Open to opportunities

Berkay Ertan

@berkayertan

Android Developer at Fonmap Financial Technologies, developing a production fintech app and a reusable Formatted EditText library.

Turkey

Message

At Fonmap Financial Technologies, I develop and maintain a Kotlin-based fintech Android application used in production. I’ve integrated RESTful APIs and implemented MVVM architecture with Hilt to support maintainable, testable applications.

I also designed and maintained CI/CD pipelines and developed automated tests with JUnit and Espresso. I created a reusable custom Formatted EditText library, published on GitHub and used across the application.

Experience

Work history, roles, and key accomplishments

Current

Android Developer

Current

Fonmap Financial Technologies

Jan 2024 - Present (2 years 9 months)

Developed and maintained a Kotlin-based fintech Android application in production. Integrated RESTful APIs, Retrofit, and Coroutines, and implemented MVVM architecture with Hilt dependency injection.

Kotlin MVVM Hilt Retrofit Coroutines Firebase Crashlytics Firebase App Distribution CI CD Junit Espresso Git GitHub

Android / Frontend Developer

Aqvila Software

Nov 2023 - Jan 2024 (2 months)

Developed and maintained Kotlin-based Android applications for multiple client projects. Integrated Retrofit and Coroutines, applied MVVM architecture with Koin, and built responsive web applications using React.js and TypeScript.

Kotlin MVVM Koin Retrofit Coroutines React TypeScript Junit Espresso

Android Developer

Afinitem Medical

Jul 2023 - Nov 2023 (4 months)

Developed Android application features using Kotlin for healthcare-focused mobile solutions. Integrated Retrofit, Google Maps API, Firebase Cloud Messaging, and payment solutions.

Kotlin Retrofit Google Maps API Firebase Cloud Messaging Payment Integration

Android Developer (Internship)

Evatro Information Technologies

Nov 2022 - Feb 2023 (3 months)

Developed Android application features using Kotlin and Java. Integrated RESTful APIs and third-party libraries, improved stability through bug fixing, and monitored crashes using Firebase Crashlytics.

Kotlin Java REST APIs Firebase Crashlytics Agile Jira

DevOps Engineer (Internship)

Ing Bank

Jan 2022 - Apr 2022 (3 months)

Assisted in software development lifecycle improvement initiatives. Participated in code review and quality assurance processes, and supported deployment and operational workflows.

DevOps Code Review Quality Assurance Deployment