Medium-Scale System Architecture Development

I'm seeking a seasoned system designer with solid experience in system architecture creation and software module development. I want to build a social media app. Key Responsibilities: - Creating an integral system architecture - Developing pertinent software modules The designed system should be moderate in size, catering to a medium-sized userbase and functionality. Ideal applicants should possess: - Proven experience in system architecture design and software module development - Understanding of managing medium-scale system projects - Strong problem-solving skills and attention to detail.