Adding a Function and rectify an issue in an Exiting Interactive Family Tree Website

I am looking for a diligent and talented web developer to create a family tree website. This is not a simple web design job; it requires deep understanding of handling user-based permissions and user-level collaboration functionalities while focusing on security and privacy.

Key Requirements:

- The website must display names, dates, relationship information, and photos in the family tree.

- Privacy is crucial. As such, implementation of user-based permissions is required to protect sensitive family data.

- The site should allow specified user collaboration. Specifically, only certain users should have privileges to add or edit data. A user-friendly interface supporting these editing functionalities is required.

Ideal Skills and Experience:

- Expertise in web development with a portfolio featuring similar projects

- Proven skill in building secure user-based permission systems

- Experience in developing collaboration systems for users

- A keen eye for UI/UX, creating visually pleasing and intuitive interfaces

- Familiarity with family tree structures will be an added advantage.

I'm looking forward to seeing the portfolio of developers who fit this profile.