Piotr C.

Android Developer

Top performer 10/10

Poland

Trusted member since 2022

8 years of experience

For the past six years, he has specialized as a native Android apps engineer, developing apps in Kotlin. Piotr has worked on a diverse range of apps featuring video playback and recording, Bluetooth connection, and VoIP capabilities. He led a team that built an app with over 10 million downloads on Google Play.

Piotr uses industry-standard Android libraries such as Kotlin Coroutines, Material Components, Dagger, Koin, Retrofit, Room, SqlDelight, Firebase, LeakCanary, AndroidX, and JUnit.

Main expertise

Android8 years

Kotlin5 years

Material-UI7 years

Retrofit7 years

Experience7

Android Developer

AIDDITIVE INC.•

3D Printing

Mar 2022 - Feb 2023 · 11m

Developed the Android application for the Solve.Care healthcare platform.
Integrated Bluetooth devices for health monitoring.
Rendered a dynamic, server-driven user interface for interacting with healthcare providers.

Writing articles about Android Programming

Articles about programming•

Information Technology (IT) and Services

Nov 2021 · 4y 11m

Wrote articles about Android programming — primarily focusing on Jetpack Compose — to share knowledge with the community.

Personal projects

Mar 2021 · 5y 7m

Working on personal projects for fun, learning, and experimenting with new approaches to developing Android applications. Technology stack: Jetpack Compose, Material Components, Coroutines, Flow, SqlDelight
Remember the pill: The application helps users who take medicines daily - shows reminders, and allows tracking of whether the medication was accepted or not. https://play.google.com/store/apps/details?id=net.chmielowski.pill
Random choice: Straightforward open-source application with one functionality - the user can enter a few options, and the app will choose using a random generator. Play Store: https://play.google.com/store/apps/details?id=net.chmielowski.randomchoice Github: https://github.com/pchmielowski/RandomChoiceApp

Open source

Android developer

Ready4S Mobile Apps & iBeacons for Business•

Information Technology (IT) and Services

Dec 2018 - Feb 2021 · 2y 2m

Worked on Portable North Pole, a multimedia application targeting children that allowed users to watch personalized, interactive videos.
Led a team of 3 developers responsible for developing the Android applications.
Developed features including video playback and recording, as well as dynamically built, server-driven user interface components.

Android developer

CallPage•

Telecommunications

Apr 2017 - Nov 2018 · 1y 7m

Development of the Android application for managing calls generated by the CallPage system.

Realm

Sentry

Mobile app developer

Pegasystems•

Customer Relationship Management (CRM)

Jan 2017 - Apr 2017 · 3m

Developing the mobile app for the client for the Pega7.

Software Developer and Scrum Master

Ericpol•

Telecommunications

Nov 2014 - Oct 2016 · 1y 11m

Working in Scrum methodology on the Titansim - the framework used to perform load tests on 4G IP Multimedia Subsystem networks.

Engineering excellence

All Android Developers who have applied to Proxify are scored from 0 to 300 on engineering excellence, one of the five parameters we evaluate. This score reflects engineering excellence only, based on interviews, take-home assignments, live coding sessions, and/or on-the-job performance reviews. The curve shows how all evaluated Android Developers are distributed across that range, where our acceptance threshold for this parameter sits, and where Piotr stands.