Baby Mattaparthi

Payments Processing Integration Projects: Worked on integrating and enhancing payment processing capabilities within the Payments Hub platform, supporting real-time and scheduled money movement across domestic, cross-border, and card-based networks.

• Cross-Border Payments: Integrated with the Convera network to enable currency exchange, payment initiation, and status tracking for international transfers.
• Domestic Payments: Built APIs for real-time credit transfers through FedNow and Fedwire, including handling of returns, refunds, and investigation flows.
• Card Payments: Processed Visa transactions by handling VisaNet Settlement Service (VSS) and Single Message System (SMS) reports for fee settlement and reconciliation.
• Ensured data compliance and message integrity using ISO 20022 and internal validation frameworks.
• Enabled real-time processing by integrating with external banking systems and orchestrating workflows across internal services.
• Helped ensure reliable, secure, and scalable movement of funds across various payment channels.

Bank Rail Service – Core Banking Integration Microservice. The Bank Rail Service is used by Payment Hub Core to provide a unified interface for communication with different core banking systems, enabling debit and credit transactions on customer accounts across various banks.

Key Contributions:

• Worked on enhancing integrations with core banking systems, like FISIBS and SymExchange.
• Integrated bank APIs using REST and SOAP protocols to support secure transactions.
• Focused on improving transaction flow and ensuring reliable communication between the Payment Hub and bank cores.

Technologies: Java, Spring Boot, REST, SOAP, Kafka, and Redis.

Event Notifier Microservice (ENMS) – Real-Time Notification System

• Worked on a service that sends notifications (Webhooks, Email, SMS) when Payments Hub events happen.
• Helped format Email and SMS messages using templates based on event data.
• Integrated with another service (NMS) to manage and send these notifications.
• Improved APIs used to manage templates, footers, and subscriber settings.
• Helped set up Kafka to receive real-time events from the Payments Hub.

Flexy Batch Platform (FBP) – Batch Orchestration Framework

• Designed and developed a centralized batch orchestration platform used by multiple applications to execute scheduled and on-demand batch jobs (e.g., settlements, reconciliation, reports).
• Built REST APIs to support CRUD operations for event configurations and alias management.
• Developed both backend and UI components to manage batch jobs through a user-friendly interface.
• Implemented Docker-based job execution with AWS ECS and ECR for isolated, scalable performance.
• Enabled event monitoring and diagnostics using Kibana logs and Event Summary APIs.
• Ensured language-agnostic, application-independent job execution with customizable CPU and memory usage.

• Learned Spring Boot, Angular, and database technologies to develop complete full-stack applications.
• Developed Splitwise, a full-stack web application for managing and splitting shared expenses among users.
• Built backend APIs using Spring Boot, created dynamic front-end interfaces with Angular, and integrated database systems for data management.
• Implemented key features, including group creation, expense tracking, balance calculation, and bill settlement.
• Focused on secure authentication, data validations, and delivering a user-friendly UI.