Senior Speech AI Research Engineer for Education Tech

Duolingo; Lower Providence Township (PA); On-site; USD 221,000 - 331,000; Full time

Benefits offered by this job

Equity compensation

Accommodations for interview

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Job summary

Duolingo is seeking an experienced AI Research Engineer to join the Speech team, focusing on ASR, TTS, speech-to-speech models, and audio tokenization. You will work across the ML stack, from feature engineering to deployment, while supporting product features like Video Call and learning paths.

A leadership role with cross-functional collaboration and mentorship is expected. You will contribute to training speech models, manage large neural networks, and drive strategic product decisions.

Qualifications

• Proven experience as an AI research engineer in speech recognition, TTS, LLMs, or related fields.
• Strong background in training and fine-tuning large models in an applied setting.
• Excellent leadership and communication skills to manage and inspire a team.

Responsibilities

• Join a full-stack team of frontend, backend, and AI Research engineers to foster collaboration.
• Contribute to development and training of speech models and large-scale neural networks.
• Collaborate with cross-functional teams to align model outputs with company objectives.
• Participate in strategic product and business decisions as part of Speech leadership.
• Stay up-to-date with ML advances in speech models and apply them to projects.
• Mentor team members and support their professional development.
• Ensure delivery of high-quality, scalable ML solutions.

Skills

Speech modeling

LLMs

Leadership

Education

Advanced degree in CS or related field

Job description

Duolingo is seeking an experienced AI Research Engineer to join the Speech team, focusing on ASR, TTS, speech-to-speech models, and audio tokenization. You will work across the ML stack, from feature engineering to deployment, while supporting product features like Video Call and learning paths.

A leadership role with cross-functional collaboration and mentorship is expected. You will contribute to training speech models, manage large neural networks, and drive strategic product decisions.