Senior AI Research Engineer — Multimodal ML, Speech, Equity

TrulyHired; Pittsburgh (Allegheny County); On-site; USD 197,000 - 267,000; Full time

Job summary

Duolingo in the United States is seeking a Senior AI Research Engineer to join the Video Call team. You will build and refine AI systems across LLMs, speech and multimodal models, with end-to-end responsibilities from data preparation to deployment and monitoring.

The role emphasizes leadership, collaboration with cross-functional teams, and delivering scalable, high-quality ML solutions that improve the learning experience for billions of users worldwide.

Qualifications

• Proven experience as an AI research engineer in LLMs, multimodal modeling, speech, or related fields.
• Strong background in training and fine-tuning large models in an applied setting.
• Advanced degree in CS, Engineering, or related field with focus on ML/AI, or equivalent experience.

Responsibilities

• Join a full-stack team of frontend, backend and other AI Research engineers, fostering collaboration.
• Develop and train a variety of ML models, including large-scale neural networks, speech recognition, and text-to-speech systems.
• Collaborate with cross-functional teams to align model outputs with company objectives.
• Participate in strategic product and business decision-making with Language Learning leadership.
• Stay up-to-date with ML developments and apply them to our projects.
• Mentor team members and guide best practices.

Skills

AI research

LLMs

Multimodal modeling

Speech

Team leadership

Education

Advanced degree in CS/Engineering or related field

Job description

Duolingo in the United States is seeking a Senior AI Research Engineer to join the Video Call team. You will build and refine AI systems across LLMs, speech and multimodal models, with end-to-end responsibilities from data preparation to deployment and monitoring.

The role emphasizes leadership, collaboration with cross-functional teams, and delivering scalable, high-quality ML solutions that improve the learning experience for billions of users worldwide.