Java Full Stack Developer

Arun Kumar M

+1-940-***-**** # **************@*****.*** ï linkedin.com/in/arun-m-20b3663a3

Summary

Backend Software Engineer with 4+ years of experience building and scaling financial and e-commerce platforms using Java, Spring Boot, microservices, REST APIs, Kafka, and SQL, with hands-on experience in frontend frameworks ReactJS and Angular. Skilled in designing high-performance, secure, and reliable full-stack systems supporting millions of transactions and high-traffic operations. Experienced in security best practices, JWT, RBAC, OAuth2, containerized deployments, Kubernetes, OpenShift

(OCP), Docker, and CI/CD pipelines, with strong expertise in object-oriented design, algorithms, data structures, and system scalability. Adept at collaborating with cross-functional teams and delivering high-quality software in Agile environments. Experience

JPMorgan Chase — Software Engineer Jan 2024 – Present Texas, USA

• Designed and implemented high-volume financial backend services supporting account management, authentication, transaction processing, and real-time reporting for 2M+ users.

• Developed RESTful APIs and service contracts for frontend applications (ReactJS) and external integrations, ensuring secure and consistent data flow.

• Built Spring Boot microservices with asynchronous messaging using Kafka, improving fault tolerance and horizontal scalability by 35%.

• Implemented security features including JWT-based authentication, RBAC, and OAuth2, ensuring secure access control for sensitive financial operations.

• Optimized relational database schemas and executed complex SQL queries on PostgreSQL to reduce processing time for large transactional datasets by 20%.

• Engineered data aggregation pipelines to consolidate financial data from multiple internal systems for analytics and reporting, reducing data latency by 25%.

• Implemented monitoring, logging, and alerting using Prometheus, Grafana, and ELK Stack to proactively detect anomalies and prevent downtime.

• Automated CI/CD pipelines using Jenkins, Docker, and Kubernetes to accelerate deployment cycles by 30% and improve release reliability.

• Worked closely with frontend, QA, and product teams to deliver end-to-end financial features, ensuring compliance with security and performance standards.

• Participated in Agile ceremonies, sprint planning, and technical design discussions, contributing to scalable architecture and system optimization.

Infosys — Software Engineer Oct 2020 – Dec 2022

India

• Developed and maintained Java Spring Boot microservices for a large-scale e-commerce platform, handling 10K+ daily transactions across product catalog, cart, orders, and payments.

• Designed and implemented RESTful APIs and JPA/Hibernate database operations (MySQL/Oracle) to optimize query performance and reduce API response times by 25%.

• Integrated backend services with payment gateways, inventory, shipping, notification, and provisioning systems to enable seamless end-to-end workflows.

• Built frontend features using Angular to support dynamic product pages, order management interfaces, and dashboards.

• Implemented security features including JWT, OAuth2, and role-based access control (RBAC) to protect sensitive user data and transactions.

• Implemented asynchronous messaging with Kafka to decouple services and improve throughput and fault tolerance during peak sales events.

• Built and deployed containerized applications using Docker and Kubernetes across multiple cloud environments, improving deployment efficiency by 30%.

• Enhanced CI/CD pipelines and collaborated with DevOps to reduce post-release defects by 20% and accelerate release cycles.

• Implemented structured logging, exception handling, and performance tuning to ensure high system stability during traffic spikes.

• Worked closely with frontend and QA teams to deliver end-to-end features while maintaining secure API contracts and data consistency.

Technical Skills

Languages: Java, TypeScript, JavaScript, SQL, Python Backend: Spring Boot, REST APIs, Hibernate, Microservices, Kafka, Asynchronous Processing Frontend: ReactJS, Angular, HTML5, CSS3

Databases: PostgreSQL, MySQL, Oracle, DynamoDB

Cloud/Infra: AWS, GCP, Docker, Kubernetes, OpenShift (OCP), CI/CD Pipelines Security: JWT, OAuth2, RBAC, Authentication/Authorization Monitoring: Prometheus, Grafana, ELK Stack

Tools: Git, Maven, Jenkins, IntelliJ, VS Code, Postman, SoapUI Methodologies: Agile/Scrum, Code Reviews, Continuous Deployment Education

University of North Texas 2023 – 2024

Master of Science in Data Science Denton, TX

Chaitanya Bharathi Institute of Technology 2017 – 2021 Bachelor of Engineering in EEE India

Contact this candidate