Matheus Lima on what makes you senior: But if you strip away the title, the salary, and the years of experience, there’s one core skill that separates senior+ engineers from everyone else: reducing ambiguity. Everything else flows from that.

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Senior engineers are distinguished not by title or years of experience, but by their ability to reduce ambiguity in projects. They ask critical questions others miss, separate signal from noise, prioritize effectively, and derisk projects through clarity. This skill makes them valuable beyond just writing good code.

What Actually Makes You Senior – Frontend Masters Blog

<p>Exactly. Working 10 years on the same narrow and very specialised project will not make you a senior. On the other hand, someone can become a senior after two years of constant, evolving &amp; learning.</p>
