Senior Core Infrastructure Engineer (C Programming Language, Network Routing)

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About the team

OCI virtual networking is a foundational layer for customers running mission-critical enterprise and AI workloads. The team builds gateway dataplanes that move and enforce traffic at high throughput and low latency while maintaining strong tenant isolation, predictable behavior under failure, and operational simplicity. You will work close to the hardware and operating system while collaborating across control-plane, networking, security, observability, and operations teams.

Description

Oracle Cloud Infrastructure is seeking Senior Infrastructure Engineers to design, build, and operate the high-performance virtual networking dataplane that underpins OCI gateway services. In this role, you will develop major C and C++ features for packet processing, routing, network address translation, gateway functionality, and security-policy enforcement. You will optimize CPU and memory efficiency, concurrency, latency, and throughput for production systems operating at cloud scale.

You will partner with networking, control-plane, infrastructure, security, and operations teams to build fault-tolerant distributed systems with strong tenant isolation and safe deployment practices. The role includes end-to-end feature ownership: architecture, implementation, testing, staged rollout, observability, on-call support, incident response, and continuous operational improvement. Experience with fast dataplane technologies such as DPDK, VirtIO, eBPF, XDP, SR-IOV, SmartNICs, or userspace packet-processing frameworks is especially valuable.

Responsibilities

Key Responsibilities:

Dataplane Scalability and Performance

• Implement and enhance C and C++ components for OCI's virtual networking dataplane, including routing, network address translation, network gateways, and security-policy enforcement.
• Build packet-processing features that support scalable, multi-tenant cloud networking with guidance from senior engineers.
• Profile and optimize CPU utilization, memory usage, concurrency, latency, and throughput in large-scale production environments.
• Contribute to fast dataplane development using technologies such as DPDK, VirtIO, Linux networking, SR-IOV, SmartNICs, or userspace packet-processing frameworks.
• Develop and maintain unit, integration, system, performance, and scale tests.
• Participate in design and code reviews, applying established patterns for performance, correctness, and maintainability.

Reliability and Availability

• Implement fault-tolerant networking components that handle failures, maintenance events, and software updates with minimal customer impact.
• Contribute to resilient designs using health checks, retries, timeouts, graceful draining, failover, and recovery mechanisms.
• Develop fault-injection, brownout, and recovery tests to validate service behavior.
• Support staged deployments, automated validation, monitoring, rollback, and recovery procedures.

Observability and Operational Excellence

• Build and maintain service metrics, alarms, dashboards, telemetry, canaries, and operational health checks.
• Diagnose Linux, networking, performance, and production issues using logs, metrics, packet captures, traces, profilers, and debugging tools.
• Create and improve runbooks, diagnostic tools, and automation for common operational issues.
• Participate in the team's on-call rotation, incident response, root-cause analysis, and corrective-action follow-through.

Security and Multi-Tenant Isolation

• Apply established security and tenant-isolation practices to dataplane and gateway features.
• Help identify and remediate security, reliability, and operational risks.
• Maintain technical documentation and follow applicable security, compliance, and change-management processes.

Automation and Change Management

• Maintain automation and infrastructure-as-code used to build, test, deploy, and operate the service.
• Implement automated checks and safeguards for configuration changes, software releases, and rollback procedures.
• Own assigned features through implementation, testing, deployment, production validation, and support.

Core Responsibilities:

Planning and Execution

• Plan and deliver assigned work with limited supervision, identifying dependencies and risks early.
• Manage priorities and adjust execution as requirements, timelines, or production needs change.
• Communicate progress, blockers, and technical decisions clearly.

Collaboration and Partnership

• Work closely with networking, control-plane, infrastructure, security, and operations teams.
• Participate in design reviews, code reviews, incident reviews, and knowledge-sharing activities.
• Document technical decisions and contribute to team standards and best practices.

Problem Solving

• Independently troubleshoot standard and moderately complex issues using established engineering practices.
• Analyze data from logs, metrics, traces, packet captures, and tests to identify root causes.
• Escalate complex cross-service issues appropriately while contributing to their resolution.

Continuous Learning and Improvement

• Build expertise in C/C++, systems programming, cloud networking, Linux, and high-performance dataplane technologies.
• Seek feedback and apply it to improve technical and operational skills.
• Identify practical opportunities to improve testing, tooling, deployment, observability, and team workflows.

Qualifications

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 only

US: Hiring Range in USD from: $79,200 to $209,500 per annum. May be eligible for bonus and equity.

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 opinion

2. Short term disability and long term disability

3. Life insurance and AD&D

4. Supplemental life insurance (Employee/Spouse/Child)

5. Health care and dependent care Flexible Spending Accounts

6. Pre-tax commuter and parking benefits

7. 401(k) Savings and Investment Plan with company match

8. 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 holidays

10. 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 leave

12. Adoption assistance

13. Employee Stock Purchase Plan

14. Financial planning and group legal

15. Voluntary benefits including auto, homeowner and pet insurance

The role will generally accept applications for at least three calendar days from the posting date or as long as the job remains posted.

As part of Oracle's onboarding process and consistent with applicable law, US-based employees are required to complete identity verification, which involves the collection and processing of their biometric information. Accommodations to this requirement may be granted following an individualized assessment.