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Leidos

Security Information & Event Management (SIEM) SME

Scott Air Force Base, IL$107,900 – $195,050Posted 18 days ago

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Description

Are you ready to support critical defensive cyber operations across national defense networks? Leidos' Digital Modernization sector is seeking a Security Information and Event Management Subject Matter Expert to join the GSM-O II program. In this role, you will provide vital network operations and cyber defense support to the Defense Information Systems Agency (DISA), directly impacting the Department of Defense (DoD) and Combatant Commands (COCOMs).

This role is located at Scott Air Force Base, IL and has a 100% on site requirement. As the SIEM SME, you will actively engage with customers and mission partners, maintain and support current and future SIEM platforms, ensure critical data feeds and operational readiness, and empower cyber security analysts through the creation of analytics, visualizations, and operational workflows.

What You Will Do (Primary Responsibilities)

• Maintain and support active and upcoming SIEM platforms.

• Administer and sustain enterprise SIEM platforms and analytics across their lifecycle.

• Research advanced analytics, visualizations, exploits, and associated detections to develop actionable defensive solutions.

• Train cyber security analysts on the operation and usage of SIEM tools.

• Identify, report, and track SIEM outages and complex issues that cannot be resolved locally.

• Coordinate and collaborate directly with government stakeholders to integrate emerging capabilities.

• Deliver complex technical reports while demonstrating self-motivation and strong written and verbal communication.

What You Bring (Basic Qualifications)

• Clearance & Location: Active DoD Top Secret (TS) clearance, with the ability to obtain and maintain a TS/SCI; role is 100% on-site in Columbus, OH (must currently reside within a 2-hour commute or be willing to relocate).

• Required Certifications: Current DoD 8570 IAT Level II or higher (e.g., Security+ CE, SSCP, GSEC, or 8140 equivalent), plus the ability to obtain a DoD 8570 CSSP-Analyst certification (e.g., CEH, CySA+, GCIA) within 180 days of hire.

• Education & Experience: Bachelor's degree in a related discipline with 8+ years of applicable experience (additional related experience accepted in lieu of degree).

• SIEM & Incident Defense: Deep architectural, engineering, and operational expertise with enterprise SIEM platforms (e.g., Elastic/Kibana, MDE/Sentinel, Tines, Darktrace), paired with hands-on CND (Protect, Detect, Respond, Sustain) experience in a computer incident response environment.

• Threat, Network & Telemetry Analysis: Strong grasp of threat lifecycles, attack vectors, and adversary TTPs, backed by advanced networking knowledge (TCP/IP, ports/protocols, traffic flow, OSI model, defense-in-depth) and demonstrated experience analyzing high-volume logs, Netflow, Full Packet Capture, and attack artifacts.

• Professional Execution & Adaptability: Proven ability to work independently, engage in technical self-study, collaborate across cross-functional teams to solve complex problems, and adjust work hours/schedules as mission needs dictate.

Additional Desired Skills (Preferred Qualifications)

• Advanced Certifications: Current DoD 8570 CSSP-Analyst certifications (e.g., CEH, CySA+) and/or advanced vendor certifications in operating, maintaining, or administering enterprise SIEM platforms (e.g., Splunk, Elastic/Kibana, MDE/Sentinel).

• DoD & Mission Experience: Prior background supporting DISA and DoD networks, with demonstrated experience identifying and countering Advanced Persistent Threats (APTs) and emergent cyber threats.

• SIEM Engineering & Analytics: Experience engineering and sustaining production-grade SIEM environments, developing extended cyber analytics, and applying Detection-as-Code principles.

• Systems Administration & Development: Linux- and Windows-based systems administration in virtualized or cloud environments, hands-on Unix/Linux CLI navigation, scripting/programming skills, and API development and integration.

• Threat Intelligence & Reporting: Strong working knowledge of Intelligence-Driven Defense, the Cyber Kill Chain methodology, malware analysis concepts/methods, and authoring complex technical reports detailing analytic findings.

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:

October 15, 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 - $195,050.00

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.

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.

About Leidos

https://www.leidos.com/

Size: 10,000+ employees
Industry: Information Technology

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