Global e-commerce and SaaS platforms expanding across North America, Europe, MENA, and Southeast Asia frequently search to hire a freelance multi-PSP payment orchestration (Stripe, Adyen, Braintree, Checkout.com, Xendit, Midtrans) programmer to boost authorization rates and support local payment methods. I am Aldian Fazrihady, a Senior Freelance FinTech & Full Stack Programmer.

Core Payment Gateway & Multi-PSP Routing Capabilities

  • Unified Payment Adapter Architecture: Abstracting Stripe, Adyen, Checkout.com, PayPal/Braintree, Xendit (QRIS, Virtual Accounts, OVO, Dana), and Midtrans behind a single clean interface in Go, Python, or TypeScript.
  • Smart Failover & Local Acquiring Routing: Automatically retrying soft-declined cards on a secondary processor and routing regional currencies (IDR, MYR, SGD, AED, SAR, EUR, GBP) to local acquirers to save 1.5–3% on cross-border FX fees.
  • PCI-DSS SAQ-A Tokenization & 3DS2 Authentication: Ensuring raw PAN card data never touches your servers.

Frequently Asked Questions

Can you integrate Southeast Asian (QRIS, FPX, PayNow) and MENA (Mada, Tabby, Tamara) local payment methods?

Yes. Supporting local real-time bank rails and wallets alongside credit cards routinely increases checkout conversion rates by 25–40% in APAC and MENA markets.

How do I hire you for payment gateway & FinTech engineering?

Hire me via Upwork.

About the Author — Hire Freelance Programmer Aldian Fazrihady

Aldian Fazrihady is a Top-Rated Senior Freelance Programmer, Freelance Full Stack Developer, and AI Application Engineer with 15+ years of production software engineering experience and Google Cloud Professional Cloud Architect & Data Engineer certifications. He specializes in building custom LLM & autonomous AI agents, RAG pipelines, Next.js/React PWAs, Python (Django/FastAPI), Go microservices, and serverless cloud infrastructure on Google Cloud Run and AWS.

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