Contribute to core systems while raising code quality, testing, and design standards. Drive technical conversations and guide architectural decisions. Mentor peers and junior engineers. Find solutions to performance, reliability, and scalability challenges. Identify and resolve bottlenecks to keep projects moving. Promote quality practices like TDD and continuous delivery. Own work from design and implementation to operations and observability. Collaborate across teams for cohesive solutions. Refine engineering practices and tooling. Stay curious, humble, and open to feedback.