How would you assess your level of competence in backend system development?

Assessment of backend development competence depends on several factors:

• Knowledge and experience with server frameworks (e.g., Django, Flask).
• Understanding of client-server architecture and REST API.
• Experience with databases (SQL and NoSQL).
• Skills in authentication, authorization, and security.
• Ability to design scalable and fault-tolerant systems.

For junior level, basic knowledge and ability to create simple APIs and work with databases are sufficient. Middle developers should be able to design more complex systems, optimize performance, and ensure security.

Self-assessment example:

• Junior: "I can create REST API on Flask, work with PostgreSQL databases, understand the basics of HTTP and client-server interaction."

• Middle: "I have designed and maintained several backend services on Django, optimized database queries, implemented authentication, and ensured scalability of applications."