Madeshwaran R

Results-driven Technical Application Support Engineer & Site Reliability Engineer with proven success in optimizing infrastructure and deployment processes across cloud-native environments. Experienced in AWS, CI/CD, monitoring tools, and infrastructure automation, with a strong focus on uptime, system performance, and operational efficiency. Known for reducing manual work, automating deployments, and enhancing observability in enterprise systems.

Application Support Engineer - Team Computers - Chennai

(2025-01 - 2026-07)

• Administered and maintained UNIX/Linux systems (CentOS, Ubuntu) in production and development environments, ensuring high availability and reliability.
• Ensured high availability of applications by monitoring system health and resolving incidents.
• Managed alerting and incident response workflows using Moogsoft, JIRA, and ServiceNow.
• Conducted system maintenance: server restarts, memory upgrades, and OS patching on Linux servers.
• Tuned PostgreSQL for performance improvements.
• Designed and maintained CI/CD pipelines using GitHub Actions and Jenkins, enabling faster and more reliable releases.
• Orchestrated deployments using Harness for various deployment types: config, partial, and full-stack.
• Built and maintained real-time Grafana dashboards to track system health metrics (CPU, memory, disk, network).
• Integrated Dynatrace OneAgent and ActiveGate on AWS EC2 instances for monitoring and observability.
• Automated AWS infrastructure provisioning using Terraform, including resources like EC2, S3, IAM roles, Security Groups, VPC, Subnets, and Route 53.
• Created and maintained reusable Terraform modules to standardize and scale AWS infrastructure across projects.
• Established observability best practices and created documentation/playbooks to guide teams on effective use of OpenTelemetry.
• Supported incident response, performed root cause analysis, and reduced MTTR by streamlining runbook executions with automated recovery scripts.
• Wrote custom shell scripts to support CI/CD pipelines in Jenkins, including build, test, deployment, and rollback processes.
• Created and maintained correlation searches to proactively identify incidents and anomalies.
• Developed and managed Splunk dashboards, alerts, and reports to monitor system and application health.
• Used Splunk SPL queries to analyze service health, debug issues.
• Integrated Ansible with Jenkins pipelines for automated build and deployment processes.
• Automated canary, blue-green, and rolling deployments in Harness to ensure zero-downtime releases.
• Integrated Harness pipelines with GitHub, GitLab, Jenkins, and Terraform for seamless source-to-deploy workflows.
• Configured deployment strategies and rollback mechanisms in Harness to improve release reliability.
• Troubleshot and optimized playbook execution to improve performance and reduce deployment times.
• Designed and deployed OpenTelemetry collectors to gather and export distributed traces, metrics, and logs from microservices running on AWS.

Technical Application Support Engineer - Wipro - Chennai

(2021-12 - 2024-05)

• Deployed and managed AWS resources: EC2, RDS, ELB, Route 53, VPC, subnets, IGWs, and VPC peering.
• Configured S3 lifecycle policies and scripted resource management with Terraform.
• Maintained IAM policies and implemented role-based access control for AWS environments.
• Used AWS CLI, configured CloudTrail, and monitored with CloudWatch.
• Setup Git, Jenkins, and handled automation tasks.
• Created dashboards in Dynatrace, configured OneAgent and ActiveGate.
• Monitored and debugged logs via Kibana.
• Instrumented critical services using OpenTelemetry SDKs and auto-instrumentation agents to enhance end-to-end visibility and detect performance bottlenecks.
• Leveraged OpenTelemetry traces and metrics during incident response and postmortems, significantly reducing mean time to detect (MTTD) and mean time to resolve (MTTR).
• Integrated Datadog with cloud infrastructure (AWS) to enable full-stack observability and performance monitoring.
• Created shell scripts for automated monitoring, alerting, and log parsing to proactively detect issues in production environments.
• Used Splunk SPL queries to analyze service health, debug issues, and ensure SLA compliance.
• Integrated Splunk with Jenkins and other CI/CD tools to track deployment failures and application errors.
• Designed, developed, and maintained Ansible playbooks and roles to automate provisioning, configuration management, and application deployments across multiple environments.
• Automated deployment of middleware, web servers (Apache, Nginx, Tomcat), and databases (MySQL, PostgreSQL) using Ansible.
• Automated log monitoring, system health checks, and service restarts using shell scripts to ensure high availability.
• Collaborated with Dev, QA, and Ops teams to streamline release management and standardize deployment processes via Harness.
• Designed and implemented CI/CD pipelines in Harness for automated build, test, and deployment processes across multiple environments.
• Used shell scripting to extract, process, and analyze system performance data (CPU, memory, disk usage) for proactive monitoring.

Bachelor of Engineering - B.E - S A Engineering College (2016 - 2020)