Job description

AEITS, a GTSC company, seeking a Systems Engineer, Level 3 . Location: Annapolis Junction, MD All work is on-site. This is not a hybrid or remote position. Mission : Develop and maintain threat detection and response plans, procedures, and technical documentation. Clearance: Active Top Secret SCI with appropriate polygraph. Certifications: None required. Job Requirements: • Five years experience in the following Cybersecurity areas: CS architecture, engineering, design, research or implementation, COTS/GOTS CS tool implementation; and Emerging technologies in areas such as Cloud cybersecurity, orchestration/automation and software defined networking. • Five years experience in DoD, IC, and other federal government policy, directives, and instructions relevant to cybersecurity strategic planning and direction, Cybersecurity risk management and mitigation strategies, and Supply Chain Risk Management. • Five years experience in at least 2 of the following areas: DoD Architecture Framework (DoDAF) version 2.02 modeling and DoDAF system engineering analysis or development; Cryptographic development and analysis; IA and Cybersecurity architectures, concepts, principles, use cases, and standards, and DoD IC and other federal government policy, directives, and instructions relevant to IA and cybersecurity strategic planning and direction. • Systems Engineering experience with programs and contracts of similar scope, type and complexity is required. Demonstrated experience in planning and leading Systems Engineering efforts is required. Education: • Bachelor's degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university is required. • Five (5) years of additional SE experience may be substituted for a bachelor's degree. Job Responsibilities: • Maintain and upgrade kernel integrity monitoring platforms and supporting servers. • Develop and maintain threat detection and response plans, procedures, and technical documentation. • Develop security testing justifications and plans, and validate detection capabilities across endpoints, networks, boundary devices, and SIEM integrations. • Maintain and troubleshoot Nessus Scanners, including software upgrades, supporting dependencies, and documented upgrade procedures. • Evaluate security and network discovery tools for functionality, vulnerability identification, and operational suitability; coordinate evaluations with partner organizations. Cloud Systems Security Engineer • Design, implement, integrate and manage multiple security sensor platforms: EDR, XDR, NDR • Implement and manage kernel integrity monitoring software onto all endpoints • Write detection endpoint and network signatures • Operate as the lead Security Operations Center analyst to monitor for threats to the system • Monitor for threats • Develop reports on any identified threats • Implement security validation platforms to test all Security Sensors • Administer endpoints running Red Hat and Ubuntu images • Develop visibility dashboards and custom data ingest pipelines in the SIEM for each of the security sensor platforms • Develop custom pipelines for data from the security sensor platform • Develop micro-segmentation rules within VMWare NSX-T for secure communications across the enterprise Vulnerability Manager • Implement Tenable Security Center into the enterprise • Develop Scan profiles • Develop Scan Rules • Schedule Scans of the entire enterprise • Monitor scans for erroneous data and adjust them accordingly • Monitor scan results for findings and report them to the infrastructure team for remediation • Maintain levels of communication with both the infrastructure team and the ISSOs for maintenance of ATO BENEFITS - Full-time Employees • 401K with employer contribution. Fully vested at 1 year anniversary. • Five (5) weeks comprehensive annual leave (25 workdays). • Additional leave can be earned in lieu of overtime. • 11 Paid Federal Government Holidays. • Up to $5,000 annually for individually tailored education / training program. • All education plans must be pre-approved by Advantage Engineering management. • Life Insurance at 1x annual salary with employee option to purchase additional coverage for self and dependents. • Short-term and long-term disability. • We contribute a generous portion towards the cost of monthly medical plans for any of the three medical, 1 dental and 1 vision plan provided by CareFirst. • All employees are eligible to earn generous incentives and performance bonuses.   AEITS, a GTSC compan y, is proud to be an equal opportunity employer, committed to recruiting, hiring, and promoting qualified people of all backgrounds, regardless of sex, race, color, creed, national origin, religion, age, marital status, pregnancy, physical, mental or sensory disability; sexual orientation; gender identity or any other basis protected by federal, state or local law. Learn more about your EEO rights as an applicant. GTSC is committed to working with and providing reasonable accommodation to applicants with physical and mental disabilities. If you have a disability and require assistance with our online application process, please tell us how we can help by contacting us at Recruiting@GTSC.com AEGOODWICK 2026_0916

Requirements

Must-haves

AEITS, a GTSC company, seeking a Systems Engineer, Level 3 .
Location: Annapolis Junction, MD
All work is on-site. This is not a hybrid or remote position.
Mission : Develop and maintain threat detection and response plans, procedures, and technical documentation.
Clearance: Active Top Secret SCI with appropriate polygraph.
Certifications: None required.
Systems Engineering experience with programs and contracts of similar scope, type and complexity is required. Demonstrated experience in planning and leading Systems Engineering efforts is required.
Bachelor's degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university is required.
Five (5) years of additional SE experience may be substituted for a bachelor's degree.
Maintain and upgrade kernel integrity monitoring platforms and supporting servers.
Develop and maintain threat detection and response plans, procedures, and technical documentation.
Develop security testing justifications and plans, and validate detection capabilities across endpoints, networks, boundary devices, and SIEM integrations.
Maintain and troubleshoot Nessus Scanners, including software upgrades, supporting dependencies, and documented upgrade procedures.
Evaluate security and network discovery tools for functionality, vulnerability identification, and operational suitability; coordinate evaluations with partner organizations.
Cloud Systems Security Engineer
Design, implement, integrate and manage multiple security sensor platforms: EDR, XDR, NDR
Implement and manage kernel integrity monitoring software onto all endpoints
Write detection endpoint and network signatures
Operate as the lead Security Operations Center analyst to monitor for threats to the system
Monitor for threats
Develop reports on any identified threats
Implement security validation platforms to test all Security Sensors
Administer endpoints running Red Hat and Ubuntu images
Develop visibility dashboards and custom data ingest pipelines in the SIEM for each of the security sensor platforms

Nice-to-haves

None flagged.

Application prep

Use the role’s language and application details while tailoring your materials.

Platform: isolved
Effort: medium

Benefits

Benefits detected in the listing.

Dental

Vision

401k

Pto