BATHMANABAN R

Software Engineer

Email: bathmanaban2000@gmail.com

Education

• SSN College of Engineering [2017-2021]
  B.E. Mechanical Engineering, CGPA - 7.73/10

Experience

Citi Bank (2021 - 2025)

• Developed and maintained Java-based microservices for a high-availability Certificate Management system, integrating Kafka for real-time messaging.
• Migrated legacy data workflows from Ab Initio to Java + Spark, improving system maintainability and scalability
• Implemented CI/CD pipelines using Jenkins and Bitbucket, with static analysis (SonarQube) and security validation (Blackduck).
• Deployed containerized applications using Docker and AWS ECS, integrating IAM and CloudWatch for access and performance monitoring.
• Participated in Agile Scrum ceremonies, technical design sessions, and sprint planning with cross-functional teams (PMs, QAs, Infra).
• Contributed to codebase quality via rigorous code reviews, unit testing (JUnit, Mockito), and enforcement of clean code principles
• Mentored junior developers and led knowledge-sharing sessions within the team.

Projects

Portfolio Website

• Designed and developed a responsive portfolio website to showcase personal projects and technical skills.

E-commerce Customer Segmentation

• Performed customer segmentation analysis on e-commerce data to identify behavioral patterns and customer personas.
• Applied unsupervised learning (K-Means Clustering) to group customers based on RFM (Recency, Frequency, Monetary) features.
• Used data preprocessing techniques including scaling, PCA, and elbow method for optimal cluster selection.
• Visualized customer clusters using Matplotlib and Seaborn for business insights.

Certifications

• HTML Fundamentals course [Linkedin Learning]
• Python Basics [an online non-credit course authorized by University of Michigan offered through Coursera]
• Oracle Certified Associate, Java SE 8 Programmer – Oracle (2022)

TECHNICAL SKILLS

• Languages : Java8, JavaScript, Python (OOP), SQL
• Frameworks : Spring Boot, Spring MVC, Spring Security, Hibernate, React.js, JUnit, Mockito
• Tools DevOps : Jenkins, Git, Bitbucket, SonarQube, Postman, Blackduck, Jira, Agile, Scrum, CI/CD
• Cloud Containers : AWS (ECS, IAM, CloudWatch, S3), Docker, Kubernetes
• Databases : MongoDB, MySQL, Oracle SQL, Redis
• Messaging APIs : REST APIs, Kafka, Feign Client, Eureka, API Gateway

Responsibilities Undertaken

• CORE COMMITTEE member of MECHANICAL DEPARTMENT
• Event organizer of “NITRO-GP” event in SSN INVENTE 2019

Achievements

• Reduced manual QA time by 30% through automated validation scripts
• Proactively identified and resolved vulnerabilities aligning with OWASP standards.
• Received On-the-Spot Award from client for innovation and timely delivery