Paul is available for hire
Hire PaulPaul - Daniel Bejan
Verified Expert in Engineering
Full-stack Developer
Düsseldorf, North Rhine-Westphalia, Germany
Toptal member since May 23, 2022
Bio
Daniel is an Android developer with over 7 years of experience using Java and Kotlin. He has worked with well-known companies like Yahoo, Audi, Porsche, and Latch, creating reliable apps that help businesses thrive. He enjoys taking on challenging projects, delivering quality products, and driving growth for his clients.
Portfolio
Yahoo! - Sports
Android, Java, Kotlin, MacBook
Simvelop
Android, Kotlin, Java, Python, JavaScript, Android Automotive, MacBook
Cobalt Sign SRL
Android, Java, Kotlin, Java Security, MacBook
Experience
- Android SDK - 8 years
- Java - 7 years
- Android - 7 years
- Android Studio - 6 years
- Kotlin - 4 years
- Laravel - 3 years
- Gradle - 2 years
- PHP - 2 years
Availability
Full-time
Preferred Environment
MacOS, Android Studio
The most amazing...
...software I've developed is a custom solution to cut screen protectors for phones, currently used by over 100 companies.
Work Experience
Android Developer
2022 - 2024
Yahoo! - Sports
- Redesigned important screens in the app to enhance user experience and flow.
- Improved the tracking of user events to understand better how our users use the app.
- Worked on transitioning the app to Kotlin while improving on testing and refactoring significant parts to make the code more maintainable.
Technologies: Android, Java, Kotlin, MacBook
Android Developer
2020 - 2022
Simvelop
- Developed six utility apps for the next generation cars that run Android Automotive in the infotainment system, including a calendar, email client, and logbook keeping app.
- Mentored four former web developers in Android development.
- Implemented internal tools that communicated with the unique emulators via ADB and helped us mock various car functionalities in a user-friendly interface for non-technical persons.
- Initiated the initial implementation of unit and UI testing and mentored the team in testing strategies leading to over 80% coverage in weeks.
- Implemented a Gradle plugin that hooks into the build system and automatically builds custom-made legal documents with the copyright and license information about the external libraries used in our apps.
Technologies: Android, Kotlin, Java, Python, JavaScript, Android Automotive, MacBook
Android Developer
2020 - 2020
Cobalt Sign SRL
- Helped a Belgian payments Android application implement payments via payment URLs or by scanning QR codes for their customers.
- Integrated flight and hotel suggestions into a traveling app to enable users to save them in their wish list.
- Refined the feature tickets, implemented them, and tested them with automated tests in both apps.
Technologies: Android, Java, Kotlin, Java Security, MacBook
Android and Back-end Developer
2019 - 2020
Armour AFC
- Implemented the Android app, including the back end and admin panel, for a startup that innovates how mobile phone screen protectors are cut from foil patches.
- Designed and architected the whole system, from the idea to the delivery and installation, ensuring the app and the client could use our solution efficiently.
- Set up an onboarding process for over 100 companies that are collaborating with the said startup. Our solution is present in over 200 of their working locations, cutting over 80,000 screen protectors per year using our solution.
Technologies: PHP, JavaScript, Vue, Laravel, Android, Android NDK, Android SDK, MacBook
Experience
Digital Hymnal Church Book
An Android app that is used by people attending the SDARM church to view the church hymns during communal singing.
It is available in three languages—Romanian, German, and Italian—and currently has more than 10,000 downloads. There are also music sheets and backing tracks available for the Romanian version. Since the app meets the users' needs, it hasn't been updated for four years.
It is available in three languages—Romanian, German, and Italian—and currently has more than 10,000 downloads. There are also music sheets and backing tracks available for the Romanian version. Since the app meets the users' needs, it hasn't been updated for four years.
Yahoo Sports App
A sports app for US-based sports fans. I mainly worked on maintaining the app, converting Java code to Kotlin, and converting from a proprietary DI framework to Dagger, while implementing new screens and fixing bugs.
Education
2016 - 2020
Bachelor's Degree in Computer Engineering
Universitatea Politehnica Timisoara - Timisoara, Romania
Certifications
AUGUST 2021 - AUGUST 2024
Associate Android Developer
NOVEMBER 2020 - PRESENT
Oracle Certified Associate
Oracle
Skills
Libraries/APIs
Vue, Java Security
Tools
Android Studio, Git, Android Jetpack, Android NDK, Gradle
Languages
Kotlin, Java, C, Python, JavaScript, PHP, Java 8, XML
Platforms
Android, MacOS, Android Automotive
Frameworks
Laravel, Android SDK
Other
MacBook, Debugging, Calculus, Electronics, Windows 10, Jetpack Compose
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