Developer Reference

https://stackwright.polsia.app

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{
  "success": false,
  "error":   "ERROR_CODE",
  "message": "Human-readable description"
}

{
  "resume_text": "Jane Doe — Senior Software Engineer\n\nExperience:\n• Stripe (2021–2024) — Led migration of payment processing service from monolith to microservices. Reduced p99 latency by 40%.\n• Airbnb (2018–2021) — Backend engineer on Payments team. Built real-time fraud detection pipeline processing 2M events/day using Kafka + Python.\n\nSkills: Python, Go, PostgreSQL, Kafka, Redis, Kubernetes, AWS\n\nEducation: BS Computer Science, Stanford 2018",

  "job_description": "Senior Backend Engineer — Payments Platform\n\nWe're looking for a senior engineer to lead backend development on our payments infrastructure.\n\nRequired:\n• 5+ years backend engineering experience\n• Python or Go proficiency\n• Experience with high-throughput distributed systems\n• PostgreSQL and Redis\n\nNice to have: Kafka, Kubernetes, prior fintech experience"
}

{
  "success": true,
  "cached": false,
  "fit_score": 91,
  "strengths": [
    "Led microservices migration at Stripe — directly relevant to the payments platform work",
    "Built high-throughput fraud detection pipeline at Airbnb using Kafka + Python — exact stack match",
    "5+ years senior backend experience in fintech environments"
  ],
  "gaps": [
    "No explicit mention of direct team leadership or mentorship"
  ],
  "skill_matches": [
    { "skill": "Python",     "level": "strong",  "evidence": "Listed in skills; used in fraud detection pipeline at Airbnb" },
    { "skill": "PostgreSQL", "level": "strong",  "evidence": "Listed in skills section" },
    { "skill": "Kafka",      "level": "strong",  "evidence": "Kafka used in Airbnb fraud detection pipeline (2M events/day)" },
    { "skill": "Redis",      "level": "strong",  "evidence": "Listed in skills section" },
    { "skill": "Kubernetes", "level": "partial", "evidence": "Listed in skills but no specific project evidence" }
  ],
  "experience_alignment": "Jane has exactly the experience profile this role requires: senior-level, payments domain, high-throughput systems. Her trajectory from Airbnb Payments to Stripe microservices work mirrors the challenge described in the JD.",
  "overall_assessment": "Strong hire recommendation. Jane's background is an exceptionally precise match — fintech experience, correct stack, demonstrated impact at scale. The only open question is leadership scope, worth probing in the interview.",
  "processing_time_ms": 1847
}

{
  "success": true,
  "cached": false,
  "questions": [
    {
      "question":            "Walk me through how you'd design a payment retry system that handles idempotency across distributed services.",
      "type":               "system_design",
      "difficulty":         "senior",
      "evaluation_criteria": "Look for: idempotency keys, at-least-once delivery, dead letter queues, and explicit mention of failure modes.",
      "follow_ups": [
        "How would you handle the case where the payment processor returns a timeout but the charge went through?",
        "What's your strategy for reconciliation if a retry creates a duplicate charge downstream?"
      ]
    }
  ],
  "job_context": {
    "key_skills_extracted": ["Python", "distributed systems", "Kafka"],
    "seniority_level":     "senior",
    "role_type":           "backend"
  },
  "processing_time_ms": 2103
}