ROS2 Navigation Expert Needed

I'm seeking an experienced ROS2 developer to implement navigation and path planning for a robot in mixed environments (both indoor and outdoor). The project is urgent and needs to be completed as soon as possible.

Key Requirements:
- Develop robust navigation algorithms
- Ensure reliable path planning in mixed environments
- Integrate with existing ROS2 framework
- Test and validate in real-world scenarios

Ideal Skills:
- Proficiency in ROS2
- Strong background in robotics navigation
- Experience with mixed environment challenges
- Ability to meet tight deadlines
- experience with clear path jackal robot is good

Please provide examples of similar work done and your estimated timeline for completion.