AI Research Tech Lead, Large Language Models

Duolingo is the world's most popular learning app. Beyond our core learning product, we also offer English proficiency testing with the Duolingo English Test, and are bringing new subjects into the Duolingo app, where people can develop their Math and Music skills. We are passionate about educating our users, making fact-based decisions, and finding innovative solutions to complex problems. We offer meaningful work, limitless learning opportunities, and collaboration with world-class minds. Come brighten your life and over half a billion more! We are looking for an experienced AI Research Engineer to lead our Large Language Model team. The ideal candidate will have a proven track record as a Technical Lead or Manager, with extensive experience in developing, training, and fine-tuning large neural networks. Experience with LLMs is highly desirable, but we also welcome candidates skilled in vision or other deep learning networks. This role requires leading a talented team of engineers, guiding them in innovating and adapting LLMs to meet the internal needs of Duolingo, which may include fine-tuning LLMs, creating NLP data pipelines, working with open source LLMs, deploying models on-device, etc. You Will…Lead a team of backend and AI Research engineers, fostering a collaborative and innovative work environment. Oversee the development and fine-tuning of large-scale neural network models, with a focus on language models. Collaborate with cross-functional teams to understand their needs, to align the large language model goals with company objectives. Stay up-to-date with the latest developments in machine learning, particularly in LLMs, 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. You Have…Proven experience as a Technical Lead or Manager, preferably in LLMs or related fields. Strong background in training and fine-tuning large neural networks. Advanced degree in Computer Science, Engineering, or a related field with a focus on machine learning or artificial intelligence. Excellent leadership and communication skills, with the ability to manage and inspire a team. Deep understanding of machine learning concepts, frameworks, and best practices. We invest in and support our Duos! This role is eligible for a robust compensation package of base salary, equity, and Duolingo’s world-class benefits. The starting base salary range for this role is, $197,500 - $374,000. Actual salary may vary based on level, work experience, performance, and other factors evaluated during the hiring process. We will do everything we can within reason to make sure that your interview takes place in an environment that fairly and accurately assesses your skills. If you need assistance or accommodation, please contact your recruiter. Take a peek at how we care for our employees' holistic well-being with our benefits here.