UI/UX Designer for Cloud Collaboration Tool

I'm seeking a skilled UI/UX designer to create an intuitive and engaging interface for our cloud-based collaboration tools. The software will be compatible with Windows, macOS, and web platforms.

Key Requirements:
- Design a user-friendly interface that enhances productivity and simplifies collaboration.
- Create wireframes, prototypes, and high-fidelity mockups for all platforms.
- Conduct user research and usability testing to gather feedback and make necessary improvements.
- Collaborate with developers to ensure seamless implementation of designs.
- Provide a design system and documentation for future updates.

Ideal Skills and Experience:
- Proven experience in UI/UX design, particularly for cloud-based software.
- Strong portfolio showcasing similar projects.
- Proficiency in design tools such as Figma, Sketch, or Adobe XD.
- Excellent communication skills and ability to work within a team.
- Knowledge of design principles for desktop and web applications.

Please include relevant work samples in your bid.