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$25 USD / hour
Flag of UKRAINE
kyiv, ukraine
$25 USD / hour
It's currently 11:13 AM here
Joined July 23, 2013
1 Recommendation

Sergii V.

@w201

 5.0 (8 reviews)
5.6
5.6
91%
91%
$25 USD / hour
Flag of UKRAINE
kyiv, ukraine
$25 USD / hour
100%
Jobs Completed
100%
On Budget
100%
On Time
22%
Repeat Hire Rate

Software developer with more then 15 years in IT

Senior Android developer/Team Lead of Mobile team. Android: Java/Kotlin, Retrofit, RxJava/Coroutines, Realm/Room. Always in trend of new technologies. Linked in profile: [login to view URL] with confirmed skills
Freelancer Android Developers Ukraine
See all Android Developers in Ukraine

Contact Sergii V. about your job

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Portfolio

1900529
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
1889912
Professional Mobile Wood Converter for iOS. Provide various method of log/timber calculations. Use crypted SQLite database, Swift as main language, Autolayout, JSON for server side communication.
Mobile Wood Converter iOS version
Professional Mobile Wood Converter for iOS. Provide various method of log/timber calculations. Use crypted SQLite database, Swift as main language, Autolayout, JSON for server side communication.
Mobile Wood Converter iOS version
Professional Mobile Wood Converter for iOS. Provide various method of log/timber calculations. Use crypted SQLite database, Swift as main language, Autolayout, JSON for server side communication.
Mobile Wood Converter iOS version
Professional Mobile Wood Converter for iOS. Provide various method of log/timber calculations. Use crypted SQLite database, Swift as main language, Autolayout, JSON for server side communication.
Mobile Wood Converter iOS version
1415916
MMOPS - this is small ERP/Accounting system for utilization company in UK. Basic functions: - download users, drivers, cars, orders, runs & so on from ftp server, parse it and add into local database - User fill information about run and collected trashes. - Check report with view by hazard/non-hazard items & so on - Take signature from client and make finish run - Upload report with all details about run to ftp server.
MMOPS
MMOPS - this is small ERP/Accounting system for utilization company in UK. Basic functions: - download users, drivers, cars, orders, runs & so on from ftp server, parse it and add into local database - User fill information about run and collected trashes. - Check report with view by hazard/non-hazard items & so on - Take signature from client and make finish run - Upload report with all details about run to ftp server.
MMOPS
MMOPS - this is small ERP/Accounting system for utilization company in UK. Basic functions: - download users, drivers, cars, orders, runs & so on from ftp server, parse it and add into local database - User fill information about run and collected trashes. - Check report with view by hazard/non-hazard items & so on - Take signature from client and make finish run - Upload report with all details about run to ftp server.
MMOPS
MMOPS - this is small ERP/Accounting system for utilization company in UK. Basic functions: - download users, drivers, cars, orders, runs & so on from ftp server, parse it and add into local database - User fill information about run and collected trashes. - Check report with view by hazard/non-hazard items & so on - Take signature from client and make finish run - Upload report with all details about run to ftp server.
MMOPS
928573
https://play.google.com/store/apps/details?id=com.waterfalls Simple wallpaper with bubble animation...
Live Wallpaper
1066429
Very huge Woods Converter. A lot of screens, mathematics algorithms and so on. But in same time very interesting too. https://play.google.com/store/apps/details?id=sk.drevari.woods_converter
Mobile Woods Converter
Very huge Woods Converter. A lot of screens, mathematics algorithms and so on. But in same time very interesting too. https://play.google.com/store/apps/details?id=sk.drevari.woods_converter
Mobile Woods Converter
Very huge Woods Converter. A lot of screens, mathematics algorithms and so on. But in same time very interesting too. https://play.google.com/store/apps/details?id=sk.drevari.woods_converter
Mobile Woods Converter
1071979
Taxometer for taxi service with financial functions and statistics. Also I made UI design of this app. A lot of screens and futures - can explain upon request.
Taxometer in vtaxi.info project
Taxometer for taxi service with financial functions and statistics. Also I made UI design of this app. A lot of screens and futures - can explain upon request.
Taxometer in vtaxi.info project
1900529
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
Social network application for organization communication between Municipality and citizenship. - Web administration panel for manage events, voice communication & so on - Android application (event's view, write review, social sharing & so on)
Sarule Municipality - Android
1889912
Professional Mobile Wood Converter for iOS. Provide various method of log/timber calculations. Use crypted SQLite database, Swift as main language, Autolayout, JSON for server side communication.
Mobile Wood Converter iOS version
Professional Mobile Wood Converter for iOS. Provide various method of log/timber calculations. Use crypted SQLite database, Swift as main language, Autolayout, JSON for server side communication.
Mobile Wood Converter iOS version
Professional Mobile Wood Converter for iOS. Provide various method of log/timber calculations. Use crypted SQLite database, Swift as main language, Autolayout, JSON for server side communication.
Mobile Wood Converter iOS version
Professional Mobile Wood Converter for iOS. Provide various method of log/timber calculations. Use crypted SQLite database, Swift as main language, Autolayout, JSON for server side communication.
Mobile Wood Converter iOS version
1415916
MMOPS - this is small ERP/Accounting system for utilization company in UK. Basic functions: - download users, drivers, cars, orders, runs & so on from ftp server, parse it and add into local database - User fill information about run and collected trashes. - Check report with view by hazard/non-hazard items & so on - Take signature from client and make finish run - Upload report with all details about run to ftp server.
MMOPS
MMOPS - this is small ERP/Accounting system for utilization company in UK. Basic functions: - download users, drivers, cars, orders, runs & so on from ftp server, parse it and add into local database - User fill information about run and collected trashes. - Check report with view by hazard/non-hazard items & so on - Take signature from client and make finish run - Upload report with all details about run to ftp server.
MMOPS
MMOPS - this is small ERP/Accounting system for utilization company in UK. Basic functions: - download users, drivers, cars, orders, runs & so on from ftp server, parse it and add into local database - User fill information about run and collected trashes. - Check report with view by hazard/non-hazard items & so on - Take signature from client and make finish run - Upload report with all details about run to ftp server.
MMOPS
MMOPS - this is small ERP/Accounting system for utilization company in UK. Basic functions: - download users, drivers, cars, orders, runs & so on from ftp server, parse it and add into local database - User fill information about run and collected trashes. - Check report with view by hazard/non-hazard items & so on - Take signature from client and make finish run - Upload report with all details about run to ftp server.
MMOPS
928573
https://play.google.com/store/apps/details?id=com.waterfalls Simple wallpaper with bubble animation...
Live Wallpaper
1066429
Very huge Woods Converter. A lot of screens, mathematics algorithms and so on. But in same time very interesting too. https://play.google.com/store/apps/details?id=sk.drevari.woods_converter
Mobile Woods Converter
Very huge Woods Converter. A lot of screens, mathematics algorithms and so on. But in same time very interesting too. https://play.google.com/store/apps/details?id=sk.drevari.woods_converter
Mobile Woods Converter
Very huge Woods Converter. A lot of screens, mathematics algorithms and so on. But in same time very interesting too. https://play.google.com/store/apps/details?id=sk.drevari.woods_converter
Mobile Woods Converter
1071979
Taxometer for taxi service with financial functions and statistics. Also I made UI design of this app. A lot of screens and futures - can explain upon request.
Taxometer in vtaxi.info project
Taxometer for taxi service with financial functions and statistics. Also I made UI design of this app. A lot of screens and futures - can explain upon request.
Taxometer in vtaxi.info project

Reviews

Changes saved
Showing 1 - 5 out of 8 reviews
Filter reviews by:
5.0
$250.00 USD
Simple Mobile App with 3-4 Screens
Great work! Prompt responses and highly professional and always online/available.
Mobile App Development
Android
M
Flag of Ruben L.
@mindfunction
•
9 years ago
5.0
$111.00 USD
Port 65 lines of Javascript code to Android
Very impressed, he was able to deliver this project within hours of being assigned it. Excellent developer.
Java
JavaScript
Mobile App Development
Android
User Avatar
Flag of Fiach R.
@fiach
•
9 years ago
5.0
£2,777.00 GBP
Convert a C# Windows Mobile application to Java Android
First time on Freelancer and couldn't be more satisfied. He has very good communication skills and a great attitude. Went far beyond what we expected of him. Will definitely use him again.
Java
Mobile App Development
Android
C# Programming
J
Flag of Jeremi R.
@Jerir90
•
10 years ago
5.0
$250.00 USD
Write an Android application
Gave him some work done by previous developers, and he could understand our pain. He went into the code and rectified the issues with perfection. We are using him again
Mobile App Development
Android
P
Closed User
@popds
•
10 years ago
5.0
$117.00 USD
Add some features/changes to my app
Great work
Android
User Avatar
Flag of Bogdan I.
@VelDev
•
10 years ago

Experience

Project manager and lead programmer of IT Projects

nTray
May 2009 - Jul 2014 (5 years, 2 months)
• Eclipse JAVA/Android/SQLite/CVS: Full cycle development of several projects (Snyer BestPrice). Software and hardware architect design of mobile platform of carDVD multimedia system. • C/C++: Control of outsource code of embedded controller for can-bus adapter. Make changes for China market client. • Delphi: Full cycle development of software for convert data from HTML to SQLite database. • SQLite: Develop database structure for all software projects for Android. • PCAD: Control of outsource hardware

Architect and Application Developer

Inlan, Kyiv, Ukraine
May 2004 - May 2009 (5 years)
• C/C++: Develop and coding client software for work in Diebold, Wincor and NCR ATM and NDC+ protocol. Manage and QA control of outsource programmers of video surveillance for ATMs for Linux. • Java: Develop and coding video surveillance (internal 2.0 version). • VisualAge for Smalltalk: Develop and coding video surveillance for ATMs for Windows XP. Develop and coding NDC+ protocol encryption software. • Project Manager: Searching and negotiating of hardware supplier (China) for our projects. Definition

System Administrator

MTS, Kyiv, Ukraine
Sep 2003 - Sep 2004 (1 year)
• Oracle: Manage and analyses Oracle database. Administrate, perform and develop SQL scripts and stored procedures. Develop database structure for BSCS monitoring system. • Linux/PHP/BASH: Develop and coding scripts for BSCS monitoring system. • Visio, Excel: Prepare reports for security department.

Education

master

Donec'kij Nacional'nij Tehnicnij Universitet, Ukraine 1996 - 2001
(5 years)

Qualifications

UPMA

UPMA
2002
Certificate of internal auditor of quality management based on the use of international standards ISO 9000 version 2000. Development, implementation and certification of quality system. Internal audit of quality management system.

UPMA Certification

UPMA Certification
2002
Project Management in Software Development (including Rational Unified Process Basics).

Oracle Certification

Oracle Certification
2004
Oracle 9i: DBA Fundamentals 1.

Publications

none

none
none

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Verifications

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Certifications

android_1.png Android Development 1 78%

Top Skills

Android 10
Java 2
iPhone 2
JavaScript 1
C Programming

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