You will get a diagnosed and fixed React or TypeScript frontend defect
Project details
I will diagnose and repair a reproducible React or TypeScript frontend defect in an existing codebase. This service focuses on clear bugs such as broken interactions, state or rendering issues, responsive regressions, or cross-component behavior—not new features or redesigns. You receive a focused patch, targeted regression checks, before-and-after evidence, run instructions, and concise handoff notes. Scope is confirmed before work begins. Production deployment, paid third-party access, inaccessible or minified code, security testing, and unrelated refactoring are excluded unless separately agreed.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device CompatibilityWhat's included
| Service Tiers |
Starter
$35
|
Standard
$75
|
Advanced
$150
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 2 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Frequently asked questions
About Javier
API & Automation Developer | Python, TypeScript, n8n, Pine Script
Valencia, Spain - 10:34 am local time
Services I can deliver:
• Python and Node/TypeScript API debugging
• n8n workflows, webhooks, data mapping, retries, deduplication, and error paths
• Pine Script logic, alerts, exits, and repainting checks
• CSV/CRM cleanup with validation and QA reports
• English-to-Spanish technical translation and proofreading
• API/product documentation, market research, and functional QA
For a first engagement, send the source files or failing behavior, a representative sample, expected output, and any terminology or style requirements. I confirm the definition of done, delivery time, and fixed price before starting. I prefer redacted fixtures and test credentials; production secrets are unnecessary for most jobs. Every delivery includes the agreed artifact, verification evidence, and limitations. I do not promise trading profits, guaranteed uptime, or results outside the agreed tests.
Steps for completing your project
After purchasing the project, send requirements so Javier can start the project.
Delivery time starts when Javier receives requirements from you.
Javier works on your project following the steps below.
Revisions may occur after the delivery date.
Reproduce and diagnose the defect
I reproduce the reported behavior, isolate the failing component or state transition, and confirm the root cause before changing code.
Implement the focused repair
I make the smallest maintainable React or TypeScript change that corrects the defect without adding unrelated scope.