Every few months the internet declares LeetCode dead. Every few months, senior engineers who believed it walk into an interview, get handed an algorithm problem, and rediscover that it isn’t. The honest picture is more nuanced than either “grind endlessly” or “it’s over” — and understanding it is what actually separates senior offers.

First, the myth-check: LeetCode isn’t dead

It is tempting to believe the algorithmic coding interview has been retired, especially as AI makes rote coding cheap. The data says otherwise. In interviewing.io’s 2025 survey, not a single one of 52 respondents from FAANG companies said their employer had moved away from algorithmic questions. At the companies most senior engineers actually want to join, the coding screen is still very much alive.

So if your target is top-tier, you do not get to skip it. The algorithm round remains the price of admission. What has changed is what that round decides.

The algorithm round is a gate, not the decider

Two facts reframe the whole thing.

First, the signal from a coding interview is noisier than most people assume. interviewing.io’s analysis across 1,316 interviews found that only about 20% of candidates were consistent performers — even genuinely strong engineers fail a technical interview roughly one time in five. A single algorithm round is closer to a coin-weighted-in-your-favour than a precise measurement.

Second, and more important for senior candidates: at higher levels, coding and design do different jobs. As the pattern is often described at Meta’s senior (E5) level and above, the coding round is used to decide “should we hire this person?” while system and product design is used to decide “how senior is this person?” In other words, algorithms can get you in, but design and judgment decide your level — and your level decides your offer.

That is the sentence to internalise. For a senior engineer, the marginal hour spent grinding a 400th array problem is worth far less than the hour spent getting genuinely good at system design, because the second one moves the number that matters.

What actually gets senior engineers hired

Strip away the myth and the real senior signal is consistent across companies: can you operate under ambiguity, design systems that hold up, and reason about trade-offs like someone who has shipped and maintained real software?

That shows up in a few rounds. System design is the big one — not trivia about specific technologies, but the ability to take a vague prompt, ask the right clarifying questions, sketch a workable architecture, and defend your choices as load and requirements change. It is worth understanding how senior system-design rounds actually work before you sit one, because the format rewards structure and rusts anyone who improvises. Alongside it sits the harder-to-name quality interviewers are really buying: the judgment that decides senior offers — knowing what to build, what to leave out, and where a design will quietly fail.

Communication threads through all of it. At senior level the interview is a simulation of working with you, and the candidate who states assumptions, names trade-offs, and revises gracefully outperforms the one who silently produces a correct diagram.

How to prepare, given all this

The efficient strategy follows directly from how the rounds are weighted. Clear the algorithm floor — you cannot skip it at top companies — but do it efficiently rather than obsessively, aiming for solid competence, not competitive-programming mastery. Then invest disproportionately in the rounds that actually set your level: system design and the judgment behind it. And practise the way it is scored, out loud and under time, because reasoning is a performance skill — it helps to rehearse the rounds that matter rather than only reading solutions.

The bottom line

“Beyond LeetCode” does not mean beyond effort. It means beyond the assumption that the algorithm round is the whole game. For senior engineers, it is the gate; system design and judgment are the decider. Spend your preparation where the offer is actually won — on the rounds that answer not just “should we hire them?” but “how senior are they?”

Sources: interviewing.io’s 2025 survey and interview analysis, as reported by Interview Copilot.