Architect Performance / GPU

**Job Description** Team Overview The Oracle Cloud Infrastructure (OCI) team is revolutionizing end-to-end data center planning, design, construction and operations by developing innovative software solutions. We aim to create a seamless bridge between digital and physical infrastructure, ensuring efficient management and automation. By standardizing data center building and implementing advanced analytics, we streamline data center design and construction, enabling rapid scalability. With a focus on automation and AI integration, OCI is poised to lead the industry in cost-effective, efficient data center management, making it accessible and adaptable for future technological advancements. Role Overview We are seeking a technically exceptional Performance Architect to lead, mentor, and enforce high standards in system performance engineering. As a hands-on technical leader, you will set methodology, drive diagnosis and solutions for performance bottlenecks at every layer (kernel, network, storage, runtime), and evangelize best practices across a highly visible, cross-organizational scope. Key Responsibilities - Deep Linux internals: scheduling, run queues & preemption, context switches, virtual memory (THP/hugetlbfs, page cache, reclaim/compaction), MMU/TLB shootdowns, softirqs/IRQs. - Networking expertise: TCP/UDP/QUIC, congestion control (e.g., CUBIC/BBR), socket options, NIC offloads (TSO/GSO/GRO/LRO), RSS/RPS/RFS, NAPI/busypoll, routing/VLAN/VXLAN basics. - Coding & code reading: strong C/C++, low-level concurrency, lock/contention analysis, cache-aware data structures, microbenchmarks; quickly read unfamiliar C and propose measurable improvements. - Linux tuning at scale: sysctls, cgroups v2, CPU/IRQ affinity, NUMA placement, huge-page policies, qdisc selection (fq/fq_codel), net/IO queue tuning. - Observability & instrumentation: low-overhead tracing; metrics/exemplars; flame-graph culture; Prometheus/OpenTelemetry/Grafana; actionable SLOaligned alerts. - Databases: query plans, indexing, buffer/cache behavior, lock/wait analysis, read/write amplification; OS/IO/network interactions. - Reliability via performance controls: admission control, backpressure, circuitbreaking, rate limiting; SLO/SLA thinking and tail-tolerance. - Impact communication: crisp RCAs with before/after metrics, clear tuning guides/playbooks; ability to influence and coach across teams. Basic Requirements - 15+ years of professional experience in software development, with strong expertise in system design, distributed systems, and automation platforms. - 10+ years of experience specifically building and delivering software solutions for data center environments, including DCMI, BMS, and data center automation. - Proven track record of architecting large-scale, mission-critical systems with high availability and performance. - Strong knowledge of modern programming languages (e.g., Java, C++, Go, Python) and cloud-native technologies (containers, Kubernetes, service mesh). - Hands-on experience with APIs, integration frameworks, and microservices architectures. - Deep understanding of monitoring, telemetry, and control systems used in data centers. - Strong communication skills with the ability to influence stakeholders and present to executives. - Experience working in global, cross-functional organizations with complex data center environments. Preferred Requirements - Knowledge of infrastructure-as-code, DevOps pipelines, and automated deployment strategies. - Familiarity with large-scale cloud provider environments. - Advanced degree in Computer Science, Electrical Engineering, or related field **Responsibilities** Key Responsibilities - Deep Linux internals: scheduling, run queues & preemption, context switches, virtual memory (THP/hugetlbfs, page cache, reclaim/compaction), MMU/TLB shootdowns, softirqs/IRQs. - Networking expertise: TCP/UDP/QUIC, congestion control (e.g., CUBIC/BBR), socket options, NIC offloads (TSO/GSO/GRO/LRO), RSS/RPS/RFS, NAPI/busypoll, routing/VLAN/VXLAN basics. - Coding & code reading: strong C/C++, low-level concurrency, lock/contention analysis, cache-aware data structures, microbenchmarks; quickly read unfamiliar C and propose measurable improvements. - Linux tuning at scale: sysctls, cgroups v2, CPU/IRQ affinity, NUMA placement, huge-page policies, qdisc selection (fq/fq_codel), net/IO queue tuning. - Observability & instrumentation: low-overhead tracing; metrics/exemplars; flame-graph culture; Prometheus/OpenTelemetry/Grafana; actionable SLOaligned alerts. - Databases: query plans, indexing, buffer/cache behavior, lock/wait analysis, read/write amplification; OS/IO/network interactions. - Reliability via performance controls: admission control, backpressure, circuitbreaking, rate limiting; SLO/SLA thinking and tail-tolerance. - Impact communication: crisp RCAs with before/after metrics, clear tuning guides/playbooks; ability to influence and coach across teams. Disclaimer: **Certain US customer or client-facing roles may be required to comply with applicable requirements, such as immunization and occupational health mandates.** **Range and benefit information provided in this posting are specific to the stated locations only** US: Hiring Range in USD from: $136,600 to $338,500 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 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. Career Level - IC6 **About Us** As a world leader in cloud solutions, Oracle uses tomorrow's technology to tackle today's challenges. We've partnered with industry-leaders in almost every sector-and continue to thrive after 40+ years of change by operating with integrity. We know that true innovation starts when everyone is empowered to contribute. That's why we're committed to growing an inclusive workforce that promotes opportunities for all. Oracle careers open the door to global opportunities where work-life balance flourishes. We offer competitive benefits based on parity and consistency and 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 [email protected] or by calling +1 888 404 2494 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.