Viktor R.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Last 14 years I have been developing software for the Windows and Linux platforms basically on C and C++. I wrote many different multi-threading high-productive back-end systems which have been working 24/7. Also I am very familiar with data encryption and I know when and how to use symmetric and asymmetric keys to protect data, know what is security certificates, how to check signature and how to create hash of data. For multi-platform programming I use QT Framework and hence I can create fast and beautiful front-end applications for any OS platforms. During these years I also have been working with MS SQL Server and have vast experience in design of new databases and complicated queries writing. My primary goal is to create perfect solution for the client and then continue work with him in the future. Listed below are my experience and skills. • Programming languages C/C++, VB6/.NET, T-SQL, PL-SQL. • Mobile programming iOS • Technology MFC, QT, STL, ATL, COM/COM+, ActiveX Control, Unicode, Win32 API, GDI, SQL-DMO, WMI, XML, WIX • Databases MS SQL Server, Oracle, MySQL, FireBird, Embedded InnoDB, Access • Encryption Symmetric and asymmetric keys, signatures and hashes, HASP and Guardant hardware keys DBMS: OLE DB, ODBC, ADO, ADO.NET • Version control systems Git, Visual SourceSafe, Source Offsite, SourceAnyWare, MS TFS