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Nishant kumar

@nishantkumar20

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I build scalable Java, cloud-native, and AI-powered enterprise applications across financial and logistics platforms.

India

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At Kumaran Systems for CIBC's eWealth platform, I re-engineered transaction comparison to process 1,000+ accounts in parallel and reduced Compare API latency by approximately 30%. I also designed an AI-powered transaction analysis engine and conversational assistant using Java 21, Spring AI, LLMs, Prompt Engineering, and RAG.

Previously, I helped Maersk's Rateflow Ocean Platform scale from about 1,000 to 100,000+ invoices with Kafka and event-driven microservices. Across Société Générale, IBM, and TCS, I've delivered Java, Spring Boot, React, and cloud-native solutions for payments, pricing, reconciliation, and banking workflows while leading delivery and mentoring developers.

Experience

Work history, roles, and key accomplishments

Current

Team Lead

Current

Kumaran Systems

Jan 2026 - Present (9 months)

Leading development of an AI-powered transaction analysis engine and a React-based dashboard for a digital wealth management platform. Re-engineered batch processing to improve scalability and reduced API latency by approximately 30%.

Java 21+Spring Boot Spring AI LLM Prompt Engineering RAG React Microservices Kafka Azure Kubernetes

Senior Software Engineer

Maersk

Jun 2023 - Dec 2025 (2 years 6 months)

Enhanced the Rateflow Ocean Platform to handle traffic spikes by introducing Apache Kafka as a buffering layer and designing an event-driven architecture. Owned pricing-service delivery using Domain-Driven Design and implemented Temporal workflows.

Java Spring Boot Kafka gRPC DDD Temporal Docker Helm Azure DevOps GitHub Actions AKS

Senior Software Engineer

Société Générale

Dec 2021 - May 2023 (1 year 5 months)

Developed backend modules for auditing, reconciliation, break management, and payment processing. Built Spring Boot microservices integrated with React applications and improved CI/CD reliability using Jenkins and AKS.

Spring Boot Microservices React Jenkins AKS CI CD

Full Stack Developer

IBM

Jan 2021 - Dec 2021 (11 months)

Developed Spring Boot microservices and REST APIs for pricing and opportunity lifecycle management. Built responsive UI components and backend integrations, contributing to performance improvements and production support.

Spring Boot REST APIs React Java

Java / Full Stack Developer

TCS

Jan 2017 - Jan 2021 (4 years)

Developed enterprise banking applications supporting cheque processing and payment workflows. Built backend services and frontend components using Java and Spring technologies, contributing to modernization initiatives focused on performance and scalability.

Java Spring Framework React Banking Payment Workflows