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Software Engineer - Voice Model

xAI · Palo Alto, CA

CHECKED 14H AGO

Frontier labonsite$150k–$450k
Apply on the lab’s site ↗

At a glance

Highlights

  • Build the world's best voice AI for natural, low-latency spoken interactions.
  • Own full training pipeline from data curation to pre-training and post-training.
  • Integrate voice models into real-time apps for global-scale deployment.

What they offer

  • Equity
  • Comprehensive medical, vision, and dental coverage
  • 401(k) retirement plan
  • Short and long-term disability insurance
  • Life insurance
  • Discounts and perks

Ideal candidate

Execution-oriented builder who thrives in small, high-caliber teams and loves crafting delightful conversational experiences. Curious, proactive, and driven by excellence in voice AI.

Requirements

  • Python expert with deep proficiency in writing clean, efficient code for AI/ML systems.
  • Hands-on experience processing large-scale datasets using tools like Spark and Ray for cleaning, augmentation, and feature extraction.
  • Proficiency in pre-training and post-training speech-language models using JAX/PyTorch, including supervised fine-tuning, reinforcement learning, and optimizations for accuracy, factuality, natural spoken style, detail, and multilingual fluency.
  • Ability to set up and run rigorous evaluation pipelines: objective metrics, human preference studies, content factuality checks, and iterative A/B testing to drive model improvements.
  • Experience building or working with large-scale distributed training and inference systems on Kubernetes.
  • Proactive, self-driven attitude — ready to grind in a fast-paced, high-caliber team to deliver outstanding voice AI experiences.

Lab profile

About xAI

Builds AI systems to understand the universe and advance human knowledge.

Known for

  • Engineering excellence focus
  • Large-scale data center operations
More about xAI →
Apply on the lab’s site ↗