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
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:October 2, 2025For 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.
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.
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Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
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