where I can build native iOS apps in Swift/SwiftUI, apply Clean Architecture and solid testing/CI/CD, and keep improving performance and UX—while mentoring teammates through code reviews.

I’m an iOS Developer with 5 years of experience building and maintaining production mobile applications, specializing in native Swift development and strong UI/UX implementation. I work end-to-end from design to release and ongoing maintenance for apps with significant user bases.

In my most recent role, I developed a flagship e-commerce app (500K+ MAU) from scratch using SwiftUI + Combine, migrating from legacy UIKit. I designed a modular Clean Architecture + Coordinator setup that reduced build time by 40%, and I improved stability by replacing GCD with async/await (crash rate down 25%).

I also build reliable delivery pipelines and quality practices—CI/CD with GitHub Actions + Fastlane, automated testing (XCTest/UI tests, TDD, snapshot testing), and mentoring through code reviews. I’m drawn to teams that value clean engineering, performance, and thoughtful collaboration.

Experience

Work history, roles, and key accomplishments

Current

Senior iOS Developer

Current

ООО «ТехноСофт»

Jan 2023 - Present (3 years 5 months)

Developed a flagship e-commerce app (500K+ MAU) from scratch with SwiftUI + Combine, migrating from a legacy UIKit codebase. Cut build time by 40% with Clean Architecture + Coordinator, reduced crash rate by 25% using async/await, and set up CI/CD (GitHub Actions + Fastlane).

Swift SwiftUI Combine Coordinator Pattern Async Await CI CD Fastlane

Middle iOS Developer

ФинТех Решения

Jan 2021 - Jan 2023 (2 years)

Built and maintained a banking app (1M+ installs) using UIKit + MVVM. Improved performance (launch time -30%, memory -20%), integrated Face ID/Touch ID with Keychain-secured storage, and implemented push notifications and background fetch for near real-time updates.

Swift UIKit MVVM Performance Optimization Keychain Push Notifications Alamofire Unit Testing

Junior iOS Developer

Мобайл Старт

Jan 2020 - Jan 2021 (1 year)

Developed 3 client apps in the education and fitness domains using VIPER architecture and integrated third-party APIs (Google Maps, social networks, payment gateways). Increased automated test coverage from 10% to 60% with XCTest, and published apps to the App Store while handling Apple review rejections.

Swift UIKit VIPER Cocoapods Firebase XCTest App Store Release Support

Education

Degrees, certifications, and relevant coursework

Belarusian State University

Bachelor of Science, Information Technology

2019 - 2023

Activities and societies: Completed Apple Developer Academy (SwiftUI) and ObjC.io (Advanced Swift); contributed to popular Swift open-source packages.

Earned a Bachelor of Science in Information Technology at Belarusian State University from 2019 to 2023.