SaaSFinTech / Payments4 Weeks Build
PaySphere — Global Multi-Currency Marketplace Payout Engine
Processed $2.4M in cross-border marketplace payouts with zero failed transactions and 99.98% webhook reliability.
Client & MarketPaySphere Technologies
My RoleLead Backend & Architecture Engineer
Timeline4 Weeks Build
Backing SupportSoftvence Agency
https://app.paysphere-gateway.io
PaySphere
Production Architecture • Next.js & PostgreSQL
Status: Active System
Payout Volume Processed
$2.4M+
Webhook Delivery Rate
99.98%
Countries Supported
22 Countries
Checkout Latency
< 450ms
Core Modules Implemented
Stripe Custom Connect Express Onboarding Flow
Multi-Currency Split Payouts with Currency Conversion
Idempotent Webhook Processing Engine with Automated Retries
Automatic Tax Invoicing with Downloadable PDFs
01. The Challenge
The Problem & Bottlenecks
“A creator marketplace needed compliant, split-fee payouts across 22 countries with tax reporting, automated fraud flagging, and automated invoicing.”
02. Engineering Solution
How We Designed & Built It
Architected a custom Stripe Connect workflow with automated KYC verification, escrow holding, and automated PDF invoice generation with idempotency keys.
System Architecture & Key Technical Decisions
Employed BullMQ on Redis for resilient background job queues. Every financial mutation is wrapped in a strict database transaction with ledger auditing.
03. Delivered Capabilities
Key Features in Production
Stripe Custom Connect Express Onboarding Flow
Multi-Currency Split Payouts with Currency Conversion
Idempotent Webhook Processing Engine with Automated Retries
Automatic Tax Invoicing with Downloadable PDFs
04. Client Endorsement
Verified Upwork Project
“Financial integrations require perfection. Monir brought immense discipline, testing every edge case and handling webhooks flawlessly. Highly recommended.”
👤
Sarah Jenkins
Technology Stack
Next.jsNode.jsStripe ConnectPostgreSQLBullMQRedisResend
Quantifiable Results
Payout Volume Processed$2.4M+
Webhook Delivery Rate99.98%
Countries Supported22 Countries
Checkout Latency< 450ms
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