Senior DCO Analyst

Leidos; Maryland; On-site; USD 108,000 - 195,000; Full time

Job summary

The Leidos Digital Modernization Sector is hiring a Sr. Defensive Cyber Operations Analyst for the GSM-O II program at Fort Meade, MD.

You will lead continuous monitoring, triage incidents, and provide threat-informed recommendations to senior leadership, engaging across intelligence, operations, and planning teams. Responsibilities include coordinating with cross-functional teams, leveraging SIEM tools, and applying DoD security practices to mitigate vulnerabilities across DoD networks.

Qualifications

• Bachelor's degree with 8+ years of combined education and experience.
• Active DoD TS/SCI clearance required.
• DoD 8140 WRC 511 Intermediate certification to start.
• SIEM tools experience (ArcSight, Splunk, Elastic, etc.).
• Deep understanding of cyber security principles and CND concepts.
• Ability to work independently and in cross‑functional teams.

Responsibilities

• Execute continuous network monitoring and incident handling.
• Triage events and incidents; develop AO-specific trends.
• Support cross-functional forums for threat-informed prioritization.
• Coordinate threat analysis and provide actionable recommendations.
• Leverage intelligence to identify threats and reduce vulnerabilities.
• Identify information validity and ensure accurate technical assessments.
• Generate timely, decision-quality recommendations for leadership.
• Engage with customers and partners to deliver reliable outcomes.

Skills

SIEM tools experience

CND experience

Threat intelligence

DoD threat/adversary methodologies

TTPs knowledge

Education

Bachelor's degree in a related discipline

Tools

ArcSight

Splunk

Elastic

Job description

The Leidos Digital Modernization Sector has an opening for a Sr. Defensive Cyber Operations Analyst on the GSM-O II program supporting the DISA Joint Operations Center (D2OC) at Fort Meade, Maryland. Program Summary: GSM-O II enables Current Operations Command, Control, and Defensive Cyber Operations (DCO) functions across all - Combatant Commands, Service Cyber Components, Agencies, and Field Activities’ (CC/S/A/FAs) Area of Operations (AOs) in addition to 24/7 coordination with USCYBERCOM and other partner agencies.

Primary Responsibilities

• Execute continuous network monitoring and incident handling/problem resolution.
• Triage events, incidents, and assist with developing AO specific trends.
• Support various collaborative and cross functional forums (Intelligence, Current Operations, Future Operations, Logistics, Planning, Resourcing and Requirements) to achieve centrally coordinated, threat informed and prioritized vulnerability scoring and mitigation methodology.
• Support the development, coordination, release, and compliance of orders Provide threat analysis, track relevant prioritized incidents, and provide recommendations in coordination with the Cross Functional Fusion Team.
• Leverage intelligence and operational data, information, and processes to identify threats, improve security, and reduce the enterprise’s exposure to vulnerabilities.
• Identify problems, determine accuracy and relevance of a broad range of technical information.
• Use sound judgment to generate, evaluate, and execute alternative courses of action.
• Produce timely, effective, decision-quality technical recommendations to support senior leadership.
• Actively engage with a variety of customers and mission partners, anticipating their needs, and delivering flawlessly.

Required Qualifications

• Bachelor's degree in a related discipline with 8+ years of applicable combined education and experience; additional related years of experience is accepted in lieu of a degree.
• Active DoD TS/SCI Clearance Must have a DoD-8140 WRC 511 Intermediate certification (see list below for acceptable certifications) to start.
• SIEM Tool Experience (ArcSight, Splunk, Elastic, etc..) Knowledge of network and application protocols, cyber vulnerabilities and exploitation techniques and cyber threat/adversary methodologies (TTPs)
• Computer Network Defense (CND) experience (Protect, Detect, Respond and Sustain) within a Computer Incident Response organization.
• Requires a deep understanding and the ability to apply cyber security related principles, theories, and concepts.
• Work independently and as part of a team to develop solutions to issues that are unclear and require deep technical knowledge.

Preferred Qualifications

• Experience with DISA/DCDC and DoD Networks.
• Knowledge of the DoD orders process
• Demonstrated experience briefing Senior Executive Service (SES) and General Officer/Flag Officer (GO/FO) leadership.
• Experience in building extended cyber security analytics.
• Demonstrated understanding of the life cycle of network threats, attacks, attack vectors and methods of exploitation with an understanding of intelligence driven defense and/or Cyber Kill Chain methodology.
• Experience with User Acceptance Testing (UAT)
• WRC 511 Intermediate Certifications CEH(P) GMON GRID Cloud+ FITSP-O GCED GDSA GSEC PenTest+ Security+

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: November 4, 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.

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.

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 here.

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.