Your Path to Staff Engineer Starts Here.
Most developers get stuck at "Mid-level" because they learn features, not systems. This page is your guided journey from writing code that works to designing systems that never fail.
1
The Foundation (Level 1)
Objective
Design a single service that can handle 1,000 users.
Key Topics
- REST/gRPC API design principles
- SQL indexing secrets and query optimization
- SOLID principles and clean Java code
- Basic Load Balancing concepts
2
Scaling Up (Level 2)
Objective
Scale to 100,000 users and 10 servers.
Key Topics
- Distributed Caching with Redis
- Database Sharding and Partitioning
- Rate Limiting and Circuit Breakers
- Microservices Resilience patterns
3
The Distributed Mesh (Level 3)
Objective
Build a decoupled system that handles millions of writes.
Key Topics
- Kafka Internals (Log Segments, Zero-Copy)
- The Transactional Outbox pattern
- Distributed Locking with Zookeeper
- Event-Driven Consistency
4
Architectural Authority (Expert)
Objective
Ensure 99.999% availability and data integrity.
Key Topics
- The Saga Pattern for Distributed Transactions
- PACELC Theorem and Advanced Trade-offs
- Multi-region Replication strategies
- Zero-Downtime Migration playbooks
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