Oleg S.
Senior C++ developer | SQL | Databases
C++ expert is ready to help you develop new software or improve existing systems. Two decades of professional software development. Always striving to deliver perfect results, apply best practices and produce clean and maintainable code. My skills: - C, C++, C++11/14/17/20, STL, Boost - SQL databases (MySQL, MariaDB, PostgreSQL, Oracle, MS SQL Server) - network protocols (TCP, UDP, HTTP, WebSocket) - multi-threading and concurrency - packaging for Linux (DEB, RPM) - SSL/TLS encryption, OpenSSL - Amazon Web Services (AWS SDK) - REST API - Windows Management Instrumentation (WMI) - Windows kernel drivers Tools I use: - Visual Studio, Visual Studio Code - Claude Code, Codex, Cursor AI, Windsurf AI - gcc, make, cmake, git - gdb, valgrind, strace, perf
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $4.7k
Billed in all: $17,438$17k
$2.4k in the last 6 months
Across 10 contracts
Earnings, last 30 days
Skill rankings: #1 in 1 skill of 15
Rarest: top 7% in HTTP, of 91. Ranked by MRR among everyone on Upwork with the skill.
- TCP10 freelancers · 🇹🇭 #1Top 10%🇹🇭#1 of 2
- #5Boost45 freelancers · 🇹🇭 #1Top 11%🇹🇭#1 of 1
- #6HTTP91 freelancers · 🇹🇭 #1Top 7%🇹🇭#1 of 2
- #21Multithreaded Programming146 freelancers · 🇹🇭 #1Top 14%🇹🇭#1 of 3
- #30MariaDB196 freelancers · 🇹🇭 #1Top 15%🇹🇭#1 of 1
- #45Qt Framework323 freelancers · 🇹🇭 #1Top 14%🇹🇭#1 of 1
- #51Oracle PLSQL399 freelancers · 🇹🇭 #2Top 13%🇹🇭#2 of 4
- #80Oracle490 freelancers · 🇹🇭 #1Top 16%🇹🇭#1 of 1