Balancing software quality with development speed is a core challenge in startup environments. Four practical principles help achieve both: pragmatism (choosing the simplest solution that fits the problem), short feedback loops (catching bugs as early as possible via linting, typing, and static analysis), clear ownership (ensuring every issue has a named responsible person), and automation (enforcing standards through CI, linters, and AI code review rather than relying on documentation or team habits). The key insight is that quality and speed are compatible when quality is made cheap to enforce rather than dependent on heavy processes.