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Srikar - Java Developer

[email protected]

Location: Atlanta, Georgia, USA

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Srikar Cherukuri [email protected] +1-4694645448 https://www.linkedin.com/in/srikarcherukuri/ Sr. Java Full Stack Developer Carrer Summary 8+ Years of experience in developing and deploying large-scale, Object-Oriented, web-based Client-Server applications using Java and J2EE, following SDLC processes. Expertise in Agile, Scrum, Waterfall methodologies to manage development processes and deliver high-quality products. Proficient in Core Java, including object-oriented programming, Java SE APIs, concurrency, exception handling, I/O operations, and JVM internals. Extensive experience with the Spring Framework (Core, Web, REST Services, Data, Batch, AOP, Security). Skilled in UI development with HTML, CSS, JavaScript, and frameworks like Angular and React.js for responsive, user-friendly interfaces. Experience utilizing Java 8 features (Lambda, Stream API) for improved performance in data operations. Strong background in designing and deploying Microservices with Spring Boot, following the 12-factor app methodology. Solid understanding of RESTful and GraphQL based web services, Service-Oriented Architecture (SOA) and Microservices architectures. Proficient with SQL and NoSQL databases (MySQL, PostgreSQL, MongoDB, Redis), including designing and optimizing stored procedures. Expertise in design patterns (e.g., Singleton, Factory, Circuit Breaker) to improve code maintainability and scalability. Skilled in messaging systems like Apache Kafka for reliable service communication in distributed systems. Proficient in AWS services (EC2, S3, RDS, Lambda, etc.) to build scalable, secure applications. Expertise in authentication mechanisms (OAuth 2.0, JWT) to secure web applications and APIs. Experienced in CI/CD using Jenkins, Maven, and GitHub for automated build, test, and deployment pipelines. Skilled in Docker and Kubernetes for containerization and managing applications in diverse environments. Experienced in testing frameworks (JUnit, Mockito, Selenium, Postman) for unit, integration, and end-to-end tests, with tools like SonarQube for code quality. Technical Skills Programming and Scripting Languages Java 8/11/17, Python, SQL Front-End Technologies Angular, React, HTML5, CSS, Bootstrap, JavaScript, jQuery, TypeScript Back-End Technologies JDK, J2EE, Spring Framework (Core, Web, JDBC, Rest Services, Data JPA, Batch, AOP, Transaction, Security), Hibernate. Database Technologies Oracle, DB2, MYSQL, MSSQL, MongoDB, Redis. Cloud EC2, S3, ELB, RDS, VPC, Route53, Lambda, Cloud Watch, Cloud Formation, IAM, SNS, SQS. Messaging Systems Kafka, JMS. Security OAuth 2.0, JWT (JSON Web Token) Log Monitoring Log4j, Sl4j Build and Automation Tools Maven, Gradle, Jenkins Methodologies Agile (Scrum), TDD (Test-Driven Development) IDE Eclipse, STS (Spring Tool Suite), IntelliJ, VS Code Testing Automation Junit, Mockito, Selenium. PROFESSIONAL EXPERIENCE: Sr. Java Full Stack Developer | Retail Business Services, USA. Jan 2023 to Till Date As a Java Full Stack Developer, my primary focus at Retail Business Services is to refine our online retail platform to enhance user experience and drive customer satisfaction. Together with my team, we're diligently integrating new features tailored to the needs of online shoppers. These enhancements include personalized product recommendations, streamlined checkout processes, and an intuitive customer support interface. Engaged in the full software development lifecycle with Agile methodology, including requirements gathering, analysis, design, development, testing, and maintenance phases. Designed, developed, and deployed microservices architecture using technologies like Spring Boot, fostering a scalable and modular system. Implemented J2EE components using Spring MVC, Spring IOC, Spring transactions, AOP, Batch, and Spring security modules for robust functionality. Integrated Oracle and MongoDB databases as the backend repositories for Spring Boot applications, leveraging Spring Data JPA for Oracle and Spring Data MongoDB for MongoDB to interact with the respective databases. Developed and maintained data access layer using Hibernate and JPA annotations, mapping Java objects to relational database tables. Crafted the user interface using React JS, HTML5, CSS3, JavaScript, AJAX, and JSON, providing a responsive design accessible from any device. Utilized Bootstrap for responsive design and employed ReactJS to create views as a Single Page Application. Developed reusable and composable React components, utilizing JSX syntax, props, state, and lifecycle methods to create interactive and dynamic UIs. Implemented Redux for state management in React applications, utilizing centralized stores, actions, reducers, and middleware to manage and synchronize application state across components. Designed and maintained Redux stores, defining normalized data structures, state slices, and selectors for efficient state manipulation and retrieval. Deployed and managed the project on AWS, leveraging services such as EC2, S3 Buckets, EBS, Lambda. Con gured AWS Lambda event sources and automated responses to various events, including HTTP requests via API Gateway. Designed and developed serverless applications using AWS Lambda, triggering functions via API Gateway, S3 events, and DynamoDB streams. Built and deployed microservices on AWS using Lambda, API Gateway, Step Functions, and SQS for scalable event-driven architectures. Integrated AWS Lambda functions with RDS, DynamoDB, and S3, ensuring seamless data flow and minimal latency in real-time systems. Secured Lambda-based services using IAM roles and policies, ensuring least-privileged access and compliance with enterprise standards. Developed Python scripts for automating routine DevOps tasks such as log parsing, server health checks, and deployment validations. Wrote Python scripts to manage Jenkins jobs, trigger pipelines, and monitor build outcomes via REST and CLI integrations. Utilized Python for log file analysis, pattern recognition, and proactive issue detection across Java application logs. Created log monitoring and alerting for Lambda functions using CloudWatch, enabling fast troubleshooting and observability. Integrated OAuth 2.0 into authentication and authorization processes, ensuring robust security measures for user identity and data protection. Secured REST APIs using OAuth 2.0 authorization flows like client credentials, authorization code, and refresh token for diverse client needs. Enabled role-based access control (RBAC) and scope-based permissions by parsing claims from OIDC tokens in Spring Boot services. Configured API proxies to handle cross-origin resource sharing (CORS), content negotiation, protocol translation, and traffic routing for distributed API architectures and hybrid cloud environments. Implemented Redis Cache to store frequently accessed data, reducing database hits and significantly improving application response times and overall performance in high-throughput environments. Integrated Kafka producer and consumer applications on Kafka cluster setup with Zookeeper. Utilized GIT for version control, and JIRA for reporting Bugs, ensuring ef cient collaboration and issue tracking. Implemented CI/CD pipelines using Jenkins to automate build, test, and deployment processes for Java-based applications. Utilized Maven for project management and build automation, ensuring consistent and reproducible builds across different environments. Integrated Docker into CI/CD pipelines to containerize Java applications, and Kubernetes for container orchestration, ensuring consistency and portability across development, testing, and production environments. Configured Jenkins jobs to execute Maven builds, run unit tests, and package Spring Boot applications for deployment. Implemented extensive unit test suites using JUnit to validate the functionality of critical backend service components, ensuring code stability and reliability. Employed Mockito to mock external dependencies and simulate various scenarios during unit testing, enabling thorough testing of edge cases and error conditions. Tech Stack: Java 11/17, J2EE, Spring 4.x, Spring Boot 3.x Hibernate 4.x, Restful Web Services, Micro-Services, HTML 5, CSS 3, Bootstrap, React, JSON, React, Maven 3.0, AWS EC2, AWS IAM, S3, Docker, Jenkins, Git, Junit 4.4, Mockito, Log4j, Apache Kafka, MongoDB, Oracle 11g, Agile Scrum. Sr. Java Full Stack Developer | Capital One, Plano, Texas. Sep 2021 to Dec 2022 Working closely with a talented team, we embarked on a mission to develop an innovative application aimed at ensuring that every digital offering within Capital One's extensive array of services not only met but exceeded the highest standards of digital excellence. With a vast customer base exceeding 100 million individuals, the significance of this endeavor was paramount. Employed Agile (SCRUM) methodologies for the development and testing of the infotainment module. Implemented Micro-Services using Spring Boot, achieving loose coupling between layers, and moving towards Restful Services. Developed and implemented Business Requirements using the Spring MVC framework and Spring Boot, addressing cross cutting concerns such as logging, authentication, and system performance with Spring AOP. Developed Hibernate DAO classes with Spring ORM for persistence operations on the database and developed HQL, and SQL queries for data retrieval. Integrated PostgreSQL with Spring Boot applications as the backend database for efficient data storage and retrieval and configured Spring Data JPA with PostgreSQL dialect to interact with the PostgreSQL database using Hibernate ORM. Implemented Spring Batch for lightweight and comprehensive batch application solutions. Utilized Angular to create a Single Page Application (SPA), binding data to specific views and synchronizing data with the server. Refactored and enhanced an existing Angular application, adhering to strict MVC patterns for improved source code maintenance and scalability. Utilized AWS for high availability practices and deploying backup/restore infrastructure. Developed serverless Java functions using AWS Lambda, leveraging the AWS Lambda Java runtime and Lambda handler interface to process events and execute business logic. Deployed and maintained Java Spring Boot microservices on AWS EC2 instances using custom AMIs, auto-scaling groups, and ALBs. Designed infrastructure using Terraform to provision EC2, ECS, VPC, IAM, and security groups declaratively. Integrated Amazon S3 for storage of application assets, logs, and backups, enabling seamless interaction via AWS SDK for Java. Developed Python scripts to automate configuration management and environment setup across dev, QA, and UAT stages of Java microservices. Employed Apache Kafka and developed Kafka producers and consumers in Java applications to publish and consume messages from Kafka topics. Utilized Git commands for common version control tasks such as branching, merging, committing, and rebasing. Configured Jenkins jobs to trigger Maven builds, run unit tests, and package Java applications into deployable artifacts. Developed and maintained Terraform scripts to provision and configure resources across AWS. Integrated version control system Git with Jenkins pipelines to automate code integration and continuous integration workflows. Utilized Docker to containerize Spring Boot applications and Docker Compose for local multi-container setups. Deployed and managed these applications in Kubernetes clusters. Worked on OAuth client registration, token validation, and introspection endpoints for secure integration with external applications. Validated and decoded ID tokens and access tokens using JWK (JSON Web Key) validation libraries and custom authentication filters. Integrated OAuth 2.0 authentication in Spring Boot applications using Spring Security and JWT, enabling secure token-based access control. Implemented Log4j for logging purposes with defined debug levels and Integrated Splunk for aggregating logs from different systems and implemented custom monitoring systems through Splunk into deployment processes. Utilized JUnit annotations such as @Test, @Before, @After, and @RunWith to define and execute test scenarios. Mocked dependencies and external dependencies using Mockito to isolate units for testing. Tech Stack: Java, J2EE, JDK 11, Spring 4.x, Spring Boot 3.x, Xml, Angular, Bootstrap, TypeScript, CSS 3, Hibernate 3.x, Git, Aws, Jenkins, Web Services, SoapUI, JSON, Log 4j, PostgreSQL DB, Agile. Sr. Java Developer | Mercedes Benz, India Jan 2020 to Jul 2021 Played a key role in developing a scalable platform for Mercedes-Benz, collaborating throughout the SDLC. Leveraged Java and Spring Boot to optimize performance, supporting advanced automotive features and seamless integration. This contributed to a 25% increase in online sales and enhanced customer satisfaction, driving innovation in the automotive industry. Played a key role as a Senior Java Developer, contributing to various SDLC phases, including requirement gathering, design, analysis, and code development. Designed, developed, and deployed microservices architecture using Spring Boot and utilized Spring Boot's dependency injection, auto-configuration, and embedded server features to simplify microservice development. Implemented RESTful APIs and microservices endpoints using Spring MVC for communication between microservices. Leveraged Spring Cloud components such as Eureka for service discovery, Ribbon for client-side load balancing, and feign for declarative REST client. Implemented distributed tracing and monitoring using Spring Cloud Sleuth and Zipkin for end-to-end visibility in microservices architecture. Implemented fault tolerance and resilience patterns such as circuit breakers with Spring Cloud Circuit Breaker (Hystrix) to handle failures gracefully. Leveraged React JS to create loop directives and components, facilitating dynamic rendering of views and object model updates. Utilized Bootstrap and React JS to develop Controllers handling client-triggered events and sending requests to the server. Con gured Hibernate for data persistence to the Microsoft SQL Database, utilizing Hibernate Session Factory for database connections. Implemented persistence layer features using Hibernate framework, such as HQL queries and Criteria. Utilized Docker for fast deployment of products to the development environment and for application xing. Implemented Kafka for Publish/Subscribe pattern and employed multithreading to process data in chunks for enhanced performance. Followed coding best practices, including removing unnecessary casting, using generics in Hash Map, and employing Collections and Design patterns. Managed version control with GIT and used JIRA for issue tracking. Utilized Maven as a build tool to retrieve all dependencies required for the application. Utilized Selenium WebDriver for automated testing of web applications, ensuring functionality, compatibility, and regression testing. Tech Stack: Java, J2EE, JDK 11, HTML, CSS, Bootstrap, JavaScript, React JS, Spring Dependency Injection, Spring 3. x, Hibernate 3. x, Azure, Kafka, Docker, Maven, JIRA, Microsoft SQL, XML, Unix/Linux, PL/SQL, Oracle 10g. Java Developer | Unilever Home and Personal Care, India Jan 2017 to Dec 2019 Actively participated in the full software development lifecycle, including Design, Development, Testing, and Implementation. Designed and implemented custom made data structures based on the existing data structures for customized services. Overhauled the back-end codebase, achieving a 30% reduction in code complexity by introducing reusable components and applying industry-standard design patterns. Designed and developed RESTful APIs, managed databases, and implemented event-driven code to efficiently handle data ingestion and updates. Conducted research on JMS solutions to evaluate high availability messaging backends for the system, leading to the successful integration of JMS for reliable communication. Gained a deep understanding of messaging APIs, including publish/subscribe models and queue management. Utilized Hibernate ORM to map the application s data from the MVC model to the Oracle relational database schema, improving data persistence. Contributed to coding, debugging, and unit testing across multiple system modules to ensure quality and performance. Designed and implemented a regression test suite, automating testing using JUnit test cases to ensure consistency and reliability. Developed robust backend services with Spring Boot, leveraging its capabilities for rapid application development, and integrated Spring Data JPA, Spring Security, and Spring Cloud for comprehensive functionality. Facilitated seamless data communication between the front end and server using JSON to transfer requests and responses. Enhanced data persistence by implementing Hibernate ORM and JPA for efficient object-relational mapping. Utilized Apache Maven for build configuration, packaging, and deployment of application projects. Designed of a single-page, Ajax-driven HTML application, focusing on optimizing user experience and implementing services for key modules such as Account Creation and Maintenance. Tech Stack: AJAX, HTML, JavaScript, CSS, Spring, Hibernate, JBoss, JUnit, DB2, DB Visualizer, Eclipse IDE, Web Services, XML Schema. Certifications AWS Certified Cloud Practitioner Skills Education Master of Science in Computer Science UMKC Bachelor of technology in Computer Science SNIST Keywords: continuous integration continuous deployment quality analyst user interface javascript sthree database procedural language Idaho