Web3 Payment Integration Engineer

How many years of total experience do you have in backend development, and how many of those have been specifically dedicated to building and integrating Web3 solutions (particularly crypto payment gateways or smart contracts for stablecoins)? *

Please describe 1-2 of your most successful projects involving the integration of crypto payments into production. What architecture (custodial/non-custodial) and tech stack did you use, and what were the transaction volumes or average ticket sizes the system handled? *

In your practice, how do you handle edge cases for server-side payment processing (e.g., underpayments, overpayments, webhook failures, or stuck transactions on the network), and what methods do you use by default to secure endpoints against unauthorized access? *