Chinnadurai Periyasamy

About Chinnadurai Periyasamy

I’m a Senior Site Reliability Engineer with over 18 years of experience designing, building, and operating highly reliable, scalable, and high-performing systems across on-premises, cloud, and containerized platforms. I specialize in bridging the gap between software engineering, operations, and business goals to ensure that critical services remain resilient and performant at scale.Throughout my career, I’ve:Led enterprise-wide platform transformations, including large-scale migrations to Kubernetes, enabling scalable, automated, and resilient deployment pipelines.Championed Infrastructure as Code (IaC) practices, standardizing deployments across teams and reducing provisioning errors by 30%+.Designed and implemented observability frameworks leveraging Prometheus, Grafana, Dynatrace, Jaeger, OpenTelemetry, and AI-driven agents to proactively detect and resolve incidents, improving reliability metrics and reducing MTTR.Built AI-powered operational workflows that automate incident triage, anomaly detection, and runbook execution, freeing engineering teams to focus on innovation.Mentored and led cross-functional teams on reliability engineering, chaos engineering, and best practices, cultivating a culture of continuous improvement that reduced repeat incidents by 30%.Partnered with executive leadership to define reliability strategy, operational KPIs, and risk management practices, ensuring alignment between engineering and business objectives.Advocated for and implemented cutting-edge reliability techniques, including chaos engineering, automated failovers, and predictive monitoring, enabling enterprise-grade service availability and performance.I thrive at the intersection of technology, strategy, and operations, leveraging my deep expertise to help organizations deliver robust, scalable, and highly available systems while fostering a culture of innovation and operational excellence.

Experience

1. Senior Site Reliability Engineer

   Cognizant

   Jun 2011 — Present · CA, US

   SRE with 14+ years of experience architecting, deploying, and operating highly reliable, scalable systems at global scale. Deep expertise in SRE, performance engineering, and observability with hands-on experience across OpenTelemetry, Prometheus, Datadog, Dynatrace, Splunk, and Langfuse.Proven in defining SLIs/SLOs, managing error budgets, leading complex incident response and root cause analysis, and delivering measurable improvements in uptime, resilience, and developer productivity. Strong IaC background (Terraform, AWS CDK, CloudFormation) and CI/CD automation expertise. Specialized in AI/LLM reliability, including context engineering, prompt/system instruction design, and LLM observability, evaluation, and cost/performance monitoring.Key Skills : Large-scale distributed systems, observability, SRE best practices, high-availability, cloud-native, incident response, AI platform reliability.

Education

• Manonmaniam Sundaranar University

  Bachelor of Engineering, Computer Science