Job Description
The Principal Network Security Engineer manages and secures Cisco-based network infrastructure, overseeing configuration, monitoring, and security operations across hybrid cloud and on-premises environments, while providing technical leadership and ensuring best practices in network security.
Key Responsibilities
- Manage, configure, monitor, and optimize Cisco networking infrastructure including firewalls, identity, and analytics platforms.
- Perform routine software, firmware upgrades, patching, and configuration updates on network and security appliances.
- Configure and enforce network access controls to ensure secure network segmentation and access.
- Manage secure remote access solutions for users and devices.
- Deploy, configure, and tune next-generation perimeter and detection tools to enforce security policies.
- Oversee application delivery and web application security, including WAF configuration and incident response.
- Monitor network telemetry for security events and respond to incidents across on-premises and cloud environments.
- Support threat protection systems, including DDoS mitigation, and report suspicious activities.
- Collaborate with teams to design and implement secure, compliant architectures in cloud and data center environments.
- Participate in vulnerability management, remediating security exposures.
- Conduct security event and log analysis to improve detection capabilities.
- Develop and maintain documentation, runbooks, and operational standards for network security.
Requirements
- Bachelor’s degree in computer science, Engineering, or related field.
- Minimum 7 years of experience with enterprise networking and security, with significant hands-on Cisco platform management.
- Strong understanding of network firewalls, perimeter defense, and intrusion detection prevention.
- Direct experience configuring and troubleshooting network access control systems and policies.
- Familiarity with cloud platform security fundamentals AWS, Azure, or GCP in hybrid enterprise environments.
- Practical knowledge of software, firmware, and patch management for large-scale infrastructure.
- Proficiency in troubleshooting layer 2 and 3 networking, VPNs, and secure remote access solutions.
- Experience with application delivery controllers and web application security.
- Ability to analyze network endpoint telemetry and investigate security events or performance issues.
- Demonstrated skills using scripting or automation to streamline network security management.
- Hands-on experience supporting vulnerability management and compliance requirements.
- High attention to detail, documentation, and change management practices.
- Excellent communication, collaboration, and mentoring skills.
Benefits & Perks
Competitive pay
Subsidized medical plan options
HSA with generous company contribution
401(k) with employer match
Paid holidays
Wellness time
Vacation increasing with tenure
Paid maternity and bonding leave
Company-paid disability insurance
Company-paid life insurance
FSAs (Flexible Spending Accounts)
Well-being resources and activities
Casual dress work environment
Ready to Apply?
Join Alarm.com and make an impact in renewable energy
Stay Updated on Sustainability Jobs
Get the latest renewable energy jobs and career tips delivered to your inbox.
Job Alerts
Get notified about new sustainability jobs
More jobs at Alarm.com
Software Engineer II
Alarm.com
NEW
Tysons
Full Time
2d
Customer Operations Associate
Alarm.com
St. Marys
Full Time
Apr 2
Software Engineer II
Alarm.com
Tysons
Full Time
Mar 31