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Senior iOS Developer and Software Engineer with 18+ years of experience building and maintaining production mobile applications. Native iOS development is my primary focus, with strong history in both Objective-C and modern Swift/SwiftUI, including large-scale migrations and codebase modernization. I enjoy solving complex technical challenges end-to-end: refactoring legacy systems, improving performance and stability, strengthening architecture and maintainability, and delivering reliable App Store releases. I collaborate closely with product, design, QA, and backend teams to ship scalable, maintainable solutions.…Senior iOS Developer and Software Engineer with 18+ years of experience building and maintaining production mobile applications. Native iOS development is my primary focus, with strong history in both Objective-C and modern Swift/SwiftUI, including large-scale migrations and codebase modernization. I enjoy solving complex technical challenges end-to-end: refactoring legacy systems, improving performance and stability, strengthening architecture and maintainability, and delivering reliable App Store releases. I collaborate closely with product, design, QA, and backend teams to ship scalable, maintainable solutions.

George Calugar

Software Engineer, App Developer, Programmer, +1

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Senior iOS Developer and Software Engineer with 18+ years of experience building and maintaining production mobile applications. Native iOS development is my primary focus, with strong history in both Objective-C and modern Swift/SwiftUI, including large-scale migrations and codebase modernization. I enjoy solving complex technical challenges end-to-end: refactoring legacy systems, improving performance and stability, strengthening architecture and maintainability, and delivering reliable App Store releases. I collaborate closely with product, design, QA, and backend teams to ship scalable, maintainable solutions.…Senior iOS Developer and Software Engineer with 18+ years of experience building and maintaining production mobile applications. Native iOS development is my primary focus, with strong history in both Objective-C and modern Swift/SwiftUI, including large-scale migrations and codebase modernization. I enjoy solving complex technical challenges end-to-end: refactoring legacy systems, improving performance and stability, strengthening architecture and maintainability, and delivering reliable App Store releases. I collaborate closely with product, design, QA, and backend teams to ship scalable, maintainable solutions.

Available to hire

Senior iOS Developer and Software Engineer with 18+ years of experience building and maintaining production mobile applications. Native iOS development is my primary focus, with strong history in both Objective-C and modern Swift/SwiftUI, including large-scale migrations and codebase modernization.

I enjoy solving complex technical challenges end-to-end: refactoring legacy systems, improving performance and stability, strengthening architecture and maintainability, and delivering reliable App Store releases. I collaborate closely with product, design, QA, and backend teams to ship scalable, maintainable solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Intermediate

Romanian, Moldavian, Moldovan

Fluent

Work Experience

Mobile Application Developer at Reea

January 1, 2017 - Present

Senior iOS developer delivering native iOS applications from requirements and design through development, testing, and release. Led and mentored small teams (up to three engineers) while owning architecture, implementation, and code reviews. Modernized legacy Objective-C codebases by migrating major components to Swift to improve maintainability, code quality, performance, and long-term scalability. Developed large iPad/enterprise-grade apps with complex data models, local storage, and offline synchronization. Built high-performance multimedia and advanced platform features including custom keyboard extensions, real-time location tracking, and AR experiences. Managed full delivery lifecycle (provisioning, signing, TestFlight/App Store, Fastlane automation, Firebase). Performed profiling and performance optimization using Xcode Instruments and collaborated with product, design, QA, and backend teams.

iOS Developer

January 1, 2012 - December 31, 2016

Transitioned into iOS development while contributing to backend and IoT projects. Built foundational iOS skills with Objective-C and UIKit, using Core Data and REST API integration as preparation for a senior iOS career.

Backend Developer

January 1, 2008 - December 31, 2011

Provided backend support for a music discovery platform (Neogen).

Mobile/Desktop App Developer (Qt)

January 1, 2008 - December 31, 2011

Designed and developed complex GUIs and core application logic using Qt/QML. Built proofs of concept for industrial geospatial mapping (GIS) with advanced rendering and high-performance graphics processing. Developed medical/healthcare systems integrated with medical devices and hardware, focusing on secure data streams, compliance, and stability. Implemented robust offline data persistence for geographic monitoring and tracking. Built additional mobile solutions including online catalogs and sports club management systems.

Web Developer

February 1, 2005 - October 1, 2005

Web development support for music discovery platform Neogen during early employment.