Sr. Network Engineer

Astrion • $145K — $165K *
Columbia, MD 21044In-Person
Aerospace & Defense
8 - 10 years of experience
Today
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Job Overview by Ladders

Qualifications

  • Active Top Secret security clearance (TS/SCI preferred)
  • Bachelor's degree in Network Engineering, Computer Science, or related field
  • 8+ years of experience in network engineering within DoD or classified environments
  • Deep expertise in Cisco routing & switching and Fortinet solutions
  • Hands-on experience with C2C / Cross Domain architectures and security controls
  • Active DoD 8140 compliant industry and environment certifications
  • Experience with network automation, Zero Trust architectures, and SIEM integration

Responsibilities

  • Design, implement, and maintain secure network architectures using Cisco and Fortinet solutions
  • Engineer and support classified and unclassified network environments
  • Ensure compliance with DoD Security Technical Implementation Guides (STIGs)
  • Implement and maintain Cross Domain Solutions (CDS) and Comply-to-Connect (C2C) architectures
  • Perform network hardening, vulnerability remediation, and continuous monitoring according to RMF
  • Develop and maintain network documentation, diagrams, SOPs, and security artifacts
  • Collaborate with cybersecurity and mission stakeholders to ensure secure operations

Benefits

  • Onsite position located in Columbia, MD
  • Opportunity to work within mission-critical environments
  • Engagement with Department of Defense projects
  • Work alongside industry-leading professionals in network engineering
  • Potential for professional development and training opportunities
Full Job Description
Overview

Senior Network Engineer

LOCATION: Columbia, MD (Onsite)

JOB STATUS: Full-time

CLEARANCE: Active Top Secret (TS/SCI Preferred)

TRAVEL: As Needed

SALARY RANGE: $145k - $165k

Astrion has an exciting opportunity for a highly experienced Senior Network Engineer to design, implement, secure, and maintain mission-critical network infrastructures supporting Department of Defense/Department of War (DoD/DoW) environments. The ideal candidate brings deep expertise in Cisco and Fortinet technologies, extensive experience operating within classified networks, and a proven track record of implementing and maintaining systems in compliance with Risk Management Framework (RMF), DoD STIG and Cross Domain / Comply-to-Connect (C2C) requirements.

REQUIRED QUALIFICATIONS / SKILLS
  • Active Top Secret security clearance.
    • TS/SCI preferred
  • Bachelor's degree in Network Engineering, Computer Science, or related field (or equivalent experience)
  • 8+ years of experience in network engineering within Department of Defense/Department of War (DoD/DoW) or classified environments
  • Deep expertise in:
    • Cisco routing & switching (BGP, OSPF, EIGRP, VLANs, MPLS)
    • Fortinet solutions (FortiGate, FortiOS, VPNs, security fabric)
  • Demonstrated experience implementing and maintaining DISA STIG compliance
  • Hands-on experience with C2C / Cross Domain architectures and security controls
  • Strong understanding of:
    • RMF (Risk Management Framework)
    • DISA security requirements and accreditation processes
    • DCSA Accreditation Standards
  • Active DoD 8140 (formerly DoD 8570) compliant industry certification (e.g., Security+ CE, CISSP, etc.)
  • Active DoD 8140 (formerly DoD 8570) compliant environment certification (e.g., minimum Cisco CCNP)
  • Experience with C2C Requirements:
    • Network automation (Python, Ansible)
    • Zero Trust architectures
    • SIEM integration and log analysis
    • NetFlow monitoring

KEY COMPETENCIES
  • Advanced network design and troubleshooting
  • Security hardening and compliance enforcement
  • Strong analytical and problem-solving abilities
  • Excellent communication and documentation skills
  • Ability to operate in high-security, mission-critical environments

PREFERRED QUALIFICATIONS / SKILLS
  • CCIE (Enterprise or Security)
  • Fortinet NSE 4-7 certifications
  • Project Management Experience
  • Experience briefing Executive Leadership
  • Prior experience supporting Cross Domain Solutions (CDS) programs
  • Experience with cloud-based DoD environments (e.g., Azure Government, Azure Secret)

RESPONSIBILITIES
  • Design, implement, and maintain secure network architectures using Cisco (routing/switching, ISE) and Fortinet (FortiGate) solutions
  • Design, implement, and maintain 802.1x compliance platform
  • Engineer and support classified and unclassified network environments (e.g., MDA CNET, NIPR, SIPR, JWICS as applicable)
  • Ensure compliance with DoD Security Technical Implementation Guides (STIGs) and cybersecurity policies
  • Implement and maintain Cross Domain Solutions (CDS) and Comply-to-Connect (C2C) architectures
  • Perform network hardening, vulnerability remediation, and continuous monitoring in accordance with RMF controls
  • Develop and maintain network documentation, diagrams, SOPs, and security artifacts
  • Support Authority to Operate (ATO) processes, including STIG checklists, POA&Ms, and risk assessments
  • Troubleshoot complex network and security issues across multi-vendor environments
  • Collaborate with cybersecurity, systems engineering, and mission stakeholders to ensure secure, reliable operations
  • Support audits, inspections, and compliance validation activities

About Astrion

Astrion Careers

Joining Astrion presents an unparalleled opportunity to become part of a leading team of professionals dedicated to pioneering innovation and digital transformation. Astrion, a beacon in the tech industry, offers a variety of job opportunities that cater to ambitious individuals eager to drive change and lead industries forward.

Work That Matters

At Astrion, every position is a chance to collaborate with some of the brightest minds in technology and business. The company helps the world’s most renowned companies navigate their digital transformation journeys, leveraging a unique blend of industry expertise and technological innovation.

Explore Job Opportunities and Internships

Astrion is constantly seeking passionate, curious, and creative individuals to join its team. Whether looking for full-time employment or an internship, Astrion provides a platform to develop professional skills, engage in meaningful networking, and contribute to impactful projects. Explore the myriad of positions available and find where your skills can help shape the future of technology.

Innovative Work Environment

Astrion fosters a culture of innovation where team members from diverse backgrounds come together to solve complex challenges. The company is committed to diversity training and leadership development, ensuring that all team members have the opportunity for personal and professional growth.

Benefits and Growth

Astrion is dedicated to the growth of its team members, offering substantial benefits and resources to support career advancement. This includes comprehensive health benefits, leadership training programs, and opportunities for professional development. Astrion’s commitment to career growth ensures that every team member has the resources to reach their full potential.

Join the Astrion Team

Astrion is hiring! Search open positions that match your skills and interests. The company looks for driven, solution-oriented team players. Prepare your resume, refine your interview skills, and get ready to join a team that values leadership and professional growth.

Stay Connected with Astrion Careers

Keep up to date with career tips, insider perspectives, and industry-leading insights—all from the professionals who are part of Astrion. Personalize your subscription to receive job alerts, latest news, and insider tips tailored to your preferences. Discover the exciting and rewarding career opportunities that await at Astrion.

Networking and Professional Development

Astrion values the power of networking and encourages its team to engage in events and activities that foster professional connections. This commitment to networking is integral to maintaining a vibrant, innovative, and inclusive workplace.

Empower Your Career with Astrion

Embark on a journey of professional discovery and innovation at Astrion. Whether you are starting your career or looking to enhance it, Astrion offers a dynamic environment where your ambitions can take flight.
Learn more about Astrion
Industry
Aerospace & Defense
* Ladders Estimates

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