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Solaipandian Vijayaram

@solaipandianvijayara

I build high-volume Java, Node.js, and React platforms for transaction-heavy enterprise workflows.

I've built and modernized high-volume platforms for DBS Bank, SGX Group, QAssure Technologies, and IBM across fintech, exchange, e-commerce, healthcare, and transaction-processing workflows.

At DBS Bank, I led distributed microservices processing roughly 100K–1M transactions daily, reduced API latency by 30%, and automated review workflows to cut manual work by 40%.

At SGX Group, I delivered Java/Spring Boot and Node.js services with Kafka-based processing for more than 500,000 daily workflow transactions. I also improved observability and reduced production incidents by 20%.

Across my work, I combine Java, Spring Boot, Node.js, React, Next.js, AWS, Docker, Kubernetes, secure APIs, and performance engineering to ship reliable enterprise software.

Experience

Work history, roles, and key accomplishments

Senior Fullstack Developer

DBS Bank

Sep 2021 - Jun 2026 (4 years 9 months)

Led architecture and operation of distributed backend microservices for market and analytics workflows processing up to 1M transactions daily. Optimized API performance, reducing latency by 30%, and automated review workflows cutting manual work by 40%.

Java Spring Boot NodeJS TypeScript React REST APIs Microservices Kafka Redis SQL Oracle NoSQL AWS Docker Kubernetes CI CD OAuth JWT Prometheus Grafana Junit Mockito Jest React Testing Library

Senior Full Stack Engineer

SGX Group

Jul 2019 - Aug 2021 (2 years 1 month)

Designed and owned Java/Spring Boot and Node.js microservices for supplier discovery and payment workflows. Built Kafka-based async processing supporting 500K daily transactions and reduced production incidents by 20% with observability.

Java Spring Boot NodeJS React TypeScript REST APIs Kafka Docker Kubernetes Terraform AWS Spring Security OAuth Prometheus Grafana Distributed Tracing

Senior FullStack Engineer

QAssure Technologies Pvt Ltd

Feb 2017 - Jun 2019 (2 years 4 months)

Delivered full-stack customer-facing and internal applications using Angular, React, Node.js, and Java. Improved responsiveness and expanded test coverage with Jest.

Angular React NodeJS Java TypeScript JavaScript REST APIs Jest State Management

Senior FullStack Engineer

IBM

Apr 2006 - Jan 2017 (10 years 9 months)

Engineered transaction-heavy enterprise applications using Java/J2EE, Node.js, and SQL/Oracle. Improved checkout API latency by 38% and healthcare scheduling response times by 40%.