Computer Network Defense Analyst Night Shift

We are currently seeking a Cyber Network Defense Analyst 3rd Shift (9PM-5AM) to join the Compartmented Enterprise Services Office (CESO) effort. This program is establishing a modern secure web service (SWS) operation as part of a state-of-the-art highly automated platform capable of supporting a rapidly expanding customer population. Our team supports CESOs mission to protect networked systems and services from cyber threats as CESO migrates to a high security cloud environment operating as a 24x7 mission-critical function providing network defense monitoring and incident response services. We are looking for a self-starter capable of independently performing daily tasks while also working well within a team that requires significant coordination and communication.

This position is based in San Antonio TX and is 100% on-site.
Requires a TS/SCI US Government Security Clearance to start.

Primary Responsibilities

• Perform computer network incident detection and response activities to detect correlate identify and characterize anomalous activity indicative of threats to the CESO enterprise.
• Monitor security tools and applications for possible malicious activity investigate associated alerts or indicators and develop recommendations for a course of action including mitigation strategies as required.
• Document each event and its associated analysis in a ticketing system with clear accurate technical writing so it can be reviewed and acted on appropriately.
• Maintain regular face-to-face interaction with the customer; handle issues when they are raised by the customer with little or no supervision.
• Positively influence team performance by improving CESO processes and procedures.
• Ensure system checks are performed in a timely manner and that documentation is complete and accurate.
• Assist senior analysts and/or managers with forecasting and modeling current threats.
• Develop a strong rapport with the customer and serve as a trustworthy network defense analyst.
• Collaborate with infrastructure storage database and application teams to align network defense monitoring with CESOs operational requirements as the program transitions to its secure cloud environment.

Basic Qualifications

• Bachelors degree and 2 years of related experience; additional experience education or training may be considered in lieu of degree.
• Active TS/SCI security clearance required for this position.
• DoDD 8140 IAT Level II (or Level III) certification (e.g. Security CE).
• Strong computing systems knowledge with Windows Red Hat Cloud (AWS Azure) and particularly networking including communication protocols and familiarity with common security elements such as IDS/IPS systems and firewalls.
• Experience with implementing application/hardware security settings using vendor and DISA best business practices.
• Candidate may be asked to obtain a CI Polygraph in the future.

Preferred Qualifications

• Prior CND experience ideally within a large enterprise or DoD/IC program environment.
• Experience monitoring intrusion detection and computer network defense appliances applications and analyzing associated alerts.
• Experience documenting analysis and providing response recommendations in a ticketing/case management system.
• Experience reviewing system logs manually and using automatic SIEMs tools (e.g. SPLUNK Elastic) and performing network log analysis.
• Prior experience with DISA and DISAs support to mission partners.
• An Understanding of disaster recovery and business continuity concepts as they apply to secure cloud migrations.

#ceso

If youre looking for comfort keep scrolling. At Leidos we outthink outbuild and outpace the status quo because the mission demands it. Were not hiring followers. Were recruiting the ones who disrupt provoke and refuse to fail. Step 10 is ancient history. Were already at step 30 and moving faster than anyone else dares.

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.

Pay Range:

Pay Range $69550.00 - $125725.00

The Leidos pay range for this job level is a general guideline onlyand 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.

Required Experience:

IC