Олександр

OLEKSANDR STRELTSOV Flutter Developer | 4 years experience
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ABOUT
Flutter Developer with 4 years of commercial experience building complex business applications for Android, iOS, and
Web. Own the full development cycle—from requirements analysis and architecture planning to release, analytics, and
production support. Experienced in improving application performance across platforms, automating development and
release workflows, building multi-brand platforms, and implementing complex real-time and AI-powered features.
Work independently and in cross-functional teams with product owners, designers, QA engineers, and backend
developers. Translate business requirements into practical technical solutions, identify risks early, and take responsibility
for features through production. Contribute beyond feature development through UX improvements, reusable component
systems, application modularization, API integrations, release infrastructure, code reviews, and knowledge sharing.

SKILLS
Flutter & UI Development: Flutter, Dart, Material Design, Cupertino, Localization
Architecture & State Management: Clean Architecture, MVVM, Dependency Injection, BLoC, Provider, GetIt, Injectable
Networking & Real-Time Communication: REST API, HTTP, WebSocket, WebRTC, LiveKit, Dio, Retrofit
Backend Services & Analytics: Firebase, Appwrite, PostHog
Navigation & Application Lifecycle: go_router, Navigator 2.0, Deep Linking, Push Notifications, Background Tasks, Isolates
Data Storage & Offline Support: Drift, SQLite, Hive, SharedPreferences, Secure Storage, Offline-First, Data Synchronization
Testing & Monitoring: Unit Testing, Widget Testing, Integration Testing, Sentry, Crash Reporting
Native Development: Android, iOS, Kotlin, Java, Swift, Objective-C, Android SDK, iOS SDK, UIKit, SwiftUI
Flutter Web: Flutter Web, PWA, Service Workers

EXPERIENCE
SEWERINOW GMBH & CO. KG: 06/2024 - Present , 2+ YEARS
• Cut CI/CD code-generation time by 94.1%, from 17 minutes to approximately 1 minute, accelerating application updates and
release delivery.
• Reduced the Flutter Web bundle by 14.1% and cut average initial load time by 62.5%, from 8 to 3 seconds, while bringing
repeat loads down to 1–2 seconds and enabling core screens to work offline.
• Automated AI-assisted localization of 7,462 strings across 8 languages, reducing the full translation cycle by 78.6%, from
approximately 7 days to 1–2 days, and enabling non-technical employees to review and publish translations independently.
• Released a 3-stage AI-powered escalation workflow combining push notifications, response-center tasks, and automated VoIP
calls, reducing manual follow-up when users ignored critical events.
• Reworked complex, data-heavy screens and rendering flows, improving interface responsiveness and eliminating visible
freezes during key user workflows.
Technologies: Flutter, Dart, BLoC, GetIt, Injectable, Dio, Retrofit, WebSocket, LiveKit, Firebase, Hive, go_router, PWA, Service
Workers, Codemagic, Clean Architecture, Deep Linking, VoIP, CallKit, Camera, Google Maps, Geolocation.

VISTALT UG / VISTALT INC.: 06/2022 - 06/2024 , 2 YEARS
• Digitized 100% of employee time tracking through a one-tap start/stop workflow, replacing paper timesheets and giving
managers real-time visibility into shifts, breaks, locations, and completed services.
• Integrated reliable background GPS tracking across 2 mobile platforms, preserving location data during network outages and
synchronizing it automatically when connectivity returned, enabling uninterrupted field tracking throughout the working day.
• Implemented 6+ client request and emergency scenarios—including SOS alerts, missed visits, health issues, cancellations, and
rescheduling—and displayed incidents with nearby employees on a live map, allowing dispatchers to begin responding within
seconds.
• Consolidated document handling for 4 major file types—PDF, Word, Excel, and images—into a single digital workflow covering
capture, QR-based routing, search, access control, sharing, and PDF creation and editing.
Technologies: Flutter, Dart, Kotlin, Swift, BLoC, GetIt, Injectable, Dio, Retrofit, WebSocket, Firebase, Drift, SQLite, Hive, Fluro,
Background Location, Offline Data Synchronization, Google Maps, Camera, QR Code Scanning, Document Processing.

INDEPENDENT PROJECTS: 12/2021 - 06/2022 , 7 MONTHS
• Developed Movie Night, a Flutter application with 7+ core flows, including content discovery, trailers, favorites, offline caching,
deep links, and background update notifications.
• Created EcoCity Architects, a cross-platform Flutter and Flame game for Android and iOS with persistent progress, localization,
audio, and backend synchronization.
• Built 3 prototypes covering real-time on-device object detection, an offline English-learning app with a downloadable local LLM,
and custom Dart/OpenGL development.
Technologies: Flutter, Dart, Java, Kotlin, Swift, Firebase, Deep Linking, Background Tasks, Flame, TensorFlow Lite, On-Device LLM,
OpenGL, C++.
 EDUCATION
KHARKIV NATIONAL UNIVERSITY OF RADIO ELECTRONICS - MASTER, 2023 - 2025
Information and Analytical Technologies and Management (Informatics)
KHARKIV NATIONAL UNIVERSITY OF RADIO ELECTRONICS - BACHELOR, 2019 - 2023
Automation and Computer-Integrated Technologies (System Engineering)
Additional training: Flutter BaseCamp by GlobalLogic (2021); Android Course by NIX Solutions (2019)