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Seraphim K.

Krakow, Poland

$40/hr
4.5
35 jobs

Struggling to launch or scale your Apple-native app without technical debt? My name is Seraphim, a Senior iOS Developer with ๐Ÿ๐ŸŽ+ ๐ฒ๐ž๐š๐ซ๐ฌ experience, having shipped ๐Ÿ๐ŸŽ+ ๐ก๐ข๐ ๐ก-๐ช๐ฎ๐š๐ฅ๐ข๐ญ๐ฒ ๐š๐ฉ๐ฉ๐ฌ across iOS, macOS, and watchOS that are fast, polished, and seamlessly integrated into the Apple ecosystem. ๐Ÿ“ฑ ๐‡๐Ž๐– ๐ˆ ๐‚๐€๐ ๐‡๐„๐‹๐ ๐˜๐Ž๐” ๐„๐ง๐-๐ญ๐จ-๐„๐ง๐ ๐ข๐Ž๐’ ๐€๐ฉ๐ฉ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ โ€ข Building high-quality native apps for iPhone, iPad, Apple Watch, and Mac with clean, scalable code. ๐€๐ฉ๐ฉ ๐€๐ซ๐œ๐ก๐ข๐ญ๐ž๐œ๐ญ๐ฎ๐ซ๐ž & ๐‚๐จ๐๐ž๐›๐š๐ฌ๐ž ๐‘๐ž๐ฏ๐ข๐ž๐ฐ๐ฌ โ€ข Expert guidance on architecture, code quality, and technical debt reduction for existing projects. ๐’๐ฐ๐ข๐Ÿ๐ญ๐”๐ˆ & ๐”๐ˆ๐Š๐ข๐ญ ๐”๐ฌ๐ž๐ซ ๐ˆ๐ง๐ญ๐ž๐ซ๐Ÿ๐š๐œ๐ž๐ฌ โ€ข Designing Apple-native, polished UX strictly following Human Interface Guidelines. ๐€๐ฉ๐ฉ ๐’๐ญ๐จ๐ซ๐ž ๐’๐ฎ๐›๐ฆ๐ข๐ฌ๐ฌ๐ข๐จ๐ง & ๐‚๐จ๐ฆ๐ฉ๐ฅ๐ข๐š๐ง๐œ๐ž โ€ข Handling app deployment, store compliance, localization, and accessibility support. ๐€๐๐ฏ๐š๐ง๐œ๐ž๐ ๐…๐ž๐š๐ญ๐ฎ๐ซ๐ž๐ฌ ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง โ€ข Implementing Apple Pay, in-app purchases, Firebase, and companion app support for watchOS and macOS. ============================ ๐ŸŒŸ ๐—ช๐—›๐—”๐—ง ๐—–๐—Ÿ๐—œ๐—˜๐—ก๐—ง๐—ฆ ๐—ฆ๐—”๐—ฌ ๐ŸŒŸ โWorking with Seraphim has been an absolute pleasure. His iOS development skills are top-tierโ€”precise, efficient, and consistently reliable. He delivered high-quality work, communicated clearly, and always approached challenges with a problem-solving mindset. We feel incredibly lucky to have had the opportunity to work with him and would gladly do so again. Highly recommended for any iOS project.โž โ€“ Client โSeraphim is an absolute stud. He single-handedly built our app, and took it from concept to production in a matter of months, serving tens of thousands of users. Beautiful attention to detail, and a huge joy to have on the team. He cares deeply about his work and teammates, is a true professional, and stays up-to-date with the latest in iOS. You'd be stupid not to hire Seraphim.โž โ€“ Client โSeraphim was phenomenal to work with. He took over for a prior developer and immediately picked up where the project left off, without a hitch. His expertise in Swift and iOS development is second-to-none, and I am in constant awe of the solutions he's produced to solve the unique challenges I've sent his way. He met all deadlines I set while being very communicative of progress. Seraphim was always quick to hop on a conference call to discuss any problems I ran into, and was patient with me through to the end. It was a pleasure working with him, and I am eager to work with him again in the future.โž โ€“ Client ============================ ============================ ๐Ÿค ๐—Ÿ๐—˜๐—ง'๐—ฆ ๐—•๐—จ๐—œ๐—Ÿ๐—— ๐—ฌ๐—ข๐—จ๐—ฅ ๐—”๐—ฃ๐—ฃ Have an iOS project or need expert advice? ๐— ๐—ฒ๐˜€๐˜€๐—ฎ๐—ด๐—ฒ ๐—บ๐—ฒ ๐—ผ๐—ป ๐—จ๐—ฝ๐˜„๐—ผ๐—ฟ๐—ธ ๐˜๐—ผ๐—ฑ๐—ฎ๐˜† for a free consultation and clear path to a polished Apple-native app. I typically respond within 6 hours and prioritize timely, professional communication. ============================ ๐Ÿ› ๏ธ ๐“๐Ž๐Ž๐‹๐’ & ๐“๐„๐‚๐‡๐๐Ž๐‹๐Ž๐†๐˜ ๐‹๐š๐ง๐ ๐ฎ๐š๐ ๐ž๐ฌ & ๐…๐ซ๐š๐ฆ๐ž๐ฐ๐จ๐ซ๐ค๐ฌ โ€ข Swift โ€ข SwiftUI โ€ข UIKit โ€ข Combine โ€ข SwiftData โ€ข ARKit โ€ข Vision ๐๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ๐ฌ โ€ข iOS โ€ข iPadOS โ€ข macOS โ€ข watchOS ๐“๐จ๐จ๐ฅ๐ข๐ง๐  & ๐ƒ๐ž๐ฅ๐ข๐ฏ๐ž๐ซ๐ฒ โ€ข Xcode โ€ข Git โ€ข Fastlane โ€ข TestFlight โ€ข Firebase โ€ข Jenkins (CI/CD) ๐€๐ซ๐œ๐ก๐ข๐ญ๐ž๐œ๐ญ๐ฎ๐ซ๐ž & ๐๐ฎ๐š๐ฅ๐ข๐ญ๐ฒ โ€ข MVVM โ€ข TCA โ€ข VIPER โ€ข Coordinators โ€ข Protocol-Oriented Programming โ€ข XCTest โ€ข Swift Package Manager (SPM) ๐€๐ฉ๐ฉ ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง & ๐’๐ž๐ซ๐ฏ๐ข๐œ๐ž๐ฌ โ€ข StoreKit โ€ข Apple Pay โ€ข In-App Purchases โ€ข RESTful API โ€ข Localization & Accessibility ๐๐ซ๐จ๐ฃ๐ž๐œ๐ญ & ๐‘๐ž๐ฅ๐ž๐š๐ฌ๐ž ๐Œ๐š๐ง๐š๐ ๐ž๐ฆ๐ž๐ง๐ญ โ€ข App Store submission โ€ข CI/CD pipelines โ€ข Code review โ€ข Technical debt management iOS Development, Swift, SwiftUI, UIKit, WatchOS, Core Data, StoreKit, Firebase, Apple Xcode, Mobile App Development, AI and Agentic coding, Claude Code

  • Apple Xcode
  • Core Data
  • iOS Development
  • Swift
  • UIKit
  • iOS
  • iPadOS
  • watchOS
  • StoreKit
  • Mobile App Development
  • Firebase
  • SwiftUI
  • macOS
  • RESTful API
  • TestFlight
Dzmitry L.

Warsaw, Poland

$20/hr
5.0
2 jobs

Hi ๐Ÿ‘‹ I am an iOS developer with about 3 years of experience. I've been involved in many aspects of creating and maintaining applications, such as analysis, implementation, user interface design patterns and principles, writing unit tests, code reviews and etc. Tech stack: iOS, tvOS; Swift; Xcode; Combine, RxSwift, GCD; MVC, MVVM, MVP, VIPER, CleanSwift; UIKit, SwiftUI; TinyConstraints, SnapKit; Realm, Firebase, CoreData; REST, GraphQL; Fastlane, TestFlight distribution; CocoaPods, SPM, Carthage; SwiftGen, SwiftLint, SwiftFormat; CI/CD; XCTest; Git.

  • Apple Xcode
  • iOS
  • Swift
  • UIKit
  • RxSwift
  • Realm Database
  • tvOS
  • SpriteKit
  • SwiftUI
  • REST API
  • Git
  • XCTest
  • Fastlane
  • TestFlight
  • Jira

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