Here's the roadmap that can help you ace the interviews
Month 1 - Master System Design Fundamentals
→ Load balancing, caching, databases, APls, microservices
→ Understand trade-offs: latency vs throughput, consistency vs availability
→ Study real systems: how Netflix scales, how Uber handles realtime data
Month 2 - Deep Dive into Distributed Systems
→ CAP theorem, eventual consistency, partitioning, replication
→ Learn how to design fault-tolerant systems
→ Study case studies: Google's infrastructure, Amazon's DynamoDB
Month 3 - Build Real Projects at Scale
→ Don't just solve LeetCode, build systems that handle scale → Build: rate limiter, URL shortener, chat system, notification service
→ Deploy them. Make them handle real traffic.
Month 4 - Learn Production Engineering Skills → Observability: logging, monitoring, tracing
→ Infrastructure as code, CI/CD pipelines
→ Incident response and debugging production systems
Month 5 - Mock System Design Interviews
→ Practice designing systems in 45 minutes
→ Explain trade-offs clearly
→ Get feedback from senior engineers or mentors
Month 6 - Polish Communication & Problem Solving
→ FDE interviews aren't just technical, they test how you think → Can you break down ambiguous problems?
→ Can you handle disagreement on architecture decisions?
Final Push - Build Your Portfolio
→ Document your system design projects
→ Write technical blogs explaining your architecture decisions
→ Show that you can think at scale, not just code
The difference between SDE & FDE
SDE: You write code that works
FDE: You design systems that scale to millions of users & don’t break.
That’s why FDE roles pay in crores not lakhs
Source - Instagram - it’s.anu.sharma
