I Built the Tool I Wish Existed on Day One of My First Job

remember my first day at a real company.
I had passed the interviews. I had solved the LeetCode mediums. I had memorized system design patterns from YouTube videos at 2am.
Then I opened the codebase.
20,000 lines. No comments. A Jira ticket that said "fix the reporting module" with zero context. A senior engineer who glanced at me and said "let me know if you get stuck."
I froze.
Not because I couldn't code. Because nothing had ever prepared me for that — real ambiguity, real scale, real expectations.
LeetCode never did. HackerRank never did. No course ever did.
So I built the thing that would have saved me.
It's called DevSimulate.
The tagline is: The flight simulator for software engineers.
Pilots don't fly their first real flight with passengers on board. They simulate first — real cockpit, real pressure, real decisions — in a safe environment.
Developers do the opposite. We practice toy problems, then get thrown into production on day one and hope for the best.
DevSimulate flips that.
Here's how it works:
You install a VS Code extension
You pick a real enterprise codebase — a 20,000-line .NET CRM, a Python + LangChain RAG pipeline, a system design challenge
You get assigned an ambiguous business ticket — no hand-holding, no hints
You clone the repo, solve it using any tools you want (yes, including AI)
You submit a PR through the extension
You fill a PR description, answer two chained follow-up questions that prove you actually understand what you did
Claude AI reviews your PR like a senior engineer — scoring your diagnosis, your design, your communication, your execution
You get a real score. Real feedback. Real signal on where you actually stand.
Why I'm writing this post
I'm a solo founder. Six years as a senior software engineer. I built this entire platform solo over the last few months.
The product is live. The VS Code extension is published. Real enterprise codebases are live. The AI review engine is running.
One of the first people to try it scored 76/100 on a senior-level .NET ticket. His words: most useful technical experience since he started coding.
I'm not here to sell you anything.
I'm asking you to try it.
The first two tickets are completely free. No credit card. No catch.
If it's useful, tell me. If it's broken, tell me louder. If it changes how you think about job readiness — share it with one developer you know who's preparing for their first or next role.
That's all I'm asking.
Try it: devsimulate.com
I read every reply. Drop a comment if you try it — I want to know your score.****