Lead Principal Core Infrastructure Engineer

Oracle Cloud Infrastructure (OCI) is seeking a Lead Principal Core Infrastructure Engineer to join our Networking organization, focusing on DDoS and Network Security. In this strategic role, you will help architect, build, and enhance solutions to safeguard the reliability and availability of OCI’s global cloud services. The ideal candidate excels at collaborating across teams, driving technical direction, and delivering large-scale, robust software systems in a cloud environment.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 us.fitly.work or by calling View phone number on us.fitly.work 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: $146,300 to $306,400 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 - IC5Key Responsibilities:Lead the design, development, and continuous improvement of distributed systems that enhance the security and resiliency of OCI’s networking services.Drive the development of L4 and L7 protection services—including DDoS mitigation and Web Application Firewall (WAF)—to protect against a wide array of network and application-layer threats.Analyze trends in network architecture and the threat landscape to inform system design and enhancements.Drive improvements in system scalability, reliability, and operational efficiency.Collaborate with partners across product, security, operations, and engineering to deliver high-visibility solutions.Define, document, and share architectural approaches, technical best practices, and operational processes.Provide mentorship to engineers and help elevate technical standards across the organization.Foster a culture of innovation, quality, and continuous improvement across all aspects of the product lifecycle.Requirements:Bachelor’s degree or higher in Computer Science, Engineering, or a related technical field.Significant experience (typically 12+ years) in building, scaling, and operating distributed systems or cloud infrastructure.Working knowledge of network technologies or security principles, with an interest in advancing expertise.Strong programming skills in one or more major languages (such as Go, Java, C++, Python), especially in the context of systems engineering.Ability to navigate ambiguity, drive complex technical initiatives, and collaborate effectively across teams.Demonstrated experience producing high-quality designs and technical documentation.Excellent problem-solving, communication, and collaboration skills.Preferred Qualifications:Experience developing security, networking, or large-scale cloud solutions.Familiarity with automation, monitoring, and operational tooling for highly available services.Experience with open source technologies or community contributions.Demonstrated contributions to the technology field (e.g., publications, open source, patents).Full timePosting Date: 2026-07-27