Oleksandr O.
Mykolaiv, Ukraine
100%
Job Success
Senior Android Developer (Kotlin, Java, Dart)
$50.00/hr
My purpose is to develop high quality mobile applications with interactive and user-friendly interface, which will satisfy users needs and achieve the highest rating on Google Play
I have 5 years of professional app development of android applications.
I have worked on next type of apps:
- social network apps
- chats
- food apps
- touristics apps
- graphic applications
- mobile vision applications
- custom camera
- IoT apps
- libraries
- chat applications
All apps have included back-end server integration.
The app were developed for inner corporative using.
I'm using next stack of libraries:
- Android Components
- google play services
- google mobile vision
- google ads
- retrofit
- retrolambda
- rxjava
- rxandroid
- rxlocation
- rxcamera
- glide
- picasso
- butterknife
- kotterknife
- circleimageview
I'm building projects with clean code, MVP and VIPER architecture. It allows to build flexible and scalable applications.
Also I have experience with development of back-end servers using spring framework.
I want to bring highest quality solutions for the needs of my customers.
I would like to work with long term customers and projects.
Thanks
My timezone: UTC+2:00
Work history
Android Media App Development
5.00
May 25, 2022
-
Jun 1, 2022
"Alex has been such an asset to our Android team. He has been a rockstar developer. He is a very productive fast learner, and the speed at which he works…
Private earnings
Android Media App Development
5.00
Dec 3, 2021
-
May 25, 2022
Private earnings
Разработка мобильного приложения на Android (отработка улучшений)
5.00
Feb 27, 2020
-
Apr 15, 2022
"This guy really works at a speed of 1 screen per day, taking into account the editing of the bugs! Incredibly!"
Private earnings
Разработка мобильного приложения на Android (отработка улучшений)
5.00
Mar 12, 2020
-
Apr 15, 2022
"Not the first time we work, very high quality at reasonable expenses"
Private earnings
Develop mobile application
5.00
Jan 14, 2020
-
Apr 14, 2022
"Always in touch at the agreed time. Much less bugs in the review phase than most other freelancers. For example, if I double-check for other freelancers 4-5 times, with Alexander…
Private earnings
Develop mobile application
5.00
Jun 8, 2020
-
Apr 14, 2022
"An excellent specialist, high customer focus and sincere desire of the contractor to achieve the result necessary for the business!"
Private earnings
Android Media App Development
5.00
Jun 9, 2021
-
Dec 3, 2021
"Alex is the best Android developer you can get."
Private earnings
Android Media App Development
5.00
Dec 21, 2020
-
Jun 9, 2021
"Alex is one of the best Android developers you could get."
Private earnings
Android Media App Development - Upwork enterprise client
5.00
Sep 10, 2020
-
May 13, 2021
"Alex is one of the best Android developers we have ever worked with. Most importantly, he is very quick and a highly productive developer."
Private earnings
Develop mobile application
5.00
Apr 5, 2018
-
Jun 8, 2020
"Alexander knows how to work with a minimum number of bugs and thinks a lot in advance. This helped us launch the mobile application 2 times faster than we expected!"
Private earnings
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Skills
- Kotlin
- Spring Framework
- SQLite Programming
- SQL