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Kostyantyn B.
Last update: 18 Oct 2018
MIDDLE
Android Engineer with the passion for mobile software development.
Very attentive to details, consistent on his tasks, prefer deeply analyse the code, before starting the development.
All rates are indicative, annual rate includes 20% discount
20% discount on yearly basis
GMT+2 East Europe
Lviv/Ukraine

EXPERIENCE

Industry Experience

Social Media & Communication, Education & Science, Logistics & Transportation, Banking & Finance, Insurance & Risk Management, Business & Productivity

Product Experience

messenger, android application, Android Apps

PORTFOLIO HIGHLIGHTS

Apr `18 – Present

6 months

Messenger app (Telegram analog)

Android Engineer

The project was written before me, so I am making refactoring and bugs fixing, after this some new features will be implemented.

United Kingdom

The app features an instant messenger that enables users to send and receive text messages for free. Users can also share media such as: -Pictures -Short audio & Video files seamlessly The app contains a wide array of very colourful local stickers & catchphrases that promise to enrich your messaging experience.

Technologies Stack:

Android SDK Kotlin Socket.IO Glide GSON Retrofit 2 Facebook SDK Realm Crashlytics

Industry:

Social Media & Communication

Product:

messenger, android application

May `17 – May `18

1 year

Android application for libraries

Android Engineer

Participated in a big project for public and university libraries with a team of 5 Android developers. The project is based on the multi-module architecture for reusing different components in the mobile application and significant tablet application. There were strict git-flow and code review processes.

This project is under NDA

Technologies Stack:

Android SDK Google Analytics Java Kotlin Socket.IO ButterKnife Espresso Glide GSON Retrofit 2 RxJava SQLite Crashlytics

Industry:

Education & Science

Product:

android application

Nov `16 – Feb `18

1 year

Real-time cars tracking Android app

Android Engineer

App allows to track speed of the every car, check driver’s location, check different violations of all drivers, check reports in different periods and other useful features for a business. I got this app with a lot of bugs and bad optimization. I worked with iOS developer to improve it. My goal was to fix all these bugs and to implement new features in the app. I prepared few releases for Google Play.

This project is under NDA

Technologies Stack:

Android SDK Google Maps Google Play ButterKnife Glide GSON Retrofit Crashlytics EventMachine

Industry:

Logistics & Transportation

Product:

android application

Sep `16 – Nov `17

1 year

Mobile banking application

Android Engineer

Mobile banking appl enable international payments in more than 20 currencies, currency exchange, transactions, loans, deposits. Confirmation of payments and support multiple signature schemes for holding companies.

This project is under NDA

Technologies Stack:

Android SDK Java ButterKnife GSON Retrofit EventMachine

Industry:

Banking & Finance

Mar `17 – May `17

2 months

Android application for insurance broker company

Android Engineer

Created app almost from scratch. The server part is unreliable and complicated because of business aspects, so in-app was implemented implicit offline mode. During the whole product lifecycle, there weren't any crashes.

Ukraine

This project is under NDA

Technologies Stack:

Android SDK Java iTextSharp Dagger 2 GSON Retrofit 2 RxJava Crashlytics

Industry:

Insurance & Risk Management

Product:

android application

Sep `16 – Nov `16

2 months

QR/barcode scanner app

Android Engineer

The main idea is to scan a QR code or a barcode from the devices, to get an instruction from the server and in this way to save nature. I fixed different bugs in this app and prepared it for Google Play release.

This project is under NDA

Technologies Stack:

Android SDK Java ButterKnife GSON Retrofit ZXing framework Crashlytics EventMachine

Product:

android application

Aug `16 – Sep `16

1 month

Mobile application for lawyers

Android Engineer

It was ongoing project and I was responsible for bug fixing, minor features adding.

Application for creating documents. User can send a document via e-mail, change it and save/make a photo for inserting to the document. Also there is a possibility to change background color of the app, size, style or color. Appointed for law and business. I fixed different bugs and refactored really ugly code of the app prototype.

Technologies Stack:

Android SDK Java iTextSharp ButterKnife GSON Retrofit 2 Realm Crashlytics EventMachine

Industry:

Business & Productivity

Product:

Android Apps

EDUCATION

Lviv Polytechnic National University

Computer Engineering

Lviv Polytechnic National University

Computer Engineering

First place at the BEST Hackathon in the category of mobile development, where our team created service for finding mobile devices in the office. We created a mobile application for Android in 24 hours, which interacts with iBeacons and Firebase.

Hackathon in the category of mobile development

I created a simple online music player for Android, which works with last.fm API and with vk.com API

Android Spring Camp

Android Study Jams course organized by Udacity and Google Developer Group Lviv. I created a basic brain training game, which asks user to calculate an answer to various simple arithmetic expressions.

Udacity and Google Developer Group Lviv

Mobile, Web, UI/UX Solutions agency #233

App development and design company specializing in native iOS & Android development and UI/UX solutions with Product Managment in mind. We deliver highest-quality services and solutions on time and help our customers become more efficient and profitable. Since 2014 Perpetio has helped more than 30 companies and startups to explore the mobile market and to make beautiful native apps for iPhone, iPad, Android smartphones, and tablets.

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