Network Engineer

Job Overview

General information Requisition # R68544 Locations USA-Remote Work, USA-PA-Philadelphia Posting Date 06/10/2026 Security Clearance Required Secret Remote Type Hybrid Time Type Full time & Requirements Shape the future of defense with MANTECH!

Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact.

Job Description

Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now-protect and innovate with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Network Engineer to join our team in Philadelphia, PA . This position is hybrid with 3 day s onsite. The Network Engineer will support Department of Defense (DoD) mission systems.

Responsibilities include but are not limited to: OT Network Enumeration & Protection including passive network discovery, asset inventory management, threat detection & monitoring, and vulnerability management Third-Party tool management to include vendor coordination, tool integration, and acceptance testing Shipboard Installation & Testing which includes installation planning, site surveys & commissioning, and operational validation Metrics, Reporting & Stakeholder Communication requiring 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 highly desired Project Management Professional (PMP), or Cisco Certified Network Associate (CCNA)Additional value for GICSP, GRID, CISSP, or equivalent OT/ICS-focused credentials Hands-on work 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.

, 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 ability to obtain a Top Secret clearance.

Key Responsibilities

• Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact.
• The Network Engineer will support Department of Defense (DoD) mission systems.
• This role leads the technical management of third party developed cybersecurity tools, coordinates shipboard installation and testing activities, and produces data-driven metrics that inform engineering priorities and leadership decisions.
• Responsibilities include but are not limited to: OT Network Enumeration & Protection including passive network discovery, asset inventory management, threat detection & monitoring, and vulnerability management Third-Party tool management to include vendor coordination, tool integration, and acceptance testing Shipboard Installation & Testing which includes installation planning, site surveys & commissioning, and operational validation Metrics, Reporting & Stakeholder Communication requiring 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 highly desired Project Management Professional (PMP), or Cisco Certified Network Associate (CCNA)Additional value for GICSP, GRID, CISSP, or equivalent OT/ICS-focused credentials Hands-on work 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, 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 ability to obtain a Top Secret clearance.
• Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

Required Skills and Qualifications

• General information Requisition # R68544 Locations USA-Remote Work, USA-PA-Philadelphia Posting Date 06/10/2026 Security Clearance Required Secret Remote Type Hybrid Time Type Full time & Requirements Shape the future of defense with MANTECH!
• Responsibilities include but are not limited to: OT Network Enumeration & Protection including passive network discovery, asset inventory management, threat detection & monitoring, and vulnerability management Third-Party tool management to include vendor coordination, tool integration, and acceptance testing Shipboard Installation & Testing which includes installation planning, site surveys & commissioning, and operational validation Metrics, Reporting & Stakeholder Communication requiring 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 highly desired Project Management Professional (PMP), or Cisco Certified Network Associate (CCNA)Additional value for GICSP, GRID, CISSP, or equivalent OT/ICS-focused credentials Hands-on work 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, 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 ability to obtain a Top Secret clearance.
• Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time.
• There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories.

Benefits and Perks

• MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

Work Location and Schedule

This role is listed as Remote USA with location information shown as Remote USA. The employment type is Full Time.

About the Company

ManTech is the organization connected with this listing. USA Jobs Today displays this opportunity for job discovery only, so applicants should verify company details, application instructions, and eligibility on the official employer website.