Information Systems Security Engineer (ISSE) with Security Clearance

Precise Systems delivers integrated, mission-ready solutions that advance warfighter readiness and strengthen our nation's most critical defense programs. Through the power of our combined capabilities, we provide deep expertise in Advanced Engineering;
Digital Transformation;
Electromagnetic Warfare;
Interactive Training & Simulation;
Physical Sciences Research;
Platform Lifecycle Support; and Foreign Military Sales. Unified by decades of trusted performance and expanded through strategic growth, our team applies innovative technologies, engineering rigor, and customer-focused execution to solve complex challenges and accelerate mission success. Guided by our commitment to partnership, precision, and performance, we deliver the scalable solutions and technical excellence our customers depend on-today and into the future.

We are seeking an Information Systems Security Engineer (ISSE) to support our customer in Crane, Indiana. This position provides cybersecurity engineering support for tactical information systems, applications, networks, and platform systems supporting Expeditionary Electromagnetic Warfare Division efforts. The ISSE will support the engineering, documentation, assessment, and authorization activities required to establish and maintain compliant, operationally effective systems in accordance with DoD and Navy cybersecurity requirements.

This role is ideal for a candidate who understands both the technical and procedural sides of cybersecurity. The successful candidate will help engineer and document security controls, support RMF package development and submission, assess vulnerabilities, manage POA&Ms, and sustain systems through authorization and continuous monitoring. The position requires strong judgment, initiative, organization, and the ability to operate effectively in a fast-paced environment with sensitive information and mission-critical systems.

This role requires in-person support. Duties:

• Provide cybersecurity engineering support for tactical information systems that are not owned by NSWC Crane or NMCI, including applications, networks, and platform systems.
• Develop, update, and maintain cybersecurity documentation required for the certification, accreditation, authorization, and sustainment of information systems. Core artifacts may include the System Security Plan (SSP), Risk Assessment Report (RAR), Security Assessment Plan (SAP), Security Assessment Report (SAR), POA&M, Incident Response Plan (IRP), Contingency Plan, SOPs, Remediation Plans, and Configuration Management Plan (CMP).
• Support the Risk Management Framework (RMF) process and demonstrate working knowledge of the RMF submission flow, including:
• System categorization and boundary definition
• Security control selection and tailoring
• Control implementation and technical evidence collection
• Package development and submission for assessment
• Support to security control assessment and adjudication
• Development and maintenance of POA&Ms
• Authorization package updates in support of ATO decisions
• Transition to continuous monitoring and reauthorization support as required.
• Perform technical efforts required for the certification, accreditation, and authorization of tactical systems, including vulnerability assessment using Tenable Nessus, SCAP Compliance Checker (SCC), STIG evaluation, and manual checklist development.
• Analyze system, network, database, cloud, and application security posture and recommend cost-effective safeguards and remediation strategies.
• Proactively create, monitor, and update POA&Ms to ensure identified weaknesses are tracked and resolved within required timelines.
• Assist with development and maintenance of the information system's authorization to operate (ATO) and overall compliance posture.
• Maintain hardware and software inventories, support configuration management, and assess impacts of proposed changes to maintain security posture.
• Support incident response and contingency planning activities, including documentation updates and technical coordination.
• Ensure systems are maintained in DITPR-DON and that software applications are properly registered in DADMS, as applicable.
• Support continuous…