01The problem
An e-wallet moves real money. Every transaction has to be recorded, traceable and reconcilable — and the API has to stay fast while it does that.
02Approach
I architected a secure transaction system with audit trails and reconciliation, and shipped versioned REST APIs in Node.js and Laravel for web and partner clients, backed by contract tests.
Critical endpoints got ~45% faster through Redis caching, N+1 query cleanup and indexed queries.
03Results
Thousands of payments a day processed with a full audit trail, while I led a team of 7+ engineers in Scrum across Zerocash, Rojetah, Dealmart and Trjim.
FAQ
What is Zerocash?
An e-wallet platform built at Technocloud; its transaction system processes thousands of daily payments with audit trails and reconciliation.
Do you build payment and wallet systems?
Yes — transaction systems, reconciliation, and integrations like Stripe, PayPal, Paymob and Paytabs.
Need something like this?
I'm Ahmed Mamdouh — 10+ years building systems like Zerocash. Scoped in one call.
