About SkillFlow

Why we built this

SkillFlow started out of frustration with the standard advice: "just grind LeetCode." We did that. We went through dozens of technical screens, made it to FAANG onsites, and learned the hard way that grinding 300 random problems and grinding 300 targeted problems are completely different experiences — and completely different outcomes.

The problem with most prep platforms is that they let you choose what to practice. That sounds like a feature. It isn't. Left to their own devices, engineers practice what they're already good at. Arrays feel comfortable, so they do more arrays. Dynamic programming feels hard, so they avoid it. Then they walk into an interview and get a DP question.

SkillFlow removes that choice. The platform tracks your proficiency across 10 coding topics and picks the next problem based on where you're actually weakest — not where you're most comfortable. That's the core idea.

Who we are

SkillFlow is led by Alex Chen, a software engineer with experience across multiple engineering organizations. Alex has been on both sides of the technical interview table — as a candidate preparing for FAANG-level interviews, and as an interviewer evaluating candidates. That dual perspective is what shapes how SkillFlow works.

The editorial content on this site — platform comparisons, prep guides, industry statistics — is written and reviewed by the SkillFlow team with the same standard: honest, specific, and based on first-hand experience with the interview process.

What makes SkillFlow different

• Adaptive problem selection — the algorithm picks the one problem that moves your weakest topic the most, every session.
• Skill Score (1–1000) that moves both ways — a score that only goes up isn't a signal. Ours drops when you struggle. That's what makes it honest.
• AI follow-up interviews — after you submit, GPT-4 asks the follow-up questions a real interviewer would ask. "What's the time complexity?" "Why this approach?" "What would you do with 10x the input?" Your answers are scored.
• Numerical difficulty (1–100) — not crowd-sourced Easy/Medium/Hard labels. A problem rated 67 is harder than one rated 54. Full stop.
• Free, no paywall — the core platform is completely free. No credit card, no trial limits, no artificial friction.

Who it's for

Software engineers preparing for technical interviews in the next 4–12 weeks. New grads, career switchers, and FAANG-track candidates who want a focused, adaptive prep experience — not another massive library to browse.

If you want to pick your own problems every session, LeetCode is fine for that. SkillFlow is for people who want the platform to make that decision for them, based on data.

Get in touch

Questions, feedback, or partnership inquiries: [email protected]