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To give the Actual Interview Experience

Product Requirement Document (PRD)

✨Product Name: MockJam

🔸Subtitle: Practice real PM interviews. Anytime. Anywhere.

✨🧭 Vision

To help aspiring and practicing product managers build clarity under pressure by simulating real PM interviews - solo, repeatable, and brutally honest.

✨🎯 Problem

Most PM candidates fail not because they don’t know the frameworks -
they fail because they don’t know how to think clearly in the moment.

Mock interviews work, but:

  • Finding serious partners is hard
  • Feedback is either sugar-coated or vague
  • People feel nervous or unprepared
  • Realism is missing - nothing feels like the actual interview

So they stop doing mocks.

There’s no LeetCode for PMs.
No habit-forming practice loop.
No space to fail safely, learn fast, and build thinking muscle.

✨🧪 Solution (v1 Scope)

A solo mock interview tool for PMs that:

  • Asks real PM questions (from Product Sense to Strategy)
  • Reacts like a real interviewer using AI
  • Gives structured, sharp, no-fluff feedback
  • Removes social hesitation (no peer needed)
  • Can be repeated anytime

✨👤 Target User

  • PM job switchers (tech → PM, APM → PM)
  • Candidates in interview prep sprints
  • PMs leveling up for FAANG-style rounds
  • People who prefer async, private prep over peer groups

✨✍️ Core User Flow (v1)

  1. Landing Page

    • Value proposition + sample questions + screenshots
    • CTA: "Start your first mock free"

  2. Signup

    • Google Auth (Firebase)
    • Store uid + email only

  3. Mock Interview Flow

    • User selects category (Product Sense / Metrics / etc.)
    • Interview starts with warm intro
    • Candidate responds (typed or voice)
    • AI evaluates based on prompt logic
    • Returns feedback as structured JSON:
      • emotionalReaction
      • pushThinking
      • optionalTacticalNudge

  4. Post-Interview

    • Shows full transcript + feedback
    • Option to retry question
    • Save session to history

  5. History Page

    • View past mocks + feedback
    • Compare thinking evolution

✨📐 Feedback System (Covered in separate PRD but summary below)

  • Based on real interview triggers
  • 6-dimension rubric: Goal, User, Friction, Prioritize, Move, Metric
  • Only evaluates after commitment
  • Interrupts vague or spiraling logic
  • Never over-praises. Only reacts when it matters.

(See: MockJam_FeedbackSystem_PRD.md for full details)

✨🚫 Not in v1 (Intentionally)

  • Peer-to-peer mock sessions
  • Leaderboard / gamification
  • Self-rating / star system
  • Resume review / case study upload
  • Video recording

These add friction or require moderation.
V1 is all about flow, repetition, habit.

✨📊 Success Metrics

🔸Activation

  • % of users who start a mock within 10 minutes of signup

🔸Retention

  • % of users who complete 3+ mocks in first 5 days
  • % of returning users in Week 2

🔸Quality

  • % of users who say feedback “felt like a real interview” (survey)
  • % of mocks with full answer + rubric triggered

🔸Behavior

  • Median mocks per active user (weekly)
  • Most common dropout point in the flow

✨🛠️ Tech Stack

  • Frontend: Next.js + Tailwind
  • Backend: Firebase Functions + Firestore
  • Auth: Firebase Auth (Google only in v1)
  • AI Layer: OpenAI API (GPT-4), custom prompt
  • Audio (v2): Deepgram or Whisper for voice input (if used)
  • Payments (post-launch): Razorpay (India) + Paddle (Global)

✨🔁 Feedback Loop

  • Internal usage: I use it daily to improve prompt and logic
  • Early user testers from HelloPM and friends
  • Feedback via 1-click emoji + optional text (“Did this feel real?”)

✨🧱 Moat (What Makes MockJam Different)

  • Built for solo practice, no scheduling overhead
  • System simulates real tension, not just structure
  • High-quality prompt system refined with every real mock
  • Structured feedback that teaches how to think, not just what to say
  • Product is shaped by personal need + firsthand insights, not theory

✨🗺️ Future Ideas (Not in v1)

  • Streak system (mock daily, maintain streak)
  • Scenario-based interview sets (e.g., “You’re PM at Spotify...”)
  • Add follow-up loops (multi-question drills)
  • Community leaderboard (only if it feels safe & fun)
  • Audio-based input with real-time interruption

✨🤝 Team

  • Solo builder: Design, frontend, backend, prompt, infra - all me
  • Goal: Launch > Learn > Iterate fast > Then build outward

✨🧵 Closing Line

MockJam isn't about simulating a perfect interview.
It's about making you practice like it’s real -
so when it is, you’re already used to the pressure.