Slack-Integrated Task Management for Teams

I'm seeking a developer proficient in Slack integrations to create task management features for my team.

Key Features:
- Task Assignments: The system should allow for efficient distribution of tasks among team members.
- Progress Tracking: There should be a way to monitor the status of various tasks in real-time.
- File Sharing: The system must enable easy sharing of relevant files and documents.

Ideal Skills:
- Extensive experience with Slack API.
- Proficient in task management system development.
- Strong understanding of team collaboration needs.
- Excellent knowledge of secure file sharing protocols.

I need a professional who can help enhance our team collaboration through an effective task management system.