Network Engineer

About DMI

DMI is a leading provider of digital services and technology solutions, headquartered in Tysons Corner, VA. With a focus on end-to-end managed IT services, including managed mobility, cloud, cybersecurity, network operations, and application development, DMI supports public sector agencies and commercial enterprises around the globe. Recognized as a Top Workplace, DMI is committed to delivering secure, efficient, and cost-effective solutions that drive measurable results.

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DMI is seeking a Network Engineer to provide implementation and operational support for secure network infrastructure at a federal agency client. You will work within a Cisco-based enterprise environment supporting the configuration, hardening, and continuous monitoring of network infrastructure in alignment with Zero Trust principles and federal cybersecurity standards.

Duties and Responsibilities:

• Support implementation, operation, and optimization of Cisco-based network infrastructure, including core, distribution, access, and edge layers
• Implement and maintain network security controls aligned with NIST SP 800-53 and NIST SP 800-207 Zero Trust Architecture
• Configure and manage routing, switching, and network services, including VLANs, DNS, DHCP, and VPNs; maintain secure configurations aligned with organizational standards
• Manage 802.1X port-based network access control to enforce authentication at the network edge
• Configure and maintain centralized logging for all network devices; ensure log forwarding to enterprise SIEM platforms in compliance with retention requirements
• Conduct continuous monitoring and vulnerability assessments of network infrastructure; coordinate remediation in alignment with NIST RMF
• Participate in change management processes; maintain network diagrams, SOPs, and configuration documentation
• Serve as technical advisor for complex service desk escalations; collaborate with cloud, Microsoft, and cybersecurity engineering teams
• Support incident response activities, including network-level analysis, containment actions, and forensic data collection

Education and Years of

Experience:

• Bachelor's degree in Computer Science, Information Technology, or a related field; relevant experience and certifications may be considered in lieu of a degree.
• Professional certifications in network engineering or cybersecurity, maintained continuously for a minimum of 5 years
• Experience implementing NIST SP 800-53 and NIST SP 800-207 Zero Trust Architecture in enterprise network environments
• Proficiency with Cisco routing, switching, and firewall platforms; hands‑on experience with VLANs, DNS, DHCP, and VPNs
• Experience implementing and managing 802.1X network access control
• Experience in configuring network device logging and forwarding logs to enterprise SIEM platforms
• Cisco CCNP or equivalent certification
• 3+ years of enterprise network engineering experience

Required Skills &

Certifications:

• Experience supporting incident response and forensic data collection
• CompTIA Security+ or equivalent certification
• Prior experience supporting federal government network environments

Background Requirements: Must possess or be eligible to obtain and complete a Public Trust background investigation and/or a Public Trust clearance.

• Public Trust Tier 2 clearance required.

Citizenship Status

Required:

Must be a U.S. Citizen

Physical Requirements: None required for this position.

Location: Remote, United States

DMI is a diverse, prosperous, and rewarding place to work. Our culture is shaped by five core values that guide how we work, grow, and succeed together:

• Do What’s Right
  – We lead with honesty and integrity.
• Own the Outcome
  – We take responsibility and deliver.
• Deliver for Our Customers
  – We are relentless about delivering value.
• Think Bold, Act Smart
  – We innovate with purpose.
• Win Together – We collaborate and celebrate our success.

These values aren’t just ideals—they show up in how we support every part of your well‑being:

• Convenience/Concierge
  – Virtual health visits, commuter perks, pet insurance, and entertainment discounts that make life easier.
• Development
  – Annual performance reviews,…