Tech Stack
- Python / Rust
- PyTorch / JAX
- CUDA / CUTLASS / Triton / NCCL
- Kubernetes
- SGLang: This team is actively working on one of the most popular open-source inference engines, SGLang. You have the opportunity to work on open-source projects.
Location
The role is based in the Bay Area [San Francisco and Palo Alto]. Candidates are expected to be located near the Bay Area or open to relocation.
Focus
- Optimizing the latency and throughput of model inference.
- Building reliable and performant production serving systems to serve billions of users.
- Accelerating research on scaling test-time compute and rollout in reinforcement learning training.
- Model-hardware co-design for next-generation architectures
Ideal Experiences
- Worked on system optimizations for model serving, such as batching, caching, load balancing, and parallelism.
- Worked on low-level optimizations for inference, such as GPU kernels and code generation.
- Worked on algorithmic optimizations for inference, such as quantization, distillation, and speculative decoding, and low-precision numerics.
- Worked on large-scale inference engines or reinforcement learning frameworks.
- Worked on large-scale, high-concurrent production serving.
- Worked on testing, benchmarking, and reliability of inference services.
Interview Process
After submitting your application, the team reviews your CV and statement of exceptional work. If your application passes this stage, you will be invited to a 15-minute interview (“phone interview”) during which a member of our team will ask some basic questions. If you clear the initial phone interview, you will enter the main process, which consists of four technical interviews:
- Coding assessment in a language of your choice.
- Systems hands-on: Demonstrate practical skills in a live problem-solving session.
- Project deep-dive: Present your past exceptional work to a small audience.
- Meet and greet with the wider team.
Our goal is to finish the main process within one week. All interviews will be conducted via Google Meet.
Annual Salary Range
$180,000 - $440,000 USD
Benefits
Base salary is just one part of our total rewards package at xAI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.
