JavaScript Communication Software Development

I am looking for a skilled JavaScript programmer to create a unique communication software that includes key features such as Video Calling, Voice Calling, and Instant Messaging. It's imperative that the software developed is markedly secure, ensuring the highest level of confidentiality in communications.

Ideal skills and experiences:
- Strong proficiency and ample experience in JavaScript
- Previous experience in creating communication software is highly preferred
- Comprehensive knowledge of implementing and maintaining high-level security measures in software development