I will fix your react or nodejs bug fast

L
loeeblein
L
loeeblein
Leandro
fix your react or nodejs bug fast
Full Screen
fix your react or nodejs bug fast

About this gig

Having issues with your React or Node.js application?


I will quickly identify and fix bugs in your code so your system runs smoothly again.


What I can fix:

- React errors and broken components

- Node.js backend issues

- API bugs and failed requests

- Performance problems

- Crashes and unexpected behavior


Why choose me:

- Fast response and delivery

- Clean and efficient solutions

- Real experience with production systems


Available to start immediately.


Send me a message and Ill take a look right away.

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Operating systems

  • Frontend framework

    • Angular
    • AngularJS
    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Laravel
    • FastAPI
    • NestJS
    • Next.js
    • Spring

Get to know Leandro

Leandro

Fullstack Developer

  • FromBrazil
  • Member sinceDec 2025

  • Languages

    Portuguese, English
I’m a Fullstack Developer focused on building, fixing and optimizing systems for real performance. I also specialize in Windows optimization and game performance tuning, helping users and businesses get the maximum performance out of their systems. What I can help you with: - Fix bugs in React, Node.js and web applications - Debug and improve APIs - Optimize slow systems and applications - Windows performance tuning (debloat, latency, FPS boost) - Game optimization (CS2, FPS stability, input lag reduction) - System cleanup and resource optimization

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