Anjum Zaki

Solutions Architect

Techverx • Full-time

Nov 2021 - Feb 2026 • 4 yrs 3 mos

Fintech & Payment Systems Architect | Spring Boot Backend AMOS – Payment Processing System Architected and developed a complete Spring Boot backend for a blockchain-based cashback wallet platform serving thousands of users. Built RESTful APIs for payment processing, token transactions, and wallet management. Implemented JWT/OAuth2 via Spring Security, microservices architecture with Spring Cloud, and Redis caching for sub-second response times. Integrated blockchain for token settlement, multiple payment gateways for cashback distribution, and Spring Data JPA with PostgreSQL for transactional data. Deployed via Docker/CI-CD with GitHub Actions. PCI-compliant with structured logging, circuit breaker patterns, and high unit test coverage using JUnit/Mockito. Air Arabia – Flight Booking & Payment Platform Built payment processing system handling thousands of daily transactions with 150+ integrated payment gateways. Implemented PCI-compliant card tokenization, JWT authentication, and containerized auto-scaling services. Developed comprehensive REST APIs for booking flow and payment management. VoucherSkout – Digital Payment Marketplace Architected real-time voucher redemption payment processing. Integrated merchant APIs via REST and SOAP, implemented JWT-secured transaction workflows, and built real-time payment notification systems. CarbonEx – Cryptocurrency Exchange Platform Architected a fully functional crypto exchange with carbon credit tokenization on Ethereum. Built a sub-second order matching engine, multi-sig wallet management, and KYC/AML compliance workflows including identity verification, transaction screening, and SAR pipelines. Deployed microservices backend on Docker/Kubernetes with smart contract architecture for token issuance and settlement.