Network Engineer (Hybrid - Philadelphia, PA)

About MANTECH

Shape the future of defense with MANTECH! Since 1968, we've been a trusted partner to the Department of Defense, delivering cutting-edge projects in Cybersecurity, IT, Data Analytics, and more. We are dedicated to safeguarding our nation through advanced technology and innovative solutions. Propel your career forward and be part of something extraordinary.

Description & Requirements

MANTECH seeks a motivated, career and customer-oriented Network Engineer to join our team in Philadelphia, PA. This position is hybrid, requiring 3 days onsite per week.

You will support Department of Defense (DoD) mission systems, leading the technical management of third-party developed cybersecurity tools, coordinating shipboard installation and testing, and producing data-driven metrics to inform engineering priorities and leadership decisions.

Responsibilities

• OT Network Enumeration & Protection: Includes passive network discovery, asset inventory management, threat detection & monitoring, and vulnerability management.
• Third-Party Tool Management: Involves vendor coordination, tool integration, and acceptance testing.
• Shipboard Installation & Testing: Encompasses installation planning, site surveys & commissioning, and operational validation.
• Metrics, Reporting & Stakeholder Communication: Requires weekly & monthly metrics, data-driven recommendations, cross-team collaboration, and documentation.
• Produce clear written reports and brief technical and non-technical stakeholders, including government leadership.

Minimum Qualifications

• 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.

Preferred Qualifications

• Master's and 10+ years of experience, or PhD and 8+ years of experience.
• Project Management Professional (PMP), or Cisco Certified Network Associate (CCNA). Additional value for 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 (e.g., Modbus, DNP3, IEC 61850, 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, including availabilities, sea trials, or underway testing.
• 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.

Clearance Requirements

• Must have a current and active Secret security clearance with the ability to obtain a Top Secret clearance.

Physical Requirements

• Ability to remain in a stationary position 50% of the time.
• Occasional movement within the office to access file cabinets, office machinery, or to communicate with colleagues, management, and customers via email, phone, or virtual communication.

Compensation & Benefits

Projected Compensation Range: $116,400.00 - $194,900.00 annually.

Factors influencing final salary include contract wage determination, relevant experience, skills, competencies, geographic location, education, certifications, and Federal Government Contract Labor categories.

MANTECH's Benefits:

• Health Insurance
• Life Insurance
• Paid Time Off
• Holiday Pay
• Short-term and long-term Disability
• Retirement and Savings plans
• Learning and Development opportunities
• Wellness programs
• Other optional benefit elections

Equal Opportunity Statement

MANTECH is an equal opportunity employer. We consider all qualified applicants without regard to disability or veteran status or any other protected status. For reasonable accommodation requests, please email careers@mantech.com.