My Resume
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