Senior Storage Systems Engineer - Linux Performance

ByteDance; San Jose (CA); On-site; USD 140,000 - 210,000; Full time

Job summary

ByteDance in San Jose is seeking a systems software engineer to analyze and optimize the Linux storage path for high-performance compute platforms. You will work across the block layer, NVMe, and device drivers, owning storage features from design through validation and deployment.

The role requires deep Linux I/O knowledge, strong C/C++ skills, and the ability to diagnose and resolve production issues with measurable improvements in latency, throughput, and data integrity.

Qualifications

• Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or equivalent practical experience.
• 3+ years of professional experience in C or C++ systems programming on Linux.
• Deep understanding of the Linux I/O path with hands‑on experience in at least two areas: NVMe, HDD, SATA SSD, AHCI, HBA, RAID, block layer, file systems, device drivers, memory management, caching, or I/O scheduling.
• Experience analyzing storage performance with reproducible benchmarks, tracing tools, telemetry, and statistically sound comparisons.
• Demonstrated ability to debug production failures across kernel, firmware, device, and service boundaries.
• Experience delivering well-tested software in collaboration with hardware, validation, and production teams.

Responsibilities

• Analyze the performance bottleneck and optimize Linux storage components across block I/O, file systems, NVMe, device drivers, caching, and relevant user-space services.
• Diagnose failures or exceptions across devices, PCIe, firmware, kernel, memory, networking, runtimes, and applications; drive root-cause analysis through verified resolution.
• Characterize workloads and use tracing, profiling, telemetry, logs, and hardware counters to identify latency, throughput, utilization, and scalability bottlenecks.
• Improve reliability through fault detection, isolation, retry, timeout, reset, failover, recovery, regression detection, and graceful degradation mechanisms.
• Own storage features from workload requirements and architecture through coding, integration, qualification, rollout, and sustained support.
• Create automated correctness, performance, endurance, stress, fault-injection, and compatibility tests for new hardware and software releases.
• Partner with device, firmware, kernel, server, network, validation, production, and workload teams to deliver storage capabilities into production.
• Review designs and code, document performance and recovery behavior, and contribute upstream where maintained community interfaces are the right solution.

Skills

C/C++ systems programming

Linux kernel I/O path

Storage performance analysis

Debug production failures

Software delivery with hardware teams

Benchmarking & telemetry

Education

Bachelor's degree or equivalent

Tools

Perf

Ftrace

Telemetry tooling

Job description

ByteDance in San Jose is seeking a systems software engineer to analyze and optimize the Linux storage path for high-performance compute platforms. You will work across the block layer, NVMe, and device drivers, owning storage features from design through validation and deployment.

The role requires deep Linux I/O knowledge, strong C/C++ skills, and the ability to diagnose and resolve production issues with measurable improvements in latency, throughput, and data integrity.