Abhay Khune

Domain: Payment Processing, Card Issuer Systems, ISO Messaging

• Worked on Multiple Card-Brands transaction processing logic in an issuer switch environment.
• Analyzed and implemented Different message flows for transaction life cycle.
• Enhanced internal simulation tools for Faster and Validated Message flows for different card networks.
• Debugged and resolved transaction issues by analyzing raw ISO messages and logs

Domain: Identity & Access Management (IAM), Passwordless Authentication

• Developed backend components for Linux Credential Provider using C/C++ and PAM modules
• Integrated a custom passwordless authentication mechanism for Linux systems
• Designed and implemented key caching logic for efficient API parsing and authentication
• Built and managed production-ready release builds; resolved real-time issues and configurations
• Developed secure Windows Credential Provider modules using smartcard-based authentication APIs
• Contributed to end-to-end authentication solutions across Linux and Windows platforms

Domain: Endpoint Security, Antivirus, Firewall, System Optimization

• Designed and developed multiple system-level security tools using C/C++ for Windows and Linux
• Created Windows Credential Provider supporting virtual smartcard-based login
• Developed a full-scale Scanner Engine for malware detection using pattern matching and low-level programming
• Engineered multithreaded scanning modules with process and thread synchronization
• Integrated MySQL database with scanning and firewall modules for real-time event logging and control
• Built a Web Firewall to monitor traffic, block packets, and configure proxy servers
• Created custom caching modules and indexed DBs to accelerate system-level operations
• Developed user-facing UI components using MFC, focusing on performance and usability
• Managed full development lifecycle from design to release across multiple product lines