build a simple internal system to manage inquiries

I’m looking for a developer to help build a simple internal system to manage inquiries, track follow-ups, and monitor conversion stages.

Before moving forward, I want to understand how you personally handle leads and client follow-ups in your own work.

Please include in your proposal:
- How you currently track incoming leads (tools or system you use)
- How you manage follow-ups and reminders

This project will start with an architecture discussion and planning before development begins.

Please also mention:
- Your preferred tech stack and why
- Relevant experience building similar systems
- Estimated timeline for an MVP