Problem solving
Break problems down, choose data structures, analyze complexity, and adapt when constraints change.
Coding fundamentals
Prepare arrays, strings, hash maps, trees, graphs, recursion, dynamic programming, sorting, searching, and tests.
System design
For mid-level and senior roles, prepare APIs, data models, scaling, reliability, caching, queues, storage, and observability.
Communication
Explain assumptions, tradeoffs, edge cases, and debugging steps instead of silently coding.
Project depth
Resume projects can lead to architecture, ownership, incidents, collaboration, and business impact questions.
Behavioral signal
Companies often evaluate teamwork, ambiguity, leadership, conflict, learning, and ownership alongside technical skill.