I will diagnose backend bugs in your go java or python project

Y
yaolianjie
Y
yaolianjie
Lianjie Yao
diagnose backend bugs in your go java or python project
Full Screen
diagnose backend bugs in your go java or python project
Full Screen
diagnose backend bugs in your go java or python projectdiagnose backend bugs in your go java or python project

About this gig

Is your existing backend failing or returning unexpected API results?


I will investigate ONE reproducible issue in a Go, Java or Python project. You receive a written report with reproduction steps, findings, likely root cause, recommended next steps and a separate repair estimate.


I have 4+ years of software engineering experience across backend services, transaction workflows and AI agent platforms. I also work with MySQL and Redis.


The basic package covers diagnosis. Repairs, feature development, migrations and production changes require an agreed scope and separate quote. If the supplied materials do not allow reproduction, I document the blockers and information needed to continue.


Message me before ordering with your stack, expected behavior, actual behavior and a sanitized error example. I work evenings and weekends in China time. English communication is supported by translation tools when needed.


Gallery examples illustrate deliverable structure, not past client projects.

  • Programming language

    • Go
    • Java
    • Python

Get to know Lianjie Yao

Lianjie Yao

Backend Developer, Go, Java, Python and AI Agents

  • FromChina
  • Member sinceOct 2026
  • Avg. response time1 hour

  • Languages

    Chinese, English
Backend developer with 4+ years of experience and a master's in Software Engineering from Wuhan University. I work with Go, Java, Python, TypeScript, MySQL and Redis. I offer legacy project debugging, feature development, API integration, deployment and reliability improvements. My experience covers insurance workflows, orders and fulfillment, and multi-agent platforms, including tool calling, MCP and RAG. Available evenings and weekends for part-time projects. I focus on clear scope, maintainable code, validation and handover documentation.

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