You will get a clean backend API, integration, or automation system
Project details
I build clean, reliable backend systems, APIs, and integrations that handle real-world business logic.
Whether you need a new API, system integration, or help fixing an existing backend, I focus on creating structured, scalable solutions that are easy to maintain.
I’ve worked with API-driven systems involving authentication, data processing, and automation, and I prioritize performance, security, and clarity in every project.
Whether you need a new API, system integration, or help fixing an existing backend, I focus on creating structured, scalable solutions that are easy to maintain.
I’ve worked with API-driven systems involving authentication, data processing, and automation, and I prioritize performance, security, and clarity in every project.
Programming Languages
PHP, JavaScript, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$50
|
Standard
$100
|
Advanced
$200
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$20 - $40
Additional API Integration
(+ 1 Day)
+$40
Extra Feature / Custom Logic
(+ 2 Days)
+$50Frequently asked questions
About Lance Rhenier
Backend Systems Engineer | APIs & Integrations | .NET, Node, React
Cavite City, Philippines - 11:35 am local time
With 4+ years of experience, I’ve worked on full-stack and backend-heavy systems powering web, mobile, and IoT applications. My focus is on building clean, scalable architectures that are reliable in production and easy to maintain as your system grows.
Here’s what I can help you with:
Designing and developing RESTful APIs (.NET, Node.js, Laravel, Spring Boot)
Database design and optimization (MySQL, PostgreSQL, SQL Server)
Authentication systems (JWT, role-based access control)
Third-party integrations (payment gateways, external APIs)
Automation tools and backend workflows
Debugging, refactoring, and improving existing systems
I’ve built systems involving real-time IoT communication, automated payment processing, and AI-powered backend workflows. I’m comfortable handling full-cycle development — from planning and architecture to deployment and optimization.
I also work with frontend and mobile technologies (React, Flutter) when needed, ensuring smooth integration between backend systems and user-facing applications.
If you need a developer who can think through your system and build it the right way from the start, I’m ready to help.
Steps for completing your project
After purchasing the project, send requirements so Lance Rhenier can start the project.
Delivery time starts when Lance Rhenier receives requirements from you.
Lance Rhenier works on your project following the steps below.
Revisions may occur after the delivery date.
Review Requirements
I will review your project details, clarify requirements, and define the best approach for your backend or API solution.
Build & Integrate
I will develop the required backend logic, API, or integrations based on your needs using a clean and structured approach.