Senior Systems Security Engineer - DoD Cyber Defense (Hybrid)

Sierra Nevada Corporation; Hagerstown (MD); Hybrid; USD 120,000 - 150,000; Full time

Benefits offered by this job

401(k) match

Medical, dental, vision

Tuition reimbursement

Job summary

Sierra Nevada Corporation in Maryland seeks a Systems Security Engineer III to lead the design, implementation, and maintenance of secure IT systems and to handle high-level incident response and digital forensics. The role supports MST initiatives serving DoD, DHS, and commercial customers in a hybrid work setting.

You will guide RMF workflows, perform security control assessments, and participate in continuous monitoring, while collaborating with government authorities.

Qualifications

• Bachelor’s degree in Systems Security, Network Engineering, IT, or related field.
• 5+ years of experience in IT security or related field (9+ years if no degree).
• IAT Level III certification (CISSP, CASP, GCIH, etc.) or ability to attain within 6 months.
• Experience in application security: SAST/DAST/SCA testing.
• Familiarity with DoD STIGs, NIST SPs, and NSA guidance.

Responsibilities

• Interact with customers, team members, contractors and government officials to meet IS security objectives.
• Serve as SME in IS security for design, integration or upgrade of systems.
• Develop/review RMF-based A&A documentation.
• Conduct security control assessments under RMF and DoD regulations.
• Engage in continuous monitoring: vulnerability management, incident response, accreditation records in eMASS/XACTA.
• Evaluate work products of IS security team members.

Skills

Incident response

Digital forensics

Communication

Problem solving

Education

Bachelor’s degree in Systems Security/IT

Tools

ACAS

Nessus

eMASS

XACTA

Kubernetes

Job description

Sierra Nevada Corporation in Maryland seeks a Systems Security Engineer III to lead the design, implementation, and maintenance of secure IT systems and to handle high-level incident response and digital forensics. The role supports MST initiatives serving DoD, DHS, and commercial customers in a hybrid work setting.

You will guide RMF workflows, perform security control assessments, and participate in continuous monitoring, while collaborating with government authorities.