Senior AI Research Engineer - Multimodal & Speech (Equity)

EngineersOfAI; Pittsburgh (Allegheny County); On-site; USD 197,200 - 266,800; Full time

Benefits offered by this job

Equity compensation

Job summary

Duolingo is seeking a Senior AI Research Engineer to join the Video Call team. You will build and refine AI systems that power learning experiences, including large language and speech models, with a focus on scalable, data-driven solutions.

You will collaborate across frontend, backend, and AI teams, mentor colleagues, and influence product strategy while staying current with ML research and best practices. This role offers equity compensation and a competitive salary.

Qualifications

• Proven experience as an AI research engineer with LLMs, multimodal modeling, speech, or related fields.
• Strong background in training and fine-tuning large models in an applied setting.
• Advanced degree in Computer Science, Engineering, or related field with focus on machine learning or AI, or equivalent experience.
• Excellent leadership and communication skills, with the ability to lead and inspire a team.
• Technical depth to guide architecture and implementation trade-offs, evolve quality standards, and mentor engineers on best practices.
• Deep understanding of machine learning concepts, frameworks, and best practices.

Responsibilities

• Join a full-stack team of frontend, backend and other AI Research engineers.
• Contribute to development and training of a variety of ML models, including large-scale neural networks, speech recognition, and text-to-speech systems.
• Collaborate with cross-functional teams to understand their needs, to align the models' outputs with company objectives.
• Participate in and influence strategic product and business decision making with members of the Language Learning leadership group.
• Stay up-to-date with the latest developments in machine learning and apply this knowledge to drive advancements in our projects.
• Mentor team members, providing guidance and support in their professional development.
• Ensure the delivery of high-quality, scalable, and efficient machine learning solutions.

Skills

LLMs

Multimodal modeling

Speech models

Fine-tuning large models

Leadership

Communication

ML concepts & frameworks

Education

Advanced degree in CS/Engineering or related field

Job description

Duolingo is seeking a Senior AI Research Engineer to join the Video Call team. You will build and refine AI systems that power learning experiences, including large language and speech models, with a focus on scalable, data-driven solutions.

You will collaborate across frontend, backend, and AI teams, mentor colleagues, and influence product strategy while staying current with ML research and best practices. This role offers equity compensation and a competitive salary.