You will get Payment Gateway Integration (mobile money, bank, wallet)
Project details
I’ll help you integrate a secure Billing & Payments system that automates invoicing, enables real-time payments (bank, mobile money, wallets), and provides instant reconciliation. What sets this project apart is my proven expertise with Django, DRF, Celery, Go, PostgreSQL, Redis, and Kafka to deliver highly scalable, fault-tolerant payment systems. You’ll get more than just working APIs - you’ll get reliable financial workflows that save time, prevent errors, and give full visibility via receipts and dashboards.
Programming Languages
JavaScript, Python, GoCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$300
|
Standard
$600
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 15 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $150
Additional Revision
+$30
Design Customization
(+ 3 Days)
+$100Frequently asked questions
About James
Senior Backend Developer | Python (Django, FastAPI, Flask) | Go
Nairobi, Kenya - 6:39 pm local time
I build backend systems and APIs that are reliable, efficient, and designed to grow, utilizing Python (Django, Flask, FastAPI) and Go.
What I bring to the table:
1. Performance & scalability: I’ve improved backend services to handle larger loads smoothly. This includes decoupling monolithic applications into microservices, optimizing service performance, and ensuring the architecture can support rapid user growth without downtime.
2. Readable & maintainable code: I write modular, testable, and well-documented code, so anyone on your team can pick it up and extend it without confusion.
3. End-to-end delivery: I’ll handle DB design (SQL and NoSQL), API layers, integrations, and even frontend if needed (React / Next.js).
4. Deployment & ops-ready: I bring experience with Docker, AWS, CI/CD pipelines, and monitoring.
Why work with me?
I’m not a task doer, I’m a partner. I’ll ask the right questions, point out tradeoffs, and deliver code that supports your business goals.
Let’s talk
Message me and I’ll share a brief audit plan (free) of your system, so you see how I think before we even start.
Steps for completing your project
After purchasing the project, send requirements so James can start the project.
Delivery time starts when James receives requirements from you.
James works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & audit
- Review repo, payment docs, existing flows and sample bills. - Deliverable: short audit report with questions, risks, and a prioritized plan.
Design & API contract
- Define endpoints, webhook flow, idempotency and reconciliation rules. - Deliverable: design doc + sequence diagram of payment → reconciliation → receipt.