Fırat Cem TOPAL
Android Developer
Istanbul,34
Summary
Results-driven Android Developer with 6 years of experience designing, developing, and managing scalable Kotlin/Java based mobile applications throughout the product lifecycle. Proven ability in integrating secure payment systems, optimizing CI/CD pipelines (Jenkins), and creating thorough technical documentation. Skilled in implementing cutting-edge Android technologies (Jetpack Compose, MVVM/MVI architectures) and creating user-centric solutions focused on User Experience (UX). Passionate about enhancing application performance and collaborating with cross-functional teams to deliver high-quality digital products.
Overview
7
7
years of professional experience
4
4
Certifications
Work History
Expert Android Developer
Turk Telekom A.Ş.
05.2024 - Current
- Enhanced user satisfaction by 20% through improvements in playlist management and offline music functions.
- Integrated Material 3 design principles into the Muud App, enhancing UI consistency and user experience.
- Designed maintainable solutions using Jetpack Compose and Kotlin's coroutines, simplifying complex state management issues and improving developer productivity.
- Integrated and managed third-party SDKs for user acquisition campaigns, ensuring seamless functionality and data flow within the main application.
- Implemented and maintained in-app subscription features using Google Play Billing, contributing to the app's monetization strategy.
Collaborated with cross-functional teams to gather requirements and define project scope
Android Developer
obilet.com
11.2021 - 04.2024
- Developed B2B and B2C Android applications, achieving 10M+ downloads and a 4.8/5 user rating on the Google Play Store.
- Redesigned architecture using Jetpack Libs and implementing MVVM pattern, improving dependency management and code maintainability.
- Developed comprehensive test suites using JUnit, Mockito, and Espresso, achieving 95% code coverage.
- Conducted peer code reviews to uphold best practices in clean architecture and Material Design principles.
- Led the integration of secure payment solutions, including the Masterpass SDK and Bank Pos Payments, ensuring reliable and compliant transaction processing for high-volume B2C/B2C applications.
- Conducted code reviews, ensuring adherence to best practices and improving overall code quality.
- Mentored junior developers, sharing knowledge and fostering a culture of continuous learning.
Mobile Application Developer
Kentkart
09.2020 - 09.2021
- End-to-end carded/cardless payment systems for public transportation have been developed using NFC technology on Android devices.
- Built secure NFC-based public transportation secure payment systems, improving transaction reliability by 30%.
- Optimized app performance using profiling tools, reducing transaction processing times by 25%.
- Delivered seamless user experience through integration of modern Android platform features.
- Developed and maintained mobile applications for public transportation management systems.
Ar-Ge Employee
Itech Otomasyon Ar-Ge Merkezi
01.2019 - 12.2019
- Developed IoT Beacon Asset Tracking solutions, enabling real-time customer traffic tracking and heatmaps for retail.
- Built AGV vehicle tracking and routing Android applications, utilizing Google Maps API, MQTT, and WebSockets for precision routing.
Education
Bachelor Degree - Mechanical Engineering Department
Suleyman Demirel University
10.2021
Skills
Languages: Kotlin, Java, Flutter
Certification
Software Development Mastery Certificate - Ministry of Education 01/2023 - 02/2024
Timeline
Expert Android Developer
Turk Telekom A.Ş.
05.2024 - Current
Android Developer
obilet.com
11.2021 - 04.2024
Mobile Application Developer
Kentkart
09.2020 - 09.2021
Ar-Ge Employee
Itech Otomasyon Ar-Ge Merkezi
01.2019 - 12.2019
Bachelor Degree - Mechanical Engineering Department
Suleyman Demirel University