Сергій

Serhii Polishchuk
Middle Android Engineer (Java/Kotlin/Jetpack)

Location: Rivne, Ukraine
Contacts: Mobile: [відкрити контакти](див. вище в блоці «контактна інформація»);
Email: [відкрити контакти](див. вище в блоці «контактна інформація»); Skype: sp_drow; Telegram: sp_drow;
LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)
Bitbucket: https://bitbucket.org/-PoSoH-/

Skills:
Language: Kotlin/Java There is also experience in using: C#, C++, Dart,
Java Script.
API, SDK: Android SDK, OkHttp, Retrofit, Gson, Stripe, REST API (XML,
JSON, SOAP), Kotlin coroutines, Kotlin Jet Pack Compose, Gradle, Server
Driven UI, Socket, Fltter, Social (Facebook, Google), MVP, Dagger 2,
Hilt, MVVM, Apollo GraphQL, Databinding, Firebase, Firebase
crashlytics, butterknife, picasso, glide, Google Play Services (Google
Maps, android maps utils, ads), Media Recorder and Media Player, Git
(GitLab, GitHub, Bitbucked), zxing, Backendless, OneSignal
Database/ORM: Room, Realm, SqLite, SugarORM
IDE: Android Studio, IntelliJ IDEA, Eclipse, Unity 3D
Other: SCRUM, Linux (Ubuntu, Mint), Windows, Figma, Jira, Postman, MAC,
Xamarin, Inkscape, Trello, AppsFlyer, CI/CD, Unit tests, Mockito,
SOLID, Clean Architecture

Experience:
MARKETPLACE DEVELOPMENT LLC (Auto.ria). Middle Android developer.
July 2022 – August 2024
Responsibilities:
• Support of existing functions of the Auto.ria application
• Participated in the preliminary and final planning of new functions,
estimated the deadlines
• Implemented new functionality to improve the application
• Performed the task of creating and connecting new modules
• Performed connection and configuration of new APIs, as well as removal
of old APIs
• Working with the Apollo GraphQL client
• Maintaining "code cleanliness" and participating in code reviews
• Participated in setting up application modules for different color
schemes
Used: Java, Kotlin, OkHttp, Retrofit, Json, Dagger 2, MVVM, MVP, Data
Binding, Kotlin coroutines, Jet Pack Compose, Apollo GraphQL, Push
notification (Firebase), Web Sockets, Google maps, GPS, Picasso, Server
Driven UI, Media Recorder and Media Player, Unit-test, etc.

United Space. Middle Android developer. November 2021 – June 2022
Responsibilities:
• Worked on supporting applications: «PDF Reader», «File Reader office»,
«Photo&Video Recovery», «PDF Pro Scanner»
• Worked on the creation of applications «Marketplace», «Selfie Camera»
• Participated in sprint planning and assessment of new tasks
 Used: Java, Kotlin, OkHttp, Retrofit, Gson and Moshi, Dagger 2, Koin,
MVVM, MVP, Kotlin coroutines, Jet Pack Compose, Picasso, Coil, Camera 2,
PDF Viewer, Unit-test, etc.

Investors in Ideas Ltd. Middle Android developer.
Mart 2020 – November 2021
Responsibilities: Create and support for android applications. This are
aplications for «Sumra Marketplace», «Sumra Wallet», «Sumra
Product/Gift cards», «Sumra Chat» and «Sumra Meet» for one «Sumra»
ecosystem. The payment was carried out using inner currency accounts
based on the blockchain. Development from make technical specifications
to publication in Google play
Used: Java, Kotlin, Flutter, OkHttp, Retrofit, Gson and Moshi, Dagger 2,
MVVM, MVP, Kotlin coroutines, Jet Pack Compose, Picasso, Flutter, BloC,
Get It, Dio, Equatable, Talker, Auto-route, Firebase Json Annotation,
Json Serializable, Auto route generator, Build runner, Unit-test, etc.

PJSC "Rivneazot" OSTCHEM. Developer. October 2019 - Mart 2020
Responsibilities: Configure the application configuration. Optimization of
data processing

Yellbee. Middle Android developer. June 2018 – June 2019
Responsibilities: Create android apps for planning and booking
recreation with a reminder. Scheduling the development process
according to the Scrum methodology.Publishing the application to Google
Play for the betatestings.

Ploose tech. Middle Android developer. Februar 2015 – Mart 2018
Responsibilities: Application development for small and medium businesses.
Full applications development from technical specifications to
publication.

Event Soft. Junior Android developer. May 2014 – Februar 2015
Responsibilities: Developing inventory management app for middle business.
Platform for publishing newspaper articles. The app was compiled for
more than 100 newspaper brands separately (Support application Rumble
2).

Education:
2019: Rivne Center of Vocational Education. Specialization: Unity 3D
2015-2018: STEP Computer Academy. Specialization: Software development.
2004-2005: National University of Water and Environmental Engineering.
Specialist: Lifting and transport, road, construction, melioration
machines and equipment.
Specialization: Technical service of machines and equipment.
2000-2004: National University of Water and Environmental Engineering.
Bachelor: Engineering Mechanics.

Additionally:
Languages: Ukrainian (native), Russian (good),
English (pre intermediate)