Beyond Senior: From “Baeksoojeo” to Lead Developer

The gap between senior and lead engineers is less about coding skill and more about defining problems, setting priorities, and aligning the organization.

Lead developers focus on choosing and driving the most important work from team, product, and business perspectives, not just technical correctness.

Even junior developers can act like leads by making suggestions, automating work, joining planning, and sharing knowledge.

Career growth should be measured not only by personal proficiency, but by impact on the team and the business.