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As a highly experienced Senior Mobile Engineer, I specialize in creating efficient and sophisticated cross-platform applications for both iOS and Android. With a strong foundation in Swift, Objective-C, SwiftUI, and MVVM architecture, I have successfully developed and maintained numerous native applications in collaboration with international partners. My expertise spans a wide range of functionalities, including IoT, health, elevator and intercom communication systems, telecommunication, and residential building access control. As a dedicated freelancer and contractor, I am always eager to bring my strong technical background and passion for crafting exceptional mobile applications to new and exciting projects.…As a highly experienced Senior Mobile Engineer, I specialize in creating efficient and sophisticated cross-platform applications for both iOS and Android. With a strong foundation in Swift, Objective-C, SwiftUI, and MVVM architecture, I have successfully developed and maintained numerous native applications in collaboration with international partners. My expertise spans a wide range of functionalities, including IoT, health, elevator and intercom communication systems, telecommunication, and residential building access control. As a dedicated freelancer and contractor, I am always eager to bring my strong technical background and passion for crafting exceptional mobile applications to new and exciting projects.

Sebastian Jipa

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As a highly experienced Senior Mobile Engineer, I specialize in creating efficient and sophisticated cross-platform applications for both iOS and Android. With a strong foundation in Swift, Objective-C, SwiftUI, and MVVM architecture, I have successfully developed and maintained numerous native applications in collaboration with international partners. My expertise spans a wide range of functionalities, including IoT, health, elevator and intercom communication systems, telecommunication, and residential building access control. As a dedicated freelancer and contractor, I am always eager to bring my strong technical background and passion for crafting exceptional mobile applications to new and exciting projects.…As a highly experienced Senior Mobile Engineer, I specialize in creating efficient and sophisticated cross-platform applications for both iOS and Android. With a strong foundation in Swift, Objective-C, SwiftUI, and MVVM architecture, I have successfully developed and maintained numerous native applications in collaboration with international partners. My expertise spans a wide range of functionalities, including IoT, health, elevator and intercom communication systems, telecommunication, and residential building access control. As a dedicated freelancer and contractor, I am always eager to bring my strong technical background and passion for crafting exceptional mobile applications to new and exciting projects.

Available to hire

As a highly experienced Senior Mobile
Engineer, I specialize in creating efficient
and sophisticated cross-platform
applications for both iOS and Android.
With a strong foundation in Swift,
Objective-C, SwiftUI, and MVVM
architecture, I have successfully
developed and maintained numerous
native applications in collaboration with
international partners. My expertise
spans a wide range of functionalities,
including IoT, health, elevator and
intercom communication systems,
telecommunication, and residential
building access control. As a dedicated
freelancer and contractor, I am always
eager to bring my strong technical
background and passion for crafting
exceptional mobile applications to new
and exciting projects.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Romanian, Moldavian, Moldovan

Fluent

English

Advanced

Work Experience

Senior Mobile Application Developer at Vermeer IT Iași

November 20, 2022 - Present

• Developing and continually improving two mental health apps—a customer app and a provider app—using Flutter, with over 95% of the code shared across iOS and Android for efficient updates and maintenance. • Created a custom Flutter package to connect both apps to the backend, making development faster and more consistent. • Responsible for regular updates and new features to keep the apps reliable and user-friendly.

Senior Mobile Application Developer at PHACTUM Software Engineering GmbH

April 20, 2020 - Present

Developed a comprehensive identification documents scanning and validation application from the ground up, employing Swift and MVVM architecture. Key achievements include using Swift Package Manager; QR code scanning and native camera view via AVFoundation; integration of third-party libraries; robust migration and dependency management using CocoaPods.

Senior iOS Developer at CGM Software Romania

October 20, 2018 - Present

Developed and sustained a health app using Swift; MVVM architecture; UI implemented with Storyboards and XIBs. Achieved code coverage over 85%; managed CocoaPods dependencies; conducted peer code reviews; contributed to quarterly strategy meetings for new features.

Senior Mobile Application Developer at PHACTUM Software GmbH

April 20, 2020 - Present

Developed a comprehensive identification documents scanning and validation application from the ground up, using Swift with MVVM; adopted Swift Package Manager, added QR scanning and native camera views, and integrated with native APIs; enabled smooth migration and robust backend integration.

Senior iOS Developer at IT-Objects

October 1, 2017 - September 1, 2018

Developed and maintained a sophisticated elevator and intercom communication application utilizing Swift programming language and the VIPER architectural pattern. Key achievements include: • Executed UI implementation employing Storyboards and Xib files for a seamless user experience. • Successfully integrated the third-party PortSIP library to enable video calling between the building intercom system and mobile application.