Software Engineer - Voice Model
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 build speech-data pipelines, train and post-train speech-language models, and evaluate voice-model quality. You will integrate models into real-time applications and support deployment of reliable, low-latency multilingual voice experiences.
Requirements
- Expert Python proficiency for AI/ML systems.
- Experience processing large-scale datasets with Spark and Ray.
- Proficiency pre-training and post-training speech-language models with JAX or PyTorch.
- Experience with supervised fine-tuning and reinforcement learning.
- Ability to run evaluation pipelines with objective metrics, human preference studies, factuality checks, and A/B testing.
- Experience with large-scale distributed training and inference systems on Kubernetes.
Responsibilities
- Design and execute large-scale speech-data curation and processing pipelines.
- Train and post-train speech-language models.
- Build and iterate an evaluation framework for voice-model performance.
- Integrate voice models into applications and real-time environments.
- Define spoken-interaction specifications and support deployment.
Benefits
- Equity
- Medical coverage
- Vision coverage
- Dental coverage
- 401(k) retirement plan
- Short-term disability insurance
- Long-term disability insurance
- Life insurance
- Discounts and perks