Job Description

Job Description

Information System Security Engineer (ISSE)

Location: Pentagon
Clearance Required: Top Secret/SCI
Employment Type: Full-time

Overview

Join our Cybersecurity Team supporting the National Military Command Center (NMCC). We’re seeking a mission-driven Information System Security Engineer (ISSE) to lead and contribute to system security engineering, risk assessments, and security architecture across high-impact federal programs.

The ISSE will provide technical security assessments, identify vulnerabilities, and ensure compliance with federal cybersecurity regulations. This is a hands-on role working alongside engineering teams to integrate cybersecurity into complex IT systems.

Key Responsibilities

• Serve as a security engineering representative on system design and engineering teams
• Design and implement secure architectures for new and existing network systems
• Define security requirements based on NIST and DoD standards
• Apply the Risk Management Framework (RMF), NIST SP 800-53, STIGs, and SCAP tools
• Document security controls and gather artifacts for RMF and ICD 503 accreditation
• Recommend and implement vulnerability mitigation strategies
• Validate system security designs and support operational deployment
• Maintain POAMs and resolve findings from security scans and assessments
• Build, patch, and deploy HBSS (Windows) and ACAS (Linux) servers and applications
• Conduct technical security assessments and manage Nessus, Security Center, and ePO
• Provide Tier 3 support for cybersecurity tools like ACAS and HBSS/ESS
• Lead or support security risk analysis, assessments, certifications, and planning

Required Qualifications

• Active Top Secret/SCI clearance
• Security+ certification
• 10+ years of hands-on experience with FISMA and NIST frameworks
• Deep understanding of systems engineering, network architecture, and cyber risk
• Ability to identify risks across operating systems, protocols, and hardware
• Strong verbal and written communication skills
• Excellent planning, time management, and independent problem-solving skills

Preferred Qualifications

• Experience using eMASS and/or Xacta
• Ability to run SCAP scans on Windows and Red Hat Enterprise Linux (RHEL) servers
• Knowledge of licensing for HBSS ePO and Tenable Security Center
• Deep understanding of information security principles and risk assessment methodologies
• Familiarity with DoD cybersecurity compliance and RMF toolsets

Company Description

Agensys Corporation is a small business IT Services firm headquartered in Loudoun County, Virginia. Our proven methodologies allow us to identify, attract and retain the highest quality of IT professionals. Agensys Corporation’s leadership team capitalizes in over 30 years of expertise in government and commercial sectors and is one of the fastest growing Services firms in the DC Metro Area. Our goal is to develop strong relationships with our partners to understand and exceed the needs of their unique environments.

Company Description

Agensys Corporation is a small business IT Services firm headquartered in Loudoun County, Virginia. Our proven methodologies allow us to identify, attract and retain the highest quality of IT professionals. Agensys Corporation’s leadership team capitalizes in over 30 years of expertise in government and commercial sectors and is one of the fastest growing Services firms in the DC Metro Area. Our goal is to develop strong relationships with our partners to understand and exceed the needs of their unique environments.