Senior Staff Performance Engineer

Job overview

The Senior Staff Performance Engineer role requires daily onsite presence in San Jose, CA. The posting lists a base pay range of $189,000–$301,000 per year across U.S. locations and functions; pay varies by location and qualifications. The role supports Samsung Semiconductor’s AGI Computing Lab, which works on scalable platforms for demanding AI and machine-learning workloads. The engineer characterizes production-like AI workloads and identifies performance bottlenecks across software and hardware layers. The work informs platform design and technical direction through workload analysis, benchmarking methods, and communication with hardware architects, systems engineers, and software researchers.

What you'll do

• Build and operate AI environments reflecting production workloads
• collect workload traces, runtime telemetry, and performance data
• compare workloads across platforms and identify compute, memory, communication, and scheduling bottlenecks
• communicate findings through reports, presentations, and architecture reviews
• define performance evaluation methods and benchmarking standards
• set technical direction for workload characterization.

What we're looking for

Skills & competencies

senior staff performance engineer

ai workloads

performance engineering

agi computing lab

san jose ca

samsung semiconductor

$189k–$301k base pay range

distributed inference

gpu profiling

nvidia nsight

pytorch and vllm

daily onsite

Work arrangement

• Weekend coverage required

Benefits & perks

• Medical, dental, and vision
• 401(k)
• 4+ weeks of paid time off plus holidays and sick leave
• family-care support
• emotional wellness resources
• onsite café and gym
• flexible-work benefits.

Why this role

Requires a relevant degree or equivalent experience and 10+ years with a bachelor’s, 8+ years with a master’s, or 5+ years with a PhD in a related area. Relevant experience includes AI systems, distributed systems, performance engineering, or high-performance computing.

About the employer

Samsung Semiconductor is hiring for this role. Industry: Semiconductor and Related Device Manufacturing. Sector: 33.