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Inworld AI Logo Inworld AI · IT - Software Development

Staff / Principal AI Engineer

United States, Mountain View 260000.00 - 385000.00 USD / Year · Job Posted February 13, 2026
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Job Description

Voice is one of the key interfaces humans will interact with AI at scale. To make this reality, we are building the engine for the next generation of AI-driven software. Our primary focus is pushing the boundaries of speech modeling (STT & TTS). We approach this by researching and utilizing ML ideas that allow us to achieve state-of-the-art results.

Job Responsibility

  • Researching, building, optimizing, and deploying the production ML systems that thousands of developers integrate with their systems
  • Focusing on the difficult research and engineering problems of building the engine for the next generation of AI-driven software

Requirements

  • A PhD in a relevant technical field, or a BA/BS degree with equivalent research and/or engineering experience
  • 5+ years of combined experience in software development (e.g. with Python or C++) and applied ML engineering
  • Demonstrated experience applying or researching Machine Learning in one or more of the following domains: Speech or video processing
  • Natural Language Processing (NLP)
  • Action planning
  • Strong foundation in data structures, algorithms, and neural network architectures
  • Proficiency with ML frameworks such as PyTorch

Nice to have

  • A passion for learning and staying up-to-date with the latest advancements in ML/Voice AI research and its applications
  • Ability to work collaboratively in a fast-paced environment with shifting priorities
  • Familiarity with pre-training, fine-tuning, RLHF and evaluation of large language and speech models
  • Knowledge of working with embedded systems and/or running ML on edge devices
  • Strong background in mathematics and/or physics

What we offer

  • bonus
  • equity
  • benefits
  • relocation assistance
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