I will audit, debug and optimize your system with nodejs, spring

V
viet_tran_quoc
V
viet_tran_quoc
Viet Tran
audit, debug and optimize your system with nodejs, spring
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audit, debug and optimize your system with nodejs, spring
Full Screen
Full Screen
audit, debug and optimize your system with nodejs, springaudit, debug and optimize your system with nodejs, springaudit, debug and optimize your system with nodejs, spring

About this gig

Is your backend system slow, unstable, or difficult to maintain?

I'm a Full-Stack Software Engineer with 4+ years of experience building SaaS and B2B applications using Node.js, NestJS, TypeScript, Java, Java SpringBoot, PostgreSQL, MySQL, and Redis.

I help businesses identify and fix the root causes of backend issues, not just patch the symptoms.

What I can help you with:

  • Debugging REST APIs and complex business logic
  • Optimizing slow database queries and API performance
  • Improving Redis caching strategies
  • Reviewing authentication, RBAC, and access permissions
  • Refactoring legacy or AI-generated backend code
  • Troubleshooting third-party API integrations
  • Improving backend code quality and maintainability

What you can expect:

  • Clear technical analysis and recommendations
  • Clean, maintainable code (when fixes are included)
  • Testing and documentation for agreed changes
  • Professional communication and reliable delivery

Please contact me before ordering to discuss your backend issues and project requirements.

  • Programming language

    • Java

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Design

  • Frontend framework

    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • NestJS
    • Next.js
    • Node.js
    • Spring
    • Spring Boot

  • AI & low/no code builders

    • Cursor
    • Antigravity
    • Other

Get to know Viet Tran

Viet Tran

Software Engineer

  • FromVietnam
  • Member sinceOct 2026

  • Languages

    Vietnamese, English
Hi, I'm a Full-Stack Developer with over 4 years of experience building modern, reliable web solutions. I work with React, Next.js, TypeScript, Node.js, NestJS, PostgreSQL, Java/Spring, Redis, and Kafka. I can help you build business websites, landing pages, dashboards, and e-commerce platforms, or improve existing products through bug fixes, performance optimization, and ongoing maintenance. My experience includes projects such as Gemtheon and VNPAY's CES-SDK. I focus on intuitive UI/UX, clean code, and fast, scalable applications. Let's build something great together!

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