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MLS Engineer
Hybrid (Colorado Springs, CO)
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MLS Engineer

Stephenson Stellar Corp
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Hybrid (Colorado Springs, CO, USA)
$138,600 - $276,000 yearly
Jun 25, 2026
Full time

In this position you will serve as an MLS Engineer for the Mission Performance & Security Systems Directorate. The candidate will serve as a senior technical expert responsible for the design, development, integration, and sustainment of secure data-sharing solutions across multiple classification domains within U.S. Department of Defense (DoD) and Intelligence Community (IC) environments. This role focuses on the hands-on engineering and deployment of cross domain solutions (CDS) and multi-level security architectures, enabling controlled, policy-compliant data transfer between networks of differing classification levels. The position requires deep technical expertise, operational experience in classified environments, and the ability to lead the implementation of high-assurance security solutions supporting mission-critical systems. Additional responsibilities include: (1) Design, develop, and implement cross domain solutions (CDS) to enable secure data exchange between networks of varying classification levels; (2) Architect and maintain multi-level security (MLS) systems, including definition of data flows, trust boundaries, and enforcement mechanisms; (3) Integrate CDS capabilities into complex systems such as ISR platforms, sensing systems, communications architectures, and data environments; (4) Implement and configure data filtering, validation, tagging, and releasability controls in accordance with security and mission requirements; (5) Support real-time and near-real-time data transfer across domains while ensuring system performance and reliability; (6) Troubleshoot and resolve issues related to CDS functionality, data flow, and system interoperability in operational environments; (7) Ensure compliance with NIST Risk Management Framework (RMF) and applicable DoD/IC cross domain policies; (8) Develop and maintain documentation required for Authority to Operate (ATO) processes, including system security plans and risk assessments; (9) Coordinate with government stakeholders, Authorizing Officials, and cross domain authorities during design reviews and accreditation activities; (10) Provide technical leadership and mentorship to engineering teams supporting MLS and CDS efforts; and (11) Develop end-to-end MLS architectures across space sensor payloads (EO/IR, RF sensing), spacecraft bus and onboard processing, ground entry points, mission processing, and dissemination layers.

Job ID

2026-0014

Security Clearance

SECRET
About Stephenson Stellar Corp

Stephenson Stellar Corporation's mission is to create ready and relevant advances at the nexus of space and cyberspace by delivering leading edge solutions that assure the integrity and resiliency of our nation’s strategic space capabilities.

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