Senior Information Systems Security Officer

General information

Requisition # R64040 Locations USA-MD-Fort Washington Posting Date 10/31/2025 Security Clearance Required TS/SCI Remote Type Onsite Time Type Full time

Description & Requirements

Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Senior Information Systems Security Officer (ISSO) to join our team in Fort Washington, MD. This is an onsite position.

The ideal candidate will have a deep understanding of implementing various security measures to protect an organization's computer systems and networks. This role requires a strong foundation in Linux engineering and containerization technologies, as well as proficiency in applying DISA Security Technical Implementation Guides (STIGs) and operating within applications and data. The successful candidate will have a proven track record of successfully designing and implementing security solutions in cloud environments and will be able to work collaboratively with other IT professionals to ensure the security of the organization's systems and data.

Responsibilities Include but are not limited to:

• Design, deploy, and manage security solutions (Scanning, IDS/IPS, NIDS/NIPS, SIEM) in a hybrid environment.

• Research and recommend technical solutions to various controls by understanding NIST 800-53 Risk Management Framework (RMF) and CNSSI 1253 & assist in developing policies, procedures and guidelines.

• Lead the effort in closing out Plan of Action & Milestones (POA&M) items that are associated with technology-related control items and findings.

• Responsible for implementing security solutions within container orchestration technologies such as Docker and Kubernetes.

• Conducting risk assessments and vulnerability assessments via implementing CI jobs to scan for various security defects such as SAST, DAST & container scanning.

• Apply DISA STIGs to ensure compliance with security standards and policies.

Minimum Qualifications:

• Bachelors Degree or equivalent experience

• 8 + years prior relevant experience or Master's Degree and 5 + years prior experience

• Solid understanding of Linux/Unix Administration.

• Experience with applying DISA STIGs with containerization and orchestration technologies, particularly Docker and Kubernetes.

• Proficient in one or more computer programming languages commonly used in scripting & automation. IE: Bash, Python, Go, Rust.

• Demonstrated experience in automating deployments a