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Hi, I’m Anastasiya-Viktoryia Astashonak, a Senior Mobile Developer specializing in Flutter and Android. I have 5+ years of experience building and scaling mobile applications, with a focus on performance, stability, and production-ready solutions. I enjoy designing clean architectures, optimizing onboarding and localization, and delivering robust mobile experiences across Android and iOS. I thrive in collaborative, cross-functional teams and am passionate about delivering high-quality software that meets user needs and business goals.…Hi, I’m Anastasiya-Viktoryia Astashonak, a Senior Mobile Developer specializing in Flutter and Android. I have 5+ years of experience building and scaling mobile applications, with a focus on performance, stability, and production-ready solutions. I enjoy designing clean architectures, optimizing onboarding and localization, and delivering robust mobile experiences across Android and iOS. I thrive in collaborative, cross-functional teams and am passionate about delivering high-quality software that meets user needs and business goals.

Anastasiya-Viktoryia Astashonak

App Developer, Full Stack Developer, Web Developer, +4

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Hi, I’m Anastasiya-Viktoryia Astashonak, a Senior Mobile Developer specializing in Flutter and Android. I have 5+ years of experience building and scaling mobile applications, with a focus on performance, stability, and production-ready solutions. I enjoy designing clean architectures, optimizing onboarding and localization, and delivering robust mobile experiences across Android and iOS. I thrive in collaborative, cross-functional teams and am passionate about delivering high-quality software that meets user needs and business goals.…Hi, I’m Anastasiya-Viktoryia Astashonak, a Senior Mobile Developer specializing in Flutter and Android. I have 5+ years of experience building and scaling mobile applications, with a focus on performance, stability, and production-ready solutions. I enjoy designing clean architectures, optimizing onboarding and localization, and delivering robust mobile experiences across Android and iOS. I thrive in collaborative, cross-functional teams and am passionate about delivering high-quality software that meets user needs and business goals.

Available to hire

Hi, I’m Anastasiya-Viktoryia Astashonak, a Senior Mobile Developer specializing in Flutter and Android. I have 5+ years of experience building and scaling mobile applications, with a focus on performance, stability, and production-ready solutions.

I enjoy designing clean architectures, optimizing onboarding and localization, and delivering robust mobile experiences across Android and iOS. I thrive in collaborative, cross-functional teams and am passionate about delivering high-quality software that meets user needs and business goals.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Russian

Fluent

English

Advanced

Work Experience

Senior Flutter Developer at City Explorer

February 1, 2026 - Present

Maintained and stabilized a production Flutter application across Android and iOS, resolving performance bottlenecks, memory leaks, and UI inconsistencies. Implemented enhancements to onboarding, localization, and video streaming flows to maintain smooth user experience. Coordinated with cross-functional teams to monitor quality, handle crash reports, and ensure compliance with app store guidelines. Assisted in publishing updates to Google Play Store and Apple App Store, managing versioning and release notes.

Senior Android Developer at Pasha Bank

October 1, 2025 - Present

Designed and implemented new Android features using MVVM and Clean Architecture. Implemented unit and UI tests and improved code reliability. Contributed to sprint planning and technical estimations, improving delivery predictability. Reduced crash rate and ANR occurrences via stability hardening, improved error handling, and crash analytics monitoring.

Lead Flutter Developer at Gybry

October 1, 2025 - March 1, 2026

Took over a sports achievement tracking app for children, adults, and club owners as sole developer, aligning roadmap and processes directly with the founder. Updated and adjusted UI/UX across the app, implementing vibrant animations using Lottie and Confetti for engaging user experience. Owned release pipeline and store publishing for Google Play and App Store. Stabilized third-party integrations and resolved package conflicts. Established testing practices using Flutter test, ensuring reliability across core features.

Flutter Developer at Unicapital

October 1, 2024 - September 1, 2025

Developed new features and reusable components for an investment mobile application. Diagnosed and resolved software defects and performance bottlenecks. Performed code reviews and contributed to Agile delivery process improvements. Improved application stability and runtime efficiency.

Flutter Developer at Frame Media

October 1, 2023 - September 1, 2024

Built cross-platform video streaming application (Android, iOS, Android TV, Apple TV). Designed scalable architecture for TV platforms. Reduced application size via asset and dependency optimization. Expanded automated test coverage across unit, widget, and UI layers. Established clearer code review guidelines within the team.

Android & Flutter Developer at Bank CenterCredit

March 1, 2021 - October 1, 2023

Led gradual migration of the mobile application from native Android to Flutter, establishing cross- platform architecture and shared codebase. Delivered new product features improving user experience and application capabilities. Fixed defects and troubleshooted production issues to maintain application stability. Refactored legacy modules to improve readability, scalability, and maintainability. Applied Android security best practices. Collaborated with cross-functional team members to align on priorities and delivery timelines.