Senior Full Stack Software Engineer Golden SB Tech Group
Designed and delivered a multi-channel payment gateway supporting account-to-account, card-to-card, cryptocurrency, bank gateway, merchant withdrawal, and peer-to-peer payment flows. Architected transaction-processing workflows and database schemas for card, bank, crypto, Stripe, Idram, and merchant withdrawal rails.
Implemented concurrency-safe transaction matching through transactional processing, row-level locking, and conditional updates to prevent race conditions. Built merchant APIs, reconciliation and reporting tools, administration dashboards, real-time payment notifications, merchant synchronization infrastructure, and centralized monitoring for payment, banking, and cryptocurrency operations.
Processed and monitored thousands of daily transactions across multiple channels. Mentored junior and mid-level developers, conducted code reviews, participated in technical interviews, and contributed to architecture, planning, and estimation.