Senior Cybersecurity Engineer***Belong. Connect. Grow. with KBR!*****KBR is seeking a highly motivated Senior Cybersecurity Engineer to support modernization and integration of the Protected Key Management Architecture (PKMA) capability within the Enterprise SATCOM System.** The successful candidate will provide systems engineering, acquisition, cryptographic key management, requirements, integration planning, and stakeholder coordination support across government, contractor, and national-level crypto stakeholders. This role supports ongoing PKMA modernization activities, FOPR/SOW documentation, COMSEC/TRANSEC risk mitigation, dependency planning, testing, certification, and ESS integration milestones.**Why Join Us?*** **Innovative Projects:**KBR’s work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions.* **Collaborative Environment:**Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace.* **Impactful Work:**Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense.**Key Responsibilities*** Lead systems engineering activities supporting PKMA modernization and integration into ESS.* Develop and review technical requirements, Statements of Work, Technical Requirements Documents, Interface Control Documents, and acquisition documentation.* Support Fair Opportunity Proposal Request, Request for Information, and other acquisition package activities for the PKMA modernization contract.* Analyze vendor or contractor inputs and provide clear technical recommendations to government and program leadership.* Develop technical roadmaps and dependency analyses supporting PKMA development, integration, testing, certification, and deployment.* Coordinate cryptographic key management requirements across ground, terminal, payload, and space segment stakeholders.* Support COMSEC/TRANSEC planning, test strategy, certification planning, and integration activities.* Develop PKMA-related risk assessments, mitigation plans, and executive-ready briefings.* Participate in key management, cyber engineering, SATCOM, and security working groups.* Coordinate with NSA, Space Systems Command, mission partners, contractors, and system developers.* Support technical baseline reviews including SRR, SFR, PDR, CDR, and integration readiness activities.* Prepare concise status updates, program briefings, and decision-support materials for leadership.**Work Environment:*** **Location:** On-site* **Travel Requirements:** Minimal* **Working Hours:** Standard**Qualifications:****Required:*** **Active Top Secret clearance required for this position*** Bachelor's degree in engineering, computer science, mathematics, physics, or related technical discipline* 7+ years of systems engineering experience supporting DoD, Intelligence Community, or national security space programs* Experience with cryptographic systems, key management infrastructure, COMSEC, or TRANSEC operations* Experience developing technical requirements, SOWs, acquisition packages, and engineering documentation* Experience supporting large-scale system integration efforts* Strong technical writing and briefing skills* Proficient in Microsoft Office (Word, PowerPoint, Excel)**Preferred:*** Master's degree in engineering or related discipline* Experience with SATCOM, AEHF, ESS, EHF, or strategic communications systems* Knowledge of PKI, KMI, PKMA, or enterprise key management architectures* Experience supporting NSA-certified cryptographic systems* Familiarity with MBSE/CAMEO, DOORS, Jira, or engineering toolsets* Experience supporting acquisition strategy, source selection, and contract execution* Certification in systems engineering, such as INCOSE CSEP or ESEP* Certification such as CISSP, CEH* Requirements management* Technical baseline management* Interface development and ICD adjudication* Risk management* Digital engineering* Cybersecurity engineering* Executive communications* Cross-functional team leadershipThe PKMA modernization effort is a critical dependency for future ESS cryptographic capabilities, including key delivery, ECU integration, COMSEC/TRANSEC operations, and enterprise SATCOM resilience. The selected candidate will directly influence technical direction, acquisition execution, integration success, and risk posture for this modernization effort.**Basic Compensation:** $149,400 - $186,700 in El Segundo CA