Network Security Tools Engineer

Leidos LLC; Suitland (MD); On-site; USD 108,000 - 195,000; Full time

Benefits offered by this job

Health and Wellness programs

Income Protection

Paid Leave

Retirement

Job summary

Leidos is seeking an experienced Network Security Tools Engineer to join our cybersecurity team in Suitland, MD. You will administer, engineer, and optimize enterprise security tools to provide visibility, monitoring, detection, and protection across a mission critical environment.

The role requires active TS/SCI clearance, 8+ years of relevant experience or a Master’s with 6+ years, and hands-on work with SIEM, firewalls, IDS/IPS, endpoint security, and network visibility solutions.

Qualifications

• Bachelor’s degree or equivalent with 8+ years experience, or a Master’s with 6+ years.
• Active TS/SCI security clearance in DISS.
• Hands-on with information security, network administration or enterprise security tools.
• Solid networking knowledge: TCP/IP, DNS, DHCP, HTTP/S, routing and architecture.
• Experience with enterprise cybersecurity tech: Splunk, Sentinel, Elastic, CrowdStrike, Palo Alto, Wireshark, SteelCloud.
• Experience with Linux and Windows and troubleshooting complex tool issues.
• Ability to work with technical teams in a mission-critical enterprise.

Responsibilities

• Deploy, configure, administer, upgrade, and maintain enterprise security tools (SIEM, firewalls, proxies, IDS/IPS, endpoint security).
• Monitor health, availability, performance, and data ingestion of cybersecurity tools.
• Troubleshoot tool performance, connectivity, integration, and data collection issues.
• Support integration of security technologies across networks, systems, and platforms.
• Collaborate with SOC to optimize detections, reduce false positives, and improve alerts.
• Provide technical support during incidents and outages for security monitoring.
• Assist with automation and orchestration of cybersecurity tools via scripting.
• Analyze telemetry to identify gaps and improvements for visibility.
• Maintain architecture diagrams, runbooks, and asset inventories.

Skills

TS/SCI clearance

Networking concepts

Security tools management

Linux/Windows

Education

Bachelor's degree in Computer Science, Cybersecurity, Information Technology, or related technical discipline

Tools

Splunk

Microsoft Sentinel

Elastic

CrowdStrike

Palo Alto Networks

Wireshark

SteelCloud

Job description

Network Security Tools Engineer Location: Suitland, MD Clearance Required: Active TS/SCI Leidos is seeking an experienced Network Security Tools Engineer to join our cybersecurity team in Suitland, MD. This position will support the security technologies and infrastructure that provide visibility, monitoring, detection, and protection across a mission critical enterprise environment.

In this role, you will be responsible for the administration, engineering, optimization, integration, and troubleshooting of enterprise network security tools and platforms. You will work closely with cybersecurity operations, network engineering, and other technical teams to ensure security tools remain available, properly configured, and capable of providing reliable data to support threat detection and incident response.

The ideal candidate will bring a strong combination of networking and cybersecurity experience, along with hands on experience supporting enterprise security technologies such as SIEM, IDS/IPS, firewalls, endpoint security, packet capture, and network visibility solutions.

Primary Responsibilities

• Deploy, configure, administer, upgrade, and maintain enterprise network security tools and platforms, including SIEM, firewalls, proxy servers, packet capture solutions, IDS/IPS, endpoint security, and network visibility technologies.
• Monitor the health, availability, performance, and data ingestion of cybersecurity tools to ensure continuous visibility across the enterprise environment.
• Troubleshoot and resolve security tool performance, connectivity, integration, configuration, and data collection issues.
• Support the integration of security technologies across enterprise networks, systems, and other cybersecurity platforms.
• Collaborate with Security Operations Center teams to optimize security tools, tune detection capabilities, reduce false positives, and improve the quality of security alerts.
• Provide technical support during cybersecurity incidents and service outages, including troubleshooting issues affecting security monitoring and data collection.
• Support the integration and automation of cybersecurity tools using scripting and orchestration technologies.
• Analyze network and security telemetry to identify gaps, performance issues, and opportunities to improve security visibility.
• Maintain accurate technical documentation, including architecture diagrams, system configurations, runbooks, standard operating procedures, and asset inventories.
• Collaborate with cybersecurity, network, systems, and engineering teams to support the continued operation and improvement of the enterprise security infrastructure.

Basic Qualifications

• Bachelor’s degree in Computer Science, Cybersecurity, Information Technology, or a related technical discipline with 8+ years of relevant professional experience or a Master's degree with 6+ years of relevant professional experience.
• Equivalent practical experience may be considered in lieu of a degree, as permitted by contract requirements.
• Active TS/SCI security clearance in DISS.
• Hands on experience supporting information security, network administration, cybersecurity engineering, or enterprise security tools.
• Strong understanding of networking concepts and protocols, including TCP/IP, DNS, DHCP, HTTP/S, routing, and network security architecture.
• Experience administering or supporting enterprise cybersecurity technologies such as Splunk, Microsoft Sentinel, Elastic, CrowdStrike, Palo Alto Networks, Wireshark, SteelCloud, or similar platforms.
• Experience working with network and enterprise operating systems, including Linux and Windows.
• Experience troubleshooting complex network, system, or cybersecurity tool issues.
• Ability to work effectively with technical teams in a mission critical enterprise environment.

Required Certifications

• Active DoD 8570 compliant industry certification listed under CSSP Infrastructure Support such as SecurityX, CISSP, CASP, etc., or the ability to obtain the required certification within 30 days of hire.

Preferred Qualifications

• Vendor specific certifications from Cisco, Palo Alto Networks, Splunk, or similar technology providers.
• Experience with IDS/IPS, SIEM, endpoint detection and response, firewalls, packet capture, network visibility, or security orchestration technologies.
• Experience with scripting or automation using Python, PowerShell, Bash, or similar technologies.
• Familiarity with cloud networking and security controls within AWS, Azure, or Google Cloud Platform environments.
• Experience integrating cybersecurity tools with automation or Security Orchestration, Automation, and Response platforms.
• Experience supporting cybersecurity operations or Security Operations Center environments.

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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.

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available here.

Pay Range

Pay Range: $107,900.00 - $195,050.00

The 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.

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 $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

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.

Original Posting: October 2, 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.