You will get your React or Next.js dashboard template connected to your real API
Rising Talent
Project details
You bought a dashboard template and discovered every table, chart and login is fake. The design is perfect — nothing is connected.
That's what I fix. I wire your React or Next.js template to your real API: authentication with protected routes, a proper HTTP layer with error handling, tables with server-side paging and filters, CRUD forms with validation, and charts running on your actual data.
Most freelancers in this niche only touch the frontend. I also build backends in .NET and Node, so when your API is missing an endpoint, returns the wrong shape or blocks CORS, I fix that too instead of sending you back to another developer.
I build and run CreaTuCV, a .NET 9 and Next.js SaaS in production with thousands of monthly users — the same integration work, on my own product.
Send me your template name and API docs and I'll tell you exactly which
tier fits before you buy.
That's what I fix. I wire your React or Next.js template to your real API: authentication with protected routes, a proper HTTP layer with error handling, tables with server-side paging and filters, CRUD forms with validation, and charts running on your actual data.
Most freelancers in this niche only touch the frontend. I also build backends in .NET and Node, so when your API is missing an endpoint, returns the wrong shape or blocks CORS, I fix that too instead of sending you back to another developer.
I build and run CreaTuCV, a .NET 9 and Next.js SaaS in production with thousands of monthly users — the same integration work, on my own product.
Send me your template name and API docs and I'll tell you exactly which
tier fits before you buy.
Programming Languages
JavaScript, ASP.NET, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, SecurityWhat's included
| Service Tiers |
Starter
$250
|
Standard
$450
|
Advanced
$700
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 8 days |
Number of Revisions | 1 | 2 | 2 |
Number of Pages | 4 | 8 | 12 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$60
Additional Page
(+ 1 Day)
+$180
Backend endpoint fixes
(+ 2 Days)
+$200
Export tables to Excel or CSV
(+ 1 Day)
+$150
Charts & data visualization
(+ 1 Day)
+$120Frequently asked questions
1 review
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AR
Alejandro R.
Jul 2, 2026
React Developer to Fix Time-Cycle Bug (React/Next.js/.NET/Node.js)
Excellent experience working with Sergio. He resolved the time-cycle bug in React quickly and accurately, demonstrating a strong technical command of both React/Next.js and its integration with .NET and Node.js APIs. The delivered code was clean, well-structured, and addressed edge cases (time zones, intervals, re-renders) without introducing side effects. Highly recommended for complex debugging tasks that require attention to detail and good development practices.
About Sergio
Full Stack .NET & Next.js Dev | API Performance, Bug Fixes, AI, SaaS
Tarija, Bolivia - 6:18 pm local time
Im Full Stack Developer with +3 years of software development experience, building SaaS products and integrating AI APIs.
I can help you with:
✅ Full-stack web app development
✅ Frontend development with React, Next.js, Astro, TypeScript, and Tailwind CSS
✅ REST API development with .NET Core, ASP.NET Core, Node.js, and Express
✅ SQL database design with SQL Server, PostgreSQL, and MySQL
✅ Authentication systems: JWT, OAuth, role-based access
✅ Third-party API integrations
✅ Docker and Docker Compose deployments
✅ Bug fixing, refactoring, and performance improvements
Why work with me:
🔹 Clean, maintainable code
🔹 Clear communication and realistic timelines
🔹 Backend experience for reliable systems
🔹 Frontend focused on speed, usability, and responsive design
🔹 I don’t disappear mid-project
Whether you need a complete web app, a dashboard, an API integration, or help improving an existing system, I can help you move faster with reliable code.
Send me a message and I’ll get back to you within a few hours.
Steps for completing your project
After purchasing the project, send requirements so Sergio can start the project.
Delivery time starts when Sergio receives requirements from you.
Sergio works on your project following the steps below.
Revisions may occur after the delivery date.
Review your template and API
I go through your template's structure and your API endpoints, map which screen consumes which endpoint, and flag anything missing or mismatched before writing code. You get a short summary of what I found.
Wire authentication and the API layer
Login, token storage, refresh handling and protected routes connected to your real endpoints, plus a centralized HTTP client with error handling and environment config. This is the foundation every screen depends on.