Arvind

NatWest

• Architected and deployed end-to-end microservices using Spring Boot, MongoDB, and AWS, significantly improving system modularity and horizontal scalability.
• Integrated Apache Kafka to facilitate real-time event-driven notifications and audit logging for sensitive trade surveillance data.
• Engineered secure stateless architectures by implementing JWT-based authentication and Spring Security, ensuring strict compliance with financial data protection standards.
• Optimized service-layer logic and reduced redundant database calls, resulting in faster REST API response times.

Viator – Travel & Marketplace

• Owned end-to-end system design (HLD/LLD) for scalable microservices, defining service boundaries, database partitioning, and failure recovery strategies to support high-throughput transactions.
• Reduced system downtime by 25% by implementing proactive monitoring and observability dashboards using Grafana, Prometheus, and the ELK Stack.
• Optimized PostgreSQL performance through advanced query tuning and schema indexing, leading to a measurable increase in application responsiveness.
• Streamlined inter-service communication by integrating Feign Clients and Kafka, enhancing API reliability and reducing boilerplate code.
• Orchestrated containerized deployments using Docker and AWS, ensuring environment parity across Dev, QA, and Production.
• Managed sensitive credentials and secrets through AWS Vault, strengthening security posture.
• Achieved a 99% delivery rate for critical communications by architecting a reliable email delivery system via Postmark

• Maintained and enhanced mission-critical banking microservices using Spring Boot, achieving 99.9% system availability and resolving high-priority production tickets within strict SLAs.
• Integrated Spring Security and OAuth2 protocols into existing microservices to mitigate security risks and ensure compliance with banking industry standards.
• Led cross-functional teams to develop innovative digital solutions for clients.
• Collaborated with stakeholders to gather requirements and define project scope.
• Analyzed client data to drive strategic recommendations and improve user experience.

• Spearheaded the integration of Aadhaar biometrics and HSM services for a high-scale Indian Government project, enabling secure identity verification for millions of end-users with a 99.9% transaction success rate.
• Architected and managed high-availability web services using SOAP and REST, facilitating seamless data exchange for multiple third-party vendor integrations.
• Optimized session management and application performance through implementation of Redis as a distributed caching layer, supporting scalable application usage.
• Conducted performance testing and bottleneck analysis using IBM RPT, validating system stability during peak load conditions.
• Developed and customized desktop GUIs for interfacing with Aadhaar fingerprint scanners and electronic signature pads, enhancing hardware-to-software synchronization reliability.