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Hi, I’m Olga Covaliova, an iOS developer passionate about building scalable, product-oriented apps. I specialize in SwiftUI, UIKit, MVVM, and Clean Architecture, and I’m committed to writing maintainable, testable code that ships features users love. I enjoy collaborating with cross-functional teams to tackle architectural challenges, integrate REST APIs, and implement robust data flows with Combine and reactive frameworks. I'm comfortable in Agile environments and have experience from idea to App Store release.…Hi, I’m Olga Covaliova, an iOS developer passionate about building scalable, product-oriented apps. I specialize in SwiftUI, UIKit, MVVM, and Clean Architecture, and I’m committed to writing maintainable, testable code that ships features users love. I enjoy collaborating with cross-functional teams to tackle architectural challenges, integrate REST APIs, and implement robust data flows with Combine and reactive frameworks. I'm comfortable in Agile environments and have experience from idea to App Store release.

OLGA COVALIOVA

App Developer, Front-End Developer, Web Developer, +5

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Hi, I’m Olga Covaliova, an iOS developer passionate about building scalable, product-oriented apps. I specialize in SwiftUI, UIKit, MVVM, and Clean Architecture, and I’m committed to writing maintainable, testable code that ships features users love. I enjoy collaborating with cross-functional teams to tackle architectural challenges, integrate REST APIs, and implement robust data flows with Combine and reactive frameworks. I'm comfortable in Agile environments and have experience from idea to App Store release.…Hi, I’m Olga Covaliova, an iOS developer passionate about building scalable, product-oriented apps. I specialize in SwiftUI, UIKit, MVVM, and Clean Architecture, and I’m committed to writing maintainable, testable code that ships features users love. I enjoy collaborating with cross-functional teams to tackle architectural challenges, integrate REST APIs, and implement robust data flows with Combine and reactive frameworks. I'm comfortable in Agile environments and have experience from idea to App Store release.

Available to hire

Hi, I’m Olga Covaliova, an iOS developer passionate about building scalable, product-oriented apps. I specialize in SwiftUI, UIKit, MVVM, and Clean Architecture, and I’m committed to writing maintainable, testable code that ships features users love.

I enjoy collaborating with cross-functional teams to tackle architectural challenges, integrate REST APIs, and implement robust data flows with Combine and reactive frameworks. I’m comfortable in Agile environments and have experience from idea to App Store release.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Spanish; Castilian

Beginner

Russian

Fluent

Work Experience

iOS/MacOS Developer at Self Employed

November 1, 2023 - Present

Designed and developed a fully functional shopping list app, My Shoppio, for iOS and iPad using UIKit with programmatic UI and MVVM architecture. Implemented RxSwift for data binding and built dynamic table views using RxDataSources. Ensured smooth, responsive UI and proper memory management. Published the app independently on the App Store with full compliance and metadata. Developed a MacOS Time Tracker app from scratch using SwiftUI. Integrated Core Data for efficient local storage and offline functionality. Applied best coding practices including SOLID principles and dependency injection. Used GitHub for version control and practiced Agile development with Jira.

iOS Developer Student at FoxmindEd

November 1, 2023 - Present

Developed and launched multiple iOS applications using UIKit, SwiftUI, Cocoa, XCTest, and RxSwift. Managed data consumption from various APIs, applied CI/CD practices using Gitlab, and mentored team members. Enhanced existing Objective-C libraries.

Frontend Developer at Freelance

November 1, 2023 - July 30, 2025

Developed responsive and dynamic user interfaces using React.js, JavaScript, and HTML/CSS, ensuring cross-browser compatibility and performance optimization. Implemented component-based architecture and managed application state using React hooks and Context API. Integrated RESTful APIs and handled asynchronous dataflows.

iOS/MacOS Developer at Self Employed

November 1, 2023 - Present

Developed Time Since (iOS, iPad) lifestyle tracking app using Swift, SwiftUI, MVVM, Swift Data, and Combine; implemented local notifications with scheduling logic for recurring reminders; followed Apple Human Interface Guidelines; authored unit tests. Also contributed to Time Tracker (MacOS) with SwiftUI and Core Data, and My Shoppio (iOS) shopping list using UIKit, MVVM, Core Data, RxSwift/RxCocoa/RxDataSources; used Fastlane for deployment and published My Shoppio to the App Store with complete metadata and privacy policy.

iOS Developer at FoxmindEd

July 1, 2025 - September 8, 2025

Developed and launched multiple iOS applications; used UIKit, SwiftUI, Cocoa, XCTest, RxSwift; consumed data from various APIs; CI/CD with GitLab; mentored team members; enhanced an existing Objective-C library.

Frontend Developer at Freelance

November 1, 2023 - September 8, 2025

Built responsive UIs for web using React.js, JavaScript, and HTML/CSS; implemented component-based architecture; managed application state with React hooks and Context API; integrated RESTful APIs and ensured cross-browser performance.

iOS/MacOS Developer (Self-Employed) at Self Employed

November 1, 2023 - Present

Self-employed iOS/MacOS developer. Built and published Time Since (iOS, iPad) and contributed to My Shoppio and Time Tracker App projects. Implemented using SwiftUI, MVVM, and Combine; integrated local notifications; ensured native Apple Human Interface guidelines; wrote unit tests; published apps to the App Store.

Frontend Developer at Freelance

November 1, 2023 - September 8, 2025

Developed responsive and dynamic user interfaces using React.js, JavaScript, and HTML/CSS. Implemented component-based architecture, managed application state with React hooks and Context API; integrated RESTful APIs and ensured cross-browser compatibility and performance optimization.

iOS Developer at FoxmindEd

July 1, 2025 - September 8, 2025

iOS Developer (Intern) at FoxmindEd. Developed and launched multiple iOS applications; leveraged UIKit, SwiftUI, Cocoa, XCTest, RxSwift; consumed and managed data from various APIs; CI/CD with GitLab; mentored team members; Enhanced existing Objective-C libraries.

iOS/MacOS Developer at Self-Employed

November 1, 2023 - Present

Moments Keeper (iOS, iPad) - Lifestyle Tracking App. Implemented using SwiftUI, MVVM, and Combine for reactive UI updates. Integrated local notifications with scheduling logic for event reminders. Followed Apple's Human Interface Guidelines to ensure native feel. Wrote unit tests using the Swift Testing framework.

iOS Developer at Self-Employed

November 1, 2023 - Present

My Shoppio (iOS, iPad) - Fully functional shopping list app built with UIKit, MVVM, Core Data, RxSwift, RxCocoa, RxDataSources. Implemented dynamic table views with RxDataSources and ensured smooth, memory-efficient UI. Published independently to the App Store with complete metadata and privacy policy.

MacOS Developer at Self-Employed

November 1, 2023 - Present

Time Tracker App for macOS - Built with SwiftUI, MVVM, Core Data. Designed and developed a Mac app from scratch, using modern Apple technologies; included XCTest/UI Testing.

iOS Developer (Intern) at FoxmindEd

July 1, 2025 - October 25, 2025

Developed and launched multiple iOS applications; leveraged UIKit, SwiftUI, RxSwift; consumed data from various APIs; CI/CD with GitLab; mentored team members; improved an Objective-C library.

Frontend Developer (Freelance) at Freelance

November 1, 2023 - October 25, 2025

Developed responsive and dynamic user interfaces using React.js, JavaScript and HTML/CSS; implemented component-based architecture, managed application state with React hooks and Context API; integrated RESTful APIs and asynchronous data flows.

iOS/MacOS Developer at Self-employed / Freelance

November 1, 2023 - November 14, 2025

Self-employed iOS/macOS developer delivering multiple projects: Moments Keeper (iOS/iPad) using SwiftUI, MVVM, Swift Data; local notifications and event reminders; unit/UI tests; published to App Store. Also led development of My Shoppio (iOS/iPad) with UIKit, MVVM, Core Data and RxSwift/RxCocoa with RxDataSources and publication to App Store. Time Tracker (MacOS) built with SwiftUI, MVVM and Core Data. Applied SOLID, dependency injection, and Agile practices to ensure clean architecture and robust data handling.

iOS Developer Intern at FoxmindEd

July 1, 2025 - July 1, 2025

Developed and launched multiple iOS applications; utilized UIKit, SwiftUI, Cocoa, XCTest, RxSwift; managed data from various APIs; CI/CD with GitLab; mentored teammates; enhanced an existing Objective-C library.

Frontend Developer at Freelance

November 1, 2023 - November 1, 2023

Developed responsive and dynamic user interfaces using React.js, JavaScript and HTML/CSS; implemented component-based architecture and managed application state with React hooks and Context API; integrated RESTful APIs and handled asynchronous data flows.

iOS/MacOS Developer (Moments Keeper) at Self-Employed

November 1, 2023 - November 14, 2025

Implemented Moments Keeper for iOS and iPad using SwiftUI, MVVM, and Combine to create a reactive UI. Integrated local notifications with scheduling logic for recurring event reminders and followed Apple Human Interface Guidelines for a native feel. Wrote unit tests using the Swift Testing framework.

iOS Developer (My Shoppio) at Self-Employed

November 1, 2023 - November 14, 2025

Designed and developed a fully functional shopping list app from scratch using UIKit with programmatic UI. Implemented MVVM, used RxSwift for data binding, built dynamic tables with RxDataSources, and ensured smooth UI with proper memory management. Published independently to the App Store with complete metadata, privacy policy, and screenshots.

MacOS Developer (Time Tracker App) at Self-Employed

November 1, 2023 - November 14, 2025

Designed and developed a MacOS application from scratch using SwiftUI and MVVM, with Core Data integration and XCTest/UI testing to ensure reliability and performance.

iOS Developer (Contract) at COACH-ATHLETE MANAGEMENT SAAS APP

March 1, 2025 - Present

Developed a SwiftUI-based iOS application following MVVM and Clean Architecture. Implemented role-based flows for coaches and athletes, training plan creation and management, and an athlete dashboard for viewing workouts and tracking progress. Integrated REST APIs using Alamofire with token-based authentication, built a networking layer with interceptors and DTO–domain mapping, and used Combine for state management and asynchronous data flows. Collaborated with backend developers to align API contracts, wrote unit tests for ViewModels and business logic, and participated in code reviews and architectural discussions.

iOS Developer (Intern) at FoxmindEd

November 1, 2022 - February 1, 2024

Developed multiple iOS applications using UIKit and SwiftUI; worked with REST APIs and RxSwift; participated in CI/CD pipelines using GitLab; mentored junior students.

Frontend Developer (Freelance) at Freelance

September 1, 2021 - November 1, 2022

Developed responsive user interfaces using React.js, TypeScript, and HTML/CSS; implemented component-based architecture and managed application state with React hooks and Context API; integrated RESTful APIs and handled asynchronous data flows.