Senior Software Engineer, Core Infrastructure

Oracle•Nashville, TN

24d•$79,200 - $209,500

About The Position

We’re seeking a Senior Software Engineer, Core Infrastructure to join our DNS Data Plane team. You’ll design, build, and operate high-performance, highly reliable DNS services that power critical infrastructure at global scale. This role focuses on performance-sensitive systems, distributed networking, and operational excellence—balancing correctness, latency, and resiliency.

Requirements

5+ years of operations engineering experience in SaaS, cloud, or hybrid-cloud environments.
5+ years managing and operating large-scale, highly distributed service infrastructure.
3+ years of hands-on Linux experience.
Strong experience building and operating production-grade distributed systems and/or network services.
Proficiency in one or more of Go, C, Java, or Python, with the ability and interest to work across languages when needed.
Solid understanding of Linux systems, networking fundamentals—including TCP/UDP and sockets—concurrency, and performance profiling.
Demonstrated experience designing highly available systems and delivering safe production rollouts using practices such as canaries and feature flags.
Strong ownership mindset, with the ability to make sound technical decisions, navigate ambiguity, and drive complex problems through to durable resolution.

Nice To Haves

Deep DNS knowledge, including relevant RFCs, UDP/TCP DNS, EDNS(0), DNSSEC, caching behavior, zone transfers, rate limiting, and load balancing.
Experience with high-performance systems patterns such as epoll/kqueue, asynchronous I/O, low-lock or lock-free data structures, and packet processing.
Familiarity with DDoS mitigation, abuse protection, and traffic engineering for L4/L7 services.
Experience with containers and orchestration platforms such as Kubernetes, including service meshes and network policies where relevant.
Infrastructure-as-code experience, especially Terraform.
Strong testing discipline, including unit and integration testing, fuzzing, property-based testing, and chaos testing.
Experience operating mission-critical, 24/7 services.
Experience using AI-assisted development tools thoughtfully to accelerate coding, testing, debugging, and documentation while applying strong engineering judgment, ownership, code-quality, and security standards.

Responsibilities

Design and implement DNS data plane components across authoritative and recursive request paths, with a focus on low-latency, high-throughput processing.
Build services and libraries in Go, C, Java, and/or Python, selecting the right language and approach for each component’s performance and operational needs.
Optimize CPU, memory, and network I/O performance through efficient event loops, concurrency models, socket tuning, and profiling.
Own data plane components end to end: architecture, implementation, testing, safe rollout, observability, capacity planning, and ongoing operational health.
Develop and maintain metrics, logs, tracing, SLOs, dashboards, and practical on-call playbooks.
Improve reliability through fault-tolerant design, graceful degradation, safe deployment practices, and proactive capacity planning.
Collaborate with control plane, security, SRE, and operations teams to deliver end-to-end DNS platform improvements.
Participate in code reviews, architecture reviews, and technical leadership; mentor teammates and raise engineering standards.
Take ownership of production outcomes by proactively identifying and driving performance, reliability, security, and operational improvements.

Benefits

Medical, dental, and vision insurance, including expert medical opinion
Short term disability and long term disability
Life insurance and AD&D
Supplemental life insurance (Employee/Spouse/Child)
Health care and dependent care Flexible Spending Accounts
Pre-tax commuter and parking benefits
401(k) Savings and Investment Plan with company match
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.
11 paid holidays
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.
Paid parental leave
Adoption assistance
Employee Stock Purchase Plan
Financial planning and group legal
Voluntary benefits including auto, homeowner and pet insurance