Staff Engineer in Test

Job Description We are seeking a highly skilled and technically strong Staff Engineer in Test to lead system level quality engineering efforts for networking, security and other enterprise readiness aspects of Infinia, DDN’s large‑scale distributed data platform. In this role, you will be a senior technical authority responsible for planning and implementing test strategies and test infrastructures to ensure correctness, stability, performance, and resilience of Infinia’s distributed architecture. You will work across core subsystems—including the I/O path, memory management, networking stack, scheduling layers, multi‑tenant services, and NVMe‑backed storage patterns—to ensure platform quality at scale. This is a hands‑on, high‑impact IC role for someone who can solve hard problems, automate at scale, leverage AI to improve velocity and elevate quality engineering across the organization. Key Responsibilities Design detailed test strategies and validation plans for networking and security features for distributed system Create scalable, automated test suites that validate multi‑tenant behavior, concurrency, data consistency, and system‑level performance. Build and maintain robust automation using tools such as Pytest and container‑based environments leveraging Docker, Jenkins, Kubernetes. Develop reusable automation templates, harnesses, and utilities to accelerate test creation and reduce engineering overhead. Construct and execute performance tests covering I/O throughput, system latency, NVMe access patterns, concurrency limits, and long‑running workload stability. Use advanced tools (profilers, fuzzers, failure‑injection frameworks, trace analyzers) to uncover issues in distributed workflows. Analyze CPU, memory, disk, and network utilization to diagnose performance bottlenecks and identify regression risks. Work closely with architects, developers, release engineering, DevOps, and customer engineering to drive quality‑first design decisions. Participate in feature design reviews, ensuring testability, observability, and resilience are built into system components. Lead root cause analysis (RCA) for complex issues and propose long‑term improvements to engineering practices and platform stability. Produce clear, detailed test plans, automation guides, design‑review feedback, and quality metrics reports. Contribute to the development and maintenance of internal QA standards, best practices, and onboarding materials. Required Qualifications 10+ years of experience in software quality engineering, with strong focus on distributed systems, system‑level testing, or infrastructure platforms. Hands‑on expertise in test automation using Python, Bash, and modern CI/CD tooling (Git, Jenkins, etc.). Strong understanding of: Distributed concurrency File systems and I/O stack behavior Storage performance analysis (NVMe, SPDK) Networking, tracing, and system observability Experience with large‑scale performance testing, stress testing, and reliability validation. Demonstrated skill in diagnosing complex system issues across logs, traces, network captures, and profiling tools. ISTQB or equivalent certification preferred. Preferred Qualifications Experience validating large‑scale data platforms, storage engines, or distributed scheduling systems. Experience with AI technologies in context of quality engineering, such as issue triaging, test generation, automation. Familiarity with observability technologies such as OpenTelemetry, Grafana, Prometheus. Background in compliance or security testing (e.g., access control, backup/restore workflows, Section 508/HIPAA/PCI). Contributions to open‑source test frameworks or distributed systems validation tools. Salary $145,000 - $185,000 Equal Opportunity DataDirect Networks (DDN) is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity, gender expression, transgender, sex stereotyping, sexual orientation, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law. #J-18808-Ljbffr DDN