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Senior Android engineer with experience delivering and maintaining native Android apps, focusing on end-to-end development, state management (MVVM/MVI), REST API integration, local storage, and thorough unit testing. Strong in Kotlin, Coroutines, and Flow, with a performance, scalability, and UX mindset. Previously led development from scratch and managed a small Android team on a health application, collaborating closely with backend and design teams. Earlier experience includes building and enhancing Android apps for transportation systems and multiple cross-platform/mobile projects using Android Studio, Java, and Kotlin.…Senior Android engineer with experience delivering and maintaining native Android apps, focusing on end-to-end development, state management (MVVM/MVI), REST API integration, local storage, and thorough unit testing. Strong in Kotlin, Coroutines, and Flow, with a performance, scalability, and UX mindset. Previously led development from scratch and managed a small Android team on a health application, collaborating closely with backend and design teams. Earlier experience includes building and enhancing Android apps for transportation systems and multiple cross-platform/mobile projects using Android Studio, Java, and Kotlin.

Cosmin Cirlea

App Developer, Software Engineer, Developer, +1

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Senior Android engineer with experience delivering and maintaining native Android apps, focusing on end-to-end development, state management (MVVM/MVI), REST API integration, local storage, and thorough unit testing. Strong in Kotlin, Coroutines, and Flow, with a performance, scalability, and UX mindset. Previously led development from scratch and managed a small Android team on a health application, collaborating closely with backend and design teams. Earlier experience includes building and enhancing Android apps for transportation systems and multiple cross-platform/mobile projects using Android Studio, Java, and Kotlin.…Senior Android engineer with experience delivering and maintaining native Android apps, focusing on end-to-end development, state management (MVVM/MVI), REST API integration, local storage, and thorough unit testing. Strong in Kotlin, Coroutines, and Flow, with a performance, scalability, and UX mindset. Previously led development from scratch and managed a small Android team on a health application, collaborating closely with backend and design teams. Earlier experience includes building and enhancing Android apps for transportation systems and multiple cross-platform/mobile projects using Android Studio, Java, and Kotlin.

Available to hire

Senior Android engineer with experience delivering and maintaining native Android apps, focusing on end-to-end development, state management (MVVM/MVI), REST API integration, local storage, and thorough unit testing. Strong in Kotlin, Coroutines, and Flow, with a performance, scalability, and UX mindset.

Previously led development from scratch and managed a small Android team on a health application, collaborating closely with backend and design teams. Earlier experience includes building and enhancing Android apps for transportation systems and multiple cross-platform/mobile projects using Android Studio, Java, and Kotlin.

Skills

Experience Level

Expert

Expert

Expert

Expert

Beginner

Language

Romanian, Moldavian, Moldovan

Advanced

English

Advanced

German

Beginner

Work Experience

Senior Android Engineer

November 20, 2024 - Present

Responsible for end-to-end development, maintenance, and feature planning for a native Android application. Implemented UI using Jetpack Compose, managed state with MV(I) architecture, integrated REST APIs, handled local storage, and wrote comprehensive unit tests. Proficient in Kotlin, Coroutines and Flows, and Built with strong focus on performance, scalability, and user experience. Contributed to CI/CD pipelines using TeamCity and AppCenter, and integrated Firebase services for push notifications, analytics, and crashlytics.

Senior Android Engineer at Cosmin Circlea

November 1, 2024 - Present

End-to-end development, maintenance, and feature planning for a native Android application. Implemented UI with Jetpack Compose, managed state using MVVM architecture, integrated REST APIs, handled local storage, and wrote comprehensive unit tests. Proficient in Kotlin, Coroutines, and Flows, using BLE with a focus on performance, scalability, and user experience.

Senior Android Engineer at Rin gier AG

March 25, 2024 - September 30, 2024

Worked from March to October 2024 contributing to the development of the Blick Android application, one of Switzerland's most widely read newspapers. Collaborated with a skilled team of developers and UI/UX designers to ensure timely and on-launch delivery. Used technologies including Android Studio, Kotlin, MVVM, data binding, RxJava/RxAndroid, and REST API integration via Retrofit and OkHttp. Wrote unit tests using Mockk, implemented Clean Architecture in a multi-module setup, applied design patterns, and used Koin dependency injection. Integrated Firebase services (including push notifications, analytics, and crashlytics) and worked on CI/CD pipelines with TeamCity and AppCenter.

Senior Android Engineer at Ringer AG

March 1, 2024 - September 30, 2024

Worked on the Blink Android application from March to October 2024. Collaborated with developers and UI/UX designers to deliver on time and ready for launch. Used Android Studio, Kotlin, MVVM, Data Binding, RxJava/RxAndroid, and REST API integration via Retrofit and OkHttp. Wrote unit tests with Mokk, implemented Clean Architecture in a multi-module setup, applied design patterns, and used Koin for dependency injection. Contributed to CI/CD pipelines and integrated Firebase services for push notifications, analytics, and crash reporting.

Lead Android Engineer at AIGIA Health

April 2, 2021 - March 20, 2023

Led development of a smart health Android application from scratch, establishing robust architecture and managing a team of four Android developers. Coordinated with backend and UI/UX teams for smooth integration and agile progress. Built using Kotlin and Java on MVVM architecture with LiveData and Data Binding. Integrated RESTful APIs via Retrofit and OkHttp with Koin dependency injection. Implemented AWS services including Cognito and Chime for secure auth and communications, and integrated Google/Firebase services including social authentication, push notifications, crash reporting, analytics, and Google Cloud APIs. Delivered features for saving/managing medical data and files, medication reminders, and online/physical consultations with specialty doctors. Implemented dynamic data visualization with charts and seamless integrations with third-party health providers (Fitbit, Withings, Garmin, Google Fit). Documented onboarding process for new Android developers.

Android Engineer at Ness Co.

January 1, 2021 - April 1, 2021

Contributed to development and maintenance of an Android application for smart transportation systems in the UK, designed for dedicated Android devices. Over four months in 2021, improved performance and added features, proactively suggesting optimizations. Used Java, MVVM with LiveData and Data Binding for streamlined UI interactions, and integrated REST APIs via Retrofit and OkHttp.

Mobile Developer at Deven ture

January 1, 2019 - January 1, 2021

Between January 2019 and January 2021, developed a variety of mobile applications using Android Studio (Java) for native Android apps and SDKs, as well as Xamarin for cross-platform development (Xamarin.Android and Xamarin.iOS). Responsibilities included implementing new features, fixing bugs, and collaborating with clients to discuss ongoing development. Notable projects included a Social Media Travel App, White-label Training App, Telecom Rewarding App, Educational App for class scheduling and extracurricular activities for children in Ireland, White-label Temporary Staffing App. Refined mobile development skills while delivering impactful solutions for diverse client requirements.

Mobile Developer at Mobile Developer

January 1, 2019 - January 1, 2021

Developed a variety of mobile applications between January 2019 and January 2021 using Android Studio (Java) for native Android apps and SDKs, plus Xamarin for cross-platform development (including iOS). Implemented new features, fixed bugs, and collaborated with clients on ongoing development. Worked on notable projects including Social Media Travel App, White-label Training App, Telecom Reward App (gamified), Educational App for children in Ireland, White-label Temporary Staffing App, and more.