LeetCode is the undisputed king of technical interview preparation. If you're targeting high-paying algorithmic screens at FAANG-tier companies, you should be on LeetCode. It builds the core problem-solving muscle that competitive programming requires.
The 'Algorithm Grind' vs 'Production Proficiency' Gap
The problem with over-optimising for LeetCode is that algorithmic puzzles represent about 5% of actual software engineering work. In the other 95%, you're managing complex state in React, debugging SQL deadlocks, or orchestrating microservices on AWS. LeetCode doesn't test for any of that.
Why Skeelzy is the missing piece
Skeelzy tests exactly what you'll be doing on day one of the job. Our quizzes are designed to verify concepts that senior engineers look for in candidates: rendering patterns, type safety, database design, and cloud architecture. When you show a 90% score on a Skeelzy React quiz, you're giving a recruiter evidence that you can ship code, not just solve puzzles.