Senior ISSE & Penetration Tester - TS/SCI Poly

Leidos; Maryland; On-site; USD 131,000 - 237,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with company match

Flexible schedules

Job summary

Leidos seeks a Senior ISSE/Penetration Tester to support a large, security‑critical program within the Intel Sector’s Cyber & Analytics Business Area (CABA). The role involves hands‑on testing, vulnerability assessments, and leading security testing events.

You will collaborate with engineers across system engineering, test, and integration teams to ensure architectures and implementations meet security requirements, with a focus on DoD policies and risk management.

Qualifications

• Bachelor’s degree in Computer Science, Information Assurance, Information Security System Engineering, or a related discipline.
• At least 12 years of relevant experience; additional experience may substitute for a degree.
• Extensive knowledge of Nessus, NMAP, and Wireshark.
• Experience with Risk Management Framework and security policy development.
• Clearance TS/SCI with Polygraph.

Responsibilities

• Validate system security requirements and designs for large-scale systems.
• Lead and contribute to security testing events, publish results, and research testing tools.
• Perform penetration testing, vulnerability assessments, and web app pen tests.
• Collaborate with System Engineering, Test Engineering, and Integration teams to meet security requirements.
• Support risk assessment, risk management, and continuous monitoring activities.

Skills

Penetration testing

Security testing

Risk assessment

Security architecture

Communication skills

Education

Bachelor’s degree in Computer Science, Information Assurance, Information Security System Engineering, or a related discipline

Tools

Nessus

NMAP

Wireshark

Tenable Nessus

Job description

Leidos seeks a Senior ISSE/Penetration Tester to support a large, security‑critical program within the Intel Sector’s Cyber & Analytics Business Area (CABA). The role involves hands‑on testing, vulnerability assessments, and leading security testing events.

You will collaborate with engineers across system engineering, test, and integration teams to ensure architectures and implementations meet security requirements, with a focus on DoD policies and risk management.