InterviewBit offers a structured learning path for coding interviews, with problems ranked by difficulty, company-specific question libraries, and detailed solutions. It covers data structures, algorithms, system design, and more, tailored to FAANG-level interviews.
Pramp pairs candidates with peers for live mock interviews in coding, system design, and behavioural topics. Both participants gain interviewer and interviewee experience, with optional AI-generated feedback after sessions.
CodeSignal provides coding challenges and proctored assessments widely used by recruiters and hiring teams. Candidates can practise with company-specific interview scenarios and receive AI-generated insights on their performance.
LeetCode hosts over 3,000 coding problems with company-specific filters (Google, Amazon, Meta, etc.), discussion forums, editorial solutions, and a vibrant community. Premium subscribers unlock curated study plans and premium editorial explanations.
HackerRank offers coding challenges across multiple languages, company-specific interview prep tracks, and skills certifications. It emphasises hands-on coding and is used by both job-seekers and recruiters for assessments.
Educative provides structured, interactive courses on coding interviews, system design, and behavioural topics. Lessons include code editors, visualisations, and guided problem-solving, making complex topics more approachable.
AlgoExpert features 160+ video solutions for coding problems, system design questions, and a custom coding environment. Each video includes detailed walkthroughs and covers core data structures and algorithmic patterns.
DesignGurus (founded by ex-Google and ex-Amazon engineers) offers in-depth courses on system design patterns, mock interviews with experts, and comprehensive guides for behavioural questions. Highly focused on senior-level interview prep.
Interviewing.io connects candidates with anonymous mock interviewers from companies like Google, Apple, Amazon and others. Sessions are recorded, and paid participants can get detailed feedback. The platform also helps practise whiteboarding and system design.
Exponent covers technical coding, system design, product management, and behavioural interviews. The platform features video explanations, interactive coding practice, and AI-powered feedback on recorded mock interviews.
Positions 1, 2 and 3 are available to buy for twelve months. Everyone below moves down a place, and the bottom entry comes off.
LeetCode's free tier offers 3,000+ problems ideal for beginners, though the basic interface can overwhelm newcomers. Alternatively, Educative's 'Grokking' courses and Pramp's free mock sessions provide more structured, guided experiences. For visual learners, YouTube channels and free resources from the above platforms offer good starting points before committing to paid subscriptions.
Both are valuable and complementary. LeetCode and similar platforms build pattern recognition and algorithmic thinking; mock interviews (via Pramp, Interviewing.io, or DesignGurus) simulate real pressure, communication, and time constraints. Most successful candidates combine self-paced problem-solving with 5 to 10 live mocks in the final 2 to 4 weeks before their actual interviews.
Exponent and some premium tiers of Pramp offer AI-generated post-interview analysis on communication and problem-solving approach. However, real-time feedback during a live interview typically comes from human interviewers. CodeSignal's assessments include AI analytics on code quality, but not live guidance. For immediate feedback mid-interview, peer platforms like Pramp with experienced interviewers remain the best option.