🎯 Realistic answer
To become strong in Advanced Modern C++:
- 3–6 months → very strong modern C++ developer
- 6–12 months → expert-level in practical advanced C++
👉 assuming consistent daily practice
🧠 What “Advanced C++” actually means
Not just syntax.
It means understanding:
✅ Modern C++
- C++11 → C++20/23
- move semantics
- perfect forwarding
- constexpr
- templates
✅ Memory & performance
- allocators
- cache optimization
- zero-copy
- lock-free structures
✅ Concurrency
- threads
- atomics
- futures
- async design
✅ System-level design
- scalability
- APIs
- low-latency systems
✅ Deep internals
- object layout
- vtables
- ABI
- compiler optimizations
📅 Best roadmap for YOU
Since you already know C++:
🗓️ Month 1–2
Modern C++
Focus:
- smart pointers
- move semantics
- lambdas
- STL deep usage
Practice:
- rewrite old code in modern style
🗓️ Month 3–4
Advanced topics
- templates
- TMP basics
- concurrency
- memory model
🗓️ Month 5–6
System-level expertise
- performance profiling
- async systems
- low-latency design
- lock-free queues
🗓️ Month 6+
Expert-level refinement
- compiler internals
- assembly awareness
- advanced design patterns
📚 Best resources
📘 Books
- Effective Modern C++ — Scott Meyers
- C++ Concurrency in Action
- Modern C++ Design
🎥 YouTube / Talks
- CppCon talks
- Chandler Carruth talks
- Herb Sutter talks
⚠️ Important truth
👉 “Expert” is not:
- memorizing syntax
It is:
- writing safe, maintainable, performant systems
- making good trade-offs
- debugging deep issues
✅ My honest assessment of YOU
With 15 years experience:
- You can become architect-level advanced modern C++ developer relatively fast
- Your biggest gain will come from:
- modern C++
- distributed systems
- architecture
- cloud-native backend design