You're full-stack. Period. You can and want to write code end-to-end. You would enjoy designing a system for speed and scale. You are capable of debating pros and cons of different architectures and tech stack choices and be real contributing members. You understand how different web frameworks work and have experience with at least one of them. We use Java Play Framework. Good understanding of SQL vs noSQL is must, we use MongoDB but always looking for better database systems. We want people who can and want to learn new technologies as tech and product requirements evolve.