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I will fix bugs and improve performance in react or javascript apps
HarbsHCE
About this gig
I will fix reproducible bugs and improve basic performance in React, JavaScript, TypeScript, HTML/CSS, or Electron projects.
This Gig is ideal for small issues such as broken buttons, forms, navigation, UI layout problems, incorrect calculations, console errors, local storage issues, and simple slowdowns.
Please provide your project files or repository link, a clear description of the problem, expected behavior, and steps to reproduce it.
The Basic package covers one small, reproducible issue only. Large rewrites, new features, backend work, databases, authentication, external APIs, security audits, and major performance refactors require a custom offer.
Revisions apply only to the originally reported issue.
Get to know HarbsHCE
HarbsHCE
Software Developer of Web Tools, Scripts, Simulators and automation
- FromBrazil
- Member sinceJul 2026
Languages
Portuguese, English
Hi, I’m Harbs, an independent software developer and Production Engineering student behind HCE. I create practical web tools, dashboards, scripts, automation workflows, and interactive simulators.
My projects combine software development with engineering-oriented problem solving, including production and logistics analysis, data visualization, economic simulations, ergonomics, and gameplay systems. I focus on understanding each goal, communicating clearly, and delivering organized, functional, and maintainable solutions.
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Other Software Development Services I Offer
FAQ
What do you need to start?
Please send the project files or repository link, a description of the issue, expected behavior, steps to reproduce it, screenshots, and any console error messages.
What is included in the Basic package?
The Basic package covers one small, reproducible frontend bug or UI/functionality issue in an existing project.
Can you fix bugs in React, JavaScript, TypeScript, or Electron apps?
Yes. I work with React, JavaScript, TypeScript, HTML/CSS, and Electron-based projects.
Can you improve my app’s performance?
I can investigate and improve simple, identified performance issues. Large-scale optimization, backend bottlenecks, database tuning, or architecture rewrites require a custom offer.
Can you add a new feature instead of fixing a bug?
Small additions may be possible, but new features are not included in the basic bug-fix packages. Please message me first so I can review the scope.
What happens if the bug cannot be reproduced?
Please provide clear reproduction steps and a working project environment. If the issue cannot be reproduced from the provided files or instructions, I may need more information before starting.
Do you work with backend, databases, login systems, or APIs?
These are not included by default. Please contact me before ordering for backend, database, authentication, external API, or complex integration work.
Will you fix unrelated bugs found during the work?
The order covers only the agreed issue or package scope. Unrelated bugs can be added through an extra or custom offer.
