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Oleksandr – Android, Java, Kotlin, experts in Lemon.io

Oleksandr

From Ukraine (GMT+2)

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Mobile DeveloperSenior
Hire developer
8 years of commercial experience
Cybersecurity
Healthcare
IoT
Logistics
Transportation
Mobile apps
Platforms
Lemon.io stats
3
projects done
522
hours worked
1
offers now 🔥

Oleksandr – Android, Java, Kotlin

Now, that's an Android developer with a unique portfolio! What impressed us the most about Oleksandr was his pleasant demeanor and adaptability. With great English, he can work effectively in both American and European time zones and is comfortable working in teams or independently. Our HR team was thoroughly impressed by his versatility :) To fully leverage Oleksandr's talents, you'll want to hire him for Android and Kotlin Multiplatform projects.

Main technologies
Android
7 years
Java
7 years
Kotlin
7 years
Firebase
7 years
Additional skills
Retrofit
Coroutines
Realm
MVP
Koin
Dagger
BLE
Microsoft Azure
RxJava
JSON
OkHttp
Android Jetpack
WebRTC
Jetpack Compose
Unit testing
CI/CD
Stripe API
Rewards and achievements
Tech interviewer
Client's favourite
June 2024: Dasha Summary
Ready to start
June
Direct hire
Potentially possible

Experience Highlights

Senior Android Developer
May 2023 - Ongoing1 year
Project Overview

End-to-end encrypted file manager.

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Responsibilities:
  • Was responsible for all business-related features, e.g. groups feature (share files within some specific group of users).
Project Tech stack:
Android
Clean Architecture
Data Security
Kotlin
Jetpack Compose
Android Jetpack
Koin
MVVM
CI
CD
GitLab
Android Software Engineer
Jan 2022 - Apr 20231 year 3 months
Project Overview

A national transportation company that connects passengers to affordable and convenient rides. You can request a ride in their app, and a driver from your community will arrive to give you a ride to your destination. Users of the app pay for their rides within the app using their smartphone.

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Responsibilities:

Oleksandr was a part of the Payments team comprising 3 Android developers.

  • Rebuilt the tipping modules - resulting in 10% more user tips
  • Fixed payments-related issues
  • Mentored the newcomers
  • Ran tipping-related experimentations
  • Adjusted accessibility of UI elements
Project Tech stack:
Android
RxJava
Dagger
Kotlin
Jetpack Compose
MVI
Bazel
Senior/Lead Android Developer
Nov 2020 - Dec 20222 years 1 month
Project Overview

On-demand delivery for businesses. Tech and logistics infrastructure to help enterprises scale delivery.

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Responsibilities:
  • Led a courier delivery app development process
  • Designed and implemented the app architecture (MVI - Redux)
  • Mentored a Junior developer
Project Tech stack:
Android
Kotlin
Java
MVI
Dagger
Kotlin
Unit testing
Analytics (Amplitude)
Firebase
Android Developer
Sep 2019 - Nov 20201 year 1 month
Project Overview

Application for managing IoT devices infrastructure.

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Responsibilities:
  • Was responsible for the entire IoT event system and data transfer.
Project Tech stack:
Android
Koin
Realm
Kotlin
RxJava
BLE
Firebase
Microsoft Azure
Android Developer
Mar 2020 - Jul 20204 months
Project Overview

Mobile application which helps retrace a potential COVID-infected person.

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Responsibilities:
  • Prepared the first PoC for the government client.
Project Tech stack:
Android
Kotlin
Koin
Google&Apple BLE Exposure Notifications module

Education

2019
Information technology
Bachelor's

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