"High-Level Integration Diagram Creation"

I urgently need a skilled freelancer with proficiency in draw.io to build an integration diagram for a High-Level Design document. The focus is mainly integrating platforms such as Telcom company. Although specific components or modules aren't detailed, I pour trust in your technical discretion and experience to ensure all necessary components are covered. Having pre-existing knowledge and experience in such areas is a plus. Please note that this project is time-sensitive and must be completed as soon as possible.