Rohit Wadhwa

Rohit Wadhwa is an enterprise technology leader with 15+ years of experience architecting and delivering mission-critical platforms across retail infrastructure, financial services, and healthcare systems. His career sits at the intersection of distributed systems engineering, cloud-native modernization, and intelligent automation—work that directly influences national-scale operational reliability, financial decisioning throughput, and customer-facing experience integrity. Across Walmart Technologies, Fannie Mae (via Hexaware), CVS Healthcare (via MedHOK), and Citi/OneMain (via TCS), Wadhwa has consistently delivered large, compliance-sensitive systems where performance, availability, and auditability are non-negotiable.

Wadhwa’s technical foundation spans system design, full-stack engineering (Java/J2EE and React Native), microservices architecture, and cloud infrastructure engineering across AWS and Azure ecosystems. Since September 2021, he has served as a Senior Software Engineer at Walmart Global Tech, building NextGen Omni Channel Point of Sale (POS) applications across Walmart U.S., international stores, and Sam’s Club. As a leader for the Checkout Mobile platform, his work supports store-scale execution across approximately 5,000 locations. He has also driven platform engineering modernization—migrating data infrastructure from Azure SQL to Azure Cosmos DB and leading migration to Walmart’s cloud-native Kubernetes platform—delivering a reliability posture targeting 99.99% availability in systems that sit in the critical path of retail operations.

Prior to Walmart, Wadhwa worked at Hexaware Technologies (2017–2021) as a Senior Java Developer supporting Fannie Mae modernization efforts. His work contributed to the evolution of Desktop Underwriter—an underwriting platform used across the U.S. mortgage ecosystem—by modernizing legacy services with AWS, microservices, and Spring-based architecture. He also contributed to collateral and vendor data retrieval systems that enabled faster digital validation and integration with fintech partners, supporting an industry shift from paper-heavy workflows toward near-instant validation patterns. His engineering emphasis included reliability and continuity measures such as blue/green deployment and circuit-breaker patterns, along with standardized OAuth2 security, logging, and performance testing practices for enterprise-scale consistency.

In healthcare, Wadhwa served as Senior Java Developer at MedHOK (2016–2017), building Spring/Hibernate-based enterprise applications supporting CVS healthcare programs and care management solutions for health plans. His work included database performance optimization that improved application responsiveness—an important contribution in domains where latency can directly affect operational workflows and regulated data processing. Alongside delivery, he contributed to team capability-building through mentoring junior engineers in Java and web services.

Wadhwa’s early foundation was built at Tata Consultancy Services (2010–2016), supporting CitiFinancial/OneMain loan lifecycle systems—platforms where real-time credit decisions and fraud controls directly shape consumer access to credit. He held responsibilities spanning configuration analysis and incident response leadership and built multi-tier caching architectures and bureau-integration orchestration (including Equifax connectivity). These systems reduced underwriting turnaround from multi-day processes to near-real-time decisioning, improving customer experience and operational throughput while strengthening compliance controls in a national lending context.

Across roles, Wadhwa has combined engineering depth with measurable innovation. At Walmart, he designed a stateful business process orchestration framework using Camunda that materially reduced infrastructure costs. He also co-designed “Checkout Doctor,” an AI/ML-driven incident triage system using BigQuery and machine learning to automate production troubleshooting and reduce mean time to recovery—introducing intelligent operations into retail platform reliability. In user experience, he implemented WCAG-compliant accessibility features including haptics, screen readers, and multilingual support (English, French, Spanish), reinforcing that inclusive design is an engineering discipline, not an afterthought.

Wadhwa’s work has been recognized through internal awards at Walmart and high-trust involvement in strategic technical initiatives at Fannie Mae. He has also maintained a consistent focus on operability and quality engineering, implementing observability standards using Splunk, Prometheus, and Grafana, and driving test automation practices that compress delivery cycles. His professional identity includes mentorship and knowledge stewardship: creating runbooks and support architectures used as primary incident knowledge bases, mentoring junior engineers, and advocating for coding standards that scale across distributed teams.