SY
Ukraine
UTC+02:00 (Europe/Kiev)
Sergey Y.
Android Developer with 3 years of dynamic professional experience.
Higher Education Computer Science
$60,500$48,400/YEAR
20% discount on yearly basis
All rates are indicative, annual rate includes 20% discount
$4,500/MONTH
$30/HOUR

Expertise

Core technologies

Java 3 years
Retrofit 3 years
WebRTC 3 years
Realm 3 years
Kotlin 3 years

Other technologies

Android SDK
JIRA
Socket.IO
Git
Gradle
ButterKnife
Dagger 2
RxJava
SQLite
Trello
WebSockets
Realm
Crashlytics
YouTrack
GitLab
Firebase

Portfolio Highlights

Jun `19 – Present
8 months

Coreteka

IT Product Studio, that implements innovations into Logistics, Retail, Automotive and Agriculture Domains. Includes mobile, web and embedded development.

Android Developer

Enhancing app functionality; Implementing new screens according to design; Memory profiling using Android studio memory profiler; Performance enhancement; Database optimization; Providing constant communicating with backend via api; Using MVP architecture; Using multiple app flavours depending on server environment; Participating in overall system architecture .

Android SDK
Bluetooth
Java
Kotlin
Socket.IO
WebRTC
ButterKnife
Dagger 2
Retrofit
RxJava
WebSockets
Sep `17 – May `19
2 years

Satylabs, LLC

Analysing, verifying and documenting requirements Modeling business processes by using BPMN diagrams UAT activities Reporting and analyzing bugs BA, QA Testing

Android Developer

Development of UI and business logic from scratch; Architectural design of mobile application; Writing the application UI and logic (REST API, databases, video streaming, chats and bluetooth devices).

Android SDK
Java
Kotlin
Socket.IO
WebRTC
ButterKnife
Dagger 2
Retrofit
RxJava
WebSockets

About me

Android Developer with 3 years of dynamic professional experience. Has good theoretical knowledge and practical skills in Clean Architecture, Design Patterns, Multithreading and Android Architecture Components. Accomplished in providing full-cycle development of software products including chatting apps with audio and video-calls (using WebSockets and WebRTC) in BLE-devices. Has experience working with REST APIs using Retrofit with OkHttp and RxJava. Integrated Firebase (Cloud Messaging, Analytics, Auth) and implemented CI/CD with GitLab and FabricBeta.

Mobile & Web development agency #200

50-100
Kiev/Ukraine; Irvine, CAL/USA
GMT+2
Core Expertise
Android SDK
HTML5
Java
JavaScript
JIRA
Kotlin
MySQL
.NET
Objective-C
PHP
Python
SQL
UI
UX
Xcode
XML
CSS3
CVS
Git
JSON
Swift
Adobe Creative Suite
Mobile UI Design
Sketch
Angular 2x
Bash
Confluence
CoreData
RESTful API
SQLite
Trello
Realm
InVision
Industries
Logistics & Transportation, E-Commerce & Retail, Advertising & Marketing, Automotive
CoreTeka is a team of highly experienced software developers and marketing experts focused on consulting, development and implementation of innovations in retail industry, transportation and automotive business. CoreTeka is focused on 3 main industry sectors: Transportation, Automotive, Retail but also ready to implement projects of any complexity in other industry sectors. Сlients: KIA Motors, Phillip Morris, Toyota, Chevrolet, Gaztron (LPG Trading), UkrAVTO (Ukraine's largest automobile distributor), Raben Group, Technology stack: - UX / UI Design (Mobile app design, Web design); - Front-End development; - Back-End development; - Mobile App development. Experience in Retail: - Loyalty programs; - Real-time sales analytics; - Mobile applications. Experience in Transportations: - Transport Management Systems (TMS); - Mobile apps for logistics and couriers services; - Ticketing systems, complex logistics projects.