Viacheslav

Personal information
Name: Viacheslav Khailenko
Phone number: [открыть контакты](см. выше в блоке «контактная информация»)
Date of birth: 27th November 1994
Email: [открыть контакты](см. выше в блоке «контактная информация»)
Telegram: https://t.me/eSlavik
Linkedin: [открыть контакты](см. выше в блоке «контактная информация»)

+2.5 years of commercial experience in Android development. Have a strong
knowledge of Kotlin and Java Core. I have a strong understanding of common
software design patterns (OOP, SOLID) and Android design patterns. I am using a
different stack of technologies in Android development:

Technology Skills

Languages: Java, Kotlin

Tools and Technologies: Android SDK, Android Studio, IntelliJ IDEA

Stack of technologies:
● Multithreading: Kotlin Coroutines, RxJava
● Android Jetpack libraries: Navigation component, Safe args, LiveData,
Paging library, ROOM, ViewModel, WorkManager, DataBinding, etc.)
● Dependency Injection: Dagger 2 (Hilt) / Koin
● MVVM / MVP / MVI
● Jetpack Compose
● Retrofit2
● Databases: SQLite, Room
● Custom View
● Unit tests: JUnit / Robolectric
● Material design
● Glide / Picasso
● Notifications
● Clean Architecture
● Analytics: Datadog / Appsflyer / Google Analytics
● Firebase Services (Cloud Messaging, Remote Config, Firestore, Authentication,
Crahlytics)
● In-app billing (products and subscriptions)
● Google Maps
● BLE

Work experience

1. Apr. 2022 - up to present; — Dayinsure // Project at DIGIS company
Description: Dayinsure has grown to be one of the UK’s leading providers of short term
car insurance.

Responsibilities:
• Designed Android applications using Android widgets like Recycler View, Buttons,
Text Views, Date and Time picker, Range SeekBar, TextInputLayout, Custom View,
etc.
• Developed new features (purchase flow, onboarding flow, profile flow,
etc.) • Collaborated with designers, and backend engineers to build
experiences
• Worked on bug fixing and improving application performance
• Build local unit tests (70% coverage)
• Debugged critical application issues such as crashes, memory leaks
• Refactoring legacy code
• Code Review
• Integration with third-party SDKs (Adyen, Jumio, etc.)
• Integration of new features from scratch
• Worked as part of a team to define and implement solutions

Technology stack: Kotlin, Java (refactoring legacy code to Kotlin), Kotlin Coroutines,
MVVM, WorkManager, Retrofit2, SQLite (Room), Koin, Custom view, JUnit, Android
Jetpack, Jetpack Compose (Profile flow), Material design, Glide, Clean Architecture,
Navigation component & safe args, Notifications, Datagog, Appsflyer, Crashlytics

2. Oct. 2023 - Nov. 2023; — ALmapa / Project at DIGIS company (short-term project,
part-time)

Description: An application for people in Israel, which works similar to AirAlert in
Ukraine, but with wider functionality. ALmapa allows you to easily know where your
loved ones are at any given moment and keep track of them from anywhere. Real-time
alerts according to the area where your loved ones are located. Receive an update
once a family member is in a danger area.

Responsibilities:
• Integrating Google Maps into the project
• Integration of new features from scratch
• Worked as part of a team to define and implement solutions
• For the project, I integrated working with Firestore.
• Created the architecture for this project

Technology stack: Kotlin, MVI, Koin, Android Jetpack Libraries, Material
design, Picasso, Clean Architecture, Firestore
 3. Nov. 2021 - Apr. 2022; — GemLightbox // Project at DIGIS company

Description: World’s first studio-quality smartphone jewelry photography and video
station. The GemLightbox App is created to be used with GemLightbox and allows you
to capture studio-quality images and videos in just one click.

Responsibilities:
• Designed Android applications using Android widgets like Recycler
View, Buttons, Text Views, etc.
• Developed application using components like Activities, Fragments
• Debugged critical application issues such as crashes
• Refactoring legacy code
• Worked with new features (filter operation, image/video editing,
etc)
• Tested new features
• Worked on bug fixing
• BLE

Technology stack: Kotlin, Java, RxJava, MVP, Retrofit2, SQLite (Room), Dagger 2 (Hilt),
Custom view, Android Jetpack, Material design, Picasso, Clean Architecture, BLE

4. Jun. 2021 - Nov. 2021; — RM Toolkit // Project at Andersen Company

Description: MT Toolkit - is a program that allows you to build communication in the
company, schedule meetings for employees, leave goals and comments, add new
employees into the system

Responsibilities:
• Worked on bug fixing
• UI/UX fixing
• Tested new features
• Integration of an Android Navigation Component to the project
Technology stack: Kotlin, Kotlin Coroutines, MVVM, Retrofit2, SQLite (Room), Koin,
Android Jetpack, Material design, Glide.

Education
1. 2014-2016
Bachelor of Science - Enterprise Economics
Odessa National Academy of Food Technologies
2. 2011-2014
Specialist of Science - Enterprise Economics
Odessa College of Computer Technologies Honours degree.

Qualifications
1. May 2021; Andersen — Android Courses
2. October 2017; Personal Search Engine Optimization Certificate by Uprofs
3. September 2017; Google Analytics Individual Qualification
4. December 2014 — July 2015; Internet Marketing courses at the “IT STEP” School,
Odesa, Ukraine
5. HTML & CSS by htmlacademy

Languages
1. English – Upper-Intermediate
2. Ukrainian – Native