Lead System Security Engineer

Job Family:
Cyber Consulting

Travel Required:
Up to 25%

Clearance Required:
Ability to Obtain Public Trust

What You Will Do:

Key Areas & Requirements

• Review SC&A (Security Controls & Assessment) packages submitted by business and technical stewards to ensure completeness, accuracy, and alignment with security and compliance requirements.
• Submit and coordinate application security scans (e.g., vulnerability scans, SAST/DAST, dependency scans) with appropriate security teams or scanning tools.
• Analyze scan results, validating true positives vs. false positives and assessing risk severity and impact to the organization.
• Advise system owners and technical teams on remediation strategies, timelines, and best practices to address identified vulnerabilities.
• Track remediation progress and ensure findings are resolved in accordance with organizational security policies and SLAs.
• Provide security guidance throughout the system lifecycle to improve security posture and reduce recurring issues.

What You Will Need:

• Must be able to OBTAIN and MAINTAIN a Federal or DoD "PUBLIC TRUST"; candidates must obtain approved adjudication of their PUBLIC TRUST prior to onboarding with Guidehouse. Candidates with an ACTIVE PUBLIC TRUST or SUITABILITY are preferred
• Minimum of FIVE (5) years of experience in Risk Management Framework / Security Assessment and Authorization.
• RMF Experience in developing complete ATO packages for systems; including SSP, FIPS 199, E-Authentication, PTA/PIA, Incident Response Plan, Contingency Plan, and Configuration Management Plan.
• Experience in developing and conducting IR table-top tests and CP functional tests.
• 3+ years of experience as IT system administrator or engineer. Experience can include:
  • System maintenance in configuration and patching for On-premise servers and databases.
  • Deployed and managed cloud hosted environments, configured and refined network connections and security monitoring integrations.
  • Integrated third-party SaaS products with cloud environment, or collaboration Tenants like Microsoft 365.
  • Maintained network components from firewalls, IDS/IPS to VPN solution.
  • Developed and deployed web application software.
• Experience with conducting vulnerability scans and remediation findings.
• Experience with NIST 800-53 and NIST 800-37.
• Experience with cloud systems and SaaS products, and understanding of the FedRAMP requirements.
• Experience with security monitoring tools (e.g., Splunk, Tenable, BigFix, Microsoft Purview, Symantec DLP, Sentinel, CloudWatch, Security Center).
• Experience reporting to executives' system risk analysis and findings. Capable of translating technical findings to meaningful and impactful risks.
• At least one of the following Certifications:
  • CISA
  • CISSP
  • CompTIA Security+ CE Certified Professional
  • CompTIA Network+ CE Certified Professional
  • Certified Cloud Certificates (AWS, Azure, and/or Google)
• Experience with assessing 5 of the 8 types of platforms/systems:
  • ICAM Solution (Active Directory, SailPoint and CyberArk experience is preferred).
  • Network - firewalls, IDS/IPS, switches, Routers, VPN
  • Cloud Hosting (experience with at least 2 of 3 - AWS, Azure, Google)
  • On-premise Hosting (Windows and Linux platforms)
  • Microsoft 365 Tenant
  • Third Party SaaS Platforms
  • High Performance Computing Systems
  • AI Applications and Systems

What Would Be Nice To Have:

• Experience as software developer - capable of building dashboards within suites like Microsoft Power BI and Power App. Capable of configuring APIs with security tools into dashboards (such as Tenable, Splunk, and GRC Platforms including CSAM).

What We Offer:

Guidehouse offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflects our commitment to creating a diverse and supportive workplace.

Benefits include:

• Medical, Rx, Dental & Vision Insurance
• Personal and Family Sick Time & Company Paid Holidays
• Position may be eligible for a discretionary variable incentive bonus
• Parental Leave and Adoption Assistance
• 401(k) Retirement Plan
• Basic Life & Supplemental Life
• Health Savings Account, Dental/Vision & Dependent Care Flexible Spending Accounts
• Short-Term & Long-Term Disability
• Student Loan PayDown
• Tuition Reimbursement, Personal Development & Learning Opportunities
• Skills Development & Certifications
• Employee Referral Program
• Corporate Sponsored Events & Community Outreach
• Emergency Back-Up Childcare Program
• Mobility Stipend

About Guidehouse

Guidehouse is an Equal Opportunity Employer-Protected Veterans, Individuals with Disabilities or any other basis protected by law, ordinance, or regulation.

Guidehouse will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of applicable law or ordinance including the Fair Chance Ordinance of Los Angeles and San Francisco.

If you have visited our website for information about employment opportunities, or to apply for a position, and you require an accommodation, please contact Guidehouse Recruiting at 1- or via email at All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodation.

All communication regarding recruitment for a Guidehouse position will be sent from Guidehouse email domains including @guidehouse.com or Correspondence received by an applicant from any other domain should be considered unauthorized and will not be honored by Guidehouse. Note that Guidehouse will never charge a fee or require a money transfer at any stage of the recruitment process and does not collect fees from educational institutions for participation in a recruitment event. Never provide your banking information to a third party purporting to need that information to proceed in the hiring process.

If any person or organization demands money related to a job opportunity with Guidehouse, please report the matter to Guidehouse's Ethics Hotline. If you want to check the validity of correspondence you have received, please contact Guidehouse is not responsible for losses incurred (monetary or otherwise) from an applicant's dealings with unauthorized third parties.

Guidehouse does not accept unsolicited resumes through or from search firms or staffing agencies. All unsolicited resumes will be considered the property of Guidehouse and Guidehouse will not be obligated to pay a placement fee.