Phase 15Intermediate19 of 19 in the curriculum

Interview Mastery

The two templates that turn 50+ problems into one repeatable process.

Everything in this syllabus exists to make ONE thing automatic: you never improvise an interview again. This phase gives you the two templates — HLD and LLD — that you can execute on ANY problem, plus the hard truth checklists.

The completion checklist at the end of this phase is the actual goal of the course: do these without a tutorial open.

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5 topics ~33 min 2 code blocks & diagrams

Start with the first topic

Template — The 13-Step HLD Answer

The HLD interview skeleton: 13 steps that work for Twitter, Uber, payment systems, or a CI/CD platform. Run them in order, out loud.

7 min 1 code practice

Template — The 13-Part LLD Answer

The LLD analogue: requirements → actors → use cases → entities → responsibilities → relationships → interfaces → SOLID → patterns → extensibility → concurrency → code → tests.

7 min 1 code practice

The Learning Loop — How to Study Every Topic

The syllabus's core loop: Learn → Close the tutorial → Explain without notes → Implement → Break it → Fix it → Explain trade-offs. Never stop at definitions.

7 min practice

The First 10 Study Sessions

The syllabus's starting order — don't read the whole roadmap daily; run this schedule, sequentially, before anything advanced.

6 min practice

The Completion Checklist — You're 'Done' When…

The syllabus's graduation test: the things you must be able to do with the tutorial closed. This is the actual objective of the whole course.