[Your Full Name]
[Your Address]
[City, State ZIP Code]
[Your Email Address]
[Your Phone Number]

[Date]

[Hiring Manager's Name]
[Their Title]
[Company Name]
[Company Address]
[City, State ZIP Code]

Dear [Hiring Manager's Name],

I am writing to apply for the Network Engineer position at [Company Name]. With [X] years of experience designing, implementing, and maintaining enterprise network infrastructure, I have consistently delivered secure, high-performance networks that support business operations and growth.

At [Current Company], I manage a network infrastructure supporting [number] users across [number] locations. I designed and implemented a network upgrade that increased bandwidth by [X]% and reduced latency by [X]%, significantly improving user experience and application performance. I successfully led a network security enhancement project that reduced vulnerabilities by [X]% and achieved compliance with [relevant security standards]. My expertise includes Cisco routing and switching, firewall configuration, VPN implementation, network monitoring tools, and protocols including TCP/IP, BGP, OSPF, and MPLS.

I am particularly interested in [Company Name] because of your [specific reason related to company's network infrastructure, recent expansion, or technology focus]. Your commitment to [specific technology or security standard] aligns with my experience and professional values. I noticed your recent [mention specific initiative or company news], which presents exciting challenges that I am well-equipped to address.

One of my significant achievements was migrating our network infrastructure to a software-defined networking (SDN) architecture, which improved network agility and reduced provisioning time by [X]%. I also implemented comprehensive network monitoring and alerting systems using [specific tools], which decreased network downtime by [X]%. My certifications include [CCNA, CCNP, or other relevant certifications].

I would appreciate the opportunity to discuss how my network engineering expertise and problem-solving abilities can contribute to [Company Name]'s infrastructure goals. Thank you for considering my application. I look forward to speaking with you about this opportunity.

Sincerely,

[Your Signature]
[Your Typed Name]