Staff / Principal Research Scientist - Switzerland

About the Position

Staff / Principal Research Scientist - Switzerland

Inworld is a research lab of top researchers and engineers, building the world’s top-ranked realtime voice models. Today our models are the #1 ranked realtime voice models in the world. They are used to power the largest consumer-facing AI applications available, across categories like health, fitness, learning, therapy, companions, customer experience, and media; representing 100s of millions of end users.

We’ve raised more than $125M from Lightspeed, Section 32, Kleiner Perkins, Microsoft’s M12 venture fund, Founders Fund, Meta, and Stanford, among others. Our technology has powered experiences from companies such as NVIDIA, Microsoft Xbox, Niantic, Logitech Streamlabs, Wishroll, Little Umbrella, and Bible Chat. We’ve also been recognized by CB Insights as one of the 100 most promising AI companies globally and have been named one of LinkedIn’s Top 10 Startups in the USA.

Responsibilities

• Contribute to the development of state-of-the-art voice models
• Work on research and development of state-of-the-art models, optimizing realtime inference, and creating best-in-class APIs and products
• Collaborate with cross-functional teams to engage users through AI applications

Requirements

• Experience:
  • Foundation models: training, new architectures, RL, reward modeling, scaling
  • Evaluation: benchmarks, eval loops, quality measurement, LLM-as-judge, failure analysis
  • Frontier topics: multimodal models, agents, tool use, test-time compute, world models
  • Published research at ICML, ICLR, NeurIPS, EMNLP, ACL, or AAAI
  • PhD in ML/NLP or equivalent practical experience
  • Public work: non-trivial AI side projects, interdisciplinary experiments, open-source contributions
  • Full-stack research ownership
• Language: Professional fluency in English (written and spoken)

Nice to Have

• Experience in building, competitions, or collaborations outside academia

We Offer

• Opportunity to work with a leading AI research lab
• Remote work within Switzerland
• Full-time, permanent employment
• Employment via Employer of Record (EOR)
• Potential U.S. visa and relocation support for future relocation to the San Francisco Bay Area

About the Company

Inworld is a research lab of top researchers and engineers, building the world’s top-ranked realtime voice models. We are committed to advancing the field of AI and creating impactful applications that improve user experiences globally.