Expertise developing complex web applications with high-craft beautiful user experiences, using React, JavaScript, and modern CSS frameworks like tailwind. Expertise with Ruby on Rails (preferred) or experience with other backend frameworks with willingness to learn Rails. Strong contributor across the stack, from the browser to the database. Ability to plan, estimate, and execute complex ambiguous projects independently while keeping stakeholders informed. Ability to write high-quality, well-tested, performant, and accessible code with minimal guidance. Clear communication skills with ability to drive clarity with Engineers, Product Managers, and Designers. Partnering effectively with Product and Design to create delightful experiences. Working across a legacy codebase and evolving it safely through migrations and system refactors. Diagnosing root causes of problems and proposing solutions with clear trade-offs and business impact. Mentoring and teaching other engineers formally and informally.