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I will fix bugs, upgrade framework, or optimize your backend application

Q
quangtran904
Q
quangtran904
Quang
fix bugs, upgrade framework, or optimize your backend application
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fix bugs, upgrade framework, or optimize your backend application

About this gig

Are you facing critical errors in your backend? Is your application running slow, or do you need to upgrade your framework to the latest version? Look no further!


As an expert backend and microservices architect, I will help you debug, optimize, and upgrade your application ensuring high performance and security.


What I can do for you:

Fix logical bugs, runtime errors, and crash issues.

Database query optimization (SQL/NoSQL) and indexing.

Upgrade outdated frameworks and dependencies (Node.js, Spring Boot, Go, etc.).

API integration and authentication fixes (JWT, OAuth, REST, GraphQL).

Microservices communication troubleshooting (gRPC, RabbitMQ, Kafka).


Why choose me?

Super fast delivery (under 24 hours for basic bugs).

Clean, readable, and well-commented code.

100% Secure handling of your source code.

Excellent communication & post-delivery support.


NOTE: Please contact me BEFORE placing an order so we can review your codebase and requirements together!

  • Expertise

    • Performance
    • Security
    • Design
    • Databases
    • Source control

  • Frontend framework

    • Flutter
    • Next.js
    • React.js

  • Backend framework

    • Express.js
    • FastAPI
    • NestJS
    • Next.js
    • Node.js

Get to know Quang

Quang

I will be your professional developer for web and software solutions

  • FromVietnam
  • Member sinceFeb 2022
  • Avg. response time1 hour

  • Languages

    English
Looking for a high-performance Full-Stack Developer to scale your web application? You’re in the right place. I am a professional developer specialized in architecting robust, secure, and scalable solutions. From complex backend systems and custom API integrations to full-featured web apps, I deliver clean, optimized code tailored to your business needs. I excel at building high-concurrency, data-driven systems, ensuring top-tier performance and stability. Let's turn your vision into a powerful, high-performance reality. Message me today to discuss your project!

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