AJAY AYYAPPAN
Chennai
Summary
Accomplished Senior DevSecOps Engineer at Verizon, specializing in AWS and Kubernetes environments. Expert in Terraform and CI/CD workflows, enhancing security and compliance. Proven ability to troubleshoot complex production issues while fostering collaboration across teams. Adept at implementing observability solutions, driving operational excellence, and ensuring robust infrastructure management.
Overview
9
9
years of professional experience
Work History
Senior DevSecOps Engineer | SRE| Platform Engineer
VERIZON
09.2023 - Current
- Supported design, build, and operation of enterprise AWS and Amazon EKS environments across development, QA, staging, and production.
- Built reusable Terraform modules and infrastructure as code for VPC, IAM, EKS, Route 53, ALB, ECR, RDS, and shared AWS services.
- Helped implement Terraform CI/CD workflows for formatting, validation, security checks, OPA policy review, plan approval, and apply.
- Added Checkov and tfsec scans for IaC security and compliance, with OPA policy-as-code validation.
- Supported Jenkins, GitHub Actions, and GitLab CI/CD pipelines for build, test, security checks, artifact handling, and deployment.
- Integrated SonarQube, Fortify, Black Duck, Trivy, 42Crunch, and Sysdig Secure for SAST, SCA, API, container, and runtime security checks.
- Managed application and infrastructure artifacts in JFrog Artifactory, Nexus Repository, and Amazon ECR with versioning, repository control, and promotion across environments.
- Supported GitOps application delivery using Argo CD and Helm across Kubernetes environments.
- Maintained EKS lifecycle tasks, including cluster provisioning, upgrades, node groups, add-ons, capacity planning, and platform upkeep.
- Configured Kubernetes autoscaling and workload placement using Karpenter, Cluster Autoscaler, affinity and anti-affinity, taints and tolerations, resource requests and limits, and topology-aware scheduling.
- Set up AWS and Kubernetes integrations such as AWS Load Balancer Controller, ExternalDNS, IRSA, EKS Pod Identity, AWS Secrets Manager, and EBS CSI Driver.
- Applied Kubernetes security controls through RBAC, IAM integration, NetworkPolicies, least-privilege access, and secrets management.
- Built observability and monitoring with Prometheus, Grafana, Loki, Fluent Bit, OpenTelemetry, Splunk, Datadog, Dynatrace, and Amazon CloudWatch for metrics, logs, traces, dashboards, and alerting.
- Supported SRE practices with SLIs, SLOs, alert tuning, incident response, RCA, operational runbooks, and post-incident reviews.
- Troubleshot production issues across Kubernetes scheduling, networking, ingress, DNS, IAM, storage, resource limits, CI/CD failures, and AWS services.
Senior DevOps Engineer
TATA CONSULTANCY SERVICES (TCS)
05.2022 - 09.2023
- Supported aws infrastructure and deployment environments for enterprise e-commerce applications across multiple environments.
- Helped build and maintain jenkins and github ci/cd pipelines for automated application builds and deployments.
- Assisted with terraform-based aws infrastructure provisioning across development and production environments.
- Built and maintained docker images and helm charts for kubernetes application deployments.
- Administered aws services including ec2, iam, vpc, route 53, alb, auto scaling groups, and security groups.
- Supported production deployments, release tasks, incident troubleshooting, infrastructure updates, and environment stabilization.
- Worked with development, qa, and infrastructure teams to resolve deployment and production issues.
DevOps Engineer
IBM / KYNDRYL
03.2020 - 05.2022
- Supported enterprise CI/CD platforms using Jenkins, GitHub, Maven, Nexus Repository, Docker, and Kubernetes.
- Automated application build, artifact management, testing, and deployment workflows.
- Built and maintained Docker-based application deployment workflows for Kubernetes environments.
- Monitored production environments using Prometheus, Grafana, Splunk, and Amazon CloudWatch.
- Participated in production support, incident management, RCA, release activities, and troubleshooting.
- Developed Bash and Shell scripts to automate recurring operational and deployment activities.
Linux Administrator
IBM INDIA PRIVATE LIMITED (Pay role) SuperSeva
12.2017 - 03.2020
- Supported administration of RHEL servers hosted on VMware infrastructure.
- Assisted with Linux user administration, patch management, storage administration, backup validation, and system monitoring.
- Handled production incidents, change requests, maintenance activities, and scheduled infrastructure operations in line with ITIL processes.
- Wrote shell scripts to automate routine Linux administration and operational tasks.
- Supported application releases, maintenance windows, infrastructure changes, and payroll: SuperSeva.
- Payroll: SuperSeva
Education
Bachelor of Engineering - Mechanical Engineering
MNSK College of Engineering
01-2017
Skills
- AWS services: EKS, EC2, VPC, IAM, Route 53, ALB, NLB, ECR, RDS, S3, DynamoDB, KMS, ACM, WAF, CloudWatch, CloudTrail
- Kubernetes and containers: Kubernetes, Docker, Helm, Amazon EKS, Karpenter, Cluster Autoscaler, AWS Load Balancer Controller
- Infrastructure as code: Terraform, CloudFormation, Ansible
- CI/CD and GitOps: Jenkins, GitHub Actions, GitLab CI/CD
- Artifact management: JFrog Artifactory, Nexus Repository
- DevSecOps and security: SonarQube, Fortify, Black Duck
- Observability and monitoring: Prometheus, Grafana
- Operating systems: RHEL, Ubuntu
- Artifact Management:
- JFrog Artifactory, Nexus Repository, Amazon ECR
- DevSecOps & Security:
- SonarQube, Fortify, Black Duck, Trivy, 42Crunch, Sysdig Secure, SAST, SCA, DAST, API Security, Container Security, Runtime Security, IaC Security, Policy as Code, HashiCorp Vault, Secrets Management
- Observability & Monitoring:
- Prometheus, Grafana, Loki, Fluent Bit, OpenTelemetry, Splunk, Datadog, Dynatrace, Amazon CloudWatch
- Operating Systems:
- RHEL, Ubuntu, CentOS, Amazon Linux
Timeline
Senior DevSecOps Engineer | SRE| Platform Engineer
VERIZON
09.2023 - Current
Senior DevOps Engineer
TATA CONSULTANCY SERVICES (TCS)
05.2022 - 09.2023
DevOps Engineer
IBM / KYNDRYL
03.2020 - 05.2022
Linux Administrator
IBM INDIA PRIVATE LIMITED (Pay role) SuperSeva
12.2017 - 03.2020
Bachelor of Engineering - Mechanical Engineering
MNSK College of Engineering