Network Engineer

Network Engineer

Company: ManTech Location: Philadelphia, PA (Hybrid) Work Model: Hybrid (3 days onsite) Contract: Permanent Seniority: Senior

About the Role

ManTech is seeking a motivated and customer-oriented Network Engineer to join our team supporting Department of Defense (DoD) mission systems. This is a hybrid role based in Philadelphia, PA, requiring 3 days per week onsite. You will play a crucial role in the technical management of third-party cybersecurity tools, coordinate installation and testing activities, and generate data-driven metrics to inform engineering priorities and leadership decisions.

Key Responsibilities

• Operational Technology (OT) Network Enumeration & Protection, including passive network discovery, asset inventory management, threat detection, monitoring, and vulnerability management.
• Third-Party Tool Management, encompassing vendor coordination, tool integration, and acceptance testing.
• Shipboard Installation & Testing, including installation planning, site surveys, commissioning, and operational validation.
• Metrics, Reporting & Stakeholder Communication, requiring the generation of weekly and monthly metrics, data-driven recommendations, cross-team collaboration, and documentation.
• Producing clear written reports and briefing technical and non-technical stakeholders, including government leadership.

Requirements

• Bachelor’s degree with 12+ years of experience in network engineering, OR an Associate’s degree with 14+ years of relevant experience, OR a High School diploma with 16 years of experience.
• An active and current DoD IAT Level II baseline certification (e.g., Security+ CE), or the ability to obtain one within 6 months of hire.
• Working knowledge of TCP/IP networking, packet capture and analysis (Wireshark/Zeek), SIEM platforms, firewall and segmentation design, and common vulnerability assessment workflows.
• Must possess a current and active Secret security clearance, with the ability to obtain a Top Secret clearance.

Preferred Qualifications

• Master's degree with 10+ years of experience, or PhD with 8+ years of experience.
• Project Management Professional (PMP) or Cisco Certified Network Associate (CCNA) certifications.
• GICSP, GRID, CISSP, or equivalent OT/ICS-focused credentials.
• Hands-on experience with industrial control systems, SCADA, or shipboard control systems; familiarity with OT protocols such as Modbus, DNP3, IEC 61850, or Ethernet/IP.
• Experience with passive OT monitoring platforms (e.g., Claroty, Dragos, Nozomi Networks, or equivalent) and integration with enterprise SIEMs.
• Experience supporting Navy shipboard, afloat, or deployed environments.
• Familiarity with NIST SP 800-82, IEC 62443, RMF (NIST SP 800-37), and DoD cybersecurity policy.
• Proficiency in Python, PowerShell, or Bash for data processing, metrics generation, and light tool development.

What We Offer

• Competitive salary range: $116,400.00 - $194,900.00 (actual compensation may vary based on factors such as experience, skills, location, and contract).
• Comprehensive benefits package including Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, Short-term and Long-term Disability, Retirement and Savings plans, and Learning and Development opportunities.
• Wellness programs and other optional benefit elections.
• The opportunity to shape the future of defense and make a real impact by safeguarding the nation.
• Join a team dedicated to advanced technology and innovative solutions within the Department of Defense.