Aleksandr S.

I build high-performance C++ systems - network servers handling thousands of concurrent connections, security solutions processing millions of events, trading platforms with 5μs latency. 19 years of experience, $1M+ earned on Upwork, 100% Job Success. 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 & 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 Client-server applications, proxy servers, high-throughput data processing. I write cross-platform code that runs identically on Windows, Linux, and Unix. 𝗖𝘆𝗯𝗲𝗿𝘀𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 Privileged Access Management systems, anti-phishing email gateways, encryption and cryptography. I work extensively with OpenSSL, Botan, Crypto++, and Bouncy Castle. 𝗥𝗲𝘃𝗲𝗿𝘀𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 Binary analysis, protocol reverse engineering, and software internals research using IDA, Ghidra, and Frida. 𝗛𝗶𝗴𝗵-𝗙𝗿𝗲𝗾𝘂𝗲𝗻𝗰𝘆 𝗧𝗿𝗮𝗱𝗶𝗻𝗴 I designed and built an HKEX-certified trading system achieving 5μs round-trip latency between receiving market data, decision-making, and sending orders. Market data processing, order management, web API design. 𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 𝘁𝗼 𝗬𝗼𝘂𝗿 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 ▸ Modern C++23, multithreading, networking, performance optimization ▸ Ability to build from scratch or take over and evolve complex existing codebases ▸ AI-augmented development - I use tools like Claude Code to accelerate routine implementation while maintaining full architectural control and code quality Feel free to message me - I typically respond within a few hours and I'm happy to discuss your project before you commit.