Teja K

Experience

1. Site Reliability Engineer

   Mimecast

   Feb 2023 — Present

   Expertise in application monitoring aligned with business requirements, including defining and deriving SLOs/SLIs and setting up alerting systems to maximize application availability.• Proficient in Jira administration and Atlassian tool management, with experience in delivering automation, custom workflows, and configurations to support Scrum-based project management across teams.• Led application migration from on-premises to Amazon EKS, leveraging Helm charts for deployment and ensuring minimal downtime during PostgreSQL database migration to AWS RDS.• Designed and implemented dedicated Security Groups for S3 and RDS services in Terraform, following the principle of least privilege to improve infrastructure security.• Managed AWS IAM roles, policies, and permissions to control application access and ensure least-privilege principles securely.• Developed modular, version-controlled Terraform code integrated with CI/CD pipelines to support Infrastructure as Code best practices and accelerate cloud resource delivery.• Expertise in using Kubernetes commands and Helm for maintaining applications running on Amazon EKS.• Built and deployed Docker images to support application migration, orchestrated with Kubernetes to ensure zero-downtime deployments.• Implemented version-controlled Puppet modules to automate Jenkins plugin upgrades, reducing manual effort and ensuring configuration consistency across environments.• Upgraded and administered GitLab, managing user access, resolving GitLab Runner issues, and troubleshooting CI failures during upgrades and code deployments.• Designed and maintained CI/CD pipelines in Jenkins and GitLab, integrating Terraform, Docker, Helm, and security scans to enable automated, reliable, and traceable deployments.• Developed Python-based exporters to expose custom application metrics in Prometheus format for proactive monitoring and observability.