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Senior Network Engineer - Cisco & Zero Trust ArchitectureIMRI • United States
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Senior Network Engineer - Cisco & Zero Trust Architecture

IMRI
  • US
    United States
  • US
    United States
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Senior Network Engineer – Cisco & Zero Trust Architecture
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Location: Ashburn, Virginia
Posted: 6/17/2026
Location Name: Ashburn, VA
Wage: Depends on Experience Annual
Position Type: Full-Time
COMPANY OVERVIEW
Join our award-winning team at Information Management Resources, Inc. (IMRI), a small business leader in the technology industry known for our commitment to innovation, excellence, and authenticity. Founded in 1992, IMRI has been at the forefront of delivering advanced cybersecurity and IT solutions, safeguarding organizations against evolving threats. We have built a reputation for our expertise in Cybersecurity, Digital Transformation, Strategic Business Consulting, and Staff Augmentation. Guided by our core values of innovation, excellence, and a solution-driven mindset, we have served a diverse portfolio of customers that includes federal agencies, state and local governments, and Fortune 1000 companies.
At IMRI, we recognize the integral part our employees play in our ongoing success. To support this, we offer a comprehensive benefits package, tailored to meet the individual needs of our employees. We are committed to promoting their overall well-being and equipping them with the necessary tools to flourish in their careers. We welcome you to be a part of our ongoing mission as we continue to navigate the digital landscape, committed to empowering organizations with our innovative solutions.
POSITION TITLE: Senior Network Engineer – Cisco & Zero Trust Architecture
CLEARANCE REQUIREMENT:Must be eligible to obtain a Public Trust Tier 2 clearance or hold an active DoD security clearance
POSITION OVERVIEW: IMRI is seeking an experienced and strategicSenior Network Engineerto support a high-visibility federal customer environment. This role is responsible for leading the design, implementation, and sustainment of secure, enterprise network architectures built on Cisco technologies and aligned with Zero Trust principles. As a senior technical contributor and advisor, you will play a key role in strengthening network security, resilience, and operational performance, while supporting ongoing incident response remediation efforts and compliance with federal cybersecurity standards.
KEY RESPONSIBILITIES:
Enterprise Network Engineering & Operations
Lead the design, implementation, operation, and optimization of enterprise Cisco network infrastructure across core, distribution, access, and edge environments
Ensure high availability, scalability, performance, and resilience of mission-critical network systems
Perform advanced troubleshooting and root cause analysis (RCA) for network outages, performance issues, and security events
Network Security Architecture & Compliance
Implement and sustain network security controls aligned withNIST SP 800-53andZero Trust Architecture (NIST SP 800-207)
Drive Zero Trust adoption through network segmentation, micro-segmentation, and continuous verification strategies
Continuously assess and strengthen network security posture through monitoring, risk mitigation, and evolving best practices
Network Access Control & Identity Integration
Architect and enforce secure network access controls, including802.1X port-based authentication, role-based access, and identity-aware networking
Integrate network access with enterprise identity services to support least-privilege access models
Routing, Switching & Infrastructure Services
Oversee routing, switching, and core network services, including VLANs, DNS, DHCP, and VPNs
Ensure secure configurations, optimal performance, and alignment with organizational standards
Perimeter Security & External Access Protection
Secure public-facing and edge network environments, including firewalls, remote access solutions, and perimeter devices
Implement strict access controls, ingress/egress filtering, and monitoring to defend against external threats
Monitoring, Logging & Security Operations Enablement
Establish and manage enterprise network monitoring, logging, and alerting capabilities
Integrate network infrastructure with SIEM and network detection and response (NDR) platforms to enhance visibility and threat detection
Support 24/7 operational monitoring environments and incident response readiness
Vulnerability Management & Device Lifecycle
Lead structured vulnerability management activities, including patching, firmware updates, and remediation
Maintain lifecycle management processes to ensure all network assets remain secure, supported, and compliant
Change Management & Documentation
Ensure all network changes follow formal change management processes, including impact and security analysis
Maintain detailed network diagrams, configuration baselines, and asset inventories
Develop and maintain Standard Operating Procedures (SOPs) to support audit readiness and operational continuity
Incident Response & Security Support
Provide network-level expertise during incident response activities, including traffic analysis, containment (e.g., segmentation, traffic blocking), and forensic data collection
Support audits, assessments, and compliance reviews by providing documentation, evidence, and remediation support
Technical Leadership & Collaboration
Serve as a senior technical advisor to stakeholders and cross-functional teams
Collaborate with cybersecurity, cloud, and Microsoft engineering teams to resolve complex challenges and improve network architecture
Act as an escalation point for advanced service desk issues and network-related initiatives
Key Technical Responsibilities
Implement and maintain security controls across NIST domains (AC, CM, SC, AU)
Enforce Zero Trust architecture (segmentation, micro-segmentation, identity verification)
Design and implement least-privilege, role-based network access controls
Deploy and manage 802.1X network access enforcement
Configure centralized logging with integration to SIEM platforms
Conduct continuous monitoring, vulnerability assessments, and RMF-aligned remediation
Harden network devices using Cisco Secure Configuration Guides and secure baselines
Secure perimeter infrastructure through firewall management, filtering, and MFA enforcement
Perform root cause analysis and implement corrective/preventive actions
Maintain automated patching and firmware lifecycle processes
Administer and troubleshoot DNS services within enterprise environments
Develop and maintain accurate, up-to-date network diagrams and documentation
REQUIRED QUALIFICATIONS:
Extensive experience withCisco enterprise network engineering and operations
Advanced knowledge ofrouting, switching, and network architecture design
Demonstrated experience implementingZero Trust principlesand segmentation strategies
Strong understanding ofNIST SP 800-53andNIST SP 800-207frameworks
Hands-on experience with firewalls, VPNs, network access control, and security technologies
Expertise with802.1X, identity-based networking, and access enforcement
Experience integrating network infrastructure withSIEM and monitoring platforms
Proven ability to performsystem hardening, vulnerability remediation, and compliance support
Strong analytical and troubleshooting skills, including root cause analysis
Experience supporting structuredchange management and documentation practices
PREFERRED QUALIFICATIONS:
Experience supporting federal agencies or highly regulated environments
Familiarity withCisco Secure Configuration Guidesand security hardening standards
Experience withNIST Risk Management Framework (RMF)processes
Knowledge of automated patch management and enterprise device lifecycle strategies
IMRI offers top-tier benefits that include: medical coverage through nationally recognized carriers, ancillary coverages, paid vacation and sick leave in compliance with all state and local laws, 401(k) with company match, company paid life insurance and LTD, and several additional voluntary coverages.
Pay will be commensurate with the experience, skills, and qualifications that the candidate brings to the position.
Equal Employment Opportunity Statement
IMRI is an Equal Employment Opportunity employer. IMRI prohibits unlawful discrimination and harassment and provides equal employment opportunity to all applicants and employees consistent with applicable federal, state, and local laws. Employment decisions are based on qualifications, merit, business needs, and other lawful job-related factors without regard to race, color, religion, sex, national origin, age, disability, protected veteran status, genetic information, or any other characteristic protected by law. As a federal contractor, IMRI complies with Section 503 of the Rehabilitation Act and VEVRAA and takes affirmative action with respect to qualified individuals with disabilities and protected veterans as required by law.
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  • United States

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  • English
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