Duolingo, the world's most popular learning app, is seeking a Backend Software Engineer to join their team. As a Backend Engineer, you will work on building the APIs that power Duolingo's products and provide learners with a best-in-class experience. The role involves working with a microservices infrastructure composed of hundreds of endpoints serving hundreds of millions of requests per day. You will collaborate with team members to identify requirements and design services that are fast, resilient, and cost-effective. The position offers ownership over the entire lifecycle of services and associated infrastructure, ensuring they are always operating well. Duolingo's mission is to develop the best education in the world and make it universally available. The company offers meaningful work, limitless learning opportunities, and collaboration with world-class minds. This role is part of Duolingo's effort to expand beyond their core learning product, which now includes the Duolingo English Test and new subjects like Math and Music. The company is passionate about educating users, making fact-based decisions, and finding innovative solutions to complex problems. Join Duolingo to brighten your life and the lives of over half a billion learners worldwide!