Fintech App for Global Currency Exchange

Challenges Business Was Facing

The previous system hindered scalability, compliance, and user experience. We identified the critical challenges that prevented seamless operations and built a modern fintech platform designed for today’s global currency needs.

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  Encryption Upgrade Without Downtime

  Sensitive encrypted values had to move to a new algorithm, but taking the system offline or running a massive bulk migration would have disrupted live forex operations.

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  Scaling a Growing Marketplace

  Expanding operations demanded a scalable, containerized platform that could handle complex financial transactions, document verification, and real-time field logistics without slowing down as volume grew.

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  Orders Missing from the Delivery App

  Critical orders were failing to appear in the delivery app, so field teams could miss deliveries and customers waited longer for currency they had ordered.

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  Unreliable Push Notifications

  Unreliable push notifications left delivery teams disconnected from order updates, disrupting door-to-door fulfillment and making real-time coordination between the operations team and field staff difficult.

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  Broken External Synchronization

  Webhook scheduling issues and missing card and bank data created friction in external synchronizations, threatening the reliability of partner integrations and the marketplace as a whole.

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  Manual Operational Upkeep

  Receipts, document handling, lead reconciliation, and delivery reporting needed constant attention, and without automation these routine tasks would drain operations teams as order volume increased.

• Hidden Charges

  Non-transparent pricing structures created confusion and mistrust, as users were often surprised by additional charges after initiating transactions, damaging long-term platform credibility.

• No 24/7 Service Support

  Limited customer service hours meant users couldn’t get assistance during off-hours or international time zones, which reduced platform reliability and user confidence during emergencies.

Features Driving Currency Exchange Efficiency

The platform covers the full forex order lifecycle, from ordering and document upload to delivery tracking, notifications, reporting, and background workflow automation, across the web portal, dashboard, and mobile app.

Lazy Encryption Migration Engine

A Generic Executor checks the new column first and re-encrypts legacy values asynchronously on read, while all new inserts and updates use the new algorithm directly.

Order Management Service

Manages the full lifecycle of forex transactions, processing Buy Orders, Sell Orders, Reload Orders for forex card top-ups, and Unload Orders for forex card withdrawals.

Delivery Management & Delivery App

A dedicated delivery mobile app supports door-to-door currency delivery with real-time order tracking and status monitoring, keeping field teams and operations aligned on every order.

Role-Based Dashboard & Click-to-Call

Agents access customer details, orders, and document uploads, admins oversee all orders, agents, and document verification, and support staff call customers directly through Click-to-Call telephony.

Customer Portal & Travel Partner Exchange

Customers place currency orders, reload forex cards, and upload travel documents online, while travelers booking flights and hotels through the partner platform can exchange currency in the same flow.

Targeted Push Notifications

Firebase Cloud Messaging sends broadcast and user-targeted alerts in optimized multicast batches for delivery updates, card loading and unloading, and wallet-to-wallet transfers, covering both success and failure states.

Email Threading & Scheduled Reports

Order status emails thread automatically with internal teams copied, SendGrid handles transactional messages, and an hourly CSV report of delivery progress reaches the operations team.

Automated Maintenance & Card Sync Jobs

Scheduled jobs generate payment receipts every minute, compress uploaded documents every 5 minutes, reconcile leads, and retry card syncs with missing identifiers, reporting any failures.

Shared Services & API Documentation

Ditstek's API development services delivered a shared DTO library and Wrapper Service that prevent duplicate code, plus Swagger documentation for the User, Payment, Card Transaction, and Dashboard APIs.

Proven Impact: Legacy Bottlenecks to Scalable Fintech

Our custom-built currency exchange platform delivered measurable improvements across productivity, compliance, scalability, and customer experience—showcasing the transformative value of a fintech app development company’s deep domain expertise.

Zero-Downtime Encryption Upgrade

The lazy, on-access migration moved actively used financial data to the new encryption algorithm without any downtime or loss of marketplace performance for customers, agents, or field teams.

Reliable Door-to-Door Deliveries

Firebase push notifications and automated jobs closed the communication gaps that disrupted field logistics, so currency deliveries are now tracked and completed reliably from order to doorstep.

Currency Exchange Inside Travel Booking

The travel partner integration embeds currency exchange directly into the booking workflow, reaching travelers at the moment they need forex and supporting higher transaction volumes.

Stronger Data Integrity

Automated card synchronization, lead reconciliation, and webhook scheduling catch missing identifiers and sync failures early, keeping partner data and marketplace records accurate and consistent across services.

Hourly Operational Visibility

Hourly delivery reports, threaded order emails, and automatic receipts give operations teams a clear, current view of every order without compiling updates or chasing field staff manually.

Independent Scaling for Growth

The microservices architecture lets each service scale and deploy on its own, so the marketplace can grow order, delivery, and partner volumes without platform-wide changes.

Monthly Transactions Increased by 120% YoY

Improved platform stability, faster load times, and intuitive UX across devices contributed to a dramatic surge in transaction volume, positioning the product as a benchmark in forex trading software development.