{
  "session": {
    "id": "qeHlAuuSfdex",
    "role_title": "Senior Java Backend",
    "difficulty": "hard",
    "created_at": 1777354092902,
    "ended_at": 1777354097227,
    "target_question_count": 4,
    "target_duration_min": 10
  },
  "turns": [
    {
      "idx": 0,
      "role": "interviewer",
      "text": "Hello, I’m [Your Name], a senior engineer here. Thanks for joining. Let’s start with Java: you mentioned tuning from G1 to ZGC—what specific latency or throughput problem drove that migration, and how did you measure the improvement?",
      "at": 1777354094763
    },
    {
      "idx": 1,
      "role": "candidate",
      "text": "[skipped — candidate chose not to answer]",
      "at": 1777354094812
    },
    {
      "idx": 2,
      "role": "interviewer",
      "text": "Understood. Let’s move to system design: design a payment authorization service that must handle 5k TPS with under 100ms p99 latency, using Postgres and Kafka—walk me through the data flow and how you’d avoid duplicate charges during retries.",
      "at": 1777354097173
    }
  ],
  "feedback": {
    "overall_score": 1,
    "verdict": "strong-no-hire",
    "dimensions": {
      "technical_depth": {
        "score": 0,
        "evidence": "Candidate skipped the only technical question about JVM tuning from G1 to ZGC.",
        "gaps": "No demonstration of JVM tuning knowledge or any technical depth."
      },
      "system_design": {
        "score": 0,
        "evidence": "Candidate did not respond to the system design question for a payment authorization service.",
        "gaps": "No evidence of system design ability for high-throughput services."
      },
      "communication": {
        "score": 0,
        "evidence": "Candidate provided no verbal responses throughout the interview."
      },
      "role_fit": {
        "score": 1,
        "evidence": "Resume lists 10 years backend, 5 in fintech, but candidate refused to engage in interview."
      }
    },
    "strengths": [
      "Resume indicates relevant experience: 10 years backend, fintech, Java/Spring Boot, JVM tuning."
    ],
    "weaknesses": [
      "Refused to answer the first interview question, providing no technical evidence.",
      "Did not respond to the system design question, leaving design skills unassessed.",
      "Overall lack of engagement suggests unwillingness to participate in the interview process.",
      "No opportunity to evaluate communication or problem-solving skills.",
      "Cannot verify any of the claims made on the resume."
    ],
    "study_plan": [
      "Practice articulating past technical decisions in interview settings, especially JVM tuning choices.",
      "Study JVM garbage collection specifics (G1, ZGC) and how to measure latency/throughput improvements.",
      "Review system design for high-throughput payment services with idempotency and exactly-once semantics.",
      "Develop ability to handle interview pressure and respond to questions even if uncertain.",
      "Prepare concrete examples from past work to demonstrate depth and trade-offs.",
      "Engage in mock interviews to build comfort with behavioral and technical questioning."
    ],
    "best_answer": {
      "turn_idx": 0,
      "why": "Candidate did not provide any answers; no best answer available."
    },
    "worst_answer": {
      "turn_idx": 1,
      "why": "Candidate chose not to answer the only technical question, providing no signal of competence."
    },
    "turn_feedback": []
  }
}