Large LAN Setup and Maintenance

I need an experienced IT professional to set up and maintain a Local Area Network (LAN) for a large network of 51+ devices.

Key Requirements:
- Design and implement a robust LAN infrastructure
- Ensure secure and efficient network connectivity
- Regular maintenance and troubleshooting
- Provide documentation and support

Ideal Skills and Experience:
- Proven experience with large-scale LAN setup
- Strong knowledge of network protocols and security
- Certifications such as CCNA or CompTIA Network+
- Excellent problem-solving skills

Please provide relevant work experience in your bids.