Technical interviews reward a specific, learnable kind of preparation — they’re a window into your thought process, not just a pass/fail on the output. Tap a format to see what it rewards and how to prepare.
Format 1 · The live coding interview
Rewards: thinking out loud
The most common format: you’re given a problem — often algorithmic — and asked to code a solution, usually in a shared editor or on a call, while the interviewer observes.
How to prepare
Practice on the standard platforms — LeetCode, HackerRank, and similar sites host the genre of problems you’ll see. Work through problems by topic.
Master the core data structures and algorithms — arrays, strings, hash maps, linked lists, trees, graphs, stacks/queues, recursion, sorting, and basic dynamic programming cover the large majority of questions.
Understand Big O — you’ll be asked about the complexity of your solution constantly. Be fluent.
Practice under realistic conditions — with a timer, talking out loud, ideally with a friend watching or in a mock interview.
The single biggest mistake in coding interviews is going silent — a wrong-but-thoughtful approach becomes indistinguishable from being lost.
A strong approach to any problem — tap each step
Clarify the problem
Ask about inputs, edge cases, and constraints before writing anything. This alone signals maturity.
Everyone gets stuck — it’s practically built into the format. Stay verbal, start simple, take hints gracefully, breathe.