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Selected delivery examples

Software Engineering Case Studies

A closer look at the business problem, delivery approach and technology used in selected projects. Client names and outcome figures are shared only where approved.

Fintech & Banking InfrastructureClient: Magic Pay Solution

Engineering a High-Throughput B2B Payment Switch with Zero Balance Drift

50,000+
Daily Transactions Processed
<380ms
API Callback Latency
99.98%
System Availability

The Operational Challenge

A fast-scaling financial technology provider faced database locking issues and timeout bottlenecks during peak evening settlement runs on their legacy PHP core.

The Engineered Solution

Engineered an event-driven transaction switch in Node.js and Redis. Implemented pessimistic row-level database locking in PostgreSQL, multi-bank failover routing, and signed HMAC webhook notifications.

Tech Stack:Node.jsRedisPostgreSQLDockerHSM Encryption
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Retail & Digital CommerceClient: SureshMart

Real-Time Multi-Branch Inventory Sync & Instant Payment Checkout

0%
Inventory Synchronization Drift
+45%
Order Fulfilment Velocity
100%
Peak Sale Availability

The Operational Challenge

A rapidly growing supermarket and retail chain faced stock drift between physical counter POS terminals and their online storefront, causing order delays and checkout drops.

The Engineered Solution

Engineered an event-driven inventory synchronization engine with optimistic lock management, instant UPI deep-link checkout, and automated WhatsApp order notifications.

Tech Stack:Next.jsReactNode.jsPostgreSQLRazorpay
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Aadhaar Banking & Financial InclusionClient: LetsPay India

NPCI-Compliant AEPS Cash-Out & DMT Core for Underserved Retailers

5,000+
Retail Merchant Kiosks
99.7%
Instant Settlement Success
Real-Time
Settlement Reconciliation Time

The Operational Challenge

A merchant correspondent network required an institutional banking application connecting rural retail kiosks to national banking rails with biometric security.

The Engineered Solution

Developed a certified AEPS (Aadhaar Enabled Payment System), BBPS utility bill gateway, and domestic remittance engine with biometric hardware SDK bindings and automated ledger balancing.

Tech Stack:JavaAEPS CoreDMT SwitchBiometric SDKPostgreSQL
Read the full case study

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