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# Cross Domain Solutions Engineer (CDS)

- **Company:** Leidos Holdings, Inc.
- **Location:** St. Louis, MO, United States
- **Experience:** Expert
- **Salary:** $101,000.0 - $111,000.0
- **Contract:** Permanent contract
- **Skills:** Information Systems, Data Migration, Data Flow Control, Internet Protocol, Network Security, Operating System Security
- **Published:** August 30, 2026
- **Apply:** https://www.careerjet.com/jobad/us4d0f925743093e2382d5fe2dadb89d1f

## About the Role

Cross Domain Solutions Engineer (CDS)Cybersecurity Engineering Specialist III - Enterprise Cross-Domain SystemLocation: St. Louis, MO - on siteTime Type: Full time, ExemptClearance Required to Start: Active TS/SCI (U.S. citizenship required)Additional Requirement: Must be able to obtain and maintain a Government polygraph (post-hire requirement)Travel: Less than 10%, localSalary Range: $101,000 - $111,000 Moving data between security domains, safely, at enterprise scale.RISA is hiring a Cross Domain Engineer to provision customer dataflow in an Enterprise Cross-Domain System for an Intelligence Community customer. CDS is a small field and the work is genuinely hard: you own the design conversation with stakeholders, the implementation, and the health of the system once it is running. You will talk to the owner here, not a recruiting queue.What You Will DoCollect requirements from stakeholders and determine the best implementation approach.Schedule and run Technical Exchange Meetings, network security concepts.Nice to HaveHands-on with Cross Domain Solutions and operational support of CDS technologies on the NCDSMO-approved products list.About RISARolston Information Systems Assurance (RISA) is a Service-Disabled Veteran-Owned Small Business that has supported federal defense and intelligence cybersecurity missions for more than seventeen years. We are small on purpose: direct access to leadership, a real say in how the work gets done, and none of the layers that slow large primes down.BenefitsMedical, dental, and vision insurance; 401(k) and Roth; Paid Time Off; and 11 paid Federal Holidays.RISA is an Equal Opportunity Employer.

## Description

to whiteboard design and implementation detail.Coordinate implementation approach and timeline with technical and project management staff.Identify and remediate implementation conflicts across CDS technologies enterprise-wide.Respond to and resolve service outages, technical queries, and system issues.Run system checks across processes, services, network, and storage to assess overall health.Write the technical documentation and deliver the briefings that go with the work.What You'll BringU.S. citizenship and an active TS/SCI.Ability to successfully obtain and maintain a Government polygraph after hire.Education and experience, per the contract labor category criteria: Bachelor's degree in a field applicable to the position plus 6 years of relevant experience. Equivalents accepted - Master's plus 4, Associate's plus 8, or High School diploma/GED plus 10.DoD IAT Level II certification.Linux, with a working understanding of operating system security practices.TCP/IP networking and


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