Sr. Model Engineer, Voice
SpaceXAI builds frontier AI models and products including the Grok conversational assistant and a multimodal developer API.
Funding history
About SpaceXAI
SpaceXAI is a US-based AI company focused on accelerating scientific discovery and understanding the universe through reasoning, voice, image, video, and generative AI systems. Formerly xAI, it was acquired by SpaceX effective February 2, 2026, while continuing to operate the x.ai site and services.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design, build and run the software systems behind Grok Voice. You will build distributed data pipelines for audio, optimize distributed training in JAX and PyTorch, create evaluation and experimentation systems, integrate voice models into production real-time services, and profile and optimize performance across training and inference.
Requirements
- Bachelor's degree in computer science, software engineering, computer engineering, electrical engineering, or another engineering discipline
- Experience writing production-quality code in Python, PyTorch, JAX, Rust, or C++
- 2+ years of experience working with large scale voice related products
- Preferred: Kubernetes distributed training and inference experience
- Preferred: expert-level Python
- Preferred: Spark and Ray experience
Responsibilities
- Design, build and maintain large-scale distributed audio data pipelines
- Build and optimize distributed training infrastructure for speech-language models in JAX and PyTorch
- Build automated evaluation and testing systems and experimentation infrastructure
- Integrate voice models into production applications and real-time services and own deployment
- Profile and optimize system performance across training and inference
Benefits
- Equity
- Comprehensive medical, vision, and dental coverage
- 401(k) retirement plan
- Short & long-term disability insurance
- Life insurance
- Discounts and perks
