You will get integrate REST APIs into your app or build a backend API
Project details
Need your frontend connected to a REST API? Or a backend API built from scratch?
I develop and integrate REST APIs for React, JavaScript, and .NET-based applications — with experience on both sides of the stack. At a digital marketing agency I integrated APIs across dozens of client projects; at the Central Bank of Cuba I built enterprise backend services using C# and ASP.NET.
I handle:
• Connecting your React or JavaScript frontend to any REST or RESTful API
• JWT and OAuth2 authentication flows
• Backend API development with C# / ASP.NET or Node.js
• Database design and queries (SQL Server, MySQL)
• Third-party integrations (Stripe, HubSpot, Zapier, or custom APIs)
• Full Postman/Swagger documentation
Every integration is tested, error-handled, and documented so your team can maintain it after delivery. No black boxes.
I develop and integrate REST APIs for React, JavaScript, and .NET-based applications — with experience on both sides of the stack. At a digital marketing agency I integrated APIs across dozens of client projects; at the Central Bank of Cuba I built enterprise backend services using C# and ASP.NET.
I handle:
• Connecting your React or JavaScript frontend to any REST or RESTful API
• JWT and OAuth2 authentication flows
• Backend API development with C# / ASP.NET or Node.js
• Database design and queries (SQL Server, MySQL)
• Third-party integrations (Stripe, HubSpot, Zapier, or custom APIs)
• Full Postman/Swagger documentation
Every integration is tested, error-handled, and documented so your team can maintain it after delivery. No black boxes.
Programming Languages
ASP.NET, C#What's included
| Service Tiers |
Starter
$280
|
Standard
$620
|
Advanced
$1,300
|
|---|---|---|---|
| Delivery Time | 5 days | 12 days | 22 days |
Number of Revisions | 2 | 3 | Unlimited |
Number of Pages | 2 | 3 | 9 |
Design Customization | |||
Content Upload | - | - | |
Responsive Design | - | - | |
Source Code | - | - |
About Brian
WordPress Developer | Elementor | Speed Optimization | Bug Fixes | Cus
Cancun, Mexico - 9:14 pm local time
I specialize in fixing WordPress issues, improving website performance, customizing themes/plugins, and building conversion-focused landing pages using Elementor.
Currently, I work as a WordPress Developer at an international marketing agency, where I maintain and optimize multiple client websites daily.
Here’s what I can help you with:
• Fix WordPress errors and bugs
• Elementor landing pages
• Website speed optimization
• Theme & plugin customization (PHP, JS, CSS)
• Website migrations
• Technical SEO improvements
• Responsive design fixes
• Ongoing website maintenance
I also have a strong background in C#, .NET and SQL Server, which allows me to understand complex systems and integrations beyond typical WordPress development.
I’m reliable, detail-oriented and I communicate clearly with clients.
If your website needs improvements or fixes — I’m ready to help.
Steps for completing your project
After purchasing the project, send requirements so Brian can start the project.
Delivery time starts when Brian receives requirements from you.
Brian works on your project following the steps below.
Revisions may occur after the delivery date.
Technical Discovery
I review your existing codebase, API documentation, or backend requirements. We define the endpoints, data structures, authentication method, and integration scope together.
Architecture & Planning
I design the integration flow — how data moves between your frontend, backend, and any third-party services. You approve the plan before any code is written.