Venkata Sai

Lead Sre Devops Engineer @Visa

Austin, TX, US

Led automation initiatives for Visa\'s retail space virtual card provisioning and payment processing applications, processing $9 billion in transactions (FY 2023). Increased operational efficiency and improved system availability from 93% to 99.99%.• Reduced Mean Time to Resolution (MTTR) by 30% through effective on-call rotations and incident response.• Migrated applications from VMs to GCP microservices, enhancing data processing efficiency and scalability.• Implemented disaster recovery (DR) plans, ensuring critical applications maintained high availability (RTO/RPO).• Managed critical applications, ensuring stability through proactive maintenance and performance optimization.• Automated operational processes, streamlining workflows and reducing manual intervention.• Utilized Python for creating and managing CI/CD pipelines in Jenkins, enabling automated build, test, and deployment workflows for various applications.• Deep expertise in Azure Entra ID for identity and access management, including configuring RBAC for secure resource permissions. • Supported complex infrastructure and applications leveraging Azure Kubernetes Service (AKS), Kafka, and Elasticsearch for container orchestration and data streaming.• Configured and optimized Apache Tomcat and JBoss application servers for hosting Java applications, improving performance and stability.• Integrated DNS management with Infrastructure-as-Code (IaC) tools like Terraform and Ansible to streamline deployment processes and enforce configuration consistency.• Implemented automated DNS updates during CI/CD pipelines for seamless deployment and environment updates in microservices architecture.• Designed and deployed scalable and reliable AWS cloud infrastructure, including EC2 nodes and VMware VMs.• Utilized Terraform for IaC, Docker & Kubernetes for containerization, and GitLab/GitHub for version control.