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Niraj Das

@nirajdas

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Senior backend engineer building scalable, event-driven microservices for fintech and cloud platforms.

India

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What I'm looking for

I’m looking for a backend role building cloud-native, event-driven systems at scale, where reliability, fault tolerance, and performance optimization matter. I want to own distributed architecture, observability, and continuous improvement that reduces latency and cost.

I’m a Senior Backend Engineer with 9+ years of experience designing and scaling distributed, event-driven microservices across Fintech, Cloud, and Enterprise platforms. My work centers on high availability, fault tolerance, and performance optimization—especially multi-region systems that improve throughput and reduce latency.

I’ve led backend initiatives end-to-end: at Oracle, I designed the Next Batch Marker framework (reducing redundant database lookups by 20%), and improved service availability and cloud infrastructure costs by 18% through Kubernetes HPA. At Visa, I led the Digital Authentication Framework (reducing fraud incidents by 20%) and automated multi-region deployments across 45+ markets (cutting release cycle time by 40%). I bring a practical engineering ethos—shipping reliable systems using Java/Spring Boot, Kafka/RabbitMQ, and Kubernetes with strong observability via Prometheus and Grafana.

Experience

Work history, roles, and key accomplishments

Current

SDE III - Senior Member

Current

Oracle

Apr 2025 - Present (1 year)

Designed and implemented a Next Batch Marker framework that reduced redundant database lookups by 20%, improving service throughput and lowering system latency. Implemented Kubernetes HPA to improve availability and reduce cloud infrastructure costs by 18%.

Java Spring Boot Kubernetes Performance Optimization Throughput

Senior Software Engineer

Visa

Jan 2023 - Apr 2025 (2 years 3 months)

Led development of a Digital Authentication Framework, reducing fraud incidents by 20% across global payment infrastructure. Designed multi-region deployment automation across 45+ markets, cutting release cycle time by 40%.

Java Spring Boot Microservices Architecture Multi Region CI CD Security Architecture Fraud Prevention

Backend Engineer

Raena Beauty

Sep 2021 - Jan 2023 (1 year 4 months)

Designed an event-driven notification service using RabbitMQ to enable asynchronous processing and improve system reliability. Built NetSuite integration APIs with real-time synchronization, improving reporting accuracy by 25%, and added retry mechanisms to strengthen resilience.

RabbitMQ Event Driven Architecture Asynchronous API Integration NetSuite Integration Messaging Systems

Senior Software Design Engineer

Newgen Software

Nov 2018 - Sep 2021 (2 years 10 months)

Optimized BAM reporting queries to improve performance by 40%. Supported high-availability enterprise platforms with 24x7 production reliability and improved system stability through backend service optimization.

Java Spring Boot SQL Query Optimization Performance Tuning High Availability Backend Services Reliability System Stability

Product Engineer

Intellect Design Arena

Jul 2016 - Nov 2018 (2 years 4 months)

Built a Digital Onboarding Portal, reducing onboarding time by 60%, and designed backend APIs for enterprise banking workflows. Improved backend scalability and modular architecture to support growing system demand.

Java Spring Boot Modular Architectures Scalability Performance Optimization