Information Systems Security Engineer (ISSE) (TS/SCI Clearance with Full Scope Polygraph Required)
About The Position
Seeking a Senior Information Systems Security Engineer (ISSE) to support large-scale, mission-critical systems across a complex, geographically distributed network environment in Annapolis Junction, MD. In this role, you will serve as a security subject matter expert, validating system security requirements, designing robust security architectures, and executing hands-on vulnerability assessments. You will collaborate closely with Systems Engineering, Test, and Integration teams in an Agile environment to ensure hardware and software implementations meet stringent compliance standards and maintain a resilient operational security posture.
Requirements
- Security Clearance: Active TS/SCI with Polygraph.
- Minimum of 12 years of experience as an ISSE on large technical programs.
- DoD 8570/8140 IASAE Level 2 or Level 3 certification.
- Proven experience applying the Risk Management Framework (RMF) and formulating/assessing IT security policies and compliance standards.
- Hands-on experience with vulnerability scanning and network analysis tools (e.g., Nessus, NMAP, Wireshark), communication protocols, encryption techniques/tools, and web services.
- In-depth experience with the secure configuration and hardening of standard enterprise desktop and server operating systems.
Nice To Haves
- Bachelor’s degree in Computer Science, Information Assurance, Information Systems Security Engineering, or a related field.
- Professional certifications: CISSP or CISSP-ISSEP.
- 5+ years of experience with Defense-in-Depth principles (access control, PKI, IAM, network and enterprise security architectures).
- Experience with scripting languages and automated testing workflows.
- Experience with advanced penetration testing tools, incident response, and application security evaluations for firewall designs and network boundaries.
Responsibilities
- Validate and establish system security designs, architectures, and requirements for major system components and distributed network interfaces.
- Apply the Risk Management Framework (RMF) to lead security planning, risk assessments, control evaluations, continuous monitoring, and system authorization activities.
- Perform vulnerability testing, scanning, auditing, and assessment of system configurations using standard security tools (e.g., Nessus, NMAP, Wireshark).
- Collaborate with engineering, test, and agile development teams during Program Increment (PI) planning to formulate security compliance requirements for new capabilities.
- Plan and conduct security verification testing for Type 1 cryptographic and security-relevant devices.
- Formulate, coordinate, implement, and enforce information systems security policies, technical standards, and configuration baselines.
- Evaluate the operational security impact of new software deployments, identify vulnerabilities and attack vectors, and drive end-to-end remediation.
- Act as a primary technical advisor on security architecture and risk trade-offs for Program Managers, internal engineering teams, and customer stakeholders.
Benefits
- Comprehensive Health, Dental, and Vision Insurance
- Basic Life and Disability Insurance
- Paid Time Off (PTO) and Paid Holidays
- Paid Parental Leave
- 401(k) Retirement Plan with Company Match
- Tuition Reimbursement for continued professional education
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What This Job Offers
Job Type
Full-time
Career Level
Senior
