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IVAN KHAN
Middle Android Developer
 [open contact info](look above in the "contact info" section) q LinkedIn q Telegram  Odesa, Ukraine

EXPERIENCE SUMMARY

Trainee - Middle Android Developer Experienced Android Developer with a Master's
degree and over 3 years of software
Brander 10/2021 - 06/2024 Kharkiv, Ukraine
development experience across multiple
An IT outsourcing company specializing in software development, industries. Skilled at analyzing business
technical support, and IT consulting for clients across various requirements, selecting optimal technologies, and
industries. managing multiple projects simultaneously.
• Progressed from Trainee to Mid-Level Developer during my Known for implementing innovative features,
tenure from October 2021 to June 2024, consistently ensuring app performance and reliability, and
expanding technical expertise. collaborating with cross-functional teams to
• Successfully maintained and enhanced a large-scale deliver high-quality mobile applications.
application with 500,000+ active users, ensuring high Experienced in code review, task management,
performance and reliability. and mentoring developers. Looking forward to
• Resolved critical issues and implemented key improvements, contributing as a Middle Android Developer to
optimizing performance and user experience. create impactful solutions for modern mobile
apps.
Freelance Android Developer
Freelance 09/2023 - Present Одеса, Украина SKILLS

Programming Languages & Architectural
EDUCATION Approaches:
Java, Kotlin (including Extension Functions).
Master's Degree, Kharkiv National University of
Radioelectronics MVP, MVVM with UseCase, MVC
Харьковский Национальный Университет Радиоэлектронники
09/2019 - 06/2024 Dependency Injection Frameworks:
Koin, Dagger 2, Hilt

PROJECTS Firebase Products & Google Services and
APIs:
1. Application for Controlling BLE Devices (NDA) Firebase Cloud Messaging, Firebase Cloud
Methodology: Waterfall Functions, Firebase Firestore, Firebase Cloud
• Designed the application architecture, ensuring seamless Storage, Firebase Crashlytics, A/B Testing.
synchronization between the device and phone.
• Developed UI and application logic for user interaction with BLE Google Maps API, Google Geolocation API,
devices. Google In-app Billing API, Google Pay, Google
• Implemented remote flashing features, enabling device updates via the Console.
app.
• Provided ongoing support and maintenance, addressing bugs and Libraries & Frameworks:
optimizing performance. Coroutines, RxJava, Glide, Retrofit, OkHttp,
AndroidX, FirebaseCore, Gson, Room, VLC,
2. Tour and Hotel Booking Application (NDA) Material Design, GraphQL, Jetpack Components,
Flow
Methodology: Scrum
• Solely supported the application while driving major feature Databases:
implementations affecting the entire product.
SQLite, Room, Realm.
• Led the transition from socket-based communication to RESTful API
integration.
• Implemented A/B testing for key features and analyzed performance
metrics.
• Conducted bug fixing, optimized the app's performance, and resolved
issues with the Play Store deployment.
PROJECTS

3. Online Shopping Applications (NDA)
Methodology: Scrum
• Focused primarily on bug fixing and adding smaller features to enhance
the user experience.
• Worked on the app’s database, optimizing interactions and functionality
to improve the overall performance.
• Delivered timely fixes to ensure a seamless shopping experience for
users.

4. Cookbook App (NDA)
Methodology: Scrum
• Collaborated on developing the app from scratch, establishing the
architecture and ensuring scalability.
• Focused on implementing the latest version of in-app billing and
resolving crashes and bugs for improved stability.
• Provided support and enhancement of existing features, ensuring
smooth operation of the app.

5. AI Integration Project (NDA)
Methodology: Waterfall
• Led the end-to-end development of an AI-based solution, including
handling audio and video files, generating PDFs, and integrating AI
algorithms.
• Designed and implemented the app’s architecture from scratch,
ensuring high performance and reliability.
• Integrated in-app billing, allowing for monetization and improved user
experience.

6. Smart Health Device Application (NDA)
Methodology: Waterfall
• Developed the entire application from the ground up, utilizing BLE
technology to interface with health monitoring devices.
• Worked autonomously, managing all aspects of the project, from initial
concept through to deployment.
• Addressed the lack of documentation by reverse engineering and
creating functional specifications, ensuring seamless device interaction.

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