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2,565 performance engineer jobs at 960 companies in California

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Performance Engineer
San Jose, California, United States
$135k-$170k/yr OnsiteFull Time
Astera Labs
Astera LabsNASDAQ: ALAB: Designs connectivity solutions for cloud and AI infrastructure.
2+ YOEBachelor's in engineering/computer science, experience benchmarking and characterizing GPU cluster performance, proficiency with performance tooling and scripting (Python); strong systems and networking knowledge.
NVBandwidth, NCCL, Confluence, CUDA, MPI, Python, COSMOS, NVLink, PCIe, Ethernet, UALink, UEC
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2mo
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Performance Engineer, Inference Systems
San Francisco or New York City or Seattle
$350k-$850k/yr OnsiteFull Time
Anthropic
Anthropic: Developing safe and reliable artificial intelligence systems.
Hands-on performance engineering with Python, data analysis, and cross-layer investigations; strong communication of quantitative results.
Python, SQL, Pandas
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2mo
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Thermodynamics Performance Engineer
El Segundo, California, United States
$140k-$155k/yr OnsiteFull Time
Arbor Energy
Arbor Energy: Building advanced power systems for clean, carbon-negative electricity.
4+ YOEBachelor's in engineering; 4+ years in cycle performance analysis; thermo/fluid/heat transfer expertise; 1D dynamic models; Python; MATLAB/Simulink/Modelica; team collaboration.
Python, MATLAB, Simulink, Modelica
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1mo
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Algorithm Performance Engineer
San Jose, California, United States
$95k/yr OnsiteFull Time
Visionix
Visionix: Manufactures and distributes ophthalmic diagnostic and lens finishing systems.
Bachelor's in health information & data science, biomedical engineering, or related field; responsibilities include performance verification, debugging, prototype development, and supporting clinical validation under SOP and GCP standards.
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3w
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Senior Performance Engineer
San Jose, California, United States
$138k-$206k/yr OnsiteFull Time
Samsung Semiconductor
Samsung SemiconductorKorea Exchange: 005930: Designs and manufactures memory chips, processors, and sensors.
0+ YOEAdvanced degree in CS/CE/EE or equivalent experience; strong LLM systems and NVIDIA GPU performance knowledge; experience profiling AI workloads with Nsight tools; proficiency in Python and C++; experience with PyTorch, DeepSpeed, Ray, or similar.
Nsight Systems, Nsight Compute, Python, C++, PyTorch, vLLM, SGLang, TensorRT-LLM, DeepSpeed, Ray, Megatron-LM
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2mo
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Aero Performance Engineer
Poway or California
$106k-$190k/yr HybridFull Time
General Atomics
General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.
8+ YOEAdvanced engineering degree or equivalent experience, 8+ years experience (senior level), MATLAB proficiency, aerodynamics and performance analysis background, ability to obtain DoD Secret clearance, strong verbal and written communication.
MATLAB, AVL, XFOIL, MSES, OpenVSP, OpenMDAO, SUAVE, RDS, Aviary, NASTRAN, LEAPS, FLOPS, Python, Java, C/C++
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3mo
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HPC & AI Senior Performance Engineer
Bloomington or Spring or San Jose
$120k-$275k/yr RemoteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Providing global edge-to-cloud infrastructure and IT solutions for businesses.
7+ YOEMaster’s or PhD in CS/engineering/math; 7+ years HPC performance analysis; strong communication; US citizenship.
OpenMP, MPI, CUDA, HIP, NCCL/RCCL, HPL, HPCG, OSU-MPI, Performance profiling tools, GPU architectures, Multiprocessor, CPU/GPU
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1mo
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System Performance Engineer
San Diego, California, United States
$99k-$149k/yr OnsiteFull Time
Qualcomm
QualcommNASDAQ: QCOM: Designs and manufactures semiconductors and wireless telecommunications products.
1+ YOEOptimize and validate system power, performance, and thermal behavior for Snapdragon chipsets; profile and analyze concurrent use-cases; root-cause triage; mentor engineers. Requires programming (Python, C/C++), SoC knowledge, and post-silicon experience.
Python, C, C++, Vulkan, OpenGL, DX12, CUDA, Android, Linux, Windows
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2mo
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Founding Engineer - ML Performance
San Francisco, California, United States
$250k-$395k/yr RemoteFull Time
uRun
uRun: Infrastructure cloud for interactive, stateful AI inference.
Hands-on CUDA, GPU optimization, and large-scale model inference experience; strong systems and performance engineering skills.
CUDA, GPU, NCCL, PyTorch, Triton, TensorRT, CUDA kernels
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1w
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CoDesign & NextGen Performance Engineer
Sunnyvale or Toronto
OnsiteFull Time
Cerebras Systems
Cerebras SystemsNasdaq: CBRS: Manufactures specialized computer chips designed for AI.
3+ YOE3+ years experience in computer architecture/performance, strong analytical skills, low-level deep learning math exposure, experience with simulators, kernel optimization, and performance profiling; comfortable with C++ and Python.
C++, Python
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1mo
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Performance Verification Engineer
Mountain View, California, United States
$200k-$350k/yr OnsiteFull Time
DensityAI
DensityAI: Designing custom AI hardware accelerators for large language models.
8+ YOEMaster's degree plus ~8 years experience in performance validation/verification of complex SoCs, performance modeling, debugging and correlation, tool-flow ownership, and collaboration with RTL designers and architects.
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3mo
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Performance Modeling Engineer ~2
San Francisco or Seattle
$266k-$445k/yr HybridFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
1+ YOE1-2 years in software engineering or performance modeling; strong programming; knowledge of system architecture; able to work across hardware and software teams.
Python, Simulation tools, Modeling frameworks
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3mo
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Sr Performance Validation Engineer
Sunnyvale, California, United States
$183k-$248k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
7+ YOE7+ years in UVM/C/SystemC and scripting; pre-silicon validation for SoCs/processors; BS in electrical/computer engineering; proficiency with RTL simulators, emulation, and performance tools.
RTL simulators, Emulation platforms, Performance analysis tools, Python, C/C++, SystemVerilog, VCS, Questa, Xcelium, Palladium, Zebu
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2mo
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Performance Engineer
Palo Alto, California, United States
OnsiteFull Time
RadixArk
RadixArk: Building scalable open-source infrastructure for AI training and inference.
Strong systems engineering in performance-critical software; GPU/distributed systems; profiling tools; Python and C++; CUDA/Triton/ROCm/XLA familiarity; LLM inference concepts; ability to debug across software, hardware, and infra layers; strong communication.
CUDA, Triton, Pallas, ROCm, XLA, Python, C++
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2mo
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Brake Performance Engineer
Foster City or Irvine
$115k-$130k/yr OnsiteFull Time
ALTEN
ALTENEuronext Paris: ATE: Provides engineering and technology consulting services to industrial clients.
5+ YOEBS or MS in Mechanical, Electrical, or Automotive Engineering; 5-8 years brake development/vehicle testing; strong braking system knowledge; travel within continental US.
CANalyzer, INCA, MDA, MATLAB/Simulink, Racelogic Vbox
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3w
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SSD Performance Analysis Engineer
San Jose, California, United States
$90k-$100k/yr OnsiteFull Time
SK hynix Memory Solutions America
SK hynix Memory Solutions AmericaKorea Exchange: 000660: Develops semiconductor controllers and firmware for enterprise data storage.
2+ YOEMaster's in Computer Science/Electrical Engineering or equivalent; 2+ years hands-on SSD experience; proficiency with Python and C/C++; ability to design and execute SSD performance test plans and analyze results.
Python, C, C++
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1w
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Operations Performance Engineer
San Francisco or New York City or Denver or Austin or Calgary or Toronto
$189k-$202k/yr RemoteFull Time
Intersect
IntersectNASDAQ: GOOGL: Develops-located data centers and renewable energy infrastructure.
5+ YOEBachelor's in engineering,5–10 years supporting utility-scale solar/BESS or grid operations,ERCOT market and telemetry knowledge,SCADA/EMS experience,Power Factors experience,site visit capability.
Power Factors, SCADA, Energy Management Systems (EMS), OSIsoft PI, Tesla Megapack
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2mo
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Product Performance Engineer
San Jose, California, United States
$120k-$300k/yr OnsiteFull Time
Hark
Hark: Independent AI focused on multimodal intelligent systems
5+ YOE5+ years analyzing workload behavior and modeling system performance; BS in CS/EE; profiling/benchmarking/tracing tools; Python and systems language experience; translate analytics into architectural recommendations.
Python, C++, Rust, Profiling Tools, Benchmarking Tools, Tracing Tools
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3mo
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System Performance Engineer
Los Angeles, California, United States
OnsiteFull Time
AFL
AFL: Global manufacturer of fiber optic products and network services.
4+ YOEBS in engineering or science plus 1-3 years telecom experience (or 3-5 years with an Associate’s) ; proficient in MS Office; strong analytical, problem-solving, and communication skills; able to travel regionally; eligible to work in the United States.
Microsoft Office, Microsoft Project, Microsoft Visio
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1w
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HPC Performance Engineer
Oregon or California or Texas or Massachusetts
$152k-$242k/yr RemoteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs graphics processing units and artificial intelligence hardware.
5+ YOEBS/MS or equivalent,5+ years programming experience,expertise in Fortran/C/C++,OpenACC/OpenMP/MPI/CUDA,performance analysis and tuning,linear algebra and numerical methods,excellent communication.
NVHPC, Fortran, C, C++, OpenACC, OpenMP, MPI, CUDA, assembly language
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