Information System Security Engineer (ISSE)

JCS Solutions LLC; Virginia; On-site; USD 90,000 - 129,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Life insurance

Short- and long-term disability

PTO

401k retirement plan with employer"s

Annual Professional Development Reimb.

Job summary

JCS Solutions LLC seeks an experienced Information System Security Engineer (ISSE) to support the NMCC Cybersecurity Team in Arlington, VA. The role focuses on cybersecurity engineering, assessments, and secure enterprise operations, with hands-on work on HBSS and ACAS technologies.

Active TS/SCI is required; salary range is $90,000–$129,000. You will design, implement, and maintain secure IT systems, lead security architecture initiatives, and mitigate risks across complex information systems

Qualifications

• Active TS/SCI clearance is required.
• Bachelor’s degree in Computer Science, Information Technology, or related field; or Master’s with 3 years of relevant experience.
• In lieu of a degree, 12 years of progressive experience may be substituted.
• 5+ years of systems engineering experience including design and architecture.

Responsibilities

• Design, implement, maintain, and troubleshoot complex information technology systems.
• Design computing infrastructure solutions to support mission requirements.
• Establish networking and security controls to ensure compliance with cybersecurity standards.
• Lead technical solution development from requirements refinement through design, build, testing, and deployment.
• Document technical solutions, analyses, recommendations, and courses of action.
• Perform and review technical security assessments of computing environments.
• Identify system vulnerabilities, cybersecurity compliance gaps, and recommended mitigations.
• Build, deploy, maintain, and patch HBSS Windows servers and ACAS RHEL 7.9/8 servers.
• Build, maintain, and patch ePO, Security Center, and Nessus infrastructure.
• Provision Security Center accounts for Vulnerability Managers.
• Analyze ACAS scan results and support remediation of vulnerabilities.
• Obtain and manage required licenses for HBSS ePO and Tenable Security Center.
• Obtain HBSS and ACAS kickstart ISOs through DISA processes.
• Build virtual servers and deploy McAfee modules through ePO.
• Configure and maintain McAfee policies across environments.
• Apply STIGs to Windows, McAfee, and ACAS RHEL servers.
• Conduct SCAP scans on Windows and RHEL systems.
• Maintain Red Hat repos and RPMs for disconnected envs.
• Configure local YUM repos to support offline patching.
• Deploy Rogue System Detection sensors across networks.
• Identify rogue subnets and unauthorized endpoints.
• Troubleshoot Security Center and Nessus issues.
• Support cybersecurity risk assessments and security engineering activities.

Skills

Systems engineering

Cybersecurity risk

Security assessments

Education

Bachelor's degree in CS/IT or related field

Master's degree related field + 3 yrs exp

12 years experience in lieu of degree

Security+ CE

CySA+

CCNA Security

GSEC

SSCP

Tools

HBSS

ACAS

ePO

Security Center

Nessus

Job description

Grow, innovate, and generate progress: Harness your expertise to solve challenges and celebrate success!

Job Summary

JCS Solutions is seeking an experienced Information System Security Engineer (ISSE) to support the National Military Command Center (NMCC) Cybersecurity Team. In this role, you will provide cybersecurity and security engineering expertise, conduct technical security assessments, support security architecture initiatives, and help maintain secure enterprise environments. The ideal candidate will bring strong systems engineering experience, expertise with HBSS and ACAS technologies, and the ability to identify and mitigate cybersecurity risks across complex information systems while supporting mission‑critical operations.

Active: TS/SCI is required.

Salary Range: $90,000 to 129,000

Location: Arlington, VA

What’s in it for you:

• Join a premier technology firm specializing in innovative solutions.
• Be part of a collaborative, inclusive, and innovative work culture.
• Enjoy tremendous growth potential in a high‑performing team environment.
• A robust benefits package:
  • Health, dental, and vision insurance
  • Life insurance
  • Short-and-long term disability
  • Paid time off (PTO)
  • 401k retirement plan with employer match
  • Annual Professional Development Reimbursement Program
  • And more!

What you will do:

• Design, implement, maintain, and troubleshoot complex information technology systems.
• Design computing infrastructure solutions that support mission requirements.
• Establish networking and security controls to ensure compliance with cybersecurity standards.
• Lead technical solution development from requirements refinement through design, build, testing, and deployment.
• Document technical solutions, analyses, recommendations, and courses of action.
• Perform and review technical security assessments of computing environments.
• Identify system vulnerabilities, cybersecurity compliance gaps, and recommended mitigation strategies.
• Build, deploy, maintain, and patch HBSS Windows servers and ACAS Red Hat Enterprise Linux (RHEL) 7.9 and 8 servers.
• Build, maintain, and patch ePO, Security Center, and Nessus infrastructure.
• Provision Security Center accounts for Vulnerability Managers.
• Analyze ACAS scan results and support remediation of vulnerability findings.
• Obtain and manage required licenses for HBSS ePO and Tenable Security Center platforms.
• Obtain HBSS and ACAS kickstart ISOs through DISA processes.
• Build virtual servers and deploy McAfee modules through ePO.
• Configure and maintain McAfee policies across multiple environments.
• Apply STIG requirements to Windows operating systems, McAfee configurations, and ACAS RHEL servers.
• Conduct SCAP scans on Windows and RHEL systems.
• Maintain Red Hat repositories and update RPM packages for disconnected environments.
• Configure local YUM repositories to support offline ACAS server patching.
• Deploy and manage Rogue System Detection sensors across network segments.
• Identify rogue subnets and unauthorized endpoints.
• Troubleshoot Security Center and Nessus scanner issues.
• Support cybersecurity risk assessments and security engineering activities.

What you will bring:

• Active TS/SCI security clearance.
• Current Security+ certification (or equivalent DoD 8140 IAT Level II certification):
  • CompTIA Security+ CE (required)
  • CompTIA CySA+
  • CCNA Security
  • GSEC
  • SSCP
• Bachelor’s degree in Computer Science, Information Technology, or a related field; or a Master’s degree in a related field with 3 years of relevant experience.
• In lieu of a degree, 12 years of intensive, progressive experience demonstrating the required proficiency may be substituted.
• 5+ years of experience with all aspects of systems engineering, including design and architecture.
• Demonstrated capability to identify security risks throughout information system network structures, including operating systems, hardware, and data transfer protocols.
• Effective communication and presentation skills with the ability to present ideas effectively in formal and informal group and individual settings.
• Strong planning, organizational, and time management skills, including the ability to effectively plan, organize, prioritize work, and follow through to completion.
• Demonstrated initiative and ability to work independently.

JCS Solutions (JCS) is a premier technology firm providing innovative solutions and high‑quality services in defense, national security, and civilian sectors. JCS offers enterprise‑wide solutions including cloud computing, software development, cybersecurity, digital modernization, and management consulting for the federal government. At JCS, we elevate our customers’ mission through the application of technology and professional services. Our commitment to investing in our workforce drives innovation and progress for our clients, employees, and communities. JCS is both a Great Place to Work and a Top Places to Work certified company. Our employees embody our core values, and we are looking for others who do too!

• Customer Experience: Strive for excellence and delight our clients
• Innovation: Embrace creative thinking to enable continual growth and powerful solutions
• Accountability: Take ownership of and pride in our actions and service delivery
• Inspire: Be inspired to be your best self and have fun in the process
• Integrity: Do the right thing, the right way, every time!
• Stewardship: The careful and responsible management of something entrusted to our care. At JCS Solutions, compensation is based on a number of factors such as location, qualifications, and applicable contract terms. The general salary range for this position is as follows: $90,000.00 - $129,000.00

Please Note:

Employment is contingent upon successfully passing a pre‑employment drug screening and any other required background checks, consistent with applicable law.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to any protected status protected by applicable federal, state, or local laws.

NOTICE

Please be aware that all JCS Solutions communications related to job interviews and offers from our recruiting team willonlycome from @JCSSolutions.com. We want to emphasize thatwe do not conduct any interviews over Discord, Slack, Skype, Zoom, or any chat app.