You will get a precise HTML, CSS, or JavaScript Bug Fix for your Website
Project details
Is a bug breaking your website layout or functionality? Let me fix it with engineering precision.
As a Front-End Developer with a unique background in technical inspection and troubleshooting, I approach code with an analytical mindset. I don't just apply "band-aid" fixes; I investigate the root cause to ensure the error doesn't return.
What I can solve for you:
HTML/CSS Glitches: Misaligned elements, broken responsive layouts on mobile, font issues, and spacing errors.
JavaScript Errors: Console errors, non-working buttons, broken sliders, and form validation issues.
Cross-Browser Issues: Fixing elements that look wrong on Safari, Firefox, or Chrome.
I prioritize clear communication and fast turnaround. My goal is to get your site running perfectly so you can focus on your business.
As a Front-End Developer with a unique background in technical inspection and troubleshooting, I approach code with an analytical mindset. I don't just apply "band-aid" fixes; I investigate the root cause to ensure the error doesn't return.
What I can solve for you:
HTML/CSS Glitches: Misaligned elements, broken responsive layouts on mobile, font issues, and spacing errors.
JavaScript Errors: Console errors, non-working buttons, broken sliders, and form validation issues.
Cross-Browser Issues: Fixing elements that look wrong on Safari, Firefox, or Chrome.
I prioritize clear communication and fast turnaround. My goal is to get your site running perfectly so you can focus on your business.
Programming Languages
HTML & CSS, JavaScriptWhat's included
| Service Tiers |
Starter
$15
|
Standard
$40
|
Advanced
$80
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 6 days |
Number of Revisions | 2 | 4 | 8 |
Bug Investigation | |||
Fix Documentation | - | - | |
Detailed Code Comments | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$15 - $40Frequently asked questions
About Leonardo
Front-End Dev | HTML5 Canvas & Web Audio API | AI Specialist
Parnamirim, Brazil - 6:27 pm local time
Front-End Developer | AI Training Specialist | HTML5 Canvas & Web Audio API
SYNTHESIS
I am a Front-End Developer with a unique background in high-precision technical inspection (Wind Energy) and AI Training (LLMs). My transition from engineering to development has equipped me with a sharp analytical mindset. I do not just write code; I ensure it is accurate, optimized, and reliable.
MY CORE EXPERTISE:
Advanced Front-End Development: Proficient in HTML5, CSS3 (Grid/Flexbox), and JavaScript (ES6+). I specialize in building interactive web applications using complex APIs like Web Audio API, MediaRecorder API, and Canvas 2D.
AI & LLM Training: Experience as a Collaborative Writer for AI, evaluating and refining prompts/responses with high accuracy (improved model quality by approx. 79% through rigorous analysis).
Performance & SEO: I build responsive sites optimized for speed (loading under 3s) and search engines (Schema.org, Open Graph).
Troubleshooting & Precision: With years of experience in technical maintenance (GE Renewable Energy), I have a trained eye for spotting errors and implementing precise fixes, ensuring over 99% reliability in my deliverables.
WHY WORK WITH ME? I am detail-oriented and data-driven. Whether refining an AI model or debugging a complex JavaScript function, I focus on delivering consistent, high-quality results. I am looking for challenging projects where precision matters.
TECH STACK: HTML5 | CSS3 | JavaScript | Git & GitHub | WordPress | Lottie Web
Let's discuss how I can bring this level of precision to your project.
Steps for completing your project
After purchasing the project, send requirements so Leonardo can start the project.
Delivery time starts when Leonardo receives requirements from you.
Leonardo works on your project following the steps below.
Revisions may occur after the delivery date.
Delivery & Handoff
I will inform you what was fixed and provide a brief explanation of the solution. You review the work, and if everything is perfect, you approve the milestone.