Олена

OLENA CHETVERYKOVA
Flutter Engineer
[відкрити контакти](див. вище в блоці «контактна інформація») [відкрити контакти](див. вище в блоці «контактна інформація») Linkedin Telegram Kyiv, Ukraine

Summary
Flutter Engineer with 6+ years of experience building scalable, high-performance mobile apps. Built and led a development team from scratch,
mentoring developers and introducing AI-assisted workflows (Cursor, Figma MCP) that sped up delivery by ~25–30%. Strong in project architecture,
BLoC, MVVM, and Firebase, with full-stack Laravel experience that ensures seamless backend integration.

Skills
Mobile: Flutter, Dart, BLoC, Firebase, Drift, Hive, Git, CI/CD

Backend: Laravel, PHP, MySQL, MVC, Composer, SOAP, Vesta, REST API, SMTP, Google Maps API, Git

Frontend: JavaScript, jQuery, Bootstrap, Git

AI: Cursor, Claude Code

Software Design and Architecture: Clean Architecture, SOLID, DRY, KISS, OOP, YAGNI, Antipatterns (Magic numbers, God object, Spaghetti code)

Languages: English (B2, Upper-Intermediate), Ukrainian Native

Experience
N-iX
Flutter Developer 01/2024 - Present
• Designed the database schema for ~15 data models, improving query efficiency and simplifying future feature work
• Contributed to a full app redesign of 20+ screens, implementing UI and business logic in Flutter
• Accelerated screen development by ~30% using Figma MCP to turn designs into production-ready UI
• Built background sync of image-heavy data to remote storage with Dart Isolates, eliminating UI freezes during transfers of thousands of records
• Collaborated on project planning, breaking features into development tasks and estimating timelines

Avidi Technologies
Flutter Developer (Team Lead) 02/2023 - 12/2024
• Built the development team from scratch, conducting 10+ technical interviews and hiring 2 developers
• Led and mentored the team, supporting developers’ professional growth and helping 2 juniors reach mid-level
• Introduced AI-assisted development (Cursor) into the team workflow, speeding up feature delivery by ~25%
• Conducted code reviews, reducing bugs reaching QA by ~30% and keeping the codebase consistent
• Analyzed project scope and estimated effort, helping the team meet ~90% of sprint commitments

LITSLINK
Flutter Developer 05/2021 - 01/2023
• Implemented API integration logic for 30+ endpoints, handling data mapping, errors, and loading states
• Analyzed requirements and estimated effort to support accurate sprint planning
• Integrated deep links, localization for 3 languages, and WebView to extend app functionality
• Built a complex multi-step form with Reactive Forms and custom animations, delivering real-time validation and a smooth user experience
• Established a shared component library in Widgetbook (40+ widgets, fully tested), reducing duplicate code and speeding up UI work

U-CHARGED
Fullstack Engineer 03/2020 - 05/2021
• Delivered features end-to-end as a full-stack developer, building the Flutter mobile app and the Laravel backend
• Designed and implemented a REST API in Laravel with 25+ endpoints powering the mobile client
• Improved UX across key user flows, reducing the steps needed to complete core actions by ~20%
• Implemented Google Maps integration, an event calendar, local data caching for faster load times, and fingerprint authentication
• Handled supporting frontend tasks in JavaScript to keep web and mobile features aligned

EDUCATION
Kyiv International University: Master's degree of International Economic Relations 2009 - 2014