Ivan

Ivan Chernukhin Profile

Android Engineer with 5+ years of experience building
ANDROID ENGINEER scalable fintech and POS products. Strong expertise in Kotlin,
Jetpack Compose, Clean Architecture, and multi-module
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architecture design. Experienced in secure card provisioning,
[открыть контакты](см. выше в блоке «контактная информация») payment tokenization, and production-grade financial
systems. Focused on designing maintainable domain-driven
Kyiv Ukraine
architectures and long-term product scalability.
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Employment History
Software Engineer, DashDevs LLC
Education 03/2024 – 02/2026
Designed and maintained multi-module fintech
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Master's Degree in Computer Science, architecture following Clean Architecture principles.
State University of Information and Implemented Google Pay, Click to Pay, Marqeta, and
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Communication Technologies PayCore integrations including tokenization and secure
10/2022 – 02/2024 provisioning.
The description of the education Built secure networking layer using Retrofit and OkHttp
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with token refresh strategies and interceptor-based
Bachelor's Degree in Mathematics architecture.
and Statistics, National Technical Implemented dependency injection using Hilt (Dagger-
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University of Ukraine "Kyiv Polytechnic based).
Institute" Used Coroutines, Flow, and StateFlow for reactive state
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09/2018 – 07/2022 management.
Implemented background processing and scheduled tasks
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using WorkManager.
Applied Android Keystore and EncryptedSharedPreferences
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for secure local storage.
Contributed to architectural decisions, domain modeling,
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and technical planning.

Middle Android Developer, Renedes
04/2023 – 03/2024
Developed mobile application using MVVM and Dagger
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dependency injection.
Integrated GraphQL APIs using Apollo Client.
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Implemented offline-first approach with Room caching.
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Applied reactive UI updates using LiveData and Flow.
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Optimized rendering performance and background data
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loading.

Middle Android Developer, HS-SOFT
08/2021 – 07/2022
Developed POS applications with hardware integrations
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(printing, barcode scanning, fiscalization).
Refactored legacy architecture to MVVM with Koin
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dependency injection.
Implemented Room-based transaction caching and offline-
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first mechanisms.
Skills Used Coroutines and Flow for asynchronous transaction
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handling.
Kotlin Integrated REST APIs using Retrofit and Gson.
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Implemented Services and BroadcastReceivers for hardware
Java
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event handling.
Jetpack Compose
Junior Android Developer, Crave Tech
XML 07/2020 – 07/2021
Clean Architecture Developed a modular e-commerce Android application with
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Kotlin and MVVM architecture.
MVVM Integrated Firebase Cloud Messaging and deep linking.
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Implemented custom UI components to match complex
MVI
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Figma designs.
Multi-module architecture Worked closely with backend and QA teams in a fast-paced
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Agile environment.
Hilt Delivered fully functional MVP within strict deadlines.
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Dagger
Languages
Koin

Coroutines Ukrainian

Flow English

LiveData

Retrofit

OkHttp

GraphQL (Apollo)
Gson

Room

EncryptedSharedPreferences
WorkManager

Google Pay API

Click to Pay
Google Billing

JUnit

Mockito
Espresso

Firebase

Git
GitHub Actions

Play Console