Is DSA mandatory for frontend roles?

You should be comfortable with arrays, strings, linked lists, stacks, queues, trees, graphs, recursion, dynamic programming, and binary search patterns. Being able to solve medium-level problems consistently without needing hints is a reasonable benchmark for product companies. For service-based companies, strong easy-level comfort is enough. The real test is whether you can recognize the pattern in an unfamiliar problem, not whether you've memorized specific solutions.

For software engineering roles at product-based companies, skipping DSA is not a realistic option. It's the primary filter and there's no way around it. For non-coding roles like QA, business analyst, or product management, the situation is different and domain knowledge matters more. For service-based companies, very basic DSA combined with good aptitude scores and communication skills can get you through, but even there it's better to have it than not.

There's no magic number, and chasing one is the wrong approach. Solving 200 to 300 problems with genuine understanding of the patterns behind them is far more valuable than blindly completing 1000 problems. Focus on covering all major problem types: sliding window, two-pointer, BFS and DFS, dynamic programming, backtracking. For FAANG preparation, consistency on medium problems and the ability to reason through hard ones matters more than your total problem count.