Senior Information Systems Security Engineer (ISSE) - Technical

• Lead the development, engineering, and review of secure system architectures across cloud, hybrid, and on-prem environments.
• Implement and validate NIST 800-53 security controls and cloud-native security services (IAM, encryption, segmentation, logging).
• Lead threat modeling, risk assessments, and advanced system security engineering reviews.
• Oversee secure configuration management, including STIG-based hardening, SCAP assessments, and enforcement of security baselines.
• Evaluate and recommend security technologies, tools, and design patterns to support mission needs and modernization efforts.
• Provide engineering leadership during RMF activities, including boundary definition, control inheritance, system architecture documentation, and ATO engineering support.
• Lead or support security functional testing, integration testing, and validation of implemented controls.
• Guide cross-functional development, engineering, DevSecOps, and operations teams on secure integration practices.
• Mentor junior and mid-level ISSEs and act as a technical escalation point for cloud engineering issues.

• Bachelor’s degree in Cybersecurity, Information Systems, Computer Engineering, or related technical field.
• Minimum of EIGHT (8) years of cybersecurity or secure systems engineering experience, including cloud architecture.
• An ACTIVE and CURRENT TOP SECRET federal or DOD security clearance.
• Strong understanding of security frameworks and compliance standards (e.g., NIST, RMF SP 800-53 Rev 5, DoD 8570).
• Proven experience in designing and implementing enterprise security tools such as SIEM (e.g., Splunk), vulnerability scanners (e.g., Nessus), and endpoint protection platforms (e.g., Crowdstrike).
• Experience with cloud security practices and technologies (AWS, Azure, GCP).
• Demonstrated ability to lead cross-functional teams and complex technical projects.
• Strong analytical and problem-solving skills.
• Excellent communication skills with the ability to convey technical concepts to non-technical stakeholders.

What Would Be Nice To Have :

• Master’s Degree in relevant cybersecurity or IT field
• One or more of the following certifications:
• Certified Information Security Manager (CISM)
• Certified Authorization Professional (CAP) / Certified in Governance, Risk and Compliance (CGRC)
• IAT Level II (Information Assurance Technical)
• IAM Level II (Information Assurance Management)
• AWS Certified Security - Specialty, or Microsoft Certified: Cybersecurity Architect Expert.
• Hands-on experience with network security, cryptography, and/or identity management.
• Project Management Professional (PMP) or Scaled Agile Framework (SAFe) certification for managing cybersecurity projects in Agile environments

The annual salary range for this position is $113,000.00-$188,000.00. Compensation decisions depend on a wide range of factors, including but not limited to skill sets, experience and training, security clearances, licensure and certifications, and other business and organizational needs.

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
• Parental Leave
• 401(k) Retirement Plan
• Group Term Life and Travel Assistance
• Voluntary Life and AD&D Insurance
• Health Savings Account, Health Care & Dependent Care Flexible Spending Accounts
• Transit and Parking Commuter Benefits
• Short-Term & Long-Term Disability
• Tuition Reimbursement, Personal Development, Certifications & Learning Opportunities
• Employee Referral Program
• Corporate Sponsored Events & Community Outreach
• Care.com annual membership
• Employee Assistance Program
• Supplemental Benefits via Corestream (Critical Care, Hospital Indemnity, Accident Insurance, Legal Assistance and ID theft protection, etc.)
• Position may be eligible for a discretionary variable incentive bonus

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.