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Active1w ago

Senior/Staff Software Engineer, ML Training Optimization

Zoox·📍 Foster City, California, United States

Employment

FULL TIME

Work mode

On-site

Experience

7+ years

Salary

$254K – $350K/yr

Role overview

Job description

Zoox is on a mission to reimagine transportation and build ground-up autonomous robotaxis that are safe, reliable, clean, and enjoyable for everyone. We’re still early in deploying on public roads, so this is a great time to join and have a significant impact. The ML Platform team enables innovation in large-scale Foundation models, VLMs, and VLAs to make autonomous driving as seamless as possible. The OpportunityAre you excited to own ML training optimization at Zoox and make the models that power autonomous driving train faster, cheaper, and at greater scale? You’ll set technical direction for distributed training, parallelism strategies, mixed-precision training, and RL on SOTA accelerators, especially for multi-modal VLA and VLM models. You’ll partner with all Autonomy teams (Perception, Prediction, Planner, Simulation, Collision Avoidance) and act as a force multiplier for our internal customers, while mentoring engineers and shaping the team’s roadmap as we expand into new ML domains. If you want to learn more about our stack behind autonomous driving, please lookhere. If you want to learn more about our ML Infrastructure, here is one of ourpast talks at re:Invent. In this role, you will:
  • Lead the design, implementation, and operation of training performance optimizations (data/tensor/pipeline parallelism, mixed precision, gradient checkpointing, GPU kernels) to scale VLM, VLA, and Foundation model training.
  • Own the technical strategy and multi-quarter roadmap for RL framework and RL performance optimization for driving foundation models.
  • Drive profiling and root-cause analysis of throughput bottlenecks across the compute, compiler, framework, and cluster-networking stack.
  • Partner with ML researchers, data engineers, and hardware engineers to define requirements and make architectural decisions for large-scale training infrastructure.
  • Build custom kernels and benchmarks that track and validate performance gains across the stack.
  • Mentor engineers and raise the team’s technical bar through design reviews and best practices.
Qualifications
Note: You do not have to meet all the requirements below to be considered for this position:
  • 7+ years of total experience, including 4+ years on large-scale model training platforms, with a record of leading projects end to end.
  • Deep experience with distributed training frameworks (Megatron-LM, TorchTitan) and efficiently utilizing GPU/accelerator clusters at scale.
  • Experience with RL frameworks (Verl/MILES) and algorithms (GRPO, PPO).
  • Experience with collective communication libraries (e.g., NCCL) and optimizing communication/compute overlap in multi-node training.
  • Strong command of profiling tools (NVIDIA Nsight, PyTorch Profiler, or XLA/JAX profiling) to find and resolve training bottlenecks.
  • Proficiency in Python or C++.
  • Experience with ML compilers, performance tooling, or hardware/software co-design (GPU/TPU/accelerator architectures).
  • Ability to influence across teams and communicate technical tradeoffs to both researchers and engineers.
About Zoox Zoox is developing the first ground-up, fully autonomous vehicle fleet and the supporting ecosystem required to bring this technology to market. Sitting at the intersection of robotics, machine learning, and design, Zoox aims to provide the next generation of mobility-as-a-service in urban environments. We’re looking for top talent that shares our passion and wants to be part of a fast-moving and highly execution-oriented team. Follow us on LinkedIn Accommodations If you need an accommodation to participate in the application or interview process please reach out to accommodations@zoox.com or your assigned recruiter. A Final Note: You do not need to match every listed expectation to apply for this position. Here at Zoox, we know that diverse perspectives foster the innovation we need to be successful, and we are committed to building a team that encompasses a variety of backgrounds, experiences, and skills.

About this listing

  • Listed from Zoox's careers site via Lever · last confirmed on the source 23 Oct 2026
  • Posted 16 Oct 2026

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What they are looking for

Skills & requirements

Department · Software

Hiring company

Zoox

Manufacturing

Zoox is a purpose-built autonomous vehicle designed for riders, not drivers. Learn more about the Zoox robotaxi and the future of ride-hailing.

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