Full-Stack Java/Kotlin Developer with AWS Cloud Experience

Chandana G

+1-945-***-**** ***************@*****.***

PROFESSIONAL SUMMARY

* ***** ** ****-***** development experience building scalable applications using Java, Kotlin, Spring Boot, ReactJS, React Native, and RESTful APIs, with proven ability to deliver in Agile/DevOps environments.

Experienced in microservices architecture, secured with Spring Security and OAuth2.

Built CI/CD pipelines with Jenkins and GitLab, using Docker and Kubernetes for containerized deployments.

Developed dynamic UIs with React 16+ and React Native, integrating with REST APIs for real-time data updates.

Worked with Oracle, MySQL, PostgreSQL, and MongoDB databases using Hibernate/JPA.

Strong expertise in Java Streams, Lambdas, multithreading, exception handling, and design patterns (MVC, DAO).

Experienced in Agile teams, TDD, and code review practices.

SKILLS

Programming Languages

Java 8/11, Kotlin, JavaScript (ES6+), SQL, PL/SQL, Python

Web Technologies

HTML5, CSS3, ReactJS, JavaScript, Angular (1x, 17), Node.js,, React Native, TypeScript, Bootstrap, jQuery, AJAX, JSON

Tools & Frameworks

Spring Boot, ACE Studio, Spring Framework (Boot, IOC, MVC, AOP, Data, Web Flow, Cloud), Jenkins, GitLab CI/CD, Docker, Kubernetes, Terraform,

Web Services

RESTful APIs, SOAP, SCIM, WSDL, JAX-RS/WS, Axis2, API Management (Apigee, Azure API Management)

Web/App Servers

WebSphere, Apache, SnapLogic Pipelines, Salesforce API,Tomcat, JBOSS, WebLogic Server.

Backend Technologies

Microservices architecture, Multithreading, Exception Handling, Hibernate, JPA,,

Databases

SQL (Oracle, MySQL, PostgreSQL) and NoSQL (MongoDB, DynamoDB), Oracle, MySQL, PostgreSQL, MongoDB, DynamoDB

IDEs

IntelliJ IDEA, Eclipse, Spring Tool Suite (STS).

O-R Mapping

Hibernate, JPA.

Testing Tools/ Others

JUnit, Selenium, TestNG, Cucumber, Postman

Version Control

Git, Azure DevOps, IntelliJ IDEA, Eclipse, Spring Tool Suite (STS)

OS & Environment

Windows, UNIX, Linux.

Cloud Technologies

AWS (EC2, Lambda, S3), Azure (Functions, App Services, API Management, Service Bus), Docker, Kubernetes, Terraform, CI/CD pipelines

Performance Optimization

Query Optimization, Caching, Load Balancing, Spark

Design Patterns

MVC, Front Controller, Singleton, Business Delegate, DAO patterns.

PROFESSIONAL EXPERIENCE

Role: Java Full Stack Developer

Client: Credit Suisse, NY, USA Feb 2025 – Present

Responsibilities:

Designed and implemented Spring Boot microservices for subscriber management, billing, network usage tracking, and plan upgrades to automate telecom operations and improve system scalability.

Developed and deployed microservices using Kotlin, Java, and Vert.X within a Spring Boot ecosystem to handle high-throughput subscriber and billing events.

Built NoSQL data solutions with MongoDB and DynamoDB while leveraging SQL-based systems (PostgreSQL) for transactional data consistency.

Created responsive dashboards with ReactJS and mobile apps with React Native, improving customer self-service adoption and cross-platform engagement.

Implemented dynamic React components using Hooks and Context API to enhance UI responsiveness and maintainability, reducing page load times.

Secured microservices with Spring Security and OAuth2 to ensure safe handling of sensitive subscriber data, maintaining regulatory compliance.

Integrated third-party CRM and billing platforms via REST APIs and Kafka topics for asynchronous data synchronization, improving operational efficiency.

Managed high-volume transactions with PostgreSQL and DynamoDB while leveraging Kafka for distributed event processing to ensure reliability and performance under peak loads.

Automated deployments using Terraform, Ansible, Docker, and Kubernetes/OpenShift to reduce deployment errors and lead time by 50%.

Configured AWS Application Load Balancers and implemented caching strategies for optimal traffic routing during peak periods, improving system availability.

Monitored microservices and Kafka clusters using AWS CloudWatch and ServiceNow for proactive incident resolution, maintaining 99.9% uptime.

Collaborated in cross-functional Agile teams and communicated with business stakeholders to align features with compliance and operational needs.

Environment: Java 11, Spring Boot, ReactJS, React Native, Kafka, AWS (Lambda, S3, DynamoDB), PostgreSQL, MongoDB, Actimize, Jenkins, GitLab CI/CD, Docker, Kubernetes, Agile/Scrum

Role: Java Full Stack Developer

Client: Pfizer, USA Feb 2024 – Dec 2024

Responsibilities:

Developed Spring Boot microservices for insurance claims processing, policy management, and customer onboarding to automate workflows and improve operational efficiency, reducing manual interventions by 30%.

Built secured REST APIs with Spring Security and OAuth2, and integrated Kotlin-based services for modular business logic.

Optimized database queries using Hibernate/JPA to improve execution time and microservice performance, achieving a 25% reduction in query latency.

Applied ACE Studio and DevOps practices to accelerate microservice deployments, reducing manual effort and improving delivery speed.

Built CI/CD pipelines using Jenkins and GitLab CI with YAML configurations to automate deployments of microservices, reducing release lead time by 40%.

Integrated RabbitMQ for asynchronous claims workflow processing to improve system throughput and handle high-volume transactions efficiently.

Performed JVM performance tuning and implemented caching with EhCache to reduce API latency and enhance service response times.

Enhanced collaboration by working in Agile squads, participating in sprint planning, daily stand-ups, and retrospectives, ensuring clear communication and shared ownership of deliverables.

Developed ReactJS portals and React Native mobile apps for policyholders to provide real-time claim tracking and policy management, increasing customer satisfaction by 20%.

Participated in Agile ceremonies, sprint planning, and retrospectives to align deliveries with business objectives, improving team productivity.

Collaborated with QA and UX teams to optimize application performance and enhance user experience, reducing page load times and improving usability metrics.

Role: Java Full Stack Developer

Client: EPAM, India Jan 2021 – July 2023

Responsibilities:

Developed responsive web interfaces using Angular and ReactJS, improving user experience and enabling seamless navigation.

Wrote and optimized SQL and NoSQL queries across Oracle, MySQL, and MongoDB to validate backend data consistency.

Integrated Angular frontends with RESTful APIs to provide real-time updates on orders, inventory, and pricing, reducing manual data reconciliation by 30%.

Implemented automated testing using Selenium, TestNG, and Cucumber; added unit testing with Jasmine and Karma for Angular components to improve QA coverage by 40%.

Conducted performance testing with JMeter to validate load handling and optimize high-traffic application performance, resulting in smoother operations during peak sales periods.

Collaborated with developers and UX/UI teams to optimize Angular components for faster rendering and implemented lazy loading & Ahead-of-Time (AOT) compilation, reducing page load times by 25%.

Applied NgRx state management for complex data flows to improve maintainability and scalability of the application.

Validated backend data consistency with SQL queries for Oracle and MySQL databases to ensure accuracy of inventory and transaction data, minimizing reporting errors.

Participated in Agile Scrum ceremonies to align development deliverables with business priorities, improving sprint predictability and team efficiency.

Coordinated with DevOps teams to maintain CI/CD pipelines for automated and reliable deployments, reducing release lead time by 30%.

EDUCATION

Masters in CS University of North Texas, USA Graduation : May 2025

B.Tech in CS Priyadarshini Institute of Technology and Science, India Graduation : April 2022

Contact this candidate