Systems Engineer II

Responsibilities Sabre Systems is seeking an experienced Systems Engineer II to support critical naval software delivery operations for our customer, the Naval Information Warfare Center Pacific (NIWC-PAC), located in San Diego, California. The selected candidate will play a vital role in supporting the Application Arsenal (AA), NIWC-PAC's enterprise-class software delivery platform that provides mission-critical capabilities to naval forces worldwide. The Application Arsenal serves as the Department of the Navy's premier enterprise distribution, update, and installation service for software deployed at the tactical edge. This sophisticated platform enables seamless Over-The-Air (OTA) software delivery from development environments to operational edge systems across diverse and challenging operational contexts. Current deployment targets include: Agile Core Services (ACS) - Navy's containerized application platform USMC Common Hosting Environment (CHE) - Marine Corps enterprise hosting infrastructure Overmatch Production Environment (OPE) - Joint All-Domain Command and Control (JADC2) ecosystem Five Eyes (FVEY) Partner Systems - Allied nation interoperable platforms Autonomous Vehicles - Unmanned systems across multiple domains Future Platforms - Additional systems projected for integration The selected candidate will be responsible for designing, implementing, and maintaining secure software delivery pipelines that operate across multiple classification domains and challenging operational environments. This role requires deep technical expertise in modern DevSecOps practices, containerized architectures, and defense‑specific platform integration. Key Responsibilities: Architectural Oversight - Designing, reviewing, and maintaining system architectures that support mission-critical defense applications Requirements Traceability - Establishing and maintaining bidirectional traceability between stakeholder requirements, system design, implementation, and verification activities System Integration - Integrating complex software components within secure, multi-domain environments while ensuring interoperability and compliance with defense standards Candidates must demonstrate hands‑on experience with ongoing software sustainment operations, including: Operational Support - Providing tier 2/3 technical support for production systems, including incident response, root cause analysis, and resolution Proactive Vulnerability Management - Identifying, assessing, prioritizing, and remediating security vulnerabilities in accordance with DoD cybersecurity timelines and risk management frameworks Technical Debt Remediation - Systematically addressing technical debt through refactoring, modernization, and optimization efforts to maintain system health and performance Candidates must demonstrate active, practical utilization of Agile frameworks tailored to defense software environments, including: Scrum - Sprint planning, daily standups, sprint reviews, and retrospectives Kanban - Continuous flow management, work-in-progress limits, and visual workflow optimization Scaled Agile Framework (SAFe) - Program Increment (PI) planning, Agile Release Trains (ARTs), and enterprise-level coordination Proven ability to execute production software deployments with: Zero or near-zero downtime deployment strategies (blue-green deployments, canary releases, rolling updates) Minimal operational disruption through comprehensive testing, rollback procedures, and change management Live production environment updates while maintaining system availability and mission readiness Continuous Monitoring - Implementing and maintaining security monitoring solutions (SIEM, log aggregation, intrusion detection) DISA STIG Compliance - Rigorous implementation and validation of Defense Information Systems Agency Security Technical Implementation Guides across all managed systems Information Assurance (IA) - Fulfilling stringent DoD cybersecurity mandates, including: Risk Management Framework (RMF) compliance Authority to Operate (ATO) support activities Security control implementation and assessment Vulnerability scanning and remediation tracking Qualifications Requirements: A bachelor’s degree in an engineering discipline from an accredited college or university. Minimum Three (3) years of demonstrated experience in systems engineering and continuous software sustainment, utilizing modern Agile methodologies to ensure seamless delivery and operational stability in production environments. Minimum Two (2) years of recent (within the last 5 years) demonstrated operational experience in enterprise server administration across heterogeneous operating system environments. Selected candidates must satisfy the requirements for 'Intermediate Proficiency' for the '451 - System Administrator' role as defined in the DoD 8140 Cyber Workforce Framework (formerly DoD 8570). Certification Requirements: Acceptable certifications include (but are not limited to): CompTIA Security+ CE CompTIA CySA+ GIAC Security Essentials (GSEC) GIAC Certified Incident Handler (GCIH) Certified Information Systems Security Professional (CISSP) Other DoD 8140-approved certifications at the Intermediate level Must have hands‑on experience with both: Linux Operating Systems - RHEL, CentOS, Ubuntu, or other enterprise distributions System installation, configuration, and hardening Package management, kernel tuning, and performance optimization Shell scripting and automation (Bash, Python, Ansible) Windows Server Operating Systems - Windows Server 2016/2019/2022 Active Directory, Group Policy, and domain services PowerShell scripting and automation IIS, DNS, DHCP, and other Windows-based services Demonstrated proficiency in deploying, configuring, and maintaining scalable virtualized environments, including: VMware vSphere - ESXi host management, vCenter administration, virtual machine lifecycle management Amazon Web Services (AWS) - EC2, VPC, S3, IAM, and other core services Other Virtualization Platforms - Hyper-V, KVM, or equivalent enterprise virtualization technologies Active DoD Top Secret/SCI clearance required (must be current and in-scope) Location: San Diego, California On-site support for Naval Information Warfare Center Pacific (NIWC-PAC) Compensation Statement At Sabre Systems, LLC, compensation is based on factors such as location, qualifications, experience, and contract-specific requirements; however, final compensation will be determined by individual qualifications and applicable contract terms. The general salary range for this position is as follows: $96,928.00 - $150,000.00 Refer & Earn: Employee Referral Bonus Eligibility A Level 3 Employee Referral Bonus applies to this requisition for qualifying referrals. At Sabre Systems, we value great talent and encourage our employees to refer exceptional candidates. Sabre Overview Sabre Systems, LLC, has been providing innovative technological solutions and services for Department of Defense, Federal Civilian, and commercial customers for more than 35 years. We support the ever‑evolving areas of advanced communication technologies, cyber, systems and software engineering, and digital transformation. With over three decades in business, Sabre Systems, LLC remains committed to our small business values and a people‑first philosophy. We foster a welcoming, inclusive culture that values diverse perspectives and encourages open communication. Our collaborative environment supports continuous learning and professional growth at all levels. We prioritize the health, well‑being, and success of our employees, offering comprehensive, evolving benefits designed to meet their diverse needs. Join us and be part of a thriving, people‑driven culture. We respect the unique perspectives that a diverse workforce of minorities, women, individuals with disabilities, and protected veterans brings not only to our company, but also to our customers.All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, gender identity and sexual orientation), national origin, age, disability or genetic information. EEO Minorities/Females/Disability/Veterans; VEVRAA Federal Contractor #J-18808-Ljbffr Sabre Systems Inc.