Senior iOS Engineer

Quadcode SaaS

. Develop and maintain the iOS application, including new business features and existing functionality .

Posted 11/9/2026full-timeRemote • GeorgiaSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in iOS application development using Swift, with a strong focus on clean code practices, architectural design patterns, and performance optimization. Proficient in integrating RESTful APIs and implementing unit and UI tests to ensure application stability and quality.

Highest-signal resume keywords

Swift ProgrammingIOS SDK ProficiencyRESTful API IntegrationUnit Testing with XCTestReactive Programming with RxSwift

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

SwiftIOS SDKCoreDataCoreAnimationAuto LayoutXcode Interface BuilderWebSocketMultithreadingAsynchronous ProgrammingArchitectural Patterns

Tools & Technologies

XCTestQuick/NimbleAI Development Tools

Industry Keywords

OOP PrinciplesModular ArchitectureMulti-Module ProjectsLegacy Code RefactoringJSON Processing

Tech Stack

Tools & technologies

iOSRxSwiftSwift

About the role

Key responsibilities & impact

Develop and maintain the iOS application, including new business features and existing functionality
Contribute to redesign and modernization, including adaptive UI across screen sizes and device families
Design and improve application architecture and platform-level solutions in a multi-module environment
Integrate RESTful APIs, handle network requests, and implement WebSocket and other socket-based connections
Work with CoreData, multithreading, and asynchronous operations for performance and stability
Maintain, refactor, and improve legacy code safely
Develop and maintain unit and UI tests
Troubleshoot and debug technical issues, identify performance bottlenecks, and implement solutions
Participate in code reviews and collaborate with designers, product managers, QA Engineers, and developers
Use AI tools to improve development workflows, code quality, and engineering efficiency

Requirements

What you’ll need

Deep knowledge of Swift and experience writing clean, efficient, and maintainable code
Strong understanding of the iOS SDK, including UIKit, CoreData, and CoreAnimation
Experience with Auto Layout and Xcode Interface Builder
Experience integrating RESTful APIs, working with network requests, handling server responses, and processing JSON data
Experience working with WebSocket and other socket protocols, including establishing and maintaining persistent connections with a server
Experience maintaining, refactoring, and improving legacy code without disrupting existing functionality
Experience writing unit and UI tests; knowledge of XCTest and Quick/Nimble
Deep understanding of OOP principles and their practical application in iOS development
Experience applying architectural and design patterns such as MVC, MVVM, VIPER, etc.
Experience working with modular architectures and multi-module iOS projects
Strong knowledge of reactive programming and practical experience with RxSwift
Understanding of multithreading and asynchronous programming in iOS
Experience working with third-party libraries and dependencies
Fluent in Russian and at least B1 level of English

Benefits

Comp & perks

Full-time remote work (service provider contract)
Competitive compensation (EUR)
20 paid days off annually
Corporate AI subscriptions (Claude, Gemini, GPT, etc.)
Access to a rewards marketplace offering products and language courses, redeemable using the company’s internal currency
A strong team of engineers
Positive and friendly atmosphere
Opportunity to contribute creative ideas and directly influence the product’s architecture and technical direction