50+ Real Backend Interview Experiences (2–6 YOE)

If you are prepping for backend software interviews, you already know the problem: blog posts give you 5 vague questions, and "interview experience" PDFs online are mostly recycled and outdated.

This one isn't. It's a first-hand log of more than 50 real interview processes I went through (or collected) for backend roles at the 2–6 year experience level — startups, fintechs, product companies, and a few big names — recorded round by round, the way they actually happened. Includes fresh 2026 interview cycles.

What you get (35 pages):

• 50+ companies, fully broken down round-by-round
• Real DSA questions with LeetCode links where they exist
• Full LLD / machine-coding briefs — parking lot, Splitwise, BookMyShow, BNPL, logging frameworks, job schedulers, and more, with actual class/API sketches
• HLD prompts — Google Drive, Google Maps, Uber-style cab booking, rate limiters, in-memory Kafka, URL shorteners
• Java & concurrency deep-dive questions (HashMap internals, executors, locks, GC)
• A High-Frequency Hit-List — the 16 patterns that repeat across dozens of companies, so you know exactly what to master first
• A topic map indexing all companies by what they actually tested (LLD / HLD / DSA / Java / Spring / DB / etc.)
• Clickable bookmarks so you can jump straight to any company

Who it's for: Backend SDE-1/2/3 candidates prepping for product and startup interviews who want to know the real patterns instead of guessing.

This is the same prep material I used to navigate my own interview rounds — packaged so you don't have to start from zero.