Mission Security Engineer
About The Position
As a Mission Security Engineer, you will be a critical technical expert securing national security space systems, classified ground-based Command and Control (C2) infrastructure, and space vehicle hardware and software. This is a hands-on role that blends deep technical Information Technology (IT) expertise with cybersecurity and compliance acumen. We are looking for candidates with deep expertise in at least one of the following disciplines: Cybersecurity compliance (NIST 800-53 controls implementation and validation), DevSecOps, Software Development, Operating systems & hosting (Windows / Linux), Cloud infrastructure deployment (AWS/Azure), Containerization infrastructure, Kubernetes, EKS, AKS, Boundary protection, Endpoint Detection and Response / Extended Detection and Response (EDR/XDR), Security Information and Event Management / Security Operations Center (SIEM/SOC) deployment. You will work as part of a highly capable, cross-functional team to design, deploy, measure, and document classified systems from the ground up — navigating dynamic, cross-program priorities that change daily. You will be responsible for ensuring our systems meet the most rigorous federal security standards while accelerating delivery of critical warfighting capabilities to Department of War and Intelligence Community customers. This is an ideal role for a security-focused technologist with deep IT or cybersecurity technical skills who is eager to take novel, innovative approaches to cybersecurity and compliance. If you're energized by the challenges of securing mission-critical systems that protect lives and national interests, join our team.
Requirements
- 3–5 years of combined experience in a technical IT field, security engineering, DevSecOps, and/or software development
- Active Top Secret clearance with SCI eligibility required
- DoD 8140 IAT Level II certification (Security+, CySA+, or equivalent) required
- Experience implementing or utilizing NSA Type 1 cryptographic solutions in operational systems
- Experience with RMF processes and achieving ATOs for complex systems
- Working knowledge of NIST SP 800-53 security controls and how they map to technical implementation
- Hands-on experience implementing STIGs at the OS, container, platform, and application level
- Familiarity with space system architectures including satellite operations, ground segments, and TT&C systems
- Bachelor's degree in Computer Science, Cybersecurity, Engineering, or related field (or equivalent experience)
Nice To Haves
- Active TS/SCI clearance with polygraph
- Direct experience securing C2 systems, space systems, or other DoD mission systems
- Experience supporting DoD or IC customers through ATO, re-ATO, or continuous authorization
- Direct experience within IL-5 or IL-6 impact level cloud environments
- Knowledge of cloud security control inheritance and shared responsibility models within DoD IL-5 or IL-6 environments
- Familiarity with Cross Domain Solutions (CDS), data guards, or other information flow control technologies
- Experience with FedRAMP High, CMMC, or DoD IL-5/IL-6 authorizations
- Experience integrating security tooling (e.g., SIEMs, vulnerability scanners, audit/logging systems) into development workflows
- Understanding of zero trust architectures and modern identity solutions applied to classified environments
Responsibilities
- Implement end-to-end security controls for ground-based C2 systems, spacecraft hardware and software platforms, spanning firmware, embedded systems, cloud-native applications, and operational technology
- Ensure security architectures enable effective monitoring, logging, and incident response without compromising operational tempo
- Implement security controls and zero trust architecture throughout the product development lifecycle, minimizing RMF findings through strong upfront engineering
- Implement and validate DISA STIG requirements at the OS, container, platform, and application layers within products as they are developed
- Integrate RMF controls into CI/CD pipelines through DevSecOps practices including Infrastructure as Code (IaC), automated security scanning, and continuous monitoring tooling
- Identify and remediate findings from STIGs, vulnerability scans, penetration testing, and SCA activities to maintain ATO posture
- Support all RMF Steps 1–6, with emphasis on control implementation, assessment preparation, and remediation for DoD and IC programs
- Ensure compliance with NIST 800-53, CNSSI 1253, ICD 503, JSIG, and other applicable frameworks for National Security Systems (NSS) handling classified information up to TS/SCI
- Support cloud Provisional Authorization (PA) and inherited control models across classified cloud environments (e.g., Impact Level (IL)-6 Cloud Service Providers (CSPs))
- Contribute technically to security artifacts including SSPs, SAPs, SARs, and POA&Ms
- Serve as a credible technical voice with government ISSOs, ISSEs, and third-party assessors during ATO and reauthorization activities
Benefits
- Health, Dental, Vision, HRA/HSA options, PTO and paid holidays, 401K, Parental Leave
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
