Senior ISSO: Cloud Security & RMF Lead (TS)

3M HEALTHCARE; Arlington (VA); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Medical, Rx, Dental & Vision Insurance

Parental Leave and Adoption Assistance

401(k) Retirement Plan

Tuition Reimbursement, Personal Dev &

Employee Referral Program

Job summary

Guidehouse is seeking an experienced Information Security Systems Officer (ISSO) to lead RMF, ATO, and continuous monitoring for a major federal initiative. You will mentor staff and guide system owners through cloud and on‑premises security in hybrid environments.

In this role, you will design secure cloud architectures across AWS and Azure, implement NIST 800-53 controls, perform risk assessments, and drive DevSecOps with SIEM and vulnerability tools.

Qualifications

• Bachelor’s degree in Cybersecurity, Information Systems, Computer Engineering, or related technical field.
• Minimum of seven years of cybersecurity or secure systems engineering experience, including cloud architecture.
• ACTIVE and CURRENT TOP SECRET federal or DOD security clearance.
• Experience with SIEM, vulnerability scanners, and endpoint protection platforms.

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.
• 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.

Skills

Security engineering

Cloud architecture

Leadership

Analytical skills

Problem-solving

Communication skills

Education

Bachelor’s degree in Cybersecurity, Information Systems, Computer Engineering, or related field

Master’s Degree (Nice to have)

Tools

Splunk

Nessus

CrowdStrike

Job description

Guidehouse is seeking an experienced Information Security Systems Officer (ISSO) to lead RMF, ATO, and continuous monitoring for a major federal initiative. You will mentor staff and guide system owners through cloud and on‑premises security in hybrid environments.

In this role, you will design secure cloud architectures across AWS and Azure, implement NIST 800-53 controls, perform risk assessments, and drive DevSecOps with SIEM and vulnerability tools.