Principal Core Infrastructure Engineer - Cross Domain Solutions

The engineer will help deliver reliable platforms that enable controlled information sharing between networks operating at different security levels. The ideal candidate has broad systems infrastructure experience, understands security-first engineering, and can troubleshoot complex interactions across compute, storage, networking, virtualization, identity, and cross-domain components. This person should be comfortable working in highly controlled environments, translating security requirements into practical designs, and collaborating with security, network, application, accreditation, and operations teams.Only Oracle brings together the data, infrastructure, applications, and expertise to power everything from industry innovations to life-saving care. And with AI embedded across our products and services, we help customers turn that promise into a better future for all. Discover your potential at a company leading the way in AI and cloud solutions that impact billions of lives.True innovation starts when everyone is empowered to contribute. That’s why we’re committed to growing a workforce that promotes opportunities for all with competitive benefits that support our people with flexible medical, life insurance, and retirement options. We also encourage employees to give back to their communities through our volunteer programs.We’re committed to including people with disabilities at all stages of the employment process. If you require accessibility assistance or accommodation for a disability at any point, let us know by emailing View email address on click.appcast.io or by calling View phone number on click.appcast.io in the United States.Oracle is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Oracle will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.Disclaimer:Certain U.S. based or U.S. customer or client-facing roles may be required to comply with applicable requirements, such as immunization/occupational health mandates, and/or drug testing requirements.Range and benefit information provided in this posting are specific to the stated locations onlyUS: Hiring Range in USD from: $114,600 to $234,600 per annum. May be eligible for bonus, equity, and compensation deferral.Oracle maintains broad salary ranges for its roles in order to account for variations in knowledge, skills, experience, market conditions and locations, as well as reflect Oracle's differing products, industries and lines of business.Candidates are typically placed into the range based on the preceding factors as well as internal peer equity.Oracle US offers a comprehensive benefits package which includes the following:1. Medical, dental, and vision insurance, including expert medical opinion2. Short term disability and long term disability3. Life insurance and AD&D4. Supplemental life insurance (Employee/Spouse/Child)5. Health care and dependent care Flexible Spending Accounts6. Pre-tax commuter and parking benefits7. 401(k) Savings and Investment Plan with company match8. Paid time off: Flexible Vacation is provided to all eligible employees assigned to a salaried (non-overtime eligible) position. Accrued Vacation is provided to all other employees eligible for vacation benefits. For employees working at least 35 hours per week, the vacation accrual rate is 13 days annually for the first three years of employment and 18 days annually for subsequent years of employment. Vacation accrual is prorated for employees working between 20 and 34 hours per week. Employees working fewer than 20 hours per week are not eligible for vacation.9. 11 paid holidays10. Paid sick leave: 72 hours of paid sick leave upon date of hire. Refreshes each calendar year. Unused balance will carry over each year up to a maximum cap of 112 hours.11. Paid parental leave12. Adoption assistance13. Employee Stock Purchase Plan14. Financial planning and group legal15. Voluntary benefits including auto, homeowner and pet insuranceThe role will generally accept applications for at least three calendar days from the posting date or as long as the job remains posted.Career Level - IC4Key ResponsibilitiesSystem Design & Architecture - Scalability, Reliability, and Performance:Design, deploy, configure, and maintain the infrastructure that hosts or integrates with Cross Domain Solutions.Integrate CDS technologies such as data diodes, guards, transfer solutions, access solutions, and protocol or content-filtering services.Develop technical designs, implementation plans, configuration standards, system diagrams, test procedures, and operational documentation.Build and design fault-tolerant components and systems capable of withstanding in-service updates by implementing redundancy, replication, and automatic failover mechanisms. Define scalability requirements for owned components and ensure design and implementation requirements are met. Define key performance indicators (KPIs) and telemetry to identify gaps or issues in running systems. Build and customize moderately complex dashboards, telemetry systems, and alerting mechanisms to proactively monitor components and system health.Implement data replication and synchronization techniques to maintain data integrity and availability.Compliance & Security:Support security assessment and authorization activities by implementing controls, producing technical evidence, and resolving findings.Apply system hardening guidance, configuration baselines, vulnerability remediation, patching, and lifecycle-management practices.Operational Troubleshooting & Incident Management:Troubleshoot complex issues across infrastructure, applications, networks, security controls, and CDS components.Monitor platform health, performance, capacity, and availability; identify risks before they affect mission services.Participate in incident response, root-cause analysis, change management, and problem-management activities.Serve in operational support rotations, providing guidance in incident response and root cause investigations.Automation & Change Management:Automate provisioning, configuration, compliance validation, and routine operational tasks where appropriate.Develop and maintain automation scripts and tools (e.g., Infrastructure as Code (IaC)) to manage cloud infrastructure. Create and adhere to change management plans for patching, updating, and rolling back applications, and begin designing systems and components to allow for automation of these processes.Plan and execute upgrades, migrations, capacity improvements, and technology refreshes with minimal operational disruption.Core ResponsibilitiesPlanning & Execution:Manage and coordinate moderately complex tasks, monitoring timelines and deliverables to ensure timely completion and adherence to requirements for a moderately-sized project or initiative. Efficiently delegate, monitor, and prioritize work across multiple projects, providing technical oversight and adjusting plans to address shifts in resources or timelines.Collaboration & Partnership:Collaborate across the organization to align expectations and achieve shared objectives. Leverage understanding of business leaders, stakeholders, and/or customers to ensure proposed solutions meet their needs. Support inclusivity by actively seeking and listening to diverse perspectives, ensuring others feel heard and respected.Work closely with cybersecurity, network engineering, enterprise architecture, application teams, vendors, and mission stakeholders.Provide technical guidance to other engineers and contribute to engineering standards and reusable solutions.Problem Solving:Identify and address moderately complex issues by analyzing a wide range of data and/or information to identify solutions in accordance with standard practices. Proactively escalate unresolved or critical issues with a thorough assessment and suggest potential solutions. Review, contribute to, and document problem solving strategies.Continuous Learning:Pursue learning opportunities to expand knowledge and skills and/or tools in new areas and stay abreast of the latest industry trends and best practices. Proactively seek and leverage ongoing feedback and training to improve skills. Coach and mentor junior team members, fostering continuous learning and knowledge sharing within and across teams.Continuous Improvement:Develop ideas, recommend updates, and/or collaborate on the implementation of improvements to increase the efficiency and effectiveness of processes, protocols, and workflows across teams. Solicit feedback from others on ideas for alternative approaches and methods for continued improvement.Performance and Development:Contribute to the talent development pipeline by participating in candidate interviews, assessing candidates, and providing hiring recommendations.Full timePosting Date: 2026-07-27