Senior Network Engineer

Digital Management Llc; Tysons (VA); Hybrid; USD 90,000 - 130,000; Full time

Benefits offered by this job

Virtual health visits

Tuition assistance

401(k) matches

Wellness programs

Entertainment discounts

Job summary

Digital Management Llc is seeking a Senior Network Engineer to lead secure network architecture for a federal agency. You'll design and optimize Cisco-based networks, ensuring compliance with Zero Trust and federal cybersecurity standards.

This role demands a strong technical authority, focusing on security measures and collaboration with engineering and operations teams. Ideal candidates should have substantial experience and relevant cybersecurity certifications.

Qualifications

• Bachelor's degree in a related field or equivalent experience.
• 5+ years of experience in network engineering.
• Expertise in Cisco platforms and NIST cybersecurity standards.

Responsibilities

• Design and optimize Cisco-based network infrastructure.
• Implement network security architecture according to NIST standards.
• Lead security assessments and audits.

Skills

Cisco routing and switching expertise

NIST SP 800-53 compliance

802.1X network access control

Centralized logging and SIEM integration

Incident response operations

Education

Bachelor's degree in Computer Science or related field

Cisco CCNP or CCIE certification

Tools

Cisco firewalls

VLANs

DNS and DHCP

VPNs

Job description

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. Learn more at www.dminc.com

About the Opportunity

DMI is seeking a Senior Network Engineer to serve as the senior technical authority for secure network architecture and operations at a federal agency client. In this role, you will design, implement, and continuously improve a Cisco-based enterprise network in alignment with Zero Trust principles, NIST cybersecurity standards, and federal compliance requirements — providing technical leadership across engineering, security, and operations teams.

Duties and Responsibilities:

• Design, implement, operate, and optimize Cisco-based network infrastructure, including core, distribution, access, and edge layers for high availability, scalability, and mission resilience
• Implement and maintain network security architecture aligned with NIST SP 800-53, NIST SP 800-207 Zero Trust Architecture, and Cisco security best practices
• Engineer and enforce Zero Trust network principles, including network segmentation, micro-segmentation, and continuous verification of users and devices
• Design and implement least-privilege network access controls with role-based and identity-aware access mechanisms, including 802.1X
• Configure and maintain centralized logging, SIEM integration, and NDR tool connectivity to enhance threat detection and incident response readiness
• Conduct continuous monitoring and vulnerability assessments; coordinate remediation in alignment with NIST RMF
• Secure perimeter and public-facing assets through ingress/egress filtering, firewall rule optimization, and MFA for administrative access
• Lead security assessments, audits, and compliance reviews; continuously evaluate and enhance network security posture through emerging best practices
• Serve as senior technical advisor to stakeholders; collaborate with cybersecurity, cloud, and operations teams to resolve complex issues and improve architecture
• Support incident response with network-level analysis, containment actions, and forensic data collection

Qualifications

Education and Years of Experience:

• Bachelor's degree in Computer Science, Information Technology, or a related field; relevant experience and Cisco 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 designing and implementing NIST SP 800-53 and NIST SP 800-207 Zero Trust network architectures in enterprise environments
• Expert-level proficiency with Cisco routing, switching, and firewall platforms; advanced experience with VLANs, DNS, DHCP, and VPNs
• Experience in engineering and managing 802.1X network access control and identity-aware network security
• Experience configuring centralized logging and integrating with enterprise SIEM and NDR platforms
• Experience leading or participating in security assessments, audits, and compliance reviews
• Cisco CCNP or CCIE (or equivalent) certification
• 7+ years of enterprise network engineering experience, including at least 3 years in a senior or lead engineering role

Required Skills & Certifications:

• Experience integrating SIEM and NDR platforms for real-time threat detection and alerting
• Experience supporting or leading incident response operations
• Prior experience in a federal government network engineering environment

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, US

Working at DMI

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, tuition assistance, and internal career growth opportunities to help you thrive.
• Financial– Generous 401(k) matches, life and disability insurance, and financial wellness tools to support your future.
• Recognition– Annual awards, service anniversaries, referral bonuses, and peer-to-peer shoutouts that spotlight your achievements.
• Wellness – Healthcare coverage, wellness programs, flu shots, and biometric screenings to support your health.

DMI values employees for their talents and contributions, and we take pride in helping our customers achieve their goals. Because when we live our values, we all win together.