Software developers have titles such as Python developer, Back-End Developer, Front-End Developer or Computer Engineer, Software Engineer.
For example, the Python developer subfield;
1-) Python script programming
2-) Security tools to improve Python
3-) Python to develop web applications
4-) Python for data analysis
5-) Python for desktop programming
6-) Python for machine learning
Is it true that developers write only Python developers in their titles?
If he writes the title name as Python Developer, can we assume he knows all his sub-branches?