You will get Build or Improve Your Backend API (Fast, Scalable, Production-Ready)

Daniel C.Status: Offline
Daniel C.

Let a pro handle the details

Buy Web Application Programming services from Daniel, priced and ready to go.
Daniel C.Status: Offline
Daniel C.

Let a pro handle the details

Buy Web Application Programming services from Daniel, priced and ready to go.

Project details

I build backend systems and APIs that are fast, reliable, and ready for real-world use.

Whether you need to build a new backend from scratch, fix an existing system, or improve performance, I focus on clean architecture, scalability, and practical solutions that work in production. I’ve worked on web apps, APIs, and integrations, helping turn ideas into stable systems used by real users.

This project is designed for:

 • Building or improving backend APIs
 • Fixing bugs or unstable systems
 • Adding new features or integrations
 • Improving performance and scalability

What you can expect:

 • Clean, maintainable code
 • Clear communication and fast delivery
 • A solution that works beyond just a demo

If your project requires more scope, I can provide a custom plan based on your needs.
Programming Languages
PHP, JavaScript, Python
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$200
Standard
$500
Advanced
$1,000
Delivery Time 2 days 4 days 7 days
Number of Revisions
123
Design Customization
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Content Upload
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Responsive Design
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Source Code
Optional add-ons You can add these on the next page.
Fast Delivery
+$50 - $200
Additional Revision
+$100

Frequently asked questions

Daniel C.Status: Offline

About Daniel

Daniel C.Status: Offline
Senior Engineer | MVPs That Ship | APIs, Web/Mobile | CMS/Ecom, AI/ML
81% Job Success
Campos dos Goytacazes, Brazil - 9:29 pm local time
Daniel here — senior software engineer focused on turning ideas into real, production-ready products.

I work mainly with startups in fintech and healthcare, building MVPs fast and getting them ready for real users. I’ve built systems across web, backend APIs, mobile, and CMS and e-commerce platforms, with a strong focus on performance, integrations, and reliability from day one.

I’m especially strong at MVPs — taking a rough idea, shipping a working product quickly, then scaling and stabilizing it as usage grows. I’ve built scalable APIs, improved performance by around 30 percent, developed CMS and e-commerce platforms with checkout, admin systems, and integrations, and designed CRM and ERP systems with real business logic.

I also handle integrations across payments, messaging, and complex workflows, and I bring strong frontend skills with React and modern JavaScript frameworks.

I focus on keeping things SIMPLE, FAST and reliable — no overengineering, just systems that work in production.

I usually step in to build MVPs, fix systems that are breaking, or help platforms scale.

Got a fintech or healthcare product, MVP, or system you want to build or improve?

Steps for completing your project

After purchasing the project, send requirements so Daniel can start the project.

Delivery time starts when Daniel receives requirements from you.

Daniel works on your project following the steps below.

Revisions may occur after the delivery date.

Review Requirements

Analyze your project details, scope, and technical needs

Development

Build or improve the backend/API based on agreed scope

Review the work, release payment, and leave feedback to Daniel.