Senior Network Security Engineer

About the role

Muon seeks a Senior Network Security Engineer to join our team. The ideal candidate is a seasoned network security professional who will design, secure, and operate the networks and cloud environments that power our fast-growing company. In this role you will own network security across our infrastructure-including Cisco Meraki networking, Cloudflare edge and zero-trust services, and cloud platforms such as AWS and GCP-while building resilient, defensible architectures. You will partner with IT, Security, and engineering teams to protect our environments and the export-controlled data they support.

This position is onsite and requires working in our San Jose, CA office five days a week.

Responsibilities

• Design, implement, and operate secure network architectures across our on-premises sites and cloud environments.
• Own and administer our Cisco Meraki network infrastructure, including switching, wireless, security appliances, and SD-WAN.
• Manage Cloudflare services for edge security, DNS, WAF, DDoS protection, and Zero Trust network access.
• Architect and harden network security controls across AWS and GCP, including VPC design, segmentation, firewalls, and secure connectivity.
• Monitor, detect, and respond to network security events, and lead investigation and remediation of incidents.
• Implement and maintain secure remote access, VPN, and zero-trust solutions for a hybrid workforce.
• Define and enforce network segmentation and access controls that protect CUI, EAR, and ITAR-controlled data.
• Partner with IT, Security, and engineering teams to align network security with compliance, operational, and business requirements.

Qualifications

• 5+ years of network engineering and/or network security experience.
• Hands-on experience designing and operating Cisco Meraki network environments.
• Experience with Cloudflare services such as WARP, WAF, DNS, DDoS protection, and Zero Trust (ZTNA).
• Experience securing cloud networks in AWS and GCP.
• Strong understanding of network security fundamentals, including firewalls, segmentation, VPN, and zero-trust architectures.
• Familiarity with network monitoring, logging, and incident detection and response.
• Proactive, reliable, and able to work with minimal supervision.

Nice-to-have Skills

• Experience supporting U.S. Government programs.
• Experience with CUI data handling.
• Experience with EAR/ITAR-controlled data handling.
• Relevant certifications (e.g., Cisco/Meraki, Cloudflare, AWS or GCP security) or an active or eligible U.S. security clearance.

Salary

The salary range for this role is $193,000 - $218,000, plus a competitive equity grant and comprehensive benefits package. Final compensation will be determined based on skills, qualifications, experience, and geographic location as assessed during the interview process.

Muon is currently registered and able to hire in the following states

AL, AZ, CA, CO, CT, DC, FL, GA, IL, IA, ID, MD, MA, MI, MN, MO, NJ, NY, NC, OH, OR, PA, TN, TX, VT, VA, WA

ITAR/EAR Requirements

This position requires access to export controlled information.

To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency.

The Company may, for legitimate business reasons, decline to pursue any export licensing process.