Senior Cybersecurity Information System Security Engineer

LMI; Fort Belvoir (VA); On-site; USD 137,000 - 239,000; Full time

Job summary

An established industry player is seeking a Senior Cybersecurity Information System Security Engineer to support the US Army PEO Soldier at Fort Belvoir, Virginia. This pivotal role involves driving cybersecurity efforts, ensuring compliance with the Risk Management Framework, and supporting the operational readiness of critical systems. The ideal candidate will have extensive experience in system security engineering, a solid understanding of cloud security, and a commitment to safeguarding national defense initiatives. Join a forward-thinking team dedicated to innovation and mission success in a dynamic environment.

Qualifications

• 5+ years of experience in system/security engineering for U.S. Government systems.
• Active SECRET clearance is required.
• Proven ability with RMF documentation and compliance.

Responsibilities

• Define system security requirements and ensure compliance throughout the lifecycle.
• Conduct risk and vulnerability assessments and develop System Security Plans.
• Collaborate with teams to deliver secure systems and advise on vulnerability remediation.

Skills

System Security Engineering

Risk Management Framework (RMF)

Cybersecurity Compliance

Cloud Security

Networking and Protocols

Communication Skills

Education

BSc in IT, Cybersecurity, CS, IS, Data Science, or Software Engineering

Tools

Azure

Amazon C2S

GovCloud

Job description

Senior Cybersecurity Information System Security Engineer

Join to apply for the Senior Cybersecurity Information System Security Engineer role at LMI.

Overview

LMI is seeking a skilled Senior Cybersecurity Information Systems Security Engineer (ISSE) to support US Army PEO Soldier at Ft. Belvoir, Virginia. The ISSE will drive efforts that support software and hardware cybersecurity Risk Management Framework (RMF) Authority to Operate (ATO).

LMI is committed to powering a future-ready, high-performing government with emerging technologies. Founded in 1961, LMI has a legacy of helping the Department of Defense resolve complex logistics management challenges and continues to support federal civilian and defense agencies. Recognized as a Top Workplace in 2022 and 2024, LMI values a people-centered culture that fosters innovation and mission success.

Join LMI to advance progress and contribute to the security and operational readiness of the US Army PEO Soldier organization.

This position requires an active Secret clearance and onsite presence at Ft. Belvoir, VA.

Responsibilities

• Define system security requirements in coordination with system engineers, program managers, and Authorizing Officials.
• Ensure continuous monitoring and verification of cybersecurity requirements throughout the system lifecycle.
• Provide cybersecurity advice and guidance to stakeholders and contractor teams.
• Develop and review system security designs and architectures, including cloud, on-prem, and hybrid solutions.
• Support RMF processes, ensuring successful ATO acquisition and maintenance.
• Identify, mitigate, and track security control gaps and non-compliance issues.
• Conduct risk assessments, vulnerability assessments, and develop/maintain System Security Plans (SSPs).
• Support activities related to Interim Authority to Test (IATT), risk acceptance, and ATO processes.
• Interpret security control non-compliance and assess impact on risk and cybersecurity posture.
• Work with product teams to identify controls, develop mitigations, and track Program of Action and Milestone (POAM) documents.
• Advise system engineers on vulnerability remediation methods using security tools and best practices.
• Support cybersecurity engineering analysis, tradeoffs, and risk decisions.
• Collaborate with interdisciplinary teams to deliver secure systems.
• Build and maintain dashboards for controls, logs, and compliance monitoring.
• Experience with cloud cybersecurity implementations.
• Implement NIST SP 800-53 Rev 4 or 5 security requirements and assessment procedures.

Core KSATs For DoD Cyber Workforce

• Knowledge of networking, protocols, and network security methodologies.
• Understanding of risk management processes.
• Familiarity with cybersecurity laws, regulations, and policies.
• Knowledge of cybersecurity principles, threats, and vulnerabilities.
• Understanding of cloud service models (SaaS, IaaS, PaaS) and deployment models.

Qualifications

Required:

• BSc in IT, Cybersecurity, CS, IS, Data Science, or Software Engineering from an ABET or NCAE-C accredited institution.
• Active SECRET clearance.
• 5+ years of system/security engineering experience in U.S. Government systems.
• Experience with government cloud environments (Azure, Amazon C2S, GovCloud).
• Proven ability with RMF documentation (SSPs, POAMs).
• Experience with DoD systems, policies, and eMASS.
• Knowledge of DoD cyber regulations, FedRAMP, FISMA, and security requirements (STIGs, SRGs, NIST SP 800-53).
• Strong communication skills for technical and non-technical stakeholders.
• Certifications such as GISF, SecurityX / CASP+, CSSP, Cloud+, CSSLP, GSEC, or willingness to obtain within 30 days.

Preferred:

• Experience with cloud security planning and operations.
• Knowledge of systems engineering lifecycle and agile methodologies.
• Experience with CI/CD and DevSecOps.
• Military experience is a plus.

Target salary range: $137,791 - $238,260.