Sreejith Sreekumar Email & Phone Number

Dubai, United Arab Emirates

Pune, Maharashtra, India

Oversaw application management for CRM across on-premise and cloud platforms.Configured CI/CD pipelines using Jenkins, ArgoCD and provisioned infrastructure components.Conducted POC for ArgoCD implementation as the primary deployment tool for AWS EKS Clusters, reducing deployment inconsistencies.Managed deployments using ArgoCD ApplicationSets and the App of Apps pattern.Handled user access and authorization via ArgoCD RBAC.Integrated ArgoCD with HashiCorp Vault for secret management.Set up Prometheus and Grafana for monitoring, with Alertmanager rules for out-of-sync alerts.Researched and implemented GitOps environments, release promotion, and Kubernetes manifest management using Kustomize and Helm.Utilized IaC tools like Terraform to provision/manage AWS resources, ensuring reproducibility and scalability.Managed AWS services (EC2, VPC, S3, IAM, EKS, RDS, CloudWatch, Route 53, ALB) for scalable, highly available solutions.Designed Auto Scaling groups with ELB for enhanced scalability and fault tolerance.Implemented Prometheus, Grafana, CloudWatch, and EFK Stack for monitoring/logging on EKS.Developed Ansible infrastructure, automating patching/upgrades for 15+ Essbase WebLogic servers.Automated CRM Siebel application patching with shell scripting, reducing time from 180 to 60 minutes.Created shell scripts for disk space/resource/process monitoring, improving system reliability.Optimized AWS cloud costs by implementing a Python script with Lambda to delete unused EBS snapshots.Coordinated with development and other teams to resolve application and infrastructure issues.Maintained cyber hygiene by remedying CVE/GEM vulnerabilities and conducting timely upgrades, resolving 1000+ vulnerabilities.Delivered L3-level support, diagnosing/troubleshooting infrastructure and application issues to minimize downtime.

Pune, Maharashtra, India

Provided 24/7 global web service support for banking applications on Linux, maintaining 99.9% uptime and resolving incidents within 30 minutes.Managed Jenkins CI/CD pipelines, integrating Git, SonarQube, and Nexus, and deployed applications on Kubernetes clusters.Efficiently handled Kubernetes cluster issues, wrote Dockerfiles for image creation, and YAML files for deployments, improving consistency and reducing setup time.Administered AWS EC2 instances, achieving a 15% reduction in cloud infrastructure costs, and used Terraform for repeatable, version-controlled resource provisioning.Installed and configured web servers (Apache, Nginx) and application servers (WebLogic, JBoss, Tomcat), enhancing server response times and reliability.Automated server configuration with Ansible scripts, reducing manual setup time.Managed 100+ deployments across Dev, UAT, and PROD environments using CI/CD, ensuring timely and smooth releases.Troubleshot WebLogic server issues by gathering thread and heap dumps, collaborating with developers for resolution.Deployed Prometheus and Grafana for monitoring, configured node exporter and alert manager, improving proactive issue resolution by 30%.Developed shell scripts for task automation, reducing incident volume and manual workload.Managed P1 and P2 incident escalation calls, led root cause analysis, and conducted bi-weekly client meetings to update on problem management and automation progress.Implemented SSH and SFTP for automation, and integrated Siteminder for Single Sign-On, enhancing user experience and security.

Pune, Maharashtra, India

As a fresher, I gained exposure to Linux, Web Servers, Application Servers, Application Deployment and Software Development Lifecycle (SDLC) processes.Gained insight into enterprise applications, their design process, testing methodologies in lower environments, and the deployment procedures to production environments.Learnt the process of incident management and change managementProvided support for 18 applications, including configuring Dev, UAT and PROD environments tailored to each application's requirements and managed the deployment of EAR files across these environments.Acquired hands-on experience with WebLogic Application Server 12c, JBoss Application Server 6.4.7, and Tomcat Server, encompassing their installation, configuration, and maintenance. Installed and configured a Jenkins server to automate the build and deployment process. Managed plugins, secured the Jenkins environment, and set up master/slave configurations.Troubleshooting production issues and coordinate with development team to streamline code deployment.Experience in pre-production and production application release deployment activities. Prepared deployment plan for all applications prior to each production deployment and presented it to all stakeholders