I will fix java spring boot backend bugs and API issues

R
rao_zhicheng
R
rao_zhicheng
Rao Z
fix java spring boot backend bugs and API issues
Full Screen
fix java spring boot backend bugs and API issues

About this gig

I will debug and fix Java Spring Boot backend bugs, REST API errors, startup failures, database issues, and integration problems.


I can help with:

- Spring Boot runtime exceptions and failed startup issues

- REST API bugs, failed requests, wrong responses, and validation errors

- MySQL, PostgreSQL, Oracle, Redis, or RabbitMQ related backend issues

- Integration problems between services, microservices, and third-party APIs

- Performance bottlenecks and deployment-related backend errors


I have 5 years of Java backend experience in fintech and microservice systems. Please message me before ordering so I can confirm the issue, required access, expected fix scope, and delivery timeline.

  • Programming language

    • Java

  • Expertise

    • Performance
    • Databases
    • Source control

  • Backend framework

    • Spring

Get to know Rao Z

Rao Z

Java Backend Engineer

  • FromChina
  • Member sinceMay 2026

  • Languages

    English
I am a Java backend engineer with 5 years of experience in FinTech systems, microservices and enterprise integration. I have a strong hands-on background in securities/OTC derivatives platforms, market data ingestion, batch reporting and production delivery. I am able to own backend development, deployment support, issue diagnosis and client-facing technical coordination.

Other Software Development Services I Offer

Related tags