Lead the design and development of complex features from concept to deployment. Collaborate with product and stakeholders to define scope, refine requirements, and ensure solutions meet business goals. Make sound architectural decisions to keep our Rails app maintainable, performant, and scalable. Dedicate time (at least 20%) to improving stability, performance, and developer experience. Maintain a strong automated test suite so we can confidently deploy to production multiple times per day. Proactively monitor, investigate, and resolve production issues, driving preventative improvements. Mentor and support engineers through code reviews, pairing, and knowledge sharing.