Siyavushkhon Kholmatov
Verified Expert in Engineering
Mobile Developer
Tashkent, Tashkent Province, Uzbekistan
Toptal member since August 4, 2022
Siyavushkhon is an innovative and motivated mobile developer. He's worked as a native Android developer for four years using the Java and Kotlin programming languages. Over the last two years, he's been contributing as a full-stack mobile developer on the Flutter framework. So far, Siyavushkhon has delivered solutions in many different fields, such as media streaming portals, fintech apps, and AI systems on end devices for face identification tasks.
Portfolio
Experience
- REST APIs - 9 years
- Mobile Development - 8 years
- Java - 7 years
- Kotlin - 6 years
- Flutter - 5 years
- Dart - 5 years
- Python - 3 years
- Artificial Intelligence (AI) - 2 years
Preferred Environment
Android Studio, IntelliJ IDEA, Xcode, Android SDK, Flutter, PyTorch, TensorFlow
The most amazing...
...project I've developed is an identity verification app with liveness detection by retrieving passport and ID card data over NFC.
Work Experience
Full-stack Mobile Developer
Multicard
- Developed an iOS and Android mobile app for the cashback card to set up and manage card settings and online banking features for payments.
- Built a custom Native Android Flutter channel for NFC payments using Android HCE core.
- Used camera APIs and an ML kit for face detection on a user identification service.
- Developed a fully customized UI elements view based on the design layouts.
Native Android Developer and Full-stack Flutter Developer
PAYMO Uzbekistan
- Developed a fintech mobile application for payment services with NFC payments using customized Android HCE.
- Built an Android application for a user identification system by detecting human liveness and face recognition over passport/ID card photos retrieved by NFC.
- Created an open-source plugin to utilize a user identification system for local third-party apps (SaaS).
- Migrated active Java Android apps to the Kotlin programing language.
- Participated in the marketplace application as a full-stack mobile developer, building both the iOS and Android apps.
- Created an Android application for an mPOS system to accept payments using a customized mPOS SDK and a Bluetooth channel.
Android Developer
Turon Telecom
- Developed a video streaming app with more than a thousand daily active users.
- Implemented an offline video caching feature on the Android mobile app.
- Migrated the Android app from Java to the Kotlin programming language.
Mobile Developer
Freelance
- Developed a mobile application for a clothes retailer store. The app was used as a loyalty and cashback system for the clients.
- Implemented socket connection management between the back end and mobile clients.
- Built a custom targeting system to inform users about upcoming deals and sales.
Experience
Online Banking on iOS and Android
http://multicard.uzI developed this mobile application as an online banking assistant for making online payments and transactions. I built a custom native Android Flutter channel to implement contactless NFC payments using Android Core and the card vendor SDK.
Fintech Banking Android Application
I developed an Android mobile app in the fintech sphere for making online payments and P2P transactions over the cards. I added a feature of NFC payments using Android HCE core and SDK from a card vendor for contactless payments.
eCommerce Marketplace for iOS and Android
I developed the mobile version app for the first online marketplace in Uzbekistan that connects thousands of users with retailers and manufacturers.
Its functionality includes internet commerce, online payments, personal wallet management, order tracking, product feedback, and targeted push notifications.
User Identification App on Android
I developed an Android application for conducting user identification by detecting human liveness. Face recognition has been implemented according to the original photo retrieved from the passport/ID card by NFC reading.
The application was further used as a SaaS, so I developed an open-source Android plugin for third-party apps to utilize the identification app outside the system.
Streaming Media Service
I developed an Android mobile app for online streaming video and audio using modern techniques. The app was used by more than a thousand people daily for media consumption. I also built the Android TV version of the app.
Later on, the application was partially migrated to the Kotlin programming language.
Education
Ph.D. Degree in Artificial Intelligence
Korea Advanced Institute of Science and Technology (KAIST) - Seoul, South Korea
Master's Degree in Artificial Intelligence
Korea Advanced Institute of Science and Technology (KAIST) - Seoul, South Korea
Bachelor's Degree in Computer Graphics
INHA University - Tashkent, Uzbekistan
Certifications
Kotlin for Java Developers
JetBrains | via Coursera
IT Security: Defense Against the Digital Dark Arts
Google | via Coursera
Android Graphics
Imperial College London | via Coursera
Skills
Libraries/APIs
Sockets, Retrofit 2, REST APIs, Camera API, Camera2 API, RxJava, TensorFlow, PyTorch
Tools
Android Studio, Git, Xcode, Figma, Crashlytics, ExoPlayer, Sentry, Gradle, Android Jetpack
Languages
Java, Kotlin, Dart, Python, SQL, C++
Frameworks
Flutter, Dagger 2, Glide, Material UI, Android SDK, Mockito, KOIN
Paradigms
Object-oriented Programming (OOP), Mobile Development, REST, Model View ViewModel (MVVM), Clean Code, Cross-platform, Asynchronous Programming, Dependency Injection, Unit Testing
Platforms
Android, Firebase, Mobile, Android TV, Music Streaming, iOS, FlutterFlow
Storage
SQLite, JSON, Cache, SQL Injection Protection
Other
APIs, OkHttp, Material Design, API Integration, Push Notifications, Data Structures, Computer Science, Software Development, Software Architecture, Full-stack, Operating Systems, Machine Learning, Deep Learning, Artificial Intelligence (AI), Android POS, Video Streaming, ML Kit, Networks, IP Networks, Data Binding, User Interface (UI), User Experience (UX), Hooks, Web Development, Near-field Communication (NFC), Bluetooth Beacons, 3D, Cellular, 5G, Natural Language Processing (NLP)
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