SD
Ukraine
UTC+02:00 (Europe/Kiev)
Sergey D.
Senior Android developer
Higher Education Computer Science
$82,700$74,400/YEAR
10% discount on yearly basis
All rates are indicative, annual rate includes 10% discount
$6,500/MONTH
$41/HOUR

Expertise

Core technologies

Java 5 years
Kotlin 3 years
Mobile 5 years
SQL 5 years
Android Studio 5 years
Git 5 years

Other technologies

Agile
Scrum

Portfolio Highlights

Keen

Keen is the world’s largest network of talented psychics, providing psychic readings to help you find answers to your most pressing questions about love, relationships, career, and more! With the Keen app, you will also receive a free daily horoscope!

Android developer

- Requirements gathering and analysis - Design designing components of the app - Business logic and GUI development - Communication with customer - Solving design issues - Source code development - Bug fixing

Java
Kotlin
Volley
MVC
Mixpanel
MVVM patterns
Apr `19 – Present
10 months

Positive Black News Network

Positive Black News Network sends a knowledge building notification every Wednesday to help you feel better in your skin no matter what color it is.

Android Project Lead Developer

Requirements gathering and analysis Design designing components of the app Business logic and GUI development Key Contributions: Communication with customer Solving design issues Source code development Bug fixing Distribution to Google Play

Java
Twitter
Volley
Facebook SDK
MVP patterns

Netherlands, Belgium

Shoe shopping mobile application. Shopping for the best shoe store in the Netherlands and Belgium is more fun and easier to Omoda app. Be inspired and shop within no time the best shoes, bags and accessories from over 250 brands.

Android developer

Business logic and GUI development Key Contributions: Solving design issues Source code development Bug fixing

Java
Picasso
Volley
Facebook SDK
MVC

Elvn

Elvn is a communication app with a focus on speed and security. It’s super-fast, simple, secure and free. Elvn seamlessly syncs across all of your devices and can be used on tablets and phones alike. You can send an unlimited amount of messages, documents of any type (.doc, .zip, .pdf, etc.), voice memos, images and videos. Elvn groups do not have any limits.

Android Project Lead Developer

Requirements gathering and analysis Design designing components of the app Business logic and GUI development Key Contributions: Communication with customer Solving design issues Solving issues with Actor-core platform Adding bitcoin and platincoin currencies to messenger with possibility to send it between users Working with bitcoin SPV-node Source code development Bug fixing Distribution to Google Play

Bitcoin
Java
Retrofit 2
WebSockets
ZXing framework
MVVM patterns

About me

- 5 years of application development and programming experience. - 4 years of commercial Android application development. - Experience in major programming languages, databases, operating hardware and software. - Experience of object-oriented analysis and design. - Solid mathematical background. - Gathering requirements, estimating tasks and projects.

Highly skilled digital agency agency #206

100-400
San Francisco/USA, Kharkiv/Ukraine
GMT+2
Core Expertise
Ajax
Android SDK
AngularJS
AWS
C#
CakePHP
Java
JavaScript
Kotlin
MongoDB
MySQL
.NET
Node.js
Objective-C
React Native
SQL
Symfony
TypeScript
XML
Zend
CSS3
HTML
Laravel Framework
Swift
Adobe After Effects
Adobe Photoshop
Illustration
Angular 2x
Yii PHP Framework
Angular 4
.NET Core
Industries
Education & Science, Business & Productivity, E-Commerce & Retail, Banking & Finance, Information services & Technologies, Advertising & Marketing, Fashion & Style, Healthcare & Medicine, Booking & Rent, Electronics & Equipment, Audio & Music, Films & TV
Our advantages are: • Easy and comfortable communication which is the basis for successful collaboration • Mature project management for getting apps done • Business analysis and strong elaboration requirements for making decent apps • Strong technology competency for doing apps solid • UX & UI design for making apps brilliant • Testing and quality assurance for doing apps excellent