Power BI Expert for Dynamic Gantt Chart

I am looking for a Power BI expert to help complete a dashboard, primarily focusing on building a Gantt chart with dynamic durations based on dropdown selections while ensuring the logic is correctly implemented and retained. The dashboard has already been started (screenshot attached), with the layout in place, so the main task is to refine and finalize the functionality.

Key Requirements:

- Implement a Gantt chart where task durations dynamically adjust based on user selections (activities, durations and rules will be provided).
- Ensure logic is correctly applied and retained across different selections.
- Finalise some other additional basic visuals as needed.
-Optimize performance and usability.

Ideal Freelancer:

- Strong experience with Power BI, especially DAX and Power Query.
- Familiarity with Gantt chart implementation in Power BI (either using custom visuals or native workarounds).
- Ability to troubleshoot and optimize interactive elements.
- Experience working with project schedules and timelines is a plus.

Deliverables:

- A fully functional Power BI dashboard with a dynamic Gantt chart.
- Logic verification to ensure accurate data filtering and visualization.
- Clean and structured PBIX file ready for final review, whereby durations can be editable from the back end in the future.