Senior Software Engineer

Senior Software Engineer

We're seeking a Senior Software Engineer 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.

Key Responsibilities

• Design and implement DNS data plane components (authoritative/recursive paths as applicable), focusing on low-latency and high-throughput request processing.
• Build services and libraries in Go, C, Java, and/or Python (language choice depends on component and performance needs).
• Optimize performance across CPU, memory, and network I/O (e.g., event loops, concurrency models, socket tuning).
• Develop and maintain observability (metrics, logs, tracing), SLOs, and on-call operational playbooks.
• Improve system reliability through fault-tolerant design, graceful degradation, and capacity planning.
• Collaborate with control plane, security, and SRE/operations teams to deliver end-to-end DNS platform improvements.
• Participate in code reviews, architecture reviews, and technical leadership/mentoring.

Required Qualifications

• Strong experience building production-grade distributed systems and/or network services.
• Proficiency in one or more of: Go, C, Java, Python, with the ability to work across languages.
• Solid understanding of Linux systems, networking fundamentals (TCP/UDP, sockets), concurrency, and performance profiling.
• Demonstrated experience designing systems with high availability and safe rollout practices (e.g., canaries, feature flags).

Desired Skills / Nice to Have

• DNS expertise: RFCs, UDP/TCP DNS, EDNS(0), DNSSEC, caching behaviors, zone transfers, rate limiting, load balancing.
• Experience with high-performance patterns: epoll/kqueue, async I/O, lock-free/low-lock data structures, packet processing.
• Familiarity with DDoS mitigation, abuse protection, and traffic engineering in L4/L7 services.
• Experience with containers and orchestration (e.g., Kubernetes) and service mesh/network policies (where relevant).
• Infrastructure-as-code experience, especially Terraform.
• Strong testing discipline: unit/integration tests, fuzzing, property-based testing, chaos testing.
• Experience operating mission-critical services in a 24/7 environment.

What Success Looks Like

• You deliver measurable improvements in latency, throughput, and reliability.
• You help evolve the platform with clean architecture, strong operational readiness, and secure-by-design practices.
• You raise team standards through mentorship and pragmatic engineering leadership.

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: $79,200 to $178,100 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. Career Level - IC3

About Us

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 accommodation-request_mb@oracle.com 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.