Sep 2024 – Present · 1 yr 6 mos · Bengaluru, Karnataka, India · On-site

• ● Working on Fintech products.
• ● Experienced in working agile methodology in both B2B and SaaS domains.
• ●Integrated secure ISO 8583-compliant transaction processing services across POS terminals and ATMs, enabling seamless real-time card transactions while ensuring compliance with PCI DSS standards for B2B banking clients.
• ●Contributed to the development and stabilization of a config-driven ETL platform built on Apache Spark, leveraging the Factory Design pattern, topological sorting for execution sequencing and optimizing Spark job performance to resolve resource starvation issues. Created reusable ETL configurations for reporting and analytics use cases, improving system reliability and reducing developer onboarding efforts for new reports by 80%.
• ●Engineered scalable & high-performance RESTful APIs for debit card product management, including features like account linking/delinking and dynamic creation of multipurpose debit card variants and sub-products, enhancing operational efficiency.
• ●Identified system gaps and proposed designs for an architecture adhering to SOLID principles, and RESTful APIs, enhancing scalability, flexibility, and maintainability across different services.
• ●Developed event-driven notification workflows leveraging Amazon SES to send automated success & failure alerts for critical operations including payment mode updates & report generation, facilitating granular analysis of execution logs and enhancing debugging.
• ●Ensured production stability by proactively monitoring system health, analyzing incident trends, and implementing fault-tolerant architectures while leading root cause analysis.
• ●Utilized various design patterns across resuable features such as Singleton, Strategy, Factory and Abstract Factory within Spring Boot services.
• ●Applied Test-Driven Development (TDD) with JUnit and Mockito, achieving more than 80% code coverage and maintaining high code quality standards through SonarQube.