Junior Devs Are Disappearing. That's Going to Be Everyone's Problem.

A client asked me last month if I could "just use AI" instead of bringing on a junior developer for their project.

I said yes. And honestly? The project went fine. One senior dev plus Claude, shipping features at a pace that would've taken two juniors and a lot more Slack messages.

But here's the thing that keeps nagging at me: if every agency, every startup, every enterprise is making that same call right now, who exactly is going to be the senior developer in five years?

"We Don't Need Juniors Anymore" (The Spreadsheet Logic)

The math is seductive. One senior developer with AI tools can produce the output of two or three juniors. An AI subscription costs $200 a month. A junior developer costs $80,000 a year. A CFO looks at those numbers and the decision makes itself.

According to a 2025 LeadDev survey, 54% of engineering leaders plan to hire fewer juniors because of AI. Not might. Plan to. That's not speculation, it's already baked into next year's headcount.

And I get it. I run a one-person agency. I understand the appeal of doing more with less. When a tool genuinely saves you time and money, you'd be foolish not to use it. The problem isn't that the short-term logic is wrong. The problem is that it's only short-term logic.

It's like everyone building an app now because AI made it possible. The barrier to entry dropped, but the barrier to doing it well didn't move an inch.

The Numbers Are Brutal

Entry-level developer job postings have dropped 67% since 2022. Let that sink in. Two-thirds of the on-ramp into this industry just vanished.

The junior share of new IT hires fell from 15% to 7%. Employment for software developers aged 22-25 declined nearly 20% from the 2022 peak, according to a Stanford study. CS graduate unemployment sits at 6.1%, nearly double the 3.6% overall rate.

Here's the one that really gets me: 48.7% of "entry-level" job postings now require 2+ years of experience. Only 11.2% require zero experience. So even the jobs that say "entry-level" aren't actually entry-level.

Big Tech tells the story most clearly. New graduates represented 32% of hires in 2019. By 2026, that number cratered to 7%. Tech internship postings dropped 30% since 2023.

These aren't projections. These are things that already happened.

Who Becomes Senior in 5 Years?

This is the question nobody in a quarterly planning meeting wants to answer.

It takes 5 to 9 years to produce a senior engineer from a new grad. That's not a number I made up. That's what companies consistently report when you ask them how long it takes someone to go from "needs code review on everything" to "can architect a system and mentor others."

McKinsey forecasts a 14 million senior developer shortage by 2030 if junior training doesn't resume at previous levels. The companies cutting juniors today won't feel the pain until 2029 to 2033. By then, it's too late to fix. You can't speed-run five years of experience.

I've written before about how AI coding tools are atrophying my own skills. And I'm someone with years of fundamentals to fall back on. Imagine starting your career without ever building those fundamentals in the first place.

The pipeline doesn't just slow down. It breaks.

AI Doesn't Replace the Learning, It Skips It

There's a difference between a junior developer who debugged a memory leak for three days and finally understood how garbage collection works, and a junior developer who asked Claude to fix it in thirty seconds.

Both got the bug fixed. Only one learned anything.

I've seen this firsthand. The "accept all suggestions" developer who ships fast but can't explain what the code does. Who can't debug without AI because they never learned how the pieces connect. Who writes prompt after prompt but couldn't write a for loop from scratch if you took the tools away.

As I wrote in a previous post, Claude is great at building software, but it's also great at breaking it. Someone needs to understand the code well enough to catch when the AI is confidently wrong. And that understanding comes from years of writing bad code, fixing it, and slowly getting better.

You can't shortcut the reps. A pilot doesn't learn to fly by watching autopilot handle every situation. Eventually, autopilot hands control back, and you'd better know what you're doing.

The Counterargument (And Why It's Thin)

Fair point: not everyone is cutting juniors.

IBM actually tripled their junior developer intake under their CHRO's leadership. Some enterprises are going against the trend, betting that investing in talent development now gives them a competitive advantage later.

And there's an argument that "junior" is being redefined rather than eliminated. That the new junior developer is someone who can leverage AI effectively, review AI output critically, and learn faster because of better tools. That the bar is shifting, not disappearing.

I want to believe this. But when I look at the actual numbers, the companies doing this are exceptions. The overwhelming trend is clear: most companies are following the herd, cutting junior roles, and hoping AI will fill the gap permanently.

Hope is not a strategy.

What This Means If You Run a Business

If you're a business owner who hires developers, or works with agencies, or depends on software in any meaningful way, here's what's coming.

Senior developer salaries are going to skyrocket. Simple supply and demand. Fewer juniors entering the pipeline means fewer seniors coming out the other end. When the supply of experienced developers shrinks while demand stays the same (or grows, because AI makes software even more central to everything), prices go up.

Poaching wars will get uglier. The companies that invested in training juniors will watch their newly-minted seniors get recruited away by companies that didn't bother. Classic tragedy of the commons.

For people like me, running small agencies and thinking about what to charge for a website, this changes the math. Developer talent is already the biggest bottleneck. It's about to get worse.

The companies investing in junior developers right now will own the talent market in five years. Everyone else will be fighting over the same shrinking pool.

I Don't Have a Clean Answer

I usually try to end these posts with something practical. A checklist, a framework, a "here's what to do next."

I don't have that this time.

The industry is making a collective bet that AI will keep improving fast enough that we won't need as many human developers. Maybe that bet pays off. Maybe GPT-7 or Claude 6 really does eliminate the need for junior developers entirely. Maybe the whole concept of "learning to code by doing it badly for five years" becomes as outdated as learning to use a slide rule.

But if that bet doesn't pay off, if AI hits a plateau, if it turns out you still need humans who deeply understand systems, we're going to look back at 2024-2026 as the years we broke the pipeline and didn't notice until it was too late.

No single company is incentivized to fix this. Training juniors is expensive, slow, and benefits the entire industry (including your competitors). It's a textbook tragedy of the commons. Everyone benefits from a healthy talent pipeline, but nobody wants to pay for it.

I'm watching this from my one-person agency, using AI every day, benefiting from the same trend I'm worried about. The same AI that's killing traffic is also killing career paths. I don't have a solution. But I think it's worth being honest about the problem.

If your business depends on software, start thinking about where your developers are going to come from in five years. Because right now, the answer might be: nowhere.

Want to talk about how this affects your tech stack and hiring plans? Let's figure it out together.