Sr. ISSE with TS/SCI Polygraph

Koitecc Solutions; Annapolis (MD); On-site; USD 131,300 - 237,350; Full time

Job summary

Leidos is seeking a Sr. Information System Security Engineer (ISSE) in the Intel Sector’s Cyber & Analytics Business Area. The role requires an active TS/SCI Polygraph.

Responsibilities span security design, risk management, and program-level assurance across distributed networks. Key duties include evaluating security architectures, coordinating with program managers and customer teams, and guiding security testing and continuous monitoring.

Qualifications

• Bachelor's degree required with 12+ years of relevant experience or equivalent
• Solid understanding of security practices, policies and vulnerability testing
• Experience applying Risk Management Framework (RMF) and IT security policy formulation
• Experience with common security tools (Nessus, NMAP, Wireshark) and secure configurations
• Comfort working on multiple systems and strong communication skills

Responsibilities

• Validate and design security for large-scale systems and distributed components
• Identify security architectures and ensure uniform policy application
• Develop technical security solutions and standards
• Assess threats and risks across the program life cycle
• Lead risk management, certification and awareness activities
• Collaborate with internal experts and communicate security concerns to managers

Skills

Security best practices

Vulnerability testing

Risk Management Framework

Communication

Task prioritization

Education

Bachelor's degree in Computer Science / Information Assurance / related field

Tools

Nessus

NMAP

Wireshark

Job description

Leidos offers a unique opportunity for a Sr. Information System Security Engineer in the Intel Sector’s Cyber & Analytics Business Area (CABA). The position requires an active TS/SCI Polygraph up front; no exceptions.

Benefits include paid time off, 11 paid holidays, a 401K with a 6% company match, flexible schedules, discounted stock purchase plans, technical upskilling, education and training support, parental paid leave, and more.

Pay Range: $131,300.00 – $237,350.00.

Responsibilities

• Validating and verifying system security requirements and establishing system security designs for large‑scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components.
• Identifying and implementing appropriate information security architectures and functionality to ensure uniform application of security policy and enterprise solutions.
• Recommending and developing technical solutions, products, and standards based on current and desired system security architecture.
• Assessing and mitigating system security threats and risks throughout the program life cycle.
• Leading and/or contributing to the security planning, assessment, risk analysis, risk management, certification and awareness activities for various system and networking operations.
• Effectively collaborating with other internal technical experts on a day‑to‑day basis.
• Communicating with Program Managers and points of contact from customer organizations when necessary, regarding security issues of significant importance.
• Participating in Program Increment Planning and related agile team activities.
• Working closely with System Engineering, Test Engineering, and Integration teams to ensure that the hardware and software architecture and implementation meet security requirements.
• Analyzing and assessing system implementation against multiple security compliance policies and recommending and implementing enhancements.
• Evaluating security solutions to ensure they meet customer specified requirements for processing information.
• Evaluating the impact of new development on the operational security posture of the system.
• Evaluating, reviewing, and testing critical software.
• Proposing, assessing, coordinating, implementing, and enforcing information system security policies, standards, and methodologies.
• Auditing and assessing system security configuration settings using common methodologies and tools.
• Managing and enforcing security strategies and policies that effect various components of geographically distributed systems.
• Providing configuration management for security‑relevant information system software.
• Serving as a subject matter expert in security architecture to include providing advice to Program Managers, customer technical experts, and internal program teams.
• Formulating security compliance requirements for new system features.
• Identifying and remediating security issues throughout the system.
• Supporting risk assessment, risk management, security control assessment, continuous monitoring, service design, and other IA program support functions.
• Working with development teams to enrich team‑wide understanding of different types of vulnerabilities, attack vectors and remediation approaches.
• Planning and conducting security verification testing of relevant Type 1 devices.

Basic Qualifications

• Bachelor’s degree in Computer Science, Information Assurance, Information Security System Engineering, or a related discipline and at least 12 years of relevant experience. Additional experience may be substituted for a degree.
• Must have a solid understanding of security practices and policies and hands‑on vulnerability testing experience using customer tools.
• Must have experience applying Risk Management Framework.
• Must have experience formulating and assessing IT security policy.
• Must have demonstrated knowledge of and experience with common security tools, such as Nessus, NMAP and Wireshark, hardware/software security implementation, communication protocol, encryption techniques/tools, and web services.
• Must have experience with secure configurations of commonly used desktop and server operating systems.
• Must be comfortable working on multiple systems and components simultaneously in various configurations.
• Must have strong verbal and written communication skills.
• Must be committed to adopting and adhering to best practices.
• Must be able to effectively plan and prioritize tasking and communicate clearly regarding technical options and trade‑offs.
• Must be capable of performing high quality work both independently and with a team in a fast‑moving environment.

Preferred Qualifications

• Five (5) years of experience with Defense in Depth Principles/technology (including access control, authorization, identification and authentication, public key infrastructure, network and enterprise security architecture) and applying risk assessment methodology to system development.
• DoD 8570 compliance with IASAE Level 2 or 3.
• Information Systems Security Engineering Professional (ISSEP) Certification.
• Computer Information Systems Security Professional (CISSP) Certification.
• Experience developing/implementing integrated security services management processes, such as assessing and auditing network penetration testing, anti‑virus planning assistance, risk analysis, and incident response.
• Experience providing information assurance support for application development that includes system security certifications and project evaluations for firewalls that encompass the development, design, and implementation.
• Experience with penetration testing tools.
• Experience with scripting languages.

Commitment to Non‑Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.