Senior Core Infrastructure Engineer

** Job 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.

+…