You will get Crypto Payment Gateway — USDT/USDC on BSC or Solana
Project details
I build production-ready crypto payment gateways that handle real money on BSC and Solana — not demos, not templates.
What you get:
→ Unique deposit address per customer (BIP44 HD wallet derivation)
→ Real-time blockchain event indexer — detects USDT/USDC deposits automatically
→ Auto fund sweep to your treasury wallet
→ Merchant dashboard with API keys, webhook notifications, and withdrawal system
→ Smart contract (Solidity, CREATE2) for secure on-chain settlement
I've built and deployed this exact system twice — OneBilling (BSC) and SolPay (Solana). Both are live production systems handling real transactions.
You're not getting a junior developer learning on your project. You're getting someone who has already solved the hard problems: HD wallet derivation, blockchain indexer reliability, gas optimization, sweep worker failure handling, and merchant multi-tenancy.
Tech: Python, FastAPI, Node.js, Solidity, Web3.py, Solana Web3.js, PostgreSQL, Redis, Celery, Next.js.
Message me your requirements — I'll send you a technical architecture within 2 hours.
What you get:
→ Unique deposit address per customer (BIP44 HD wallet derivation)
→ Real-time blockchain event indexer — detects USDT/USDC deposits automatically
→ Auto fund sweep to your treasury wallet
→ Merchant dashboard with API keys, webhook notifications, and withdrawal system
→ Smart contract (Solidity, CREATE2) for secure on-chain settlement
I've built and deployed this exact system twice — OneBilling (BSC) and SolPay (Solana). Both are live production systems handling real transactions.
You're not getting a junior developer learning on your project. You're getting someone who has already solved the hard problems: HD wallet derivation, blockchain indexer reliability, gas optimization, sweep worker failure handling, and merchant multi-tenancy.
Tech: Python, FastAPI, Node.js, Solidity, Web3.py, Solana Web3.js, PostgreSQL, Redis, Celery, Next.js.
Message me your requirements — I'll send you a technical architecture within 2 hours.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$600
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 18 days |
Number of Revisions | 1 | 2 | 4 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$50Frequently asked questions
About MD Billal
MQL5 Expert Advisor & Prop Firm EA | Trade Copier EA | Backtesting EA
Dhaka, Bangladesh - 8:58 pm local time
Core Offerings:
- Crypto Payment Gateway: HD wallet derivation, auto-sweep, webhooks, merchant dashboards (BSC/Solana).
- Trading Automation: Sniper, arbitrage, MEV, and volume bots with real-time on-chain monitoring.
- MT5 Expert Advisor (EA): MQL5 development, trade execution, Telegram alerts, order monitoring.
- Strategy Backtesting: 10-20 years of historical data, full optimization report, any pair/timeframe.
- Smart Contracts: ERC-20/BEP-20 tokens, staking, vesting, and factory patterns.
- Web3 Integration: Telegram bots, DEX integration, and blockchain event indexers.
Recent Deployments:
- OneBilling: BSC payment gateway with Solidity (CREATE2) and Python FastAPI backend.
- SolPay: Solana multi-token gateway with commission engine and admin panel.
- Apipoint: High-volume SMS/OTP API serving 33 countries via Telegram.
- GMA Live: MT5 pattern detection engine (triangles, wedges, channels) with Oanda API bridge and real-time Telegram signals.
- Trading API: Full MT5 order execution REST API with live monitoring and trade statistics.
Tech Stack: Python, FastAPI, Node.js, MQL5, Solidity, Web3.py, Solana Web3.js, PostgreSQL, Redis, Next.js, TypeScript.
Message me with your requirements. I will provide a technical architecture and timeline immediately.
Steps for completing your project
After purchasing the project, send requirements so MD Billal can start the project.
Delivery time starts when MD Billal receives requirements from you.
MD Billal works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements & Architecture
Review your requirements, finalize blockchain choice, design system architecture, and share a technical plan for your approval.
Backend & Wallet System
Build the payment API, HD wallet derivation, deposit address generation, and database schema.