
Biruk Tsegaye
Senior Mobile Developer | Flutter & Android
Salary / Daily rate
Rotterdam, Netherlands
Freelance
Remote only
Skills
Languages
About me
Intro
Senior Mobile Developer with 6+ years building secure fintech applications using Flutter, Kotlin, and React. Delivered cross-platform apps serving thousands of users, optimized performance by 40%+, and managed full development lifecycles. Specialized in Flutter/native Android development with proven expertise in scalable architecture and seamless API integrations.
Work experience
FINBIT®
May 2021 - Present
5 years 6 months
Netherlands · Hybrid
Senior Mobile Developer
Jan 2022 - Present
4 years 10 months
Netherlands · Hybrid
- Developed secure, cross-platform fintech mobile applications using Flutter, delivering consistent experiences across Android and iOS. - Contributed to native Android development (Kotlin) for critical features requiring platform-specific optimization. - Integrated third-party tools and APIs including Firebase, Twilio, Google SDK, and financial data providers, enhancing app functionality and user experience. - Collaborated with designers to implement scalable, intuitive UI components using Jetpack Compose and Flutter widgets. - Optimized app performance through memory profiling, background service management, and build system tuning (AGP, Gradle). - Actively participated in code reviews, architecture discussions, and cross-team planning to maintain clean code and modular design. - Managed the full development lifecycle from concept to release, contributing to rapid delivery and positive user feedback.
Frontend Engineer (Remote)
May 2021 - Jan 2022
9 months
Remote, OR 97458, USA
- Played a key role in the development of a web portal using React, ensuring seamless integration with back-end systems and third-party APIs for efficient data management and processing. - Collaborated closely with the design team to translate UI/UX designs into fully functional React components, resulting in visually appealing and intuitive user interfaces that enhanced overall user experience and engagement. - Working with React Hooks for state management, effectively handling data flow and ensuring a smooth and consistent user interface across multiple application screens. - Optimized website performance through code refactoring and the use of React performance tools, resulting in significantly improved loading times and overall application responsiveness. - Integrated and consumed RESTful APIs using React's built-in fetch functionality, enabling efficient data retrieval and manipulation for various application features and functionalities. - Successfully developed and launched the current company website, showcasing the company's products and services effectively.
Android Developer
LIFT-BV
Oct 2018 - May 2021
2 years 8 months
Remote, OR 97458, USA
- Designed and developed robust native Android applications using Java and Kotlin, improving user experience and reliability across fintech and business-focused apps. - Built and maintained modular, scalable architectures using MVVM and Clean Architecture patterns, enabling faster development and easier maintenance. - Integrated third-party services (Firebase, REST APIs, Google Maps SDK, Push Notifications) to extend app capabilities and enhance user interaction. - Focused on UI/UX excellence, collaborating with product designers to deliver visually polished and intuitive interfaces using Material Design principles and custom components. - Diagnosed and resolved complex production issues using Android Studio Profiler, Crashlytics, and log analysis, improving stability and reducing crash rates.
Education
Addis Ababa University
Bachelor's degree
2013 - 2018
4 years 11 months