Agentic coding changes what 'senior' means.
Less typing, more judgment. As agents take over the keystrokes, the bottleneck moves from writing code to deciding what's worth building, and whether what got built is any good.
For twenty years, "senior" partly meant fast and fluent at the keyboard: you'd internalized the language, the framework, the patterns, and you could produce correct code quickly. Agentic coding is quietly dissolving that part of the definition. The keystrokes are getting cheap.
The skill that's left is judgment
When an agent can draft the implementation, the scarce skill isn't producing code; it's deciding what to build, framing the problem so a machine can attack it, and reviewing the result with enough taste to catch the subtle wrong thing. That's the senior part. It always was; it's just no longer hidden behind the typing.
I watch this happen on enablement projects. The engineers who thrive aren't the fastest typists. They're the ones who can hold the whole system in their head, smell a bad abstraction, and say "no, the real problem is over here."
What to get good at now
- Problem framing: turning a fuzzy ask into something an agent can actually do.
- Review under speed: reading generated code critically without rubber-stamping it.
- Architecture and taste: the calls a model still can't make for you.
- Knowing when not to build the thing at all.
Juniors aren't obsolete: the ladder changed
The worry is that if agents write the easy code, juniors never learn. The fix isn't to make them type more boilerplate; it's to move them up the stack sooner, into framing and review, with guardrails. The ladder didn't disappear. Its rungs moved.
Where it lands
"Senior" is becoming less about how much you can produce and more about how good your decisions are. That's a better definition. It rewards the thing that was always the actual job.