Denis S.

I work at the two hard ends of software - software reverse engineering, and building high-performance systems where being fast and reliable is MUST. 10+ years of experience, Top Rated, 100% Job Success Score. 𝗥𝗲𝘃𝗲𝗿𝘀𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗮𝗻𝗱 𝗗𝗲𝗼𝗯𝗳𝘂𝘀𝗰𝗮𝘁𝗶𝗼𝗻 Devirtualization of protected and virtualized software, x86 disassembly, and logic recovery. I'm comfortable in heavily obfuscated binaries using IDA Pro, Ghidra, x64dbg, and WinDbg. 𝗛𝗶𝗴𝗵-𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗕𝗮𝗰𝗸𝗲𝗻𝗱𝘀 (𝗚𝗼) Payment processing, transactional platforms, custom marketplaces, and high-throughput automation and API integration. Built for reliability and scale where downtime and rounding errors both cost real money. 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵 𝗮𝗻𝗱 𝗕𝗶𝗻𝗮𝗿𝘆 𝗔𝗻𝗮𝗹𝘆𝘀𝗶𝘀 Static and dynamic analysis, malware analysis, protocol reverse engineering, and Windows NT internals - kernel and user mode. I also build the defensive side: application protection, licensing systems, and anti-reversing tooling. 𝗠𝗮𝘁𝗵-𝗛𝗲𝗮𝘃𝘆 & 𝗣𝗿𝗼𝗯𝗮𝗯𝗶𝗹𝗶𝘀𝘁𝗶𝗰 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 RNG, payout engines, and gaming logic where correctness is non-negotiable and a single bad edge case is a real liability 𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 🌱 Deep low-level expertise - C++, C, Go, Windows internals, x86 🌱 Equal ability to tear a system apart or build one that can't break 🌱 Senior judgment, clean and maintainable code, and honest timelines Feel free to message me, I'm happy to look at your problem and give you a straight answer on whether I'm the right fit and how I'd approach it