Hello,
I have worked for a Mobile/Fixed Operator for 8 years now, and I know how to develop a quite accurate HLD and LLD, for network and deployment projects.
Also I am very familiar with the BPMN methodology for process and the delivery with Visio diagrams.
I have leaded teams for more than 10 years, so I also have the experience and knowledge for this topic.
I believe I can be a really good for your project.
Kind regards