Особисті дані приховані

Odessa, Ukraine
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Ivan Khan, Middle Android
Developer
Experienced Android Developer with 3+ years in mobile application
development across diverse industries. Skilled in analyzing business
requirements, selecting optimal technologies, and managing multiple
projects simultaneously. Proven track record in implementing innovative
features, improving app reliability and performance, and collaborating with
cross-functional teams to deliver high-quality products. Experienced in code
reviews, task management, and mentoring. Seeking to apply expertise as a
Middle Android Developer to build impactful and scalable mobile solutions.

EMPLOYMENT HISTORY
TECHNICAL SKILLS
Android Developer at Brander Programming languages: Java, Kotlin.
October 2021 — June 2024

During my time at Brander, I have been Architectural approaches: MVP, MVVM,
deeply involved in Android development, Clean Architecture.
contributing to the creation and
UI Frameworks & Tools: Jetpack Compose,
maintenance of innovative mobile
Android Views, Material Design.
applications. I have played a key role in
implementing new features, ensuring the Asynchronous & Reactive programming:
reliability and performance of the apps, and Coroutines, Flow, RxJava2/RxKotlin.
collaborating with cross-functional teams to
deliver high-quality products. Dependency Injection Frameworks: Koin,
Hilt.
Freelance Bluetooth & Connectivity: BLE (Bluetooth
October 2023 — Present
Low Energy), REST API, GraphQL, WebSockets
Worked with demanding clients and unclear
requirements. By asking precise questions Data Storage & Persistence: DataStore,
and clarifying goals, consistently delivered SQLite, Room, Realm.
high-quality, well-received applications.
Firebase products: Cloud Messaging,
Firebase Cloud Functions, Firebase Cloud
Program-Ace Firestore, Firebase Cloud Storage, Firebase
July 2025 — Present Crashlytics, etc.
Developed an application with a highly
Google Services and APIs: Google Maps
complex UI under very tight deadlines.
Despite challenging client requirements, API, Google Geolocation API, Google In-app
delivered the project on time with full Billing API, Google Pay (GPay), Google Play
implementation of all requested features. Console.
EDUCATION Multimedia: ExoPlayer.

Master, Kharkiv National University of Networking & Serialization: Retrofit,
Radioelectronics OkHttp, Ktor, Gson.
September 2019 — January 2024
Image loading: Glide, Coil.

PROJECTS Version control: Git (Github, GitLab)

Applications for controlling BLE devices Bug tracking systems and project
(NDA) management tools: Trello, Jira, Worksection.
Development of applications from scratch
under NDA;
Synchronization of devices with smartphones;
Implementation of UI and application logic;
Command sending and remote firmware
flashing for BLE devices;
Migration of legacy logic into a new
application without technical documentation
or design;
Continuous bug fixing and optimization.

Booking of tours and hotels (NDA)
Implementation of new features;
Full redesign of UI;
Migration from sockets to REST API;
Refactoring and bug fixing.

E-commerce applications (NDA)
Development of online shopping apps from
scratch;
Rework of core functionality and database
layer;
Implementation of scalable architecture;
Continuous maintenance and bug fixing.

Cookbook app (NDA)
Integration of the latest Google Play Billing
library;
Crash fixing and performance improvements.

Auction of agricultural crops (NDA)
Creation of UI from scratch;
Implementation of key business logic;
Support and refactoring of existing codebase;
Bug fixing.

Application with complex UI (NDA)
Development of application with a highly
complex user interface;
Delivery within very strict deadlines;
Close collaboration with stakeholders to
prioritize critical features.