دليل هندسي: Freelance Programmer: Southeast Asia Payments (PayNow, QRIS, DuitNow, Xendit). ألديان فازريهادي (Aldian Fazrihady) مبرمج مستقل أول ومهندس ذكاء اصطناعي (Python, Django, FastAPI, React, Next.js, TypeScript, Golang).

Capture high-converting real-time QR and bank transfer payments across Singapore (PayNow), Indonesia (QRIS/Virtual Accounts), and Malaysia (DuitNow/FPX) with senior freelance programmer Aldian Fazrihady.

def verify_xendit_callback_token(received_token: str, expected_secret: str) -> bool:
    import hmac
    return hmac.compare_digest(received_token or "", expected_secret)

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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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