Senior Software Full-Stack Engineer

About this role

Yahoo Mail is the ultimate consumer inbox with hundreds of millions of users. It’s the best way to access your email and stay organized from a computer, phone or tablet. With its beautiful design and lightning fast speed, Yahoo Mail makes reading, organizing, and sending emails easier than ever.


With 900M monthly users across Yahoo and over 200M monthly users on Yahoo Mail, Yahoo is in the middle of a true renaissance. Backed by long-term investment, modernized technology stacks, and strong leadership support, we’re operating from a position of strength—and playing offense. There’s a clear mandate to take bold bets and build user-centric experiences that redefine how people manage the “business of life.”


If you’re motivated by consumer scale, energized by big opportunities, and excited to help shape one of the largest consumer product success stories in history, this is a rare moment to join and make an outsized impact.


**A Little About Us:**
This role sits within the Yahoo Mail organization, home to one of the most widely used consumer products in the world. Yahoo Mail delivers 4.5+ star mobile apps and highly responsive web experiences, supported by modern front-end stacks and a backend architecture that’s actively being reimagined for the future.


Over the past year, the User Growth team has proven that delight and habit formation can drive real behavioral change at massive scale. From multi-week challenges and streak systems to smarter notification strategies and micro-delight UX, we’ve shipped programs that meaningfully increased DAU. Our experimentation velocity continues to accelerate, and each success feeds reusable lifecycle components adopted across platforms.


You’ll join a team of engineers who care deeply about craft, iteration, and outcomes—and who are excited to build 0→1 habit systems that influence how hundreds of millions of people engage with their inbox every day. Together, we’re defining the next chapter of Yahoo ...