Staff / Principal Research Scientist - UK
£140k - £200k • UK • FullTime
Posted 5mo ago
About the job
Inworld is a research lab building top-ranked real-time voice models used in large consumer-facing AI applications across health, fitness, learning, therapy, companions, customer experience, and media. We are seeking a Staff/Principal Research Scientist to join our team. We are looking for individuals who learn fast, thrive in ambiguity, and can demonstrate their built, broken, and understood work, rather than a specific resume template. We value impact and shipping results, with a focus on first-principles engineering and mission ownership.
Responsibilities
- Frame research questions, run experiments, write papers, and ship results.
- Develop and train foundation models, including new architectures, RL, reward modeling, and scaling.
- Implement and refine evaluation methodologies, including benchmarks, eval loops, quality measurement, LLM-as-judge, and failure analysis.
- Explore and implement frontier AI topics such as multimodal models, agents, tool use, test-time compute, and world models.
- Contribute to published research at top-tier conferences (ICML, ICLR, NeurIPS, EMNLP, ACL, AAAI).
- Own research projects from conception to completion.
Requirements
- Experience with foundation models: training, new architectures, RL, reward modeling, scaling.
- Experience with evaluation: benchmarks, eval loops, quality measurement, LLM-as-judge, failure analysis.
- Familiarity with frontier AI 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.
- Demonstrated public work: non-trivial AI side projects, interdisciplinary experiments, open-source contributions.
- Ability to take full-stack research ownership.
- Comfortable working in ambiguous environments and building roadmaps as you go.
- Bias for impact and shipping research results.
- Legal right to work in the United Kingdom.
Benefits
- Equity
- Benefits
- Full U.S. visa and relocation support may be available for future relocation to the San Francisco Bay Area.