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Cybersecurity Architect, (TS/SCI), CI Poly

K2 Space· National Security Programs
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Los Angeles, CA$170k - $230kFull-timePosted 2mo ago

About the role

Experienced Cybersecurity Architect to support DoD/IC classified programs, designing and implementing security architectures for unclassified, CUI, and classified information systems within K2 Space environments. Serve as technical authority, shaping enterprise security strategy, guiding RMF-based risk management, and ensuring compliance with government cybersecurity frameworks.

Responsibilities

  • Architect end-to-end cybersecurity solutions for systems across K2 Space, DoD and IC environments, ensuring alignment with mission requirements and compliance mandates.
  • Lead the design and support the accreditation of systems under the RMF, including the preparation and review of SSPs, SARs, and POA&Ms.
  • Define and enforce security architecture baselines, reference models, and standards across multi-domain and cross-domain environments.
  • Conduct threat modeling, vulnerability assessments, and security architecture reviews for new and existing classified systems and programs.
  • Collaborate with program managers, system engineers, and government stakeholders to integrate security requirements into SDLC processes.
  • Evaluate emerging threats, technologies, and adversarial TTPs; recommend architectural countermeasures and mitigations.
  • Support Cross Domain Solution (CDS) design, evaluation, and accreditation efforts with relevant authorities.
  • Provide technical guidance on zero trust architecture (ZTA) implementation within classified environments.
  • Develop and present security architecture documentation, briefings, and recommendations to senior leadership and others.
  • Mentor junior security team members and serve as SME on classified cybersecurity matters.

Qualifications

  • Active Top Secret / SCI (TS/SCI) security clearance with Counterintelligence (CI) Polygraph — must be in-scope and adjudicated prior to start.
  • 8 or more years of cybersecurity experience directly supporting the DoD, IC, or other U.S. government national security programs.
  • Demonstrated expertise in cybersecurity architecture design for classified and sensitive government networks and information systems.
  • Deep familiarity with NIST SP 800-53, ICD 503, CNSSI 1253, DODI 8510.01 (RMF), and related DoD/IC cybersecurity policy frameworks.
  • Experience designing or operating within multi-classification-level environments and managing cross-domain data transfer requirements.
  • Proficiency in network security architecture, including segmentation, firewall policy, PKI/encryption, and intrusion detection/prevention.
  • Strong understanding of endpoint security, IAM, and PAM in government environments.
  • Proven ability to lead technical security architecture efforts and communicate findings to both technical and executive audiences.

Skills

Required:RMF/Risk ManagementThreat Modeling
Nice to have:Zero Trust Architecture

Benefits

  • Comprehensive benefits package including paid time off, medical/dental/vision coverage, life insurance, paid parental leave, and many other perks.
Last updated Aug 26, 2026. Interested? Apply on the company site.

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