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Fintech Debit Card & Account Management
Fintech Infrastructure: Building Secure Debit Card & Banking Modules
Building a proprietary debit card infrastructure from the ground up requires more than just functional code—it demands uncompromising security and absolute data integrity. In this project, I designed and developed the high-security backend modules for a Fintech startup's core financial ecosystem.
📌 Project Focus & Responsibility
I was responsible for architecting the critical backend processes that handle the entire lifecycle of a user's financial journey. My focus was on creating a system that is not only fast and scalable but also resilient against fraudulent activities and technical failures.
Core Modules Developed:
- Account Management: Secure onboarding and account creation processes with rigorous verification workflows.
- Card Lifecycle Management: Backend logic for card issuance, digital/physical activation, status management (blocking/unblocking), and PIN operations.
- Transaction & Withdrawal Engines: High-precision logic for processing withdrawals and real-time transaction tracking, ensuring atomicity and consistency.
- Security Framework: Implementation of encryption standards and secure API protocols to protect sensitive financial data.
🛠 Technical Challenges & Solutions
Handling real-time financial data requires a "zero-error" mindset.
- Scalability: Designed the microservices (or modular monolith) architecture to handle high transaction volumes during peak times.
- Reliability`