Network Security Engineer Jobs
Network Security Engineer jobs are open across defense, finance, healthcare, and technology at every level from associate to principal, with specializations in penetration testing, cloud security, and threat intelligence. Find a role that fits from the openings below and apply directly.
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Showing 5 of 279+ Network Security Engineer jobs
Description
Computer Network Defense (CND) Security Engineer
Suitland, MD
Leidos is hiring a Computer Network Defense (CND) Security Engineer to join our team in Suitland, MD. In this role, you will help protect critical Department of Defense networks by monitoring and analyzing security events, investigating cyber threats, performing vulnerability management activities, and supporting advanced cybersecurity technologies across Windows, Linux, and VMware environments. This is an opportunity to work on mission critical systems while collaborating with a highly skilled cyber team.
Primary Responsibilities
- Monitor and analyze security events using Trellix ePO, Splunk, Palo Alto, and RSA.
- Investigate endpoint security alerts, including malware, rogue systems, and removable media events.
- Build dashboards, perform ACAS scans, and assist with vulnerability remediation efforts.
- Apply STIGs, perform system patching, and manage SCAP scans.
- Contribute to RMF documentation and maintain system and network diagrams.
Basic Qualifications
- Bachelor's degree with 8+ years of experience, or a Master's degree with 6+ years of experience. Additional relevant experience or certifications may be considered in lieu of a degree.
- Active TS/SCI clearance (in DISS).
- Active IAT Level II certification (CompTIA Security+ CE preferred).
- Linux administration experience, specifically with Red Hat Enterprise Linux (RHEL).
- 3+ years of Computer Network Defense (CND) experience.
- Experience administering enterprise scale vulnerability management systems, including deploying multi scanner architectures with Tenable Security Center (Tenable.sc) and Nessus Manager.
- Experience managing credentialed scans, performing offline plugin updates in air gapped environments, and deploying Nessus Agents at scale across diverse endpoints.
- Hands on experience with Splunk, Trellix ePO, ACAS, and RMF.
Preferred Qualifications
- Experience with VMware ESXi.
- Experience with ACAS and Nessus.
If you're looking for an opportunity to help defend critical national security systems while working with advanced cybersecurity technologies, we'd love to hear from you.
DABAOPP1
NITESONI
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:
July 31, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $107,900.00 - $195,050.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
About Leidos
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.
Pay and Benefits
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.
Securing Your Data
Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.
Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
Description
Computer Network Defense (CND) Security Engineer
Suitland, MD
Leidos is hiring a Computer Network Defense (CND) Security Engineer to join our team in Suitland, MD. In this role, you will help protect critical Department of Defense networks by monitoring and analyzing security events, investigating cyber threats, performing vulnerability management activities, and supporting advanced cybersecurity technologies across Windows, Linux, and VMware environments. This is an opportunity to work on mission critical systems while collaborating with a highly skilled cyber team.
Primary Responsibilities
- Monitor and analyze security events using Trellix ePO, Splunk, Palo Alto, and RSA.
- Investigate endpoint security alerts, including malware, rogue systems, and removable media events.
- Build dashboards, perform ACAS scans, and assist with vulnerability remediation efforts.
- Apply STIGs, perform system patching, and manage SCAP scans.
- Contribute to RMF documentation and maintain system and network diagrams.
Basic Qualifications
- Bachelor's degree with 8+ years of experience, or a Master's degree with 6+ years of experience. Additional relevant experience or certifications may be considered in lieu of a degree.
- Active TS/SCI clearance (in DISS).
- Active IAT Level II certification (CompTIA Security+ CE preferred).
- Linux administration experience, specifically with Red Hat Enterprise Linux (RHEL).
- 3+ years of Computer Network Defense (CND) experience.
- Experience administering enterprise scale vulnerability management systems, including deploying multi scanner architectures with Tenable Security Center (Tenable.sc) and Nessus Manager.
- Experience managing credentialed scans, performing offline plugin updates in air gapped environments, and deploying Nessus Agents at scale across diverse endpoints.
- Hands on experience with Splunk, Trellix ePO, ACAS, and RMF.
Preferred Qualifications
- Experience with VMware ESXi.
- Experience with ACAS and Nessus.
If you're looking for an opportunity to help defend critical national security systems while working with advanced cybersecurity technologies, we'd love to hear from you.
DABAOPP1
NITESONI
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:
July 31, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $107,900.00 - $195,050.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
About Leidos
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.
Pay and Benefits
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.
Securing Your Data
Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.
Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
Network Security Engineer Jobs by Experience Level
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Find JobsNetwork Security Engineer Job Market
Who's Hiring
Top Industries Hiring
- Technology & Software36
- Investment & Asset Management8
- Consulting & Professional Services8
- Electronics & Hardware7
- Accounting & Auditing5
What Employers Look For
The qualifications that appear most often in network security engineer jobs.
- Bachelor's degree in computer science, cybersecurity, or a related field
- Hands-on experience with firewalls, IDS/IPS, and SIEM platforms such as Splunk or Microsoft Sentinel
- Industry certifications including CISSP, CompTIA Security+, or CEH
- Proficiency in network protocols, TCP/IP stack analysis, and VPN configuration
- Experience with cloud security controls across AWS, Azure, or Google Cloud
- Familiarity with compliance frameworks such as NIST, ISO 27001, or SOC 2
Tips for Your Network Security Engineer Job Search
Tailor your resume to each posting
Network security engineer job descriptions vary sharply by environment. A role focused on zero-trust architecture needs different keywords than one centered on SIEM tuning. Mirror the exact tools and frameworks named in each posting so your resume clears automated screening.
Lead with certifications above your summary
Certifications like CISSP, CEH, and CompTIA Security+ carry outsized weight in security hiring. Place them in a dedicated line near the top of your resume so recruiters and hiring managers spot them before scanning your work history.
Apply early to roles that fit
Migrate Mate lists network security engineer openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Filter for the environment you know
On-premise, cloud-native, and hybrid security roles require different toolsets. Search using terms specific to your background, such as AWS Security Hub, Palo Alto NGFW, or Active Directory, rather than searching the generic job title alone.
Prepare for a technical screening round
Most network security engineer interviews include a hands-on component: a packet analysis exercise, a firewall rule review, or a scenario-based threat modeling question. Rehearse explaining your methodology out loud, not just your conclusions, since interviewers assess your reasoning process.
Negotiate scope, not just compensation
Security engineers often have room to negotiate the breadth of their role, such as ownership of incident response versus pure monitoring duties. Clarifying scope before accepting reveals whether the position matches your growth goals and avoids misalignment after you start.
Network Security Engineer Jobs: Frequently Asked Questions
Which companies are hiring the most network security engineers?
The companies hiring the most network security engineers right now include Deloitte, Palo Alto Networks, and Koch, with the largest share of openings in California, Texas, and Virginia, based on current listings on Migrate Mate as of August 2026. Demand is concentrated in defense contractors, financial institutions, and large cloud providers.
How many network security engineer jobs are remote?
About 54% of network security engineer openings are fully remote or hybrid as of August 2026, though the share varies by specialization. Roles focused on threat intelligence, cloud security architecture, and vulnerability management tend to have the highest remote availability, while positions requiring hands-on hardware or classified-environment access are typically on-site.
How do you become a network security engineer?
Start by building foundational knowledge in networking and operating systems, then pursue an entry-level certification such as CompTIA Network+ or Security+. Gain hands-on practice through home labs, capture-the-flag competitions, or internships. Progress to advanced certifications like CISSP or CEH as you accumulate experience. Most employers expect at least a few years in IT or network administration before a dedicated security engineering role.
Can you get a network security engineer job with little experience?
Yes, entry-level network security engineer roles exist, but they typically require demonstrable hands-on skills even without a long work history. Building a home lab, earning CompTIA Security+ or Network+, contributing to open-source security projects, and completing platforms like TryHackMe or Hack The Box can substitute for years of professional experience in many hiring decisions.
What does the network security engineer interview process look like?
The process usually starts with a recruiter screen covering your background and certifications, followed by a technical interview that includes scenario-based questions on threat modeling, firewall configuration, and incident response. Many employers add a practical exercise, such as analyzing a packet capture or reviewing a set of firewall rules. Final rounds often involve a panel with senior engineers or a security architect.
Where can I find and apply to network security engineer jobs?
You can find and apply to network security engineer jobs on Migrate Mate, which lists current openings from across the United States. Search the listings to find roles that match your experience and specialization, then apply directly to each one that fits.
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