I will diagnose and fix your spring boot API issue

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Junsoo Kim
Einige Informationen werden in englischer Sprache angezeigt.

Über diesen Service

Blocked by a Spring Boot API error? Basic gives you a definite evidence-based diagnosis and next action; Standard and Premium add a focused tested fix for reproducible defects.


Basic guarantees a reproduction result, cause evidence, affected path, fix feasibility, and exact next action. If a narrow patch fits the 90-minute diagnosis, I include it with test evidence. Standard fixes one reproducible bug within 3 active hours; Premium fixes up to three related bugs in one module within 6 active hours.


PF06 is a self-initiated Java 21 demonstration of a reproduced 500, focused patch, and five tests, not paid-client or production evidence.


I reproduce, diagnose, patch where included, and verify. Message me with the failing command, sanitized stack trace, versions, and expected behavior.


Includes 14-day correction of reproducible defects in the delivered diagnosis or patch. Direct production incidents, major migrations, architecture-wide refactors, external permissions, large untested legacy investigations, infrastructure repair, security testing, and fixes for unreproducible defects are not included.

Lerne Junsoo Kim kennen

Junsoo Kim

Web and Automation Developer

  • AusSüdkorea
  • Mitglied seitJuli 2026
  • Sprachen

    Koreanisch, Englisch
With 3+ years of professional experience in systems integration (SI), backend development, and business automation, I build responsive websites, workflow automations, Python data-cleaning tools, and Spring Boot API fixes. I turn requirements into practical deliverables by defining data flows, business rules, endpoints, and acceptance criteria. You receive clean source files, tested results, and a clear handoff. My portfolio includes self-initiated demos using fictional or anonymized data. Send me your goal, current setup, and deadline, and I can recommend the right scope.

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