DevOps Engineer

Cloud Infrastructure & CI/CD Automation

• Scalable Cloud Orchestration: Designed, deployed, and managed production-grade AWS platforms using Elastic Beanstalk & ALB, ensuring high availability for trading and web applications.
• Containerization (ECS & ECR): Configured AWS ECS clusters and task definitions to deploy Dockerized applications, optimizing container storage and retrieval via Amazon ECR.
• Microservices Deployment: Proficient in building, packaging, and deploying containerized applications using Docker and Docker Compose for consistent environments across the lifecycle.
• CI/CD Pipeline Automation: Engineered robust CI/CD workflows using Jenkins and GitHub Actions, automating the entire build-test-deploy cycle for efficient releases.
• Multi-Environment Integration: Developed parameterized Jenkins pipelines to synchronize deployments across Dev, Staging, and Production, including automated GitHub cloning and updation.
• Network Security & Filtering: Integrated AWS WAF with ALB and CloudFront using managed rule sets and rate-based rules to filter malicious traffic and prevent DDoS attacks.
• Secure Access Control: Architected secure Bastion Host entry points to enable SSH access to EC2 instances in private subnets, ensuring controlled and audited administrative entry.
• Centralized Cloud Monitoring: Enabled comprehensive visibility by configuring Amazon CloudWatch metrics and dashboards across all AWS resources for health tracking and alerting.
• Infrastructure Maintenance: Performed routine monitoring to identify security vulnerabilities, applying critical patches to EC2 and RDS instances to maintain operational excellence.
• Source Code Management: Hands-on experience with Git/GitHub for branching strategies, repository management, and promoting collaborative DevOps culture within development teams.

Server Administrator

System Administration & Private Cloud Management

• Critical Incident Recovery: Rescued a key government department (TNGIS) from a 48-hour mission-critical outage, eventually handling 56,000+ concurrent production hits.
• Enterprise Geo-Spatial HA: Engineered High Availability for GeoServer (Tomcat) for tngis.tn.gov.in using Apache Round-Robin load balancing across Chennai (DC) and Trichy (DR) locations.
• AWS Infrastructure-as-Code: Automated end-to-end provisioning of VPCs, subnets, RDS, and Elastic Beanstalk using CloudFormation, shrinking deployment cycles from 24 hours to 30 minutes.
• Performance Engineering: Conducted deep CPU/Memory profiling per API request for high-traffic platforms, tuning Apache caching, PHP-FPM pools, and PostgreSQL parameters for 50k+ concurrent users.
• Private Cloud & Virtualization (OLVM): Architected a multi-departmental private cloud using Oracle Linux Virtualization Manager (OLVM), integrating storage, switching, and compute for dynamic VM provisioning.
• Network Security & Access Control: Implemented Squid Proxy with URL-based blocking (replacing hardware firewalls) and prototyped RADIUS/LDAP Wi-Fi authentication with AD-integrated certificates.
• Enterprise Storage & Automation: Managed NAS storage provisioning and mounting. Developed crontab-driven shell scripts for daily snapshots and PostgreSQL cluster-level backups.
• Inter-Departmental Troubleshooting: Served as expert point of contact for solving complex server slowness and infrastructure bottlenecks across 50+ live domains and government departments.
• Operational Excellence: Three-time "Best Performer" award recipient for high-impact infrastructure projects and cross-departmental support.

Internal Infrastructure Wins

High-Impact System Recovery & Optimization

• TNGIS Performance Rescue (Bare-Metal): Restructured the Tamil Nadu Geographical Information System after a critical 48-hour outage on bare-metal servers. Implemented full-stack tuning (Apache MPM, PHP-FPM, PostgreSQL) and image caching in Apache to enable 56k+ daily hits. View Live
• 12TB System Recovery: Resolved a catastrophic system lockup caused by accidental permission changes to the /bin directory. Booted into safe mode to restore default permissions, bringing 12TB of data back online within 5 hours.
• Enterprise Backup Framework: Developed and automated a comprehensive backup strategy using shell scripts across departments, successfully recovering 6TB of database during a critical failure incident.
• DR Drill & HA Readiness: Orchestrated Disaster Recovery (DR) drills and implemented failover automation, ensuring immediate service restoration and data integrity during catastrophic site failures.

Government Department Advisory

Infrastructure Consulting & AWS Cloud Migration

• GCC Infrastructure Audit: Diagnosed and resolved performance bottlenecks for Greater Chennai Corporation (GCC) on Nutanix. Eliminated server hangs that occurred under low user loads through config optimization.
• CMWSSB Latency Mitigation: Optimized the Chennai Metropolitan Water Supply (CMWSSB) platform to handle high user loads. Partnered with vendors to implement systemic fixes for reported website slowness.
• Cloud Cost Optimization: Guided the Department of Geology & Mining through an AWS migration. Delivered a high-concurrency, cost-effective HA architecture that outperformed third-party vendor solutions.
• Agri-Tech AWS Deployment: Provided end-to-end AWS architecture for the Agriculture Department. Implemented a robust stack: Amplify (Frontend), Elastic Beanstalk (API), and Aurora with RDS Proxy (Database).