Roman O.
Zhitomir, Ukraine
100%
Job Success
Full Stack Developer | CTO
$45.00/hr
Greetings, clear client tasks, agreed deadlines, and my creative professional solutions are the flow to a successfully completed project.
I provide top-quality code that can be maintained and extended, and I have been practicing this since 2003 when computers had low performance 🦕.
That's why code optimization is my best strength.
My expertise:
✓ OOP and system design
✓ Theoretical knowledge and practical experience with design patterns
✓ Asynchronous and multi-threaded development (TPL)
✓ API design, architecture, implementation and integration
✓ Umbraco CMS
✓ .NET / .NET Core C#
✓ XML, XSLT, serialisation/deserialisation (XML, Binary, JSON)
✓ ASP.NET MVC / Web API
✓ ASP. NET Core
✓ SMS integration (Twilio, Plivo, SMSru)
✓ Email integration (SendGrid, MailGun, Gmail, custom SMTP)
✓ WCF and WebServices
✓ Entity Framework, LINQ
✓ Sybase PowerBuilder 7-12
✓ Sybase Adaptive Server Anywhere
✓ Database architecture and optimisation
✓ .NET Desktop (WinForms, WPF)
✓ Telerik, DevExpress, Kendo frameworks for WinForms and WPF
So, welcome to cooperate to implement modern and effective IT solutions in your business.
Work history
Software developer needed
Mar 29, 2024
-
Mar 29, 2024
No feedback given
Private earnings
Umbraco Development
5.00
Nov 13, 2023
-
Nov 23, 2023
"Great communication, quick responses and excellent frontend development work."
Private earnings
Part-time Powerbuilder Programmer
5.00
Sep 2, 2022
-
Jun 11, 2023
"Did a great job on some difficult PowerBuilder/PowerServer tasks. I highly recommend Roman, he's top-tier."
Private earnings
Decrypt JWT token using c#
Apr 3, 2023
-
Apr 8, 2023
No feedback given
Private earnings
C# Control to create Bitmaps from HTML
5.00
Jan 17, 2023
-
Jan 26, 2023
"Roman was great to work with. Did exactly what I needed, with quality coding and provided an example so I could easily integrate into my code."
Private earnings
Mobile MAUI app
Sep 8, 2022
-
Jan 3, 2023
No feedback given
Private earnings
Support System
Jul 15, 2022
-
Jan 3, 2023
No feedback given
Private earnings
Tickets
Jul 22, 2022
-
Aug 20, 2022
No feedback given
Private earnings
Bot v5
Aug 4, 2022
-
Aug 20, 2022
No feedback given
Private earnings
TLJ Bot v2
Jun 24, 2022
-
Jul 15, 2022
No feedback given
Private earnings
Sybase to MSSQL sync - scoping project
Nov 23, 2023
-
Present
Job in progress
Private earnings
Development Estimate Required - PHP or .NET
Oct 20, 2023
-
Present
Job in progress
Private earnings
Setting up Vendr in Umbraco 11 with Klarna checkout
Aug 17, 2023
-
Present
Job in progress
Private earnings
Power Builder Developer
Jan 25, 2021
-
Present
Job in progress
Private earnings
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