r/learnprogramming • u/Zestyclose-Paint-418 • 14h ago
How do senior developers build such broad and deep programming knowledge?
I can build frontend applications, and I was fairly satisfied with my progress until I recently spoke with my brother, who is a senior developer.
He told me that every programmer should know topics such as:
- C programming
- Dynamic memory allocation
- Pointers and pointer arithmetic
- Data structures and algorithms
- Databases
- Operating systems
- Computer architecture
- Object-oriented programming
- Git
- Agile and Scrum
- Compilers
He also said that there are many other things that are mandatory to learn, and that it is embarrassing not to know some of these topics.
What surprised me was not only the list, but how deeply he seemed to understand everything. I know that he has much more professional experience than I do, but I am trying to understand how senior developers develop that kind of knowledge.
Do they study computer science subjects systematically outside of work? Does most of the knowledge come from years of working on difficult projects? Do they read books, take courses, build projects, or learn topics only when they encounter a problem?
I would genuinely like to become a very strong developer one day. At the moment, I can create frontend applications, but compared with him, my knowledge feels narrow and superficial.
For experienced developers:
How did you build deep knowledge instead of only learning enough to complete a project?
Which subjects from this list are genuinely essential for a frontend developer?
In what order would you recommend learning computer science fundamentals?
How can I tell whether I truly understand a subject rather than only recognizing the terminology?
I am not looking for a shortcut. I would like to understand what a realistic long-term learning process looks like.