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Middle Android Developer
Tetiana Druhak
Kalush, Ukraine | [open contact info](look above in the "contact info" section) | Telegram | LinkedIn

Professional Summary
Experienced Android Developer with 9+ years of overall engineering experience, including 7+
years dedicated to commercial Android application development. Proficient in modern
architectures (MVI, MVVM) and optimizing performance-critical applications. Adept at
modernizing legacy codebases, working within cross-functional teams, mentoring junior
developers, and delivering high-quality software solutions. Experienced in leveraging AI tools
such as ChatGPT, Gemini, and Claude Code to optimize development workflows and code
quality.

Technical Skills
● Languages: Kotlin, Java
● Architecture & Design: MVVM, MVI, MVP, Clean Architecture, OOP, SOLID
● UI & Frameworks: Jetpack Compose, Android SDK, Android Navigation Components,
Data Binding, Custom views, ExoPlayer, ConstraintLayout
● Asynchronous & DI: Coroutines, Koin, Dagger2, Hilt, Worker
● Networking & Data: REST, GraphQL, Retrofit2, Room Database, Firebase, JSON,
Paging
● APIs & Services: Google services, Google Ads, Google Maps API, Bluetooth Low
Energy (BLE), QR-code integration, Visioglobe, AWS storage, IO socket
● AI & Tools: ChatGPT, Gemini, Claude Code
● Version Control & Tools: Git, GitHub, GitLab, BitBucket, Tortoise, Gradle, familiar with
CI/CD workflows and automated build pipelines

Work Experience
Android Developer | Kapowai

September 2024 – Present | Domain: Fintech
● Developing and maintaining Android applications. Utilizing AI tools (ChatGPT, Gemini,
 Claude Code) to enhance development speed, code review processes, and architectural
planning. Collaborating with the team to deliver high-quality product features.
● Spearheaded the integration of Jetpack Compose into existing legacy codebases to
modernize UI components, and led the development of a new greenfield application built
entirely on Jetpack Compose.

Android Developer | Sweet TV

September 2023 – August 2024 | Domain: Media & Entertainment
● Supported the main project, developed new features, resolved bugs, and performed app
redesigns within a 3-person Android team. Adapted the application across diverse
Android versions(21+), specific devices, and multiple locales.
● Managed extensive video streaming integrations and custom video player functionalities
(including ExoPlayer), ensuring high-quality, uninterrupted media playback and optimizing
video performance.

Android Developer | Expoplatform (EP)

November 2021 – February 2023 | Domain: Event Management
● Engineered an offline-first architecture by pre-fetching and synchronizing backend data
into a local database upon app initialization, ensuring a seamless offline user experience.
● Integrated Visioglobe SDK to deliver interactive, map-based indoor navigation features for
complex event layouts.

Android Developer | bvblogic (now Soloway)

November 2020 – October 2021 | Domain: IT Outsourcing
● Maintained and modernized legacy client and driver applications for a taxi service,
successfully navigating and refactoring complex legacy codebases to improve stability.
Extensively utilized Google Maps SDK for real-time routing, location tracking, and
navigation features.
● Developed a specialized application utilizing a Bluetooth Low Energy (BLE) weight
sensor.
● Created a client-server application for ticket sales and mentored junior developers
through code reviews and architecture development while managing tasks across multiple
teams simultaneously.

Co-Founder & Android Developer | Free-Time

June 2017 – March 2021 | Domain: E-commerce
 ● Planned data structures, developed, and refactored the application for a store platform
startup. Created and redesigned UI for over 50 screens based on Material Design
principles in a 2-person android team.

Android Developer | SpDev

March 2020 – November 2020 | Domain: Social Networking
● Developed a social network application based on professional design specifications within
a team environment.

Android Developer | Shoclef Ukraine

October 2019 – January 2020 | Domain: Social Networking
● Developed social network applications based on professional designs within an Android
team of 3-6 people. Integrated authentication, handled m3u8 video streaming, and
implemented image editing features.

Freelance Android Developer

December 2018 – September 2019 | Domain: Gaming & Sports
● Developed small-scale applications, including a poker game and sports competition
forecasts. Executed application redesigns, created new screens, and integrated external
API data.

Education
Vasyl Stefanyk Precarpathian National University
Bachelor of Computer Science
2013 – 2017

Languages
● Ukrainian: Native
● English: Pre-Intermediate