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Research Scientist / Engineer – Performance Optimization

Luma AI · Redwood City, CA, Remote, US, Remote, EU, New York, NY, Seattle, WA, London, UK · back to the listing

HR standards

58/100

needs work

Title ↔ description

79/100

solid

Reads as

Machine Learning Engineer

94% confident

What this role officially is

data scientist — ESCO, the EU occupation classification

Data scientists find and interpret rich data sources, manage large amounts of data, merge data sources, ensure consistency of data-sets, and create visualisations to aid in understanding data. They build mathematical models using data, present and communicate data insights and findings to specialists and scientists in their team and if required, to a non-expert audience, and recommend ways to apply the data.

Also known as: data scientists, data engineer, research data scientist, data expert, data research scientist

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What the listing never says

  • 17 bullet points. Long requirement lists deter qualified candidates, who read them as hard gates. Scope clarity
  • No section describes what the person would actually do. Scope clarity

The listing, marked up

Nothing in the wording of this listing tripped a check. The scores above still judge how complete and coherent it is.

You'll make Luma's multimodal models fast — profiling and optimizing GPU, CPU, and accelerator code so they train efficiently and deploy at scale without sacrificing quality. You'll write the kernels and operations that get the most out of the hardware.

This is deep performance work: fused kernels, tensor cores, Triton and CUDA, distributed multi-node deployment. It fits someone with expert GPU-optimization skills and a deep understanding of transformer internals. If you're not at home in CUDA, Triton, and profilers, this is the wrong depth.

What You'll Own

• Profile and optimize GPU/CPU/accelerator code for maximum utilization and minimal latency.

• Write high-performance PyTorch, Triton, and CUDA, dropping to custom operations when needed.

• Develop fused kernels and leverage tensor cores and modern hardware features across platforms.

• Optimize model architectures and implementations for distributed multi-node production deployment.

• Build performance monitoring and analysis tools and automation.

• Research and implement cutting-edge optimization techniques for transformer models.

First 90 Days

One way the first 90 could unfold.

• Days 1–30 — Immerse & Diagnose: Profile the current training and inference paths and find the biggest performance wins.

• Days 30–60 — Ship & Validate: Land a kernel or architecture optimization that measurably improves utilization or latency.

• Days 60–90 — Scale & Systemize: Build the monitoring and automation that keeps performance gains from regressing.

What You Bring

• Expert-level Triton/CUDA programming and GPU optimization.

• Strong PyTorch skills, including kernel development and custom operations.

• Proficiency with profiling tools (NVIDIA Nsight, torch profiler, custom tooling).

• Deep understanding of transformer architectures and attention mechanisms.

Nice to Have

• Experience with compilers and exporters (torch.compile, TensorRT, ONNX, XLA).

• Experience optimizing inference workloads for latency and throughput.

• Triton compiler and kernel fusion techniques.

• Knowledge of warp-level intrinsics and advanced CUDA optimization.

About Luma: Luma's mission is to build unified general intelligence that can generate, understand, and operate in the physical world. We believe multimodality is critical for intelligence — the next step beyond language models comes from vision. Luma is an equal opportunity employer.