Nishan

Software Engineer

X4digital Labs (Pvt) Ltd • Temps plein

Jan 2025 - Present • 1 yr 4 mos

Promoted from Associate Software Engineer. Architected and deployed production-grade web applications using Next.js 15 (App Router), React 19, and Node.js, serving enterprise clients including major hospitality organizations in the Middle East. Designed and implemented RESTful APIs and WebSocket (Socket.io) servers for real-time reservation updates, notifications, and live availability tracking. Managed and provisioned AWS infrastructure, including EC2 instances and RDS PostgreSQL database for both production and staging environments. Administered Ubuntu Linux servers with PM2 process management, configured SSL/HTTPS certificates, and maintained environment-based deployments across multiple client projects. Engineered database solutions using Prisma ORM with 185+ models across PostgreSQL, covering schema design, migrations, indexing strategies, and query optimization for high-volume datasets. Built a multi-tenant loyalty engine with points, tiers, a wallet system, referral programs, gift cards, and rule-based discount management for restaurant chains. Integrated multiple payment gateways (Adyen, Geidea, HyperPay) with full webhook processing pipelines, automated refund handling, and reconciliation workflows. Implemented Apple Wallet digital loyalty card generation (PKPass format) and Oracle Simphony POS integration for seamless in-restaurant loyalty redemption. Developed authentication systems using NextAuth v5 with RBAC, credential login, and OAuth; debugged and resolved critical production issues, including Prisma errors and security vulnerabilities. Built and maintained n8n automation workflows for API-driven integrations, scheduled monitoring, and inter-system data sync; delivered all projects with comprehensive client documentation.