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Hari User

@hariuser11

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I build scalable Java microservices, event-driven APIs, and cloud platforms for transportation and financial services.

United States

Message

At CSX Transportation, I lead the development of Java and Spring Boot microservices for train-planning and crew-balancing systems. I build Kafka-based event flows, REST APIs, Angular integrations, and AWS services including S3, DynamoDB, SNS, SQS, and CloudWatch.

Across Wavelabs, Unimoni Global Services, Mastercard, and American Express, I've delivered high-volume banking integrations, cloud modernization, CI/CD pipelines, monitoring, and secure transaction platforms. I also lead distributed teams in SAFe environments and use TDD, Jenkins, Bitbucket, and DevSecOps practices to support reliable releases.

Experience

Work history, roles, and key accomplishments

Current

Java Backend Lead Developer

Current

CSX Transportation

Jun 2023 - Present (3 years 3 months)

Lead the design and full-stack development of scalable microservices using Java 8+ and Spring Boot stack in Open Liberty. Implemented Kafka architecture for real-time message processing and managed CI/CD pipelines using Jenkins and Bitbucket.

Java Spring Boot Kafka Microservices Jenkins Bitbucket Angular REST APIs AWS DynamoDB S3 SNS Amazon SQS Cloudwatch Junit SAFe DevSecOps

Fullstack Engineer

Wavelabs Technologies

Sep 2020 - Jun 2023 (2 years 9 months)

Designed AWS cloud-based solutions utilizing EC2, S3 for report storage, and DynamoDB for data interaction. Developed full-stack features using Java, Spring Boot, and Kafka for high-traffic service platforms.

AWS EC2 S3 DynamoDB Java Spring Boot Kafka Jenkins Angular REST APIs Agile Scrum Veracode Sonar

Associate Manager

Unimoni Global Services

Jan 2019 - Sep 2020 (1 year 8 months)

Managed banking integration projects, facilitating secure transactions via SOAP and Spring Boot security. Oversaw work allocation and deliverables for the engineering team in a high-compliance banking environment.

SOAP Spring Boot Spring Data JPA Java EE Spring Security Banking Compliance Team Management

Senior Developer

Mastercard

Jul 2017 - Dec 2018 (1 year 5 months)

Worked with system design and development using Collections and multithreading for the action classes. Created workflows on Alteryx to pull data from various repositories.

Java Collections Multithreading Jira Jenkins Agile Scrum Test Driven Development Alteryx

Senior Programmer

American Express

Nov 2016 - Jul 2017 (8 months)

Produced RESTful webservices in Jersey Framework. Designed and developed Splunk dashboards for monitoring system performance, file transfers, and transaction logs.

RESTful Web Services Jersey Splunk Grails RFC Migration

Software Developer

OCR Services, Inc

Jan 2013 - Oct 2016 (3 years 9 months)

Developed in writing validations on client side with Validation Framework. Developed ant scripts and built applications using Apache ANT.

Java Servlet JSP SQL Pl SQL Oracle Apache Ant Validation Framework

IT-Consultant

Logica

May 2011 - Dec 2012 (1 year 7 months)

Implemented Core Java concepts to handle exceptions. Developed automated build scripts that check out code from CVS and build the application using Apache ANT.

Core Java Apache Ant CVS PCM Garbage Collection Unit Testing