Network Security Specialist Jobs
Network Security Specialist jobs are open across defense contracting, financial services, healthcare, technology, and government agencies, from entry-level analyst roles to senior engineer and architect positions, with specializations in penetration testing, threat detection, and incident response. Find a role that fits from the openings below and apply directly.
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Showing 5 of 279+ Network Security Specialist 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 Specialist Jobs by Experience Level
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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 specialist jobs.
- Three or more years of hands-on experience in network security or a closely related role
- Proficiency with SIEM platforms such as Splunk, Microsoft Sentinel, or IBM QRadar
- Industry certification such as CompTIA Security+, CISSP, CEH, or equivalent
- Experience configuring and managing firewalls, intrusion detection systems, and VPNs
- Knowledge of NIST, ISO 27001, or other security frameworks and compliance standards
- Bachelor's degree in cybersecurity, computer science, information technology, or a related field
Tips for Your Network Security Specialist Job Search
Tailor your resume to each stack
Network security job postings vary significantly by tool environment. Rewrite your skills section to mirror the exact platforms listed, whether that's Palo Alto, Fortinet, or Cisco, so your resume clears automated screening for each specific opening.
Lead with certifications above the fold
Certifications like CISSP, CEH, Security+, or CISM are used as hard filters by many hiring managers. Place them in your resume header or a dedicated section near the top so recruiters confirm your credentials before reading anything else.
Apply early to roles that fit
Migrate Mate lists network security specialist openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Target postings that name your sub-specialty
Searching for terms like SOC analyst, zero-trust architect, or cloud security engineer surfaces roles written for your exact background. Applying to postings that match your specific discipline significantly improves callback rates over generic security titles.
Prepare for a technical screening round
Most network security interviews include a hands-on or scenario-based round covering log analysis, firewall rule evaluation, or a mock incident response. Practice articulating your methodology out loud, not just your conclusions, since interviewers assess your reasoning process.
Negotiate clearance level as a separate item
If you hold an active security clearance, treat it as a distinct negotiating asset in your offer conversation. Clearance maintenance costs employers real money, so candidates who come with an active clearance have leverage beyond base compensation alone.
Network Security Specialist Jobs: Frequently Asked Questions
Which companies are hiring the most network security specialists?
The companies hiring the most network security specialists 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. Defense contractors, major financial institutions, and large health systems consistently post the highest volume of roles.
How many network security specialist jobs are remote?
About 54% of network security specialist openings are fully remote or hybrid as of August 2026, though availability varies by specialization. Roles focused on cloud security architecture, threat intelligence analysis, and security operations center work tend to offer the most remote flexibility, while positions requiring on-site hardware management or classified environment access are typically fully on-site.
How do you become a network security specialist?
Start by building foundational knowledge in networking protocols and operating systems, then pursue an entry-level certification such as CompTIA Security+ or Network+. Gain hands-on experience through a help desk, IT support, or junior analyst role, then specialize in an area like penetration testing or incident response. A bachelor's degree in a technical field strengthens your candidacy, and higher-level certifications like CISSP become accessible after several years of practical experience.
Can you get a network security specialist job with no experience?
Breaking in without direct experience is possible by focusing on junior SOC analyst or security operations roles, which are commonly structured as entry points into the field. Building a home lab, completing capture-the-flag competitions, earning a foundational certification like Security+, and contributing to open-source security projects all substitute for formal experience in a way that reviewers recognize. Targeting smaller companies and managed security service providers often yields more entry-level openings than large enterprises.
What does the network security specialist interview process look like?
Most hiring processes start with a recruiter or HR screen focused on your background and certifications, followed by a technical phone or video interview with a security engineer or team lead. A practical assessment comes next, typically involving a scenario exercise such as analyzing a suspicious log file, walking through an incident response plan, or evaluating a firewall configuration. Final rounds usually include a panel interview with cross-functional stakeholders and, for sensitive environments, a background or clearance review.
Where can I find and apply to network security specialist jobs?
You can find and apply to network security specialist jobs on Migrate Mate, which lists current openings from across the United States. Find roles that match your specialization, experience level, and preferred location, then apply directly to each listing from the page.
See All 279+ Network Security Specialist Jobs
Find roles that match your experience and apply in just a few clicks.
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