SDE-1 → Product Switch Prep

System Design & DSA Roadmap
2026–2027

Mid June 2026 → Mid June 2027  |  2 hrs/day  |  Product-Based Companies

365Days
~850Hours
500+Tasks & Qs
10Phases

Overall Progress

⏱ Weekly Schedule Template (DSA vs SD)

Mon
Learn concept (1hr) + 1 Problem
Tue
Medium problems + dry run on paper
Wed
Timed solving (45 min each)
Thu
Concept revision + variations
Fri
Hard problem / Core practice
Sat
System Design Study / Mock
Sun
System Design Study / Rest

⚡ Golden Rules

🧠

20 min rule — Nahi aaya toh 20 min socho, tab hint lo. Solution seedha mat dekho.

📝

Pattern-wise notes — Topic nahi, approach. "When I see X, I think Y."

🔁

Spaced repetition — 7 din baad revisit karo bina old code dekhe.

🗣️

Think aloud — Interviews mein bolna zaroori hai. Mirror ke saamne approach explain karo.

🛠️

Relate SD to Projects — Connect HLD/LLD concepts to your own MERN/Node.js backend builds.

📊

Track karo — Notion ya spreadsheet — topic, date, difficulty, time liya.