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Location

Ukraine

Rate

$15  / per hour

Years of experience

5+

About

As a Senior Android Developer with a strong background in mobile application development, I have experience leading projects in telecom, fintech, healthcare, and social media domains. Currently, at TEAM International, I design system architecture and lead the development of a telecom app that allows users to manage mobile carrier accounts, modify subscriptions, and enable data security features. My role includes working with Kotlin, Firebase, and various Android frameworks, while ensuring seamless user experience through esims ordering, issue reporting, and secure authentication. Previously, at NIX, I contributed to high-profile apps, including a privacy shield system that controls app permissions, a Tiktok-like social media platform with AR effects, and a fintech P2P payment system that integrates dynamic themes for customization. My approach to development combines a deep understanding of clean architecture patterns, such as MVVM and MVP, with a focus on delivering efficient and scalable solutions. I have worked with cross-functional teams of varying sizes, from small focused teams to larger groups of 50+ members, always ensuring code quality through development and code reviews. My expertise includes a wide range of tools and technologies, such as RxJava, Dagger, TensorFlow, and AWS services, allowing me to build feature-rich apps with complex backend integrations. Additionally, I enjoy mentoring junior developers and sharing knowledge through technical talks at conferences, staying committed to continuous learning and contributing to the Android development community.

Tech Stack

Android, C++, Git, Java, Jenkins, Kotlin

Experience

  • Designed system architecture and led development for a telecom app at TEAM International, focusing on account management, subscriptions, and security features.
  • Developed and maintained privacy shield app at NIX, allowing users to modify app permissions and access based on selected settings.
  • Led the system architecture and development of a social media app at NIX, integrating AR effects and TensorFlow for video recording and editing.
  • Built a fintech P2P payment system, enabling users to open bank accounts, perform payments, and customize card designs via dynamic themes.
  • Created a healthcare support system, integrating Google Fit to track user activity like steps and running, while delivering a seamless user experience.
  • Developed a taxi app for drivers, including map integration using Google Maps and Here Maps, allowing ride acceptance and activity tracking.
  • Performed code reviews and development for various Android applications, ensuring high-quality, efficient code across multiple projects.

Employment history

Senior Android Developer, TEAM International September 2023 - Present
  • Designed system architecture for a telecom app, enabling users to manage carrier accounts and subscriptions.
  • Developed features for ordering and installing eSIMs, managing device contracts, and enhancing data security.
  • Integrated Firebase services, including Crashlytics, Dynamic Links, and Cloud Messaging, into the app.
  • Conducted code reviews and collaborated with a team of 6 developers to ensure high-quality deliverables.
Android Developer, NIX April 2019 - August 2023
  • Developed a privacy shield app, allowing users to control app permissions, internet access, and capabilities.
  • Led system architecture design and development for a Tiktok-like social media app with AR effects using TensorFlow and OpenGL.
  • Built a fintech P2P payment system, integrating AWS Cognito, GraphQL, and Firebase for secure transactions and dynamic themes.
  • Performed code reviews and collaborated with cross-functional teams to optimize app performance and security.
Senior UX Designer, intive January 2014 - October 2015
  • Led product design from concept to implementation for various mobile platforms, including iOS, Android, and Windows.
  • Collaborated with clients and interdisciplinary teams in the Bay Area and Europe to deliver user-centered designs.
  • Mentored design students through the BLStream (intive) Patronage program, providing guidance and feedback on their projects.
  • Managed the design process, ensuring that all projects adhered to high-quality standards and user experience principles.
Principal Designer, DIGE July 2011 - December 2012
  • Led user interface and web design initiatives, transforming client concepts into fully realized digital products.
  • Served as the primary front-end developer, delivering responsive and high-quality web applications.
  • Collaborated with cross-functional teams to ensure seamless integration of design and functionality in all projects.
  • Drove creative design solutions for a variety of digital products, including web applications, mobile apps, and games.
Web Designer + Front-end Developer, DIGE July 2008 - July 2011
  • Designed websites, social media campaigns, and email marketing for various clients across multiple industries.
  • Expanded into mobile app and game design for iOS, ensuring seamless user experiences across platforms.
  • Collaborated closely with the development team to translate designs into functional, user-friendly code.
  • Created engaging user experiences that contributed to the success of multiple digital marketing and development projects.

Education history

Kharkiv National University of Radioelectronics 2015 - 2020 Master's degree in Computer Science
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