java full Stack Developer

CHARAN KUMAR KAMASANI

+1-913-***-**** ****************@*****.*** Kansas City, MO LinkedIn Portfolio

PROFESSIONAL SUMMARY

Skilled Java Full Stack Developer with over 3 years of experience in building scalable, high-performance applications using Java 17, Spring Boot microservices, Python, and SQL. Proficient in developing RESTful APIs and responsive frontends using Angular, React, HTML, CSS, and JavaScript. Experienced with AWS services like EC2, S3, RDS, and Lambda for cloud deployment, and working with databases such as PostgreSQL, MongoDB, and DynamoDB. Hands-on with Docker, Git, Maven, and Jenkins for CI/CD, and familiar with Apache Kafka for real-time data processing. Adept at Agile methodologies, test-driven development (TDD), and writing clean, maintainable code in collaborative team environments.

TECHNICAL SKILLS

Programming Languages: Java (Core, Java 8+), Node.js, JavaScript, TypeScript, Python, SQL, PL/SQL

Frontend Development: Angular, React, JavaScript, TypeScript, HTML5, CSS3, Bootstrap, JSP

Backend Frameworks: Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Hibernate, Microservices Architecture, REST APIs, SOAP Web Services, Serverless (AWS Lambda, API Gateway), Java Servlets, JSP, Messaging Queues (RabbitMQ, Kafka)

Cloud Platforms & Services: AWS (EC2, S3, RDS, Lambda, Elastic Beanstalk, DynamoDB, CloudWatch, IAM, Elastic Load Balancer, Auto Scaling), Basic Azure (App Services, Azure DevOps))

Databases: MySQL, PostgreSQL, MongoDB, Redis, SQL Server

Tools & Platforms: Git, GitHub, GitLab

API Development & Testing: REST APIs, POSTMAN, JUnit

CI/CD & Automation: Jenkins, Azure DevOps, Python scripting for automation

Development Practices: Agile / Scrum

Code Quality & Security: SonarQube, Fortify, Git, Jira

Architecture & Deployment: Heroku, Netlify (for small project deployment)

Deployment & Architecture: Docker, Kubernetes (basic), Terraform (basic), AWS Elastic Beanstalk, Heroku

PROFESSIONAL EXPERIENCE

Software Engineer

AMERICAN EXPRESS, Texas Aug 2024 – Present

Gained hands-on experience developing full-stack web applications for risk analysis and rewards management using Java (Spring Boot) and React/Angular.

Gained exposure to designing and integrating RESTful APIs to connect customer-facing dashboards with backend systems.

Used MongoDB to manage dynamic reward structures and customer segmentation data efficiently.

Integrated Apache Kafka to handle real-time transaction streams and trigger risk-related event alerts.

Gained experience with AWS services (e.g., EC2, S3, RDS) for deploying scalable applications and managing cloud-based data storage.

Collaborated with cross-functional teams (risk, rewards, data science) to deliver features aligned with business strategy.

Participated in Agile ceremonies, sprint planning, and continuous integration using Git, Maven, Jenkins, and Docker.

Built and consumed microservices to modularize risk evaluation and reward eligibility logic, improving maintainability and scalability of backend systems.

Developed and maintained unit and integration tests using JUnit and Mockito, ensuring high code coverage and reliability across critical modules.

Containerized applications using Docker and managed multi-environment deployments, improving development-to-production consistency.

Applied Git branching strategies and conducted code reviews via GitHub/GitLab, contributing to team code quality and knowledge sharing.

Used SonarQube to identify and fix code quality issues early in the development lifecycle, aligning with secure coding and best practices.

Java Full Stack Developer

DELOITEE, India Jan 2022 – Dec 2023

•Reduced backend integration time by 30% by developing scalable web applications using Java and Spring Boot, enabling faster rollout of new features across internal platforms.

•Improved system modularity and simplified maintenance by designing RESTful APIs that enabled efficient data flow between independently deployed microservices, which minimized dependencies between teams.

•Cut frontend bug reports by 40% by building responsive and intuitive user interfaces using Angular/React, HTML5, and CSS3. Ensured optimal display across devices, reducing QA effort and improving user satisfaction.

•Reduced frontend development time through reusable components and form validations, enabling other developers to plug and play common UI patterns across multiple projects.

•Gained hands-on experience integrating NoSQL and SQL databases, using MongoDB and MySQL to manage backend logic and CRUD operations, which helped support scalable data storage for customer- facing features.

•Collaborated with frontend and backend teams to streamline data exchange via REST APIs, reducing communication gaps and enabling real-time UI updates across dashboards and reporting tools.

•Improved code quality and onboarding efficiency by writing clean, modular code and participating in regular code reviews. Actively applied feedback to accelerate learning and deliver production-ready features.

•Reduced merge conflicts and enhanced team collaboration by using Git and GitHub to manage feature branches, review pull requests, and maintain a clean, traceable codebase.

•Gained practical CI/CD exposure by working with tools like Postman and Swagger for API testing and documentation, contributing to smoother deployment cycles and automated testing pipelines.

ACHIEVEMENTS

•Developed a machine learning model to predict house prices using datasets with features like location, size, and amenities, achieving 90% accuracy and improving prediction reliability for real estate decision-making. Enhanced platform observability by integrating Prometheus, Grafana, and Splunk for real-time monitoring and proactive troubleshooting, leading to a 30% decrease in customer support response time and improved user satisfaction.

•Successfully integrated third-party APIs to extend application functionality, boosting user retention.

•Earned certifications/badges in Java, SQL, and Full Stack Development from Hacker Rank, validating proficiency in key technologies.

•Achieved good score on Hacker Rank in Java and SQL challenges, demonstrating strong problem- solving and coding skills.

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CERTIFICATIONS

•Microsoft Certified: Azure AI Fundamentals (AI-900): Microsoft Demonstrates foundational knowledge of artificial intelligence (AI) and Machine Learning (ML) concepts and services on Microsoft Azure.

•Frontend Developer Certification: Covered HTML, CSS, JavaScript, React, Git, responsive design, and front-end deployment.

•Python for Data Science, AI & Development-IBM: Covered Python programming fundamentals, data analysis, visualization, and basics AI concepts relevant to data science and development.

•Introduction to HTML5: Learned the fundamentals of HTML5, including semantic elements, multimedia integration, and responsive web design basics.

•Java Full Stack Developer Certificate (Coursera): Covered frontend and backend development using Java, Spring Boot, REST APIs, HTML, CSS, JavaScript, Angular/React, and database technologies.

EDUCATION

Master of Science in Computer Science University of Central Missouri, Missouri CGPA: 3.7

Bachelor of Technology in Electronics & Communication Engineering MITS CGPA: 9.0

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