Yaroslav V.
Private message 
Offer work 
Kyiv,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
Русский: advanced
English: upper-intermediate
CV
Passionate and highly effective Developer successful at building Android applications. Well-educated and poised with 7 years of expertise. Focused and driven with strengths in coding and bug resolution. Experience delivering top-notch, well-developed apps that provide service to first responders.
Skills
Programming languages: Java, Kotlin
Android
Toolkit: Android Studio, Android SDK, Android
SDK Platform Tools
App integration tools: Facebook, Google, Apple,
and others. FCM, OneSignal, Pusher, socket.io,
and others
Network: Retrofit, Okhttp, Json, WebSockets
Multithreading: Coroutines, Flow, RxJava
Experience with libraries: Glide, Picasso,
ButterKnife, EventBus, Timber, Volley, Fresco,
MPAndroidChart, greenDAO, AndroidX, LiveData,
WorkManager
Additional: HTML, CSS, Jira
Storage: SQLite, Room, Firestore Database,
Realtime database, SharedPreferences, Android
File System, MediaStore, Firebase storage,
Firebase hosting
Crash/product analytics: Firebase Crashlytics,
AppMetrica, Firebase Analytics, AppsFlyer, New
Relic, Google Analytics
UI: Jetpack Compose, Custom layouts, XML
layouts (FrameLayout/LinearLayout
/RelativeLayout/ConstraintLayout /MotionLayout
etc.), Animations, Material
Knowledge of TDD, MVVM, MVP, SOLID, CI, DI,
Clean Architecture, principles and patterns of OOP
programming, algorithms and data structures
DI: Dagger, Koin, Hilt
Version control: Git, Github, Bitbucket
App optimization: Android profiler, Layout
inspector, Firebase Perfomance
Detailed CV by request
Skills and abilities
Programming
Mobile development
Portfolio
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451 USD Intercom Gateway — the only app for your intercom
App Development for Android
Refinement of functionality, integration of UNV Network Device SDK, implementation of the video archive screen.
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Cryptocurrency Tracker
App Development for Android
Approach to track prices and news on cryptocurrencies with a variety of useful features for cryptocurrencies
-
Book Market Plays
App Development for Android
Development and support of application and backend parts
The application functional is a book marketplace with the ability to read and listen to books.
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Senior Android Developer
JavaMaintance and development of mobile application. Maintance of mobile backend.
In-depth work with fbreader, MediaPlayer, billing API. Multi-module project with
Clean Architecture, using MVP pattern. Also libs, that were used in project: room,
navigation, paging and hilt.
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Senior Android Developer
JavaWorked on a project that provides near real-time phone captioning for anyone with
and hearing loss. A multi-module android project that works with custom hardware
using a Clean Architecture approach with MVI + MVVM, RxJava, Dagger, Linphone,
VLC and custom libraries. Git flow, unit tests, CI/CD
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Freelance Marketplace
App Development for Android
Develop and support the Android version of the application for the freelancer marketplace with functionality for both the customer and the freelancer
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Supplement for the purchase and sale of child goods
App Development for Android
The online platform for the purchase and sale of children's goods.
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CRM for Android
App Development for Android
Voice2note is designed for those who perform or receive a lot of calls.After the call is completed, the program will propose to create a voice note.You just need to dictate a note according to your specific template and the program will save the subscriber number, create an event in the calendar, save a note and save the telephone conversation.At any time you will be able to check out with whom you talked, what was going on, listen to the audio recording of the conversation.You no longer need to review the history of the calls and try to remember what they talked to with the subscriber, and who should call or write a letter.No telephone call will be lost and forgotten.Main features of the Voice2Note:
Synchronization of contacts
Automatic adding of contacts
… Tracking of In/Out Calls
Recording the conversation
Creation of Notes
Recognition of language in text
Creating tasks based on text templates
Automatic recording in a calendar with reminders
Journal of Calls
The Task Magazine
The Audio-Note Magazine
A magazine of audio-records
- Sorting notes by date range
- The appearance of the table that is adjusted.Push – Message
Free and Pro versions of the program
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Smoothers for the work table
App Development for Android
Smoothers for the work table
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Catalog of Culinary Recipes
App Development for Android
Catalog of Culinary Recipes
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Mobile client for the movie site
App Development for Android
Mobile client to download movies and series through torrent.
A large catalogue of films and series (more than 10,000) with convenient search and sorting by year, genre and rating. The possibility of viewing the trailer before downloading the torrent file.
The program is designed for both mobile phones and tablets.
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Teaching Program for Children
App Development for Android
Education for children of school age Rules of road traffic. The possibility of passing the tests to check out their results. Optimization on the tablet.
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CPA Profit Checker
App Development for Android
Profit Checker is a useful assistant for arbitraries and webmasters who work with popular CPA rune partners. The program provides the opportunity to conveniently track statistics and balance.
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Bet Simulator for Sport
App Development for Android
Bet Simulator for Sport
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The network of the AWS
App Development for Android
This mobile app provides a wide range of navigation capabilities that allow you to find the nearest car station to your location, create and record routes data, learn fuel prices, and also using the “smart search” feature to find the necessary ACS according to the specified parameters: distance , type of fuel, store availability, cafe, WTO, available payment systems and other additional services.
Reviews and compliments on completed projects 20
4 May
383 USD
Stage No. 3 according to Contract No. 01/2026-BZ
The next stage of the project has been completed, we continue to work.
16 April
370 USD
Stage No. 2 according to Contract No. 01/2026-BZ
Yaroslav clearly works according to the technical specifications. Professional approach.
4 April
390 USD
Stage No. 1 according to Contract No. 01/2026-BZ
Excellent. The approach to work is serious and responsible.
1 June 2025
90 USD
Development of a mobile application
The work was done very quickly, qualitatively, and meets all requirements. I recommend for cooperation!
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20 May 2025
233 USD
Android Studio project
Yaroslav completed a very quick and high-quality job. The result meets expectations. There were very few revisions, and they were also done willingly and quickly.
13 May 2025
80 USD
Rework a simple Android app in Kotlin
Good specialist, quick communication, everything on time, I recommend for cooperation
31 March 2025
226 USD
Finalization of the Brama application archive
Everything was done on time, professionally, and according to the agreements. I recommend for collaboration!
20 March 2025
169 USD
Finalization of the Brama application archive
Everything is done on time, with quality and according to the agreements.
18 March 2025
271 USD
Finalization of the Brama application archive
Everything was done on time, with quality, and according to the agreements.
6 March 2025
361 USD
Integrate SDK into APK Android in Java for video file viewing
Everything is done on time and according to the agreements.
12 December 2023
789 USD
Writing a program
Everything was done as I wanted. I recommend work.
17 November 2023
45 USD
Integration of AppsFlyer Andriod
Everything is done quickly and efficiently. I will call again.
13 November 2023
212 USD
Mobile Android App for Traffic Arbitration
Rapid communication . Work is done at a high level.
10 November 2023
25 USD
25 Dollars
Everything meets the requirements, I recommend cooperation.
10 November 2023
275 USD
Webview for Android - 2
I recommend collaboration, everything meets technical tasks.
9 November 2023
34 USD
Connect InApp subscriptions to the finished application andriod
Everything is done quickly and quality. I recommend
3 November 2023
11 USD
Androids
Specialist, I recommend
1 August 2023
180 USD
Redesign + Creating New Screenshots in the Kotlin App
Excellent work, very remarkable developer, I recommend!
27 July 2023
113 USD
Re-design of Android Java
Everything in time, the developer responds quickly, I recommend!
24 July 2023
129 USD
The Web View
Everything is great! The work is done in time, according to the requirements of the
