Base Salary
$221k - $331k/yr
Responsibilities
- Develop and train bandit models and large-scale neural network models.
- Work across feature engineering, training-data development, fine-tuning, reinforcement learning, quality evaluation, deployment, and monitoring.
- Collaborate with cross-functional teams to align model outputs with company objectives.
- Help drive strategic product and business decisions as a member of the Monetization leadership group.
- Apply advances in machine learning, particularly large language models and bandits, to Duolingo projects.
- Mentor team members and support their professional development.
- Deliver high-quality, scalable, and efficient machine learning solutions.
Requirements
- Proven experience as an AI research engineer in areas such as large language models, multi-armed bandits, computer vision, or related fields.
- Strong applied experience training and fine-tuning large models.
- An advanced degree in Computer Science, Engineering, or a related field focused on machine learning or artificial intelligence, or equivalent experience.
- Deep understanding of machine learning concepts, frameworks, and best practices.
- Excellent leadership and communication skills, including the ability to manage and inspire a team.
Categories
About Duolingo
Duolingo is the most downloaded education app in the history of the App Store. Our mission is to develop the best education in the world and make it universally available. Learning a new language is hard, but staying motivated is often the hardest part. That’s why we use fun, bite-sized, game-like lessons designed to keep you engaged and to drive real learning outcomes. Our approach is grounded in efficacy: we continuously test and improve our methods to ensure learners make meaningful progress. We also believe in democratizing education by offering an effective, high-quality free product. Developing a great free product is essential to our mission, ensuring that anyone with a smartphone can access learning that works. When it comes to utilizing AI tools, we have a golden rule: we use it when it clearly improves outcomes for learners. We don’t use it as a shortcut or a replacement for people, but as a tool to enhance learning experiences and efficacy. Duolingo has been named to: Fast Company’s Most Innovative Education Company (2026, 2022), Apple Design Award (2023), TIME100 Most Influential Companies (2023), Fast Company Best Workplaces for Innovators (2022), among others.