Insider Threat Program Senior System Engineer

Job Description

Description

The Digital Modernization Sector at Leidos currently has an opening for a Senior System Engineer supporting the HEITS Contract as part of the Department of Homeland Security (DHS) Insider Threat Program (ITP). This is an exciting opportunity to use your experience to design, develop, and advance the ITP cybersecurity infrastructure baseline. The ITP mission is to identify insider threats to the department by utilizing advanced analytics, monitoring, and data correlation which in turn help address and eliminate potential threat actors from compromising the DHS mission in safeguarding the homeland.

The selected candidate will be responsible for the following :

Creating new design architectures, Engineering and deploying the enhancements to support the ITP mission. Developing and maintaining an architectural roadmap across all ITP infrastructure functions to guide the future of the ITP program. Evaluate all ITP changes to assess for functional, security, and cost risks. Support all engineering functions in helping to design new solutions and strategies for supporting ITP functionality. Support all documentation to effectively capture the configuration baseline. Support performance management to ensure key metrics are tracked and captured reflecting the efficacy and performance of the enterprise. Develop chart decks and artifacts to support the customer in articulating the design and functional baseline of the ITP enterprise to stakeholders.

Basic Qualifications :

Bachelors degree and (15)+ years of prior relevant experience or Masters with (13) years of prior relevant experience

Strong Proficiency in operating systems : Windows Server, Linux (RHEL)

Experience with virtualization platforms : VMware,

Strong understanding of networking protocols (TCP / IP, DNS, DHCP, VPN, VLANs)

Familiarity with cloud platforms : AWS, Azure, GCP

Scripting and automation : PowerShell, Bash, Python, Terraform

Monitoring and logging tools : Splunk, Nagios, Prometheus, ELK Stack

Configuration management : Ansible, Puppet, Chef, JIRA

Backup and disaster recovery systems

Identity and access management (IAM), Active Directory, LDAP

Working knowledge of defense-in-depth principles, network / HW / SW security architecture, network topology, IT device integrity, and common security elements

Knowledge of NIST, STIGS, FISMA, or FedRAMP standards

Experience implementing STIGs and hardening systems

Familiarity with endpoint protection, SIEM integration, and vulnerability management

Understanding of zero-trust architecture and secure system design

Ability to obtain DHS EOD SCI

Preferred Qualifications :

Master’s degree from an accredited college or university in IT Management, Engineering, or related field

Proven experience (10+ years) in IT service delivery management

Experience with User Activity Monitoring products and platforms

Experience with Everfox High Speed Guard Platform

Experience with Cisco Networking Concepts

Experience with On Premise Systems Infrastructure

Experience with Oracle, Microsoft SQL Server, or PostgreSQL DBMS platforms

Come break things (in a good way). Then build them smarter.

We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”

Original Posting : October 2, 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 $148,850.00 - $269,075.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.