Stock Trading Interface for IBKR using API

I'm seeking a developer to create an intermediate-level trading interface for executing stock trades on my Interactive Brokers (IBKR) account via their API.

Key Requirements:
- The interface should support buying and selling stocks exclusively.
- It must be compatible with both Windows and MacOS.
- It should offer enhanced features beyond a basic interface.
-Open Positions should be viewed at all times on web interface

Ideal Skills:
- Proficient in API integration, specifically with Interactive Brokers.
- Experienced in developing cross-platform applications.
- Able to design user-friendly interfaces with intermediate-level functionality.

Please, only apply if you can deliver a high-quality, functional product.