Hitesh Kumar
Senior Backend Engineer | Payment Systems Specialist
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Quick backend tip:
If your payment webhook can fire twice, your code must handle it twice.
Store the event ID, check it before processing, and return 200 fast. That one habit prevents most duplicate-charge and double-credit bugs.
I build payment systems like this for a living...
Quick backend tip:
If your payment webhook can fire twice, your code must handle it twice.
Store the event ID, check it before processing, and return 200 fast. That one habit prevents most duplicate-charge and double-credit bugs.
I build payment systems like this for a living...
Backend work I'm taking on this week 👇
→ Laravel / Django APIs for web + Flutter apps
→ Payment gateway integration (Stripe, Razorpay, Novatti, Token Payments, Trust Payments)
→ Webhook handling that doesn't break under load
→ Slow MySQL / PostgreSQL queries, fixed
8+ years...
Just shipped GlowSync 🚀 — a salon & business management app
I built solo, backend to launch. Django REST API + Flutter app, live on Play Store now. Handles bookings, staff schedules, and subscriptions for salon owners who are tired of managing everything on WhatsApp and paper....
Hello everyone, I have recently build a flutter app, which handle the battery alarm and notify while charging and discharing, also while it's low on battery.
