Information Security Systems Officer (ISSO)– Technical Senior Analyst

Guidehouse • Arlington, VA

2d • Onsite

About The Position

Our Cybersecurity Consultants are a team of business integrators with extensive consulting and industry experience who help our clients solve their complex business issues from strategy through execution. A career in an integrated team of developers and consultants provides the opportunity to grow and contribute to our clients' business issues every day, applying a collection of security spectrum capabilities, including security strategy and governance, IT risk, security technologies, and cybercrime and breach response. We are seeking a highly experienced Information Security Systems Officer (ISSO)– to support a major federal initiative. The ISSO serves as a technical and compliance lead, guiding system owners, engineers, and security teams through RMF, ATO, and continuous monitoring activities. This role is responsible for interpreting policy, providing authoritative security guidance, leading audits, and evaluating complex systems across hybrid cloud and on‑premises environments. The ISSO will mentor junior staff and ensure that systems maintain full compliance with federal requirements, NIST security controls, and agency‑specific governance.

Requirements

• Bachelor’s degree in Cybersecurity, Information Systems, Computer Engineering, or related technical field.
• Minimum of SEVEN (7) 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.

Nice To Haves

• Master’s Degree in relevant cybersecurity or IT field
• One or more of the following certifications: ISC2Zero Trust Strategy Certificate, Certified Information Security Manager (CISM), Certified Information Systems Security Professional (CISSP), Certified Authorization Professional (CAP) / Certified in Governance, Risk and Compliance (CGRC), IAT Level II (Information Assurance Technical), IAM Level II (Information Assurance Management)
• Familiarity with scripting or automation (PowerShell, Python, Bash) is a plus
• 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

Responsibilities

• Lead design and engineering of secure cloud architectures across AWS, Azure, and hybrid environments.
• Implement and validate NIST 800‑53 security controls and cloud‑native security services (IAM, encryption, segmentation, logging).
• Conduct cloud threat modeling, risk assessments, and architecture reviews.
• Oversee cloud configuration baselines using STIGs, CIS Benchmarks, and SCAP.
• Drive cloud vulnerability and compliance efforts using ACAS/Nessus and cloud‑security posture tools.
• Support RMF engineering activities including boundary definition, inheritance documentation, and authorization packages.
• Integrate cloud‑security capabilities such as Sentinel, Splunk, and SIEM logging pipelines.
• Guide DevSecOps teams on secure CI/CD, container security, and infrastructure‑as‑code validation.
• Produce cloud architecture diagrams, design documentation, and engineering artifacts.
• Mentor junior and mid‑level ISSEs and act as a technical escalation point for cloud engineering issues.

Benefits

• 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

What This Job Offers

• Job Type: Full-time
• Career Level: Senior