Information System Security Engineer (ISSE)

Trinzic; Lanham (MD); On-site; USD 110,000 - 140,000; Full time

Job summary

KBR is seeking an Information System Security Engineer (ISSE) for an on-site role in Maryland to design, implement, and maintain enterprise security across Windows, Linux, cloud, and containerized environments at Annapolis Junction. You will drive vulnerability management, automation, and secure baselines while collaborating with ISSOs and system admins.

The position requires TS clearance with SCI, IAT Level III certification, hands-on experience with Nessus, CyberArk, Splunk, and Trellix, and a

Qualifications

• Top Secret clearance with SCI
• IAT Level III certification required (SecurityX/CASP, GCIH, CISA, CISSP)
• Strong networking, cloud security, and DevSecOps background
• Experience with Tenable Nessus, CyberArk, Splunk, VMware vSphere, and Linux environments
• Ability to produce security documentation and risk assessments

Responsibilities

• Design, implement, and maintain enterprise security architecture aligned with NIST RMF, DoD STIGs, CIS benchmarks
• Perform security engineering across SDLC including requirements analysis and accreditation support
• Implement vulnerability management using Nessus, ACAS, and Qualys
• Integrate cybersecurity into Windows/Linux, cloud, and containerized environments
• Support incident response and forensics with SIEM and endpoint telemetry analysis
• Develop automation scripts (PowerShell, Bash, Python) to streamline remediation and monitoring
• Collaborate with admins, ISSOs, and teams to remediate findings and baseline configs
• Conduct security impact analyses for changes and upgrades
• Engineer endpoint protection and hardening solutions (Trellix ePO, host-based firewalls)
• Evaluate cybersecurity tools to improve monitoring and threat detection
• Produce technical security docs and architecture diagrams
• Administer CyberArk components (EPV, PVWA, CPM, PSM)
• Monitor and detect cyber events with standard supervision
• Establish risk quantification framework for cyber risks
• Determine security requirements from business needs and standards
• Implement security systems and test scripts
• Maintain security compliance and provide training

Skills

Networking (TCP/IP, firewalls, VPNs)

Cloud security (AWS/Azure)

Kubernetes

DevSecOps

NIST RMF

DoD STIGs

Education

DoD 8570.1-M/8140 IAT Level III certification

Tools

Tenable Nessus

CyberArk

Trellix

Splunk Enterprise

VMware vSphere

GitLab

Windows Server

Red Hat Enterprise Linux

Ubuntu Linux

Job description

Title: Information System Security Engineer (ISSE)

Why Join Us?

• Innovative Projects: KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions.
• Collaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace.
• Impactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense.

Responsibilities:

• Design, implement, and maintain enterprise security architecture aligned with NIST RMF, DoD STIGs, CIS benchmarks, and organizational cybersecurity policies
• Perform security engineering activities across system development lifecycle (SDLC), including requirements analysis, system design reviews, security testing, and accreditation support
• Implement vulnerability management processes utilizing Tenable Nessus, ACAS, and Qualys to identify, assess, and remediate system vulnerabilities
• Integrate cybersecurity requirements into Windows and Linux server environments, cloud infrastructure, virtualization platforms, and containerized applications
• Support incident response and forensic investigations by analyzing security logs, SIEM alerts, network traffic, and endpoint telemetry using Splunk Enterprise
• Develop automation scripts using PowerShell, Bash, and Python to streamline vulnerability remediation, account auditing, compliance reporting, and security monitoring tasks
• Collaborate with system administrators, network engineers, ISSOs, and application teams to remediate security findings and implement secure configuration baselines
• Perform security impact analysis for system changes, software deployments, and infrastructure upgrades to ensure continued compliance and operational security
• Engineer endpoint protection and hardening solutions utilizing Trellix ePO - On-prem, host-based firewalls, and application whitelisting technologies
• Evaluate and implement cybersecurity tools and technologies to improve system security posture, continuous monitoring, and threat detection capabilities
• Produce technical security documentation, architecture diagrams, standard operating procedures (SOPs), and executive-level risk assessment reports
• Experience administrating, configuring, and troubleshooting core modules such as Enterprise Password Vault (EPV), Password Vault Web Access (PVWA), Central Policy Manager (CPM), and Privileged Session Manager (PSM) in CyberArk
• Monitor, analyze, and detect cyber events and incidents within information systems and networks under general supervision
• Assist with integrated, dynamic cyber defense, coordinate and maintain security toolsets to support organizations’ continuous monitoring and ongoing authorization programs
• Establish a framework by which cyber risk can be measured and quantified in the marketplace
• Determine security requirements by evaluating business strategies and requirements; researching information security standards; conducting system security and vulnerability analyses and risk assessments; studying architecture/platform; identifying integration issues; preparing cost estimates
• Implement security systems by specifying intrusion detection methodologies and equipment; directing equipment and software installation and calibration; preparing preventive and reactive measures; creating, transmitting, and maintaining keys; providing technical support; completing documentation. Verify security systems by developing and implementing test scripts
• Maintain security by monitoring and ensuring compliance to standards, policies, and procedures; conducting incident response analyses; developing and conducting training programs
• Responsible for the design, development, implementation, and integration of a DoD IA architectures, systems, or system components for use within computing, network, and enclave environments
• Ensure that the architecture and design of development and operational systems are functional and secure
• This includes designs for program of record systems and special purpose processing nodes with platform IT interconnectivity

Work Environment:

• Location: On-Site - 540 National Business Parkway, Annapolis Junction, MD
• Travel Requirements: Minimal
• Working Hours: Standard

Minimum Qualifications:

• Requires Top Secret clearance with SCI
• Must have a DoD 8570.1-M/8140 IAT Level III certification (SecurityX (CASP), GCIH, CISA, CISSP) compliant
• Strong background in networking (TCP/IP, firewalls, VPNs), cloud security (AWS/Azure), Kubernetes, and DevSecOps
• Deep understanding of NIST SP 800-161, NIST RMF, FedRAMP, Common Criteria, ATO package development, and cybersecurity compliance (STIGs)
• Hands-on experience managing and deploying Tenable Nessus, CyberArk, Trellix, Splunk Enterprise, VMware vSphere, GitLab, Microsoft Windows Server, Red Hat Enterprise Linux and Ubuntu Linux
• Experience with scripting and automation with Powershell, Python, Bash and Ansible
• Proven experience in leading projects and mentoring junior ISSE's
• Present technical briefings to leadership

Basic Compensation: $110,000-$140,000 (This range is for Washington, DC only)

The offered rate will be based on the selected candidate’s knowledge, skills, abilities and/or experience and in consideration of internal parity.

Additional Compensation:

KBR may offer bonuses, commissions, or other forms of compensation to certain job titles or levels, per internal policy or contractual designation. Additional compensation may be in the form of sign on bonus, relocation benefits, short-term incentives, long-term incentives, or discretionary payments for exceptional performance.

Belong, Connect and Grow at KBR

At KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team’s philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver – Together.

KBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.