Legacy Salesforce Migration to a High-Performance MERN Stack & Next.js Custom CRM for a Fintech RFID Payment Platform

The client was running Adopt Cashless, an emerging fintech RFID payment platform designed for unattended businesses and corporate commercial fleets, on top of a legacy Salesforce configuration. As transaction volume grew across more than 50 active field locations, the platform hit critical architectural bottlenecks.

The reliance on third-party cloud wrappers introduced massive data fragmentation and synchronization delays, dragging down front-end page response times and creating significant transaction friction for end-users trying to top up balances. Furthermore, out-of-the-box billing limits prevented the platform from natively issuing custom-branded, compliant tax invoices to enterprise fleet accounts in real time. Operational overhead was mounting, and the client required an enterprise-grade migration to secure total data ownership, improve system reliability, and eliminate expensive subscription licensing costs.

Our senior engineering team executed a complete ecosystem overhaul. Operating as a specialized [e wallet app development company](https://www.iskylar.com/industries/ewallet-app-development), we handled the technical migration from Salesforce to a high-velocity, modern stack built entirely on Next.js, TypeScript, and MongoDB...

• Database Re-Architecture: Deployed a secure hybrid database model—utilizing MongoDB for flexible card provisioning and multi-business linking records, paired with PostgreSQL to handle transactional audit trails with full ACID compliance.
• Custom CRM Solution: Built a centralized operator dashboard to replace Salesforce, empowering business owners to manage card fleets, track real-time usage analytics, and handle multi-user access permissions without external tools.
• Automated Billing & Invoicing Engine: Engineered a trigger-based billing workflow that instantly generates white-labeled, compliant tax invoices bearing the operator’s exact brand name upon successful balance recharges.
• Auto-Debited Top-Up Features: Implemented secure tokenization pipelines that allow customers to set up automated, balance-triggered recharges (e.g., adding $100 when credit drops below $25) to prevent mid-service operational stalls.