jaideeppyne · Staff / Principal Engineer interview preparation
HLD · LLD · Behavioral · Leadership
interview-prep/
├── 📋 interview-prep/ ← cross-cutting tools, scorecards, study rituals
└── 🏗️ system-design-prep/ ← full Principal Engineer course (28 modules, 50 mocks)
| Folder | Contents |
|---|---|
interview-prep/ |
Mock scorecard, cost/security/migration checklist, study workflow |
system-design-prep/ |
Principal Engineer Mastery — HLD + LLD course (~27k lines, 9 runnable Java demos) |
- Pattern playbooks first →
system-design-prep/principal-engineer-mastery/00_PATTERN_PLAYBOOKS/ - Foundation → modules
01–06(estimation, networking, databases, caching, distributed theory, Kafka) - Parallel tracks → one HLD case study + one LLD module per week
- Score every mock →
interview-prep/tools/INTERVIEW_SCORECARD.md
- 28 modules · lectures, mechanism internals, principal deep-dives, gold-standard mocks, rapid-fire Q&A
- 50 mock transcripts · full interviewer/candidate dialogue with numbers and pushback defenses
- 47 reusable patterns · 27 HLD + 20 LLD, mapped to 140+ real interview questions
- Runnable Java · parking lot (CAS), concurrency, design patterns, ATM state machine, DI container, and more
| Time | Path |
|---|---|
| 2 weeks | Modules 01, 03, 06, 10, 14, 17, 19 + 6 timed mocks |
| 6 weeks | Foundations 01–06 + one HLD + one LLD per week + story bank |
| 12 weeks | Full 27-module curriculum with diagram-from-memory drills |
Built for FAANG / MAANG Staff & Principal (L6/L7) loops — system design, low-level design, and leadership depth.