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Build and deploy ML solutions for Duolingo Video Call, including LLMs, speech recognition and TTS. Lead model training, fine-tuning, RL, evaluation, deployment, monitoring, cross-functional collaboration, and mentorship to improve learning experiences at scale.

Lead Duolingo's creative vision for marketing, driving culturally resonant campaigns while mentoring a team of creatives and collaborating across departments to enhance brand impact.

Lead a team of 6–10 data scientists to drive user acquisition, activation, retention, and reengagement through experimentation, forecasting, ML, and business intelligence. Set analytical vision, build forecasting systems and metrics, embed data scientists in product teams, influence leadership with clear narratives, and hire and develop high-performing talent.

Lead Data Science for User Growth: set analytical vision, manage and grow a 6–10 person team, design and interpret experiments, build forecasting systems, drive BI and metrics, partner cross-functionally, translate analyses into leadership-ready recommendations, and hire top talent.

Lead Duolingo Ads in the Central region: set regional strategy, build pipeline, cultivate senior brand and agency relationships, close complex deals, partner cross-functionally to shape pricing, packaging, and product, and establish repeatable sales systems and standards.

Lead product strategy and improvements for the Duolingo English Test, including user acquisition, monetization, security, test development, and global scaling. Partner with engineering, AI research, design, marketing, and other teams to improve the testing experience. Conduct qualitative and quantitative research, use data to validate ideas, guide feature development, and deliver innovative product changes for learners worldwide.

Develop strategies, assess markets and opportunities, establish success metrics, and guide prioritization across Growth, Language Learning, Monetization, and other functions. The role partners with product, engineering, design, marketing, partnerships, data science, and finance teams to turn insights into scalable systems and accelerate company priorities.

Lead design of playful, user-focused experiences across Duolingo's mobile apps, web, and communications. Drive large workstreams, create high-fidelity prototypes, mentor peers, collaborate with PMs and engineers, and refine UI, animation, copy, and brand to deliver delightful learning experiences.

Lead and scale Duolingo's Math engineering org, drive product and technical strategy, partner with Product/Design/Learning/AI, build leadership bench, and deliver high-velocity, experiment-driven, LLM-enabled education products while ensuring operational excellence and hiring/talent decisions.

As a Senior iOS Engineer, you will develop features for Duolingo's short-form lessons, collaborate on software projects, mentor junior engineers, and optimize applications. Responsibilities include building iOS apps in Swift and enhancing user engagement in educational content.