Nucleus Security Engineer

We are seeking a skilled and dedicated Vulnerability Management Administrator to manage and maintain our vulnerability management program using theNucleus Securityplatform. The ideal candidate will be responsible for the day-to-day operation of the platform ensuring all assets are scanned vulnerabilities are identified and prioritized and remediation efforts are tracked and reported to stakeholders. This role is critical in helping the organization maintain a strong security posture and comply with industry regulations.

Primary Responsibilities :

• Platform Administration : Administer operate update patch configure and maintain the Nucleus vulnerability management system and integrated tools.
• Vulnerability Scanning : Configure schedule and execute regular and on-demand vulnerability scans across various environments (on-premises networks cloud services applications etc.) using integrated scanning tools like Tenable Qualys or Rapid7.
• Data Management : Ingest normalize and consolidate vulnerability data from multiple scanning tools into the Nucleus platform to create a unified view of risk.
• Analysis and Prioritization : Analyze scan results prioritize vulnerabilities based on risk asset criticality and threat intelligence (e.g. CISA KEV AI-powered insights within Nucleus) and classify their potential impact on business operations.
• Remediation Coordination : Collaborate with IT security teams and asset owners to develop and track remediation plans manage ticketing processes (using integrations like ServiceNow) and monitor Service Level Agreements (SLAs) for resolution.
• Reporting and Metrics : Generate detailed reports dashboards and metrics on vulnerability trends remediation progress and compliance status for technical teams and senior leadership.
• Process Improvement : Develop and maintain vulnerability management documentation (policies procedures playbooks) and automate processes where possible to improve efficiency using the Nucleus automation engine or scripting (Python Shell).
• Threat Research : Research and assess new and emerging security threats and vulnerabilities including zero-day events and provide guidance on risk mitigation.
• Documentation and reporting along with presentation teamwork and DHS wide collaboration are among the expected duties and mission of the task order
• Define system security & design requirements to meet FISMA and FedRAMP compliance standards
• Provide follow-up reports (technical findings feedback resolution steps taken) for Root Cause analysis engineering technical assessment and process improvement initiatives

Basic Qualifications :

Bachelors Degree and 8-10 years of experience. Additional experience may be considered in lieu of a degree.

Preferred Qualifications :

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 : November 24 2025

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 $104650.00 - $189175.00

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.

Key Skills

Splunk,IDS,Network security,Computer Networking,Identity & Access Management,PKI,PCI,NIST Standards,Security System Experience,Information Security,Encryption,Siem

Employment Type : Full-Time

Experience : years

Vacancy : 1

Monthly Salary Salary : 104650 - 189175