PayPal is seeking a Staff Software Engineer specializing in Ruby on Rails to join their Braintree team. This role is crucial in evolving the merchant experience and platform that powers major services like Uber, Airbnb, and PayPal checkout. As a Staff Engineer, you'll be responsible for making key technology decisions, building and maintaining large production-grade systems, and mentoring other engineers. The position involves working with distributed systems at scale, handling tens of millions of requests daily. The role requires expertise in Ruby on Rails services, experience with distributed architectures, and familiarity with various databases including Oracle, Couchbase, and Cassandra. PayPal offers a competitive compensation package including equity, comprehensive benefits, and a hybrid work model. The company emphasizes inclusion, innovation, collaboration, and wellness as core values. This is an opportunity to work on critical financial infrastructure that impacts millions of users globally while being part of a team that values technical excellence and customer focus. The position offers significant technical leadership opportunities and the chance to influence architectural decisions in PayPal's core payment systems.