Skip the random problem dumps. Every kit is a focused, company-specific set of recently asked questions — filterable by difficulty, backed by prep PDFs, and solvable right in the TrainX compiler.
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Companies
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Problems
No random problem dumps. Just a clear path from "where do I even start" to walking into the interview prepared.
Search or browse verified kits for the companies actually hiring — from Google to your dream startup.
See the exact Easy / Medium / Hard mix for that company and plan a realistic prep schedule.
Practice right inside the TrainX compiler, grab the prep PDF, and watch your progress add up.
Google Kit
350 problems
Kits stay focused on problems that still show up in interviews — curated from platforms, past papers, and TrainX learner feedback.
Warm up on Easy, grind Medium, and finish with Hard. Every kit breaks down the mix so you know what to expect.
Pair coding practice with company-specific notes and resources so you walk in knowing the pattern, not just the problems.
Companies that have been with us for your preparation.
Featured kits from top companies — problems, difficulty mix, and prep resources in one place.
Stop guessing what to practice next. Pick the company you want, follow the signal, and make every solved problem count.
A simple route
From browsing to ready
Choose a company
Targeted question set
Set your difficulty
Warm up or go deep
Start solving
Build interview momentum
We've got answers
Each kit is a focused set of coding problems and prep resources for one company. Open a kit to see difficulty mix, mark progress, and download PDFs when they are available.
