Resume and JobRESUME AND JOB
Leidos logo

Nucleus Security Engineer - Careers at Leidos

Leidos

Nucleus Security Engineer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Join Leidos as a Nucleus Security Engineer in Arlington, VA

Leidos is seeking a skilled Nucleus Security Engineer to lead vulnerability management using the cutting-edge Nucleus Security platform. This critical role ensures robust security posture, compliance with FISMA and FedRAMP, and proactive threat mitigation for high-stakes DHS missions. If you thrive in dynamic environments, outpacing the status quo, this is your opportunity to disrupt and innovate.

Primary Responsibilities

  • Administer and maintain Nucleus platform: updates, patching, configurations, and integrations with Tenable, Qualys, Rapid7.
  • Execute scheduled and on-demand scans across on-premises, AWS, Azure, and applications.
  • Normalize vulnerability data for unified risk visibility, leveraging AI-powered insights and CISA KEV.
  • Prioritize risks based on business impact, coordinate remediation via ServiceNow, and monitor SLAs.
  • Deliver executive dashboards, trend reports, and compliance metrics.
  • Automate workflows with Python/Shell and develop policies/playbooks.
  • Research zero-days, define security requirements, and support root cause analysis.

Basic Qualifications

  • Bachelor's + 8-10 years experience (or equivalent).
  • 2-4+ years in vulnerability management/security operations.
  • Hands-on Nucleus Security expertise; Tenable TVM/Wiz preferred.
  • Proficiency in network protocols, Linux/Windows, cloud security.
  • Strong analytics, communication, and teamwork skills.

Preferred Qualifications

  • Sepio ARM experience.
  • AWS/Azure environments.
  • CrowdStrike or RelativityOne.
  • Certifications: Security+, CEH.

Why Leidos?

Pay range: $107,900 - $195,050 USD. We outthink, outbuild, and outpace—join a team that refuses to fail. Full-time, mid-level role in Arlington, VA. U.S. citizenship required for security clearance.

Locations

  • Arlington, Virginia, United States

Salary

107,900 - 195,050 USD / yearly

Estimated Salary Rangehigh confidence

107,900 - 195,050 USD / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Nucleus Security platform administrationintermediate
  • Vulnerability scanning (Tenable, Qualys, Rapid7)intermediate
  • Data ingestion and normalizationintermediate
  • Risk prioritization with CISA KEV and threat intelligenceintermediate
  • Remediation tracking with ServiceNowintermediate
  • Python and Shell scripting for automationintermediate
  • FISMA and FedRAMP complianceintermediate
  • AWS and Azure cloud securityintermediate
  • Sepio Asset Risk Management (ARM)intermediate

Required Qualifications

  • Bachelor's Degree and 8-10 years of experience (or equivalent) (experience)
  • 2-4+ years in IT security with vulnerability management focus (experience)
  • Strong knowledge of Nucleus Security (Tenable TVM, Wiz a plus) (experience)
  • Experience with Linux/Windows system administration and cloud environments (experience)
  • CompTIA Security+, CEH or vulnerability management certifications (preferred) (experience)
  • Excellent analytical, communication, and cross-functional collaboration skills (experience)

Responsibilities

  • Administer, update, and maintain Nucleus vulnerability management platform and integrated tools
  • Configure, schedule, and execute vulnerability scans across on-premises, cloud, and applications
  • Ingest, normalize, and consolidate data from multiple scanners for unified risk view
  • Analyze, prioritize vulnerabilities using risk scoring, asset criticality, and threat intel
  • Coordinate remediation with IT/security teams, track SLAs via ticketing integrations
  • Generate reports, dashboards, and metrics on trends, progress, and compliance
  • Develop documentation, automate processes, and research emerging threats
  • Define security requirements for FISMA/FedRAMP and provide root cause analysis reports

Benefits

  • general: Competitive salary range $107,900 - $195,050 USD
  • general: Comprehensive health, dental, and vision insurance
  • general: 401(k) matching and retirement savings plan
  • general: Professional development and certification reimbursement
  • general: Flexible work options and paid time off
  • general: Mission-driven culture with DHS collaboration opportunities

Target Your Resume for "Nucleus Security Engineer - Careers at Leidos" , Leidos

Get personalized recommendations to optimize your resume specifically for Nucleus Security Engineer - Careers at Leidos. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Nucleus Security Engineer - Careers at Leidos" , Leidos

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

Jobs in Arlington, VALeidos CareersHiring in United StatesCybersecurity EngineeringVulnerability ManagementEngineeringInformation TechnologySecurity

Answer 10 quick questions to check your fit for Nucleus Security Engineer - Careers at Leidos @ Leidos.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.

Leidos logo

Nucleus Security Engineer - Careers at Leidos

Leidos

Nucleus Security Engineer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Join Leidos as a Nucleus Security Engineer in Arlington, VA

Leidos is seeking a skilled Nucleus Security Engineer to lead vulnerability management using the cutting-edge Nucleus Security platform. This critical role ensures robust security posture, compliance with FISMA and FedRAMP, and proactive threat mitigation for high-stakes DHS missions. If you thrive in dynamic environments, outpacing the status quo, this is your opportunity to disrupt and innovate.

Primary Responsibilities

  • Administer and maintain Nucleus platform: updates, patching, configurations, and integrations with Tenable, Qualys, Rapid7.
  • Execute scheduled and on-demand scans across on-premises, AWS, Azure, and applications.
  • Normalize vulnerability data for unified risk visibility, leveraging AI-powered insights and CISA KEV.
  • Prioritize risks based on business impact, coordinate remediation via ServiceNow, and monitor SLAs.
  • Deliver executive dashboards, trend reports, and compliance metrics.
  • Automate workflows with Python/Shell and develop policies/playbooks.
  • Research zero-days, define security requirements, and support root cause analysis.

Basic Qualifications

  • Bachelor's + 8-10 years experience (or equivalent).
  • 2-4+ years in vulnerability management/security operations.
  • Hands-on Nucleus Security expertise; Tenable TVM/Wiz preferred.
  • Proficiency in network protocols, Linux/Windows, cloud security.
  • Strong analytics, communication, and teamwork skills.

Preferred Qualifications

  • Sepio ARM experience.
  • AWS/Azure environments.
  • CrowdStrike or RelativityOne.
  • Certifications: Security+, CEH.

Why Leidos?

Pay range: $107,900 - $195,050 USD. We outthink, outbuild, and outpace—join a team that refuses to fail. Full-time, mid-level role in Arlington, VA. U.S. citizenship required for security clearance.

Locations

  • Arlington, Virginia, United States

Salary

107,900 - 195,050 USD / yearly

Estimated Salary Rangehigh confidence

107,900 - 195,050 USD / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Nucleus Security platform administrationintermediate
  • Vulnerability scanning (Tenable, Qualys, Rapid7)intermediate
  • Data ingestion and normalizationintermediate
  • Risk prioritization with CISA KEV and threat intelligenceintermediate
  • Remediation tracking with ServiceNowintermediate
  • Python and Shell scripting for automationintermediate
  • FISMA and FedRAMP complianceintermediate
  • AWS and Azure cloud securityintermediate
  • Sepio Asset Risk Management (ARM)intermediate

Required Qualifications

  • Bachelor's Degree and 8-10 years of experience (or equivalent) (experience)
  • 2-4+ years in IT security with vulnerability management focus (experience)
  • Strong knowledge of Nucleus Security (Tenable TVM, Wiz a plus) (experience)
  • Experience with Linux/Windows system administration and cloud environments (experience)
  • CompTIA Security+, CEH or vulnerability management certifications (preferred) (experience)
  • Excellent analytical, communication, and cross-functional collaboration skills (experience)

Responsibilities

  • Administer, update, and maintain Nucleus vulnerability management platform and integrated tools
  • Configure, schedule, and execute vulnerability scans across on-premises, cloud, and applications
  • Ingest, normalize, and consolidate data from multiple scanners for unified risk view
  • Analyze, prioritize vulnerabilities using risk scoring, asset criticality, and threat intel
  • Coordinate remediation with IT/security teams, track SLAs via ticketing integrations
  • Generate reports, dashboards, and metrics on trends, progress, and compliance
  • Develop documentation, automate processes, and research emerging threats
  • Define security requirements for FISMA/FedRAMP and provide root cause analysis reports

Benefits

  • general: Competitive salary range $107,900 - $195,050 USD
  • general: Comprehensive health, dental, and vision insurance
  • general: 401(k) matching and retirement savings plan
  • general: Professional development and certification reimbursement
  • general: Flexible work options and paid time off
  • general: Mission-driven culture with DHS collaboration opportunities

Target Your Resume for "Nucleus Security Engineer - Careers at Leidos" , Leidos

Get personalized recommendations to optimize your resume specifically for Nucleus Security Engineer - Careers at Leidos. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Nucleus Security Engineer - Careers at Leidos" , Leidos

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

Jobs in Arlington, VALeidos CareersHiring in United StatesCybersecurity EngineeringVulnerability ManagementEngineeringInformation TechnologySecurity

Answer 10 quick questions to check your fit for Nucleus Security Engineer - Careers at Leidos @ Leidos.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.