C/C++ coder with extensive experience with nginx/lua, who understands captchas and DDoS protection

I am looking for a C/C++ coder with extensive experience with nginx/lua, who understands captchas and DDoS protection. My goal is to create a server infrastructure that requires custom implementation of captcha and DDoS protection. The project timeline is 3-4 weeks.

Ideal skills and experience for this job include:
- Strong proficiency in C/C++ programming languages
- Extensive experience with nginx/lua
- Proficient understanding of captchas and DDoS protection
- Ability to implement custom solutions
- Familiarity with server infrastructure development
- Strong problem-solving skills and attention to detail.