Sr. Systems Security Engineer (Federal)

TL;DR

Sr. Systems Security Engineer (Cybersecurity): Designing, implementing, and maintaining security control implementations for federal information systems with an accent on system hardening, vulnerability management, and compliance. Focus on applying DISA STIGs, managing SIEM/EDR tools, and ensuring technical compliance with NIST 800-53 and RMF frameworks.

Location: On-site in Washington, DC. This position requires a Public Trust clearance.

Company

A US-owned leader in solving complex technical challenges for collection and processing in the U.S. Federal Intelligence Community.

What you will do

• Perform hands-on engineering and securing of Windows, RHEL, and Unix operating systems, applying DISA STIGs across virtualization and cloud environments.
• Design and develop secure system architectures, ensuring security is integrated through the system and network lifecycles.
• Conduct and manage vulnerability scans, implement remediations, patching, and system hardening.
• Perform system administration tasks including patching, audit log management, and access reviews.
• Collaborate with ISSOs and stakeholders to support security assessments, audits, and ATO activities.
• Execute incident response (IR) activities including triage, investigation, and reporting.

Requirements

• 5-10 years of experience in information system engineering and configuration management.
• 5 years of experience in control implementation and secure system engineering or design.
• Hands-on experience with SIEM (Splunk), Vulnerability Scanning (Tenable, Nessus), and EDR (Crowdstrike).
• Expertise in Bash and/or PowerShell scripting and Active Directory administration.
• Experience with Linux (RHEL 7/8), Windows, and Oracle/SQL databases.
• Must possess a Public Trust clearance and be able to work on-site in Washington, DC.

Nice to have

• Knowledge of cloud providers: AWS, Azure, Oracle, or GCP.
• Networking experience and a Bachelor's degree in Engineering, Computer Science, or Information Systems.
• Certifications: Security+, Server+, Network+, CCNA, RHCSA, or Cloud-specific certifications (AWS/Azure).

Culture & Benefits

• Comprehensive insurance: Medical (cost-sharing), 100% company-paid Dental, Vision, and Disability.
• Financial security: 401k plan with generous match and immediate 100% vesting.
• Generous paid leave and holiday package.
• Professional development: Tuition and training reimbursement.
• Life and AD&D Insurance.