Mantresh Kumar Email & Phone Number

Bengaluru, Ka, In

Bengaluru, Karnataka, India

• Deployed Percona Monitoring and Management (PMM) for database slow query monitoring, helpingthe organization reduce latency issues and gain visibility into additional database performancemetrics.• Set up Elasticsearch, Logstash, and Kibana (ELK) for Stage and Pre-Production environments,designed specifically for Kubernetes pod logging, using Logstash filters such as GROK for refineddata processing, implementing Index Lifecycle Management (ILM), and creating ApplicationPerformance Monitoring (APM) dashboards.• Transitioned from GCP Cloud Build to Jenkins for CI, significantly reducing CI costs, and automatedContinuous Deployment (CD) with ArgoCD.• Automated Pub/Sub integration with BigQuery (covering topics, subscribers, and AVRO schemaintegration) through Terraform, optimizing data flow and scalability.• Configured Prometheus and Grafana for comprehensive Kubernetes and instance monitoring,including tailored dashboards for Redshift slow queries and Redis key usage monitoring (Using LuaScript). Implemented Grafana alerts and migrated away from GCP alerts to reduce costs, includingGrafana OnCall for improved incident response.• Set up SonarQube for static code analysis, integrating it with ESLint to ensure code quality andmaintainability.• Implemented Uptime Kuma for endpoint monitoring, enhancing system reliability and uptimeawareness.

Bengaluru, Karnataka, India

- Implemented advanced Jenkins CI pipelines with declarative syntax and integrated GitHub webhooks, Maven, and SonarQube for meticulous static code analysis.- Utilized Docker for efficient image building and integrated Argo Image Updater for manifest repository updates, alongside Argo CD for automated deployment updates within Kubernetes clusters, enhancing efficiency and reliability.- Deployed and managed EFK stack on Kubernetes for efficient log management, including Ingress configuration and Elasticsearch index maintenance.- Managed AWS Secret Manager for secure credential storage, establishing automated daily backups using Boto3 and cronjobs.- Engineered monitoring solutions with Prometheus, Grafana, Kube State Metrics, and Grafana Agent for real-time insights into Kubernetes cluster health and performance.- Led containerization efforts of Node.js applications using Docker for seamless deployment to production environments.- Executed data migration from GCS Buckets to Wasabi buckets using rclone, implementing robust bucket policies to enhance security.- Implemented Application Performance Monitoring tools like Signoz, ClickHouse, and Sentry using Docker Compose for addressing critical issues and ensuring system stability.- Configured and optimized Redis key eviction policies to manage memory usage and sustain system performance.- Managed Kubernetes RBAC, TLS, Docker Secrets, and Ingress configurations for robust security and access control.- Designed custom dashboards and panels on Grafana, extracting actionable insights from Prometheus and Grafana Agent data sources.- Handled DNS management and SSL certificate configurations to ensure seamless and secure communication across systems.