Sepio Security Engineer

We are seeking a highly skilled and motivated Sepio Engineer to join our cybersecurity team. In this pivotal role, you will be responsible for designing, implementing, and maintaining security measures, with a specific focus on leveraging the Sepio platform for asset visibility and rogue device mitigation. You will play a key part in safeguarding our organization's physical and digital assets from evolving cyber threats by ensuring comprehensive device visibility and policy enforcement.

Primary Responsibilities:

The Sepio Engineer will be responsible for designing, implementing, and maintaining security measures, with a specific focus on leveraging the Sepio platform for asset visibility and rogue device mitigation. The Engineer will play a key part in safeguarding our organization's physical and digital assets from evolving cyber threats by ensuring comprehensive device visibility and policy enforcement.

• Sepio Platform Management: Design, deploy, configure, and optimize the Sepio Asset Risk Management (ARM) solution to identify, detect, and handle all peripheral devices within the infrastructure.

• Rogue Device Mitigation: Develop and implement robust policy enforcement mechanisms to automatically detect and block unauthorized or rogue hardware devices based on physical layer data characteristics.

• Security Architecture: Collaborate with IT and network engineering teams to integrate security controls into the overall system architecture, ensuring a defense-in-depth strategy.

• Vulnerability & Risk Assessment: Conduct thorough risk assessments and vulnerability analyses to identify potential security weaknesses, prioritizing findings for remediation and recommending mitigation strategies.

• Monitoring & Incident Response: Monitor security systems for irregular behavior and participate in incident response activities, including investigation, containment, and recovery efforts related to hardware and network anomalies.

• Policy Development: Develop, document, and maintain security policies, procedures, and standards to ensure compliance with industry regulations and best practices.

• Collaboration & Training: Work closely with cross-functional teams (e.g., Product, Support, Engineering) and provide guidance and training to staff on security best practices and the effective use of security tools.

• Documentation and reporting along with presentation, teamwork and DHS wide collaboration are among the expected duties and mission of the task order

• Define system security & design requirements to meet FISMA and FedRAMP compliance standards

• Provide follow-up reports (technical findings, feedback, resolution steps taken) for Root Cause analysis, engineering technical assessment and process improvement initiatives

Basic Qualifications:

Education: A Bachelor's degree in Computer Science, Information Technology, or related field and 8-12 years of experience. Additional experience may be considered in lieu of a degree

Experience: 3+ years of experience in system security engineering, network security, or a related field, with hands-on experience in security technologies such as firewalls, IDS/IPS, and endpoint protection solutions.

Technical Skills: Strong knowledge of security principles, best practices (NIST, ISO 27001), and networking concepts/protocols (TCP/IP, VLANs, VPNs).

Problem-Solving: Excellent analytical and problem-solving skills, with the ability to troubleshoot complex issues in both on-premise and cloud deployments.

Communication: Strong written and verbal communication skills, with the ability to convey complex security concepts to technical and non-technical stakeholders.

Preferred Qualifications:

• Experience working with Nucleus or TVM

• Experience working in AWS and Azure

• Experience working with CrowdStrike or RelativityOne is a plus

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

November 24, 2025

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $104,650.00 - $189,175.00

The Leidos pay range for this job level is a