Wasifa Khan

Enterprise Software Engineer specializing in Java, Spring Boot, enterprise integrations, and banking/fintech payment systems. Hands-on experience with RAAST, P2M payments, digital wallet and switch systems, IBM App Connect Enterprise (ACE/IIB), REST APIs, SQL, and financial transaction processing. Experienced in production troubleshooting, end-to-end change requests, database analysis, security remediation, and supporting enterprise applications in Agile environments.

Senior Officer, Enterprise Software Engineer - Bank Alfalah - Karachi, Pakistan

(2026-09)

• Develop and support RAAST (Instant Payment System) services, including P2M (Person-to-Merchant) payment flows, supporting reliable real-time payment processing.
• Develop and maintain enterprise integrations using IBM App Connect Enterprise (ACE/IIB), connecting banking and payment systems through message flows, APIs, and integration services.
• Analyze business requirements, implement application changes, and troubleshoot production issues across payment and integration services.
• Collaborate with internal teams and external stakeholders to investigate transaction issues, implement fixes, and support production deployments.
• Follow secure coding practices and banking compliance standards while delivering enhancements in an Agile environment.

Associate Software Engineer - Vaulsys - Karachi, Pakistan

(2025-06 - 2026-09)

• Resolved production transaction issues across NayaPay wallet and switch modules, including STAN/TXNRef mismatches, transaction routing failures, settlement discrepancies, GL reconciliation issues, and wallet balance inconsistencies.
• Analyzed application logs, transaction flows, and database records to perform root-cause analysis and resolve critical production incidents.
• Optimized SQL queries and developed stored procedures to improve database performance and resolve data inconsistencies across financial transactions.
• Investigated and resolved RAAST production issues, supporting reliable real-time payment processing and transaction flows.
• Managed Change Requests (CRs) end-to-end for Faysal Bank, including requirement analysis, Java/Spring Boot development, REST API enhancements, UI changes, bug fixes, testing support, and third-party financial system integrations.
• Developed and enhanced banking application features, APIs, and integrations while troubleshooting issues across backend services and enterprise financial systems.
• Remediated security vulnerabilities identified through VAPT assessments and upgraded vulnerable dependencies to support PCI-DSS compliance and secure application development.
• Deployed and supported enterprise applications on Linux servers, including TLS/SSL configuration, application troubleshooting, and security hardening.

Full Stack Developer Intern - SYNC Interns - Remote

(2023-07 - 2023-08)

• Developed responsive web applications using React.js, Node.js, Express.js, and MongoDB.
• Collaborated with an Agile development team using GitHub for version control and code collaboration.

Bachelor of Science - Software Engineering - Jinnah University For Women (2021-01 - 2025-01)