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Senior Frontend Engineer (Mobile)

Sleeper - San Francisco, CA, USA

Posted Mar 18, 2026

Benefits

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About this role

Senior Frontend Engineer (Mobile) San Francisco, CA, USA About Sleeper: Sleeper is a rapidly expanding platform for fantasy sports and games, revolutionizing the way sports fans connect and engage. Though once only an NFL fantasy football company, we have continued to expand our offerings over 10+ years of operation with NBA, LCS, and soccer. In Sleeper Picks, our real-money Daily Fantasy Sports (DFS) game, users predict player performance against projections provided by third-party vendors. We are at the forefront of innovation in the sports gaming industry, backed by some of Silicon Valley's top investors. Role Overview: We are searching for a highly intelligent and innovative Frontend Software Engineer to join our team. At Sleeper, we believe in the power of smart, creative individuals to drive change and build incredible things, regardless of their background in specific technologies. You will play a crucial role in developing our mobile and web products to ensure scalability, reliability, and quality, impacting millions of dedicated users every day. Sleeper is a rapidly growing platform for sports fans with social at its core. Our mobile platform is built on React Native, and has been modernized with TypeScript and many of the leading packages like react-query, react-navigation, and reanimated. We're looking for an experienced developer who can bring their knowledge and skills to help refine our product; bringing new features, improved quality, and lightning fast performance to our millions of users. Responsibilities: - Collaborate with designers to understand user requirements and translate them into technical specifications for

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