You will get Production-Ready Node.js API Development or Integration for Your Web App
Project details
You’ll get a fully functional Node.js API built to handle real use cases — secure, efficient, and ready for production. I’ve worked with early-stage startups and small teams to develop APIs that power dashboards, automate workflows, and integrate with third-party platforms like Stripe, Twilio, and custom CRMs.
The focus is on writing clear, maintainable code that fits your system and scales with your product. Whether it’s a single endpoint or a full backend, the API you get will be tested, documented, and ready to ship.
The focus is on writing clear, maintainable code that fits your system and scales with your product. Whether it’s a single endpoint or a full backend, the API you get will be tested, documented, and ready to ship.
Programming Languages
JavaScriptCoding Expertise
Security, DesignWhat's included
| Service Tiers |
Starter
$20
|
Standard
$100
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 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 - $200
Additional Revision
+$15
Unit Tests for API routes
(+ 2 Days)
+$75About Osas
Fintech Backend Engineer | FastAPI, Go, Payment APIs & Virtual Cards
Benin City, Nigeria - 8:50 am local time
Currently the sole backend engineer at a dual-currency (NGN/USD) fintech platform, where I own everything from architecture to production: FastAPI + MongoDB, Celery async jobs, HMAC-based auth, webhook integrations, and zero-downtime DigitalOcean deployments via GitHub Actions and Kamal.
Previously built a WhatsApp-integrated food ordering platform and high-availability financial services at a fintech/food-tech company, improving system response time by 40% through Redis caching and query optimization.
What I can build for you:
* Payment gateway integrations (Stripe, Flutterwave, Paystack, etc.)
* Virtual card systems with reconciliation and idempotency
* Secure REST APIs in FastAPI or Go (Gin/Fiber)
* Background job processing with Celery or Go workers
* CI/CD pipelines and DigitalOcean/Docker deployments
* Webhook systems with logging and failure recovery
I work best with startups and fintech companies that need reliable, security-conscious backend engineers, not just someone who can write code, but someone who understands what breaks in production.
Steps for completing your project
After purchasing the project, send requirements so Osas can start the project.
Delivery time starts when Osas receives requirements from you.
Osas works on your project following the steps below.
Revisions may occur after the delivery date.
Client get active feedback
You get active feedback and/or scheduled meetings to know about development progress