Case Studies

Payment Gateway Integration

Payment Gateway Integrations and Reconciliation

Designed and developed Payment Gateway plugins for integrations with PayPal, Payflow (ACH), Payout Express Checkout, Paypal IPN, Paysafe, Worldpay, Stripe, EP2 (Australia),, Bank of America Payment Gateway, Paytrace, Braintree, Postfinance and more. Desgined and implemented Payment Reconciliation system for Bank of America payments.

Data Migration

Data Migrations for Billing Systems in Telecom Domain

Hard core experience with data migration projects. Seamless migration of millions customer records, invoices, payments, assets and orders. Services for reconciliation and verification of migrated data. Cutover planning and iterative data migrations on production environment.

Performance Improvement

Performance Improvements of Cloud based Batch Processes using Spring Batch

Maintain & support a billing engine for client’s cloud platform. Parallel processing introduced for batch process that generated invoices through multi-threaded parallel processing strategy. Invoice generation process times brought down by over 100%. This helped speed up client’s operations and accounts functions.

PCI Compliance

Payment Gateway Implementation for Cloud Service for PCI Compliance

Designed and developed Stripe integration with client’s billing system using Java based integration. Data migration of all customers to Stripe from existing gateway that was non-PCI compliant implementation. Implemented automatic update of the credit card info on the billing application using Stripe. Helped client become PCI compliant with this project.

Production Support

Production Support of Billing Systems

Supporting more than a dozen clients to resolve technical and billing issues in production systems. A dedicated team of engineers to support operations and smooth functioning of businesses heavily relying on their billing systems. Level 1 to Level 4 support with standard SLAs.


Implemented a Call Charging Module for a MVNO (Mobile Virtual Network Operator)

Implemented Mediation Call Charging Module for a MVNO. Systems Integration with in-house software system to feed data into the billing system. Expanded client’s business faster by deploying newer installations. Able to handle multiple underlying Mobile Network Operators (MNOs). Incorporate complex rate cards for calls, sms and data.

Call Center

Implementation of Billing System for a Call Center with multi brand outlets

Implemented client’s billing system for a Call Center within 6 months. Data Migration, new feature design and development, Usage Tracking & Invoice Presentation. Involved with long term support and stabilisation of the billing platform and it’s integrations.

BillingHub is now EarnBill, from the same team.