Member of Technical Staff - ML Performance

Veeda AI; Zürich; On-site; CHF 120,000 - 160,000; Full time

Job summary

Veeda AI in Zürich, Switzerland is building the next generation of multimodal world models for Physical AI. The role focuses on optimizing multi-node video world model training and inference, managing tensor, context, and expert parallelism across PyTorch FSDP2 and Megatron-Core, not default options.

You will profile end-to-end latency, GPU utilization, memory pressure, and kernel efficiency using PyTorch Profiler, Nsight Systems, and torch.utils.benchmark, then improve throughput via

Qualifications

• Hands-on experience with PyTorch and large-scale parallelism stacks on multi-node clusters.

Responsibilities

• Own step time and model FLOPs utilization for multi-node video world model training.
• Profile end-to-end latency, GPU utilization, memory pressure, and kernel efficiency for inference throughput.
• Tuning CUDA and Triton kernels to improve throughput and scaling across GPUs.
• Develop and integrate fault-tolerant and asynchronous checkpointing.
• Tune NCCL collectives and overlap across NVLink domains.
• Diagnose silent data corruption and stuck kernels, enabling fast recovery.

Skills

Python

C++/CUDA

PyTorch

FSDP2

Megatron-Core

TorchTitan

DeepSpeed

Nsight Systems

torch.compile

CUDA Graphs

Education

Bachelor's degree in Computer Science/Engineering or related field

Tools

Nsight Systems

PyTorch Profiler

Triton

CuTe-DSL

Torch.compile

CUDA

Job description

About Us

Veeda AI is building the next generation of multimodal foundation world models for Physical AI. We're a small, fast-moving team of engineers and researchers from leading AI labs, tackling some of the most challenging problems at the intersection of AI, robotics, and embodied intelligence. If you're excited about pushing the boundaries of what's possible with Physical AI, you'll have the opportunity to make an outsized impact from day one.

Responsibilities

• Distributed Training Throughput: Own step time and model FLOPs utilization for multi-node video world model training, choosing the tensor, context, and expert parallelism mix in PyTorch FSDP2 and Megatron-Core rather than inheriting a default.


• Inference Throughput Optimization: Profile end-to-end latency, GPU utilization, memory pressure, and kernel efficiency with PyTorch Profiler, Nsight Systems, Nsight Compute, and torch.utils.benchmark, then improve throughput through torch.compile/Inductor, CUDA Graphs, mixed and low precision, quantization, operator fusion, and multi-GPU serving.


• Precision & Numerical Stability: Take BF16, FP8, and NVFP4 recipes from running to converging on Blackwell, chasing scaling-factor and accumulation bugs into the video tokenizer and VAE layers where the activation outliers actually live.


• Kernels & Compilation: Write and tune the CUDA and Triton kernels PyTorch does not give us, driving FlashAttention-4, FlexAttention, and torch.compile integration so quadratic attention over long video sequences stops setting step time.


• Communication & Overlap: Tune NCCL collectives and compute/communication overlap across NVLink domains and the fabric, using the NCCL flight recorder to turn a watchdog timeout into a named rank and collective, not a restart.


• Fault Diagnostics & Recovery: Build the detection layer for silent data corruption (SDC), stuck CUDA kernels, and "card-freeze" hangs, plus asynchronous and tiered checkpointing that makes an interruption cost minutes rather than a day.

Requirements

• Bachelor's degree or equivalent hands-on experience in Computer Science, Computer Engineering, or a related technical field.


• Deep hands-on experience with PyTorch and at least one large-scale parallelism stack (FSDP2, Megatron-Core, TorchTitan, or DeepSpeed) on real multi-node jobs, not single-node approximations.


• Fluency in Python and C++/CUDA with the ability to predict where a kernel will stall from its memory access pattern before profiling.


• Experience profiling live training and inference runs with Nsight Systems or the PyTorch profiler and translating traces into quantifiable step-time or MFU improvements.


• Expertise in at least one of low-precision numerics, kernel authoring, or large-run fault diagnosis, and credibility in the others.

Nice to Have

• Experience optimizing training or inference workloads across very large GPU clusters, including topology-aware placement, scaling efficiency, performance isolation, and diagnosing failures that emerge only at fleet scale.


• Experience writing Triton, CUTLASS, or CuTe-DSL kernels, or contributing to open-source kernel libraries.


• Experience implementing context or sequence parallelism for long-horizon video or high-token-count models.


• Experience running or porting large training workloads on AMD GPUs (ROCm) or Google TPUs (JAX/XLA).


• Experience building fault-tolerant training with elastic world size, dynamic node re-queueing, or asynchronous distributed checkpointing.


• Experience optimizing generative inference for interactive rollouts, including few-step samplers, distillation, and KV or latent caching.


• Publications or presentations on machine learning systems, compilers, or high-performance kernels.