Principal Network Security Engineer designs, secures, and maintains Cisco-based enterprise networks and hybrid cloud environments, enforcing access controls, monitoring threats, and automating operations.
Compensation
$167.5K–$185.3K
Location
Tysons, Virginia
Work setup
Not specified
Seniority
Principal
Employment
Not specified
Experience
7+ years
Category
Security
Posted
Skills
ai
analytics
automation
aws
azure
ccnp
cisco
cissp
cloud
cloud-security
firewall
firmware
gcp
intrusion-detection
machine-learning
networking
vulnerability-management
waf
Must have
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 2/3 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.
Willingness to stay current on evolving security threats and industry best practices.
Relevant certifications (e.g., CCNP Security, CISSP, cloud security, or equivalent) are strongly preferred
Full description
The Principal Network & Security Engineer is responsible for the management, lifecycle operations, and security of the organization’s Cisco-based networking infrastructure. This individual will be expected to lead the administration, configuration, monitoring, and ongoing optimization of core network systems and platforms, as well as apply best practices in security management. The role combines technical operational management of critical Cisco platforms with broad information security responsibilities across hybrid cloud and on-premises environments
Responsibilities:
The Engineer's primary job responsibilities include:
Administer, monitor, and optimize Cisco portfolio infrastructure, including firewalls, identity, and network analytics platforms.
Execute routine software/firmware upgrades, patching, and configuration updates on network and security appliances.
Ensure effective network segmentation and secure access by configuring and enforcing network access controls.
Manage and maintain secure remote access solutions for users and devices.
Deploy, configure, and tune next-generation network perimeter and detection tools to ensure consistent policy enforcement.
Oversee application delivery and web application security solutions, assisting with WAF configuration and incident response.
Monitor network telemetry and activity for anomalous behavior or security events.
Respond to and investigate network, security, or operational incidents in both on-premises and cloud environments.
Support DDoS and threat protection systems, maintaining readiness and reporting suspicious activity.
Collaborate with infrastructure and app teams to design and implement secure, compliant architectures across cloud and datacenter.
Participate in vulnerability management processes, remediating identified exposures across managed platforms.
Contribute to security operations, including event and log analysis, and improving detection capabilities.
Develop and maintain infrastructure documentation, runbooks, and operational standards.
Enable automation for repeatable network and security processes using scripting and modern tools.
Provide technical guidance and mentoring to junior staff on security best practices and platform operations.
Other duties as assigned
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 2/3 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.
Willingness to stay current on evolving security threats and industry best practices.
Relevant certifications (e.g., CCNP Security, CISSP, cloud security, or equivalent) are strongly preferred
Please note that sponsorship of new applicants for employment authorization, or any other immigration-related support, is not available for this position at this time.WHY WORK FOR ALARM.COM?
Collaborate with outstanding people: We hire only the best. Our standards are high and our employees enjoy working alongside other high achievers.
Make an immediate impact: New employees can expect to be given real responsibility for bringing new technologies to the marketplace. You are empowered to perform as soon as you join the team!
Gain well rounded experience: offers a diverse and dynamic environment where you will get the chance to work directly with executives and develop expertise across multiple areas of the business.
Focus on fun: places high value on our team culture. We even have a committee dedicated to hosting a stand-out holiday party, happy hours, and other fun corporate events.
values working together and collaborating in person. Our employees work from the office 4 days a week.
COMPANY INFO
is the leading cloud-based platform for smart security and the Internet of Things. More than 7.6 million home and business owners depend on our solutions every day to make their properties safer, smarter, and more efficient. And every day, we’re innovating new technologies in rapidly evolving spaces including AI, video analytics, facial recognition, machine learning, energy analytics, and more. We’re seeking those who are passionate about creating change through technology and who want to make a lasting impact on the world around them.
For more information, please visit .
COMPANY BENEFITS
offers competitive pay and benefits inclusive of subsidized medical plan options, an HSA with generous company contribution, a 401(k) with employer match, and paid holidays, wellness time, and vacation increasing with tenure. Paid maternity and bonding leave, company-paid disability and life insurance, FSAs, well-being resources and activities, and a casual dress work environment are also part of our outstanding total rewards package!
is an Equal Opportunity Employer
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Notice To Third Party Agencies:
understands the value of professional recruiting services. However, we are not accepting resumes from recruiters or employment agencies for this position. In the event we receive a resume or candidate referral for this position from a third-party recruiter or agency without a previously signed agreement, we reserve the right to pursue and hire those candidate(s) without any financial obligation to you. If you are interested in working with , please email your company information and standard agreement to RecruitingPartnerships@Alarm.com.
The base salary range of this opportunity is listed below and is determined within a range based on factors including qualifications, location and experience. This allows opportunity for growth and development within the role. The base salary offered is part of a total compensation package.