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$197,200 – $266,800
Listed on Duolingo’s own careers site. You apply with them directly — we never stand between you and the employer.
What this role is
Duolingo seeks a senior AI researcher to build machine learning systems for their video call learning product, working across the full ML stack from data preparation through deployment. This role suits experienced ML engineers comfortable with large language models, speech systems, and personalization techniques who want to mentor others while solving education-focused problems at scale.
Our summary, not Duolingo’s wording. The full posting is on their site.
Skills this role names
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What they ask for
Required
- Proven experience as an AI research engineer in LLMs, multimodal modeling, speech, or related fields
- Strong background training and fine-tuning large models in production
- Advanced degree in Computer Science, Engineering, or related field with ML/AI focus, or equivalent experience
- Excellent leadership and communication skills
- Technical depth to guide architecture and implementation trade-offs
- Deep understanding of machine learning concepts, frameworks, and best practices
Nice to have
- Experience across multiple levels of the ML stack including benchmarking and quality evaluations
- Broad experience in various AI/ML domains