Cyber Systems Security Engineer — Secret Clearance, Onsite

RTL Networks, Inc.; Sunnyvale (CA); On-site; USD 95,000 - 170,000; Full time

Job summary

RTL Networks, Inc. is hiring a Cyber Systems Security Engineer in Sunnyvale, CA. This full-time onsite role requires an Active Secret clearance and DoD 8570 IAWF/IAT II certification at hire.

You will work with ISSM/ISSO teams to ensure RMF compliance across programs and support cybersecurity tooling and artifact creation. The role emphasizes collaboration with CSSEs and engineers, change/asset management, and Agile/Jira planning to deliver cyber engineering tasks on time.

Qualifications

• Active Secret clearance required or in scope at hire.
• DoD 8570 IAWF criteria or IAT Level II certification (e.g., Security+) required at hire.
• Advanced degree or bachelor’s degree with 0–2+ years’ experience, or equivalent combination.

Responsibilities

• Ensure RMF standards compliance by coordinating with ISSM/ISSO.
• Prepare and submit RMF artifacts per SOW and ISSM delivery schedules.
• Create/update hardware/software baselines, PPSM, network diagrams and related docs.
• Apply STIGs, perform trusted downloads, maintain RMF-based compliance.
• Support program cyber tools (Qmulos, Splunk, DISA ACAS/Nessus, Trellix).
• Generate and maintain security authorization artifacts for programs.
• Collaborate with CSSEs, mission engineers and ISSM/ISSO to address findings.
• Assist change and asset management; maintain up-to-date inventories.
• Lead best-practice discussions and mentor peers across teams.
• Participate in Agile/Jira planning to scope cyber engineering tasks.

Skills

Active Secret clearance

DoD 8570 IAWF / IAT II

Security+ or equivalent

Education

Advanced degree

Bachelor's degree

Job description

RTL Networks, Inc. is hiring a Cyber Systems Security Engineer in Sunnyvale, CA. This full-time onsite role requires an Active Secret clearance and DoD 8570 IAWF/IAT II certification at hire.

You will work with ISSM/ISSO teams to ensure RMF compliance across programs and support cybersecurity tooling and artifact creation. The role emphasizes collaboration with CSSEs and engineers, change/asset management, and Agile/Jira planning to deliver cyber engineering tasks on time.