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Vishu Nayak

@ananynayak

Message

I build event-driven payment and data platforms that process millions of transactions reliably at scale.

India

Message

At Sony PlayStation, I lead the design and delivery of a next-generation payments ecosystem, including a double-entry ledger processing 28M+ transactions daily and automated reconciliation that cut investigation time by 68%.

Previously, I modernized Kroger data platforms by migrating 30B+ transaction records at 99.97% accuracy, reducing audit-event processing latency by 94%, and building reliable event-driven services with Java, Spring Boot, Kafka, and AWS.

Experience

Work history, roles, and key accomplishments

Current

Consultant, Software Development Engineer

Current

Sony

Feb 2026 - Present (8 months)

Led a 4-member engineering team in designing and delivering Sony's core payments overhaul, integrating Stripe as the payment gateway and building an internal double-entry ledger system processing 28M+ transactions per day. Built an automated matching engine that cut reconciliation time by 68% and engineered next-gen console catalog services on Elasticsearch and Cassandra.

Software Development Engineer

Kroger

Aug 2023 - Dec 2025 (2 years 4 months)

Cut processing latency by 94% for 21M audit events through multithreaded consumption and processing. Developed event-driven sync applications for data migration, resolved event-order mismatches, and migrated 30B+ customer transaction records with 99.97% data accuracy.

Java Spring Boot Multithreading Kafka IBM MQ Domain Driven Design AWS Docker Kubernetes Git Jenkins Harness Rancher PostgreSQL Redis Cassandra MongoDB Elasticsearch Grafana Datadog Splunk New Relic

Software Development Engineer Intern

ZopSmart

Feb 2023 - Aug 2023 (6 months)

Contributed to RCA, bug fixes, and test case development, raising test coverage to 95%. Integrated Redis caching for microservices, improving response times by 30%, and developed a role-based authentication system using Spring Security.