Vishal Thamman

VISHAL THAMMAN-|- | Dallas TX Summary Highly accomplished Full Stack Java Engineer, Technical Architect, and DevOps Infra Engineer with 15 years of experience in designing, developing, and deploying scalable and resilient applications. Certified Kubernetes Application Developer (CKAD) with proven expertise in architecting end-to-end solutions, implementing microservices, and optimizing CI/CD pipelines. Adept at delivering robust, secure, and high-performance applications with a focus on automation, cloudnative development, and best practices. Collaborative leader with strong communication skills, capable of driving large-scale digital transformation initiatives. Skills Cloud: AWS, GCP, OCI, Azure Infrastructure: Terraform Versioning: Git, GitHub, GitLab, Bitbucket, TFS, AWS Code Pipeline Programming: Java, .Net, PHP Frameworks: Backend: Spring Boot, Hibernate, Containerization: GKE, AKS, Kubernetes, Docker, Docker Hub Microservices Scripting: JavaScript, CLI, PHP, jQuery Storage / Database: MongoDB, Oracle 12i, MySql, DynamoDB Experience • 07/2023 - Current AAFES Dallas, TX Full Stack Engineer With Devops Managed cloud infrastructure on AWS and Azure, optimizing costs and performance for various applications. Developed infrastructure as code (IaC) using Terraform and CloudFormation to ensure consistent environments. Collaborated with development teams to enhance application performance and scalability through containerization with Docker and Kubernetes. Automated CI/CD pipelines using Jenkins, GitLab CI/CD, and ArgoCD, ensuring smooth and efficient deployments. Deployed and orchestrated microservices on Kubernetes (K8s) for scaling and resilience. Led code reviews, technical mentoring, and best practice adoption across the team, improving code quality and consistency. Collaborated with DevOps teams to ensure seamless deployment and infrastructure automation using Terraform. • 12/2019 - 07/2023 AAFES Dallas, TX SPRING BOOT MICROSERVICE ARCHITECT Architected and developed microservices-based applications using Spring Boot, improving scalability, maintainability, and fault tolerance. Designed and implemented RESTful APIs enabling efficient communication between microservices. Applied Domain-Driven Design (DDD) and Event-Driven Architecture (EDA) principles to build loosely coupled and resilient services. Integrated GCP Queues for asynchronous messaging, ensuring reliable and scalable event processing. Optimized performance by implementing caching strategies using Redis, reducing database calls and enhancing response times. Implemented JWT-based authentication and role-based authorization for secure API access. Automated CI/CD pipelines using Jenkins, GitLab CI/CD, and ArgoCD, ensuring smooth and efficient deployments. Deployed and orchestrated microservices on Kubernetes (K8s) with Helm charts for scaling and resilience. Led code reviews, technical mentoring, and best practice adoption across the team, improving code quality and consistency. Collaborated with DevOps teams to ensure seamless deployment and infrastructure automation using Terraform. Optimized microservices performance by implementing caching strategies and service discovery, resulting in a 30% reduction in response times. Conducted code reviews and implemented best practices for microservices development, ensuring code quality and maintainability. • 04/2018 - 12/2019 Pride Mobility Products Wilkes-Barre, PA ATG APPLICATION ARCHITECT Led the migration from Knockout.js to jQuery, streamlining the front-end architecture and improving maintainability and performance of the eCommerce website. Refactored and enhanced UI components for a more responsive and intuitive user experience, leveraging HTML5, CSS3, and jQuery. Upgraded and optimized the ATG backend code, improving performance, scalability, and maintainability. Developed and customized ATG Form Handlers, Droplets, and Repositories to meet evolving business requirements. Integrated ATG with third-party systems for payment processing, inventory management, and shipping logistics. Improved page load times and responsiveness by implementing lazy loading, caching strategies, and reducing DOM manipulations. Automated build and deployment pipelines using Jenkins, Maven, and Git, ensuring smooth and consistent releases. Collaborated with UI/UX designers, QA teams, and business stakeholders to deliver a seamless and user-friendly shopping experience. Provided technical mentorship to junior developers on best practices in ATG development and front-end technologies. • 12/2016 - 04/2018 AAFES Bangalore, India ATG Ecommerce Consultant Designed and implemented an in-house payment gateway within the ATG eCommerce platform, enabling secure and efficient transaction processing. Integrated Manhattan Order Management System (OMS) with ATG, streamlining order lifecycle management, including order creation, fulfillment, and tracking. Developed and configured PubSub (Publisher-Subscriber) queues for asynchronous eventdriven communication, enhancing system reliability and scalability. Customized and optimized ATG Form Handlers, Droplets, and Repositories to meet complex business requirements. Enhanced checkout workflows, including payment validation, error handling, and transaction rollback capabilities. Improved API integrations with third-party services for shipping, tax calculations, and fraud detection. Worked on performance tuning by optimizing caching, query execution, and JVM configurations, reducing load times and boosting site performance. Automated build and deployment pipelines using Jenkins, Maven, and Git, ensuring efficient and reliable releases. Collaborated with cross-functional teams, including DevOps, QA, and business stakeholders, to deliver robust eCommerce solutions. Provided technical guidance and mentorship to junior developers on ATG best practices and integration patterns. • 07/2016 - 12/2016 Al Tayer Motors Dubai SENIOR ECOMMERCE CONSULTANT Developed and maintained the ATG eCommerce platform for Al Tayer Motors, enhancing the online customer experience and optimizing business operations. Implemented Gradle build automation to streamline the compilation, testing, and deployment processes, improving development efficiency. Worked extensively with Velocity Templates (VM) to customize dynamic content rendering, creating personalized and flexible UI components. Integrated and fine-tuned Endeca Search and Guided Navigation, improving product discoverability and search accuracy. Leveraged ATG profiling and personalization features to deliver targeted content and offers based on customer behavior and preferences. Customized and extended ATG Form Handlers, Droplets, and Repositories to meet complex business requirements. Optimized database queries and caching strategies, reducing page load times and enhancing application performance. Utilized Jenkins and Git for continuous integration and version control, ensuring smooth and reliable code deployments. Collaborated with cross-functional teams, including UI/UX designers, QA engineers, and business stakeholders, to deliver robust eCommerce solutions. Provided technical mentorship to junior developers on ATG best practices, Gradle builds, and Endeca configurations. • 04/2014 - 06/2016 PwC SDC Bangalore, India Senior Software Engineer Designed, developed, and maintained eCommerce solutions using Oracle ATG Web Commerce, enhancing online shopping experiences for millions of customers. Led the implementation of ATG Commerce pipelines, BCC (Business Control Center), and Endeca Search, optimizing product discovery and personalization. Developed and customized ATG Form Handlers, Droplets, Repositories, and Scenarios to support business requirements. Integrated ATG with backend systems, including payment gateways, inventory management, and order fulfillment systems. Worked on performance tuning and optimization, reducing page load times and improving site responsiveness. Assisted in migrating legacy eCommerce applications to a microservices-based architecture, improving scalability and maintainability. Collaborated with cross-functional teams, including UI/UX designers, DevOps, and QA teams, to ensure smooth application delivery. Utilized Jenkins, Maven, and Git for continuous integration and deployment, ensuring seamless code releases. Provided technical guidance and mentoring to junior developers on ATG best practices and design patterns. • 10/2011 - 03/2014 Amplifi Commerce Bangalore, India ATG Developer Provided ATG application support and maintenance for multiple high-profile clients, including Walmart, Fox Racing, Laura Mercier, Yankee Candle, and Lululemon, ensuring optimal performance and stability. Developed and integrated UI components using HTML5, CSS3, JavaScript, and jQuery, enhancing the front-end experience across multiple eCommerce platforms. Customized and extended ATG Form Handlers, Droplets, and Repositories to meet specific customer requirements. Worked on Endeca Search configuration and tuning, optimizing product discoverability and relevance. Troubleshot and resolved production issues related to ATG pipelines, profile management, and checkout flows, ensuring minimal downtime. Improved page load times and performance by optimizing caching strategies, reducing SQL query load, and implementing lazy loading. Collaborated with cross-functional teams across different clients to implement UI/UX enhancements and backend customizations. Integrated third-party payment gateways and shipping services, ensuring seamless checkout experiences. Automated build and deployment pipelines using Jenkins and Maven, ensuring smooth code releases. Provided technical support and guidance to client teams on ATG best practices and performance optimization techniques. • 04/2010 - 09/2011 Compesys Pvt LTD Pune, India Web Developer Developed and maintained dynamic web applications using PHP 5, MySQL, jQuery, and JavaScript, ensuring high performance and user-friendly experiences. Designed and optimized MySQL databases, creating efficient queries, stored procedures, and indexing strategies to enhance application performance. Implemented AJAX-based interactions using jQuery, improving the responsiveness and interactivity of web applications. Created and integrated custom CMS solutions, allowing non-technical users to manage website content efficiently. Developed RESTful APIs for data exchange between front-end and back-end services. Built secure authentication and authorization mechanisms using PHP sessions and JWT tokens. Debugged and optimized existing PHP applications, reducing page load times and fixing security vulnerabilities such as SQL injection and XSS attacks. Designed responsive UI components with HTML5, CSS3, Bootstrap, ensuring cross-browser compatibility. Integrated third-party APIs for payment processing, social media login, and external data services. Managed version control and deployments using Git and FTP, ensuring smooth updates to production environments. Education and Training • 06/2010 Master of Science in Computer Applications Development • Pune, IND Indira Institute of Management 06/2007 Punjab, Ind Bachelor of Science in Computer Applications Panjab University Certifications CKAD (Certified Kubernetes Application Developer) Oracle E-commerce Specialist