Senthil Kumar Rajan
Devops EngineerAI is analyzing your overall score…
Identifying your key strengths…
Evaluating your skill match against the job requirements…
Assessing your cultural and operational fit
AI is analyzing your overall score…
Identifying your key strengths…
Evaluating your skill match against the job requirements…
Assessing your cultural and operational fit
Devops Engineer with 10+ years in AWS, Kubernetes & CI/CD
Results-driven Senior DevOps & SRE Engineer with 8+ years of experience architecting scalable, secure and automated AWS cloud infrastructure, leveraging Kubernetes (EKS), Terraform (IaC), Jenkins CI/CD, GitOps (ArgoCD), Helm and DevSecOps practices to deliver high-performance, compliance-ready environments. Achieved 60% deployment efficiency improvement, 20% cloud cost optimization and 99.95% production uptime by implementing SRE frameworks (SLI/SLO/MTTR), infrastructure as code, container orchestration, security automation and enterprise-grade CI/CD pipeline architecture. Core Competencies: Site Reliability Engineering, Kubernetes (EKS) Cluster Management & GitOps, Infrastructure as Code, Cloud Architecture & AWS Infrastructure Design, Microservice Architecture, Platform Engineering, CI/CD Pipeline Architecture, DevSecOps & Security Automation, Observability & Monitoring, Cloud Migration, High Availability & Disaster Recovery Strategy, Zero-Downtime, Blue-Green & Canary Deployments, Cloud Cost Optimization, Incident Management, RCA, Release Management, Configuration Management, Operational Excellence, Agile/Scrum, Technical Leadership & Collaboration.
Capgemini Technology Services India Limited
Senior Consultant
July 1, 2022 – August 1, 2025
India
Cognizant Technology Solutions
Senior Developer
December 1, 2014 – June 1, 2022
India
Hewlett Packard Enterprise
Technical Consultant
April 1, 2011 – November 1, 2014
India
TradeXpress
July 1, 2022 – August 1, 2025
Architected and managed AWS EKS clusters using Helm and GitOps (ArgoCD), enabling zero-downtime blue-green and canary deployments and improved release velocity across production environments. Automated end-to-end AWS infrastructure provisioning (EC2, S3, VPC, IAM) using Terraform, eliminating manual configurations, reducing drift and improving cloud governance and security compliance. Designed enterprise CI/CD pipelines using Jenkins and GitHub Actions. Integrated Docker, SonarQube and Trivy for DevSecOps automation and deployment quality improvement. Deployed and managed Istio service mesh with mTLS and Kiali dashboard for traffic observability. Implemented EKS node auto-scaling with Prometheus and Grafana monitoring, improving system reliability and performance. Led migration of on-premises workloads to AWS Lambda and Kubernetes (EKS), securing APIs via Nginx Ingress, reducing operational overhead and improving scalability and resilience. Implemented SRE best practices including incident response, error budgeting and PagerDuty on-call rotations, improving 24/7 service reliability. Optimized AWS cloud costs using EC2 rightsizing, Spot Instances and AWS Cost Explorer, achieving 20% cost reduction.
Enterprise Reporting Tool
November 1, 2019 – June 1, 2022
Provisioned and managed AWS infrastructure (VPC, EC2, S3, ALB, RDS) using Terraform (IaC) with compliance enforcement via OPA Gatekeeper. Designed high-performance Jenkins CI/CD pipelines with parallel Docker stages, improving build speed by 40%, integrating SonarQube and Trivy for DevSecOps automation. Implemented GitOps workflows using ArgoCD for automated, zero-downtime deployments on Kubernetes (EKS) with Helm-based releases. Enhanced observability using Prometheus alerts and Grafana dashboards, monitoring JVM and SQL metrics for proactive performance optimization. Strengthened cloud security and automation through ECR lifecycle policies, Ansible-based EC2 hardening (CIS benchmarks) and Python scripting for backup and log management. Provided 24/7 production support, handling P1/P2 incidents and conducting Root Cause Analysis (RCA).
Multi-resource scheduling and planning
February 1, 2018 – October 1, 2019
Provisioned and managed AWS infrastructure including EC2, S3, VPC, ASG, ALB and Cross-Region DR using Terraform and Atlantis. Implemented PR-based Infrastructure as Code (IaC) automation, enabling scalable and resilient cloud architectures. Designed secure Jenkins CI/CD pipelines integrating SonarQube and Trivy for compliant Java microservices deployments on AWS. Containerized legacy JSP/Servlet applications using Docker, automated ECR lifecycle policies and orchestrated Helm-based deployments on EKS (Kubernetes). Automated operational tasks using Python & Bash scripting for log analysis, S3 backups, tagging strategy and Linux system maintenance. Strengthened security and compliance through Ansible-based OS hardening, enforcing IAM roles and KMS encryption to meet enterprise data protection standards.
B2C ecommerce application
March 1, 2017 – January 1, 2018
Automated multi-environment CI/CD pipelines using Jenkins & Maven, streamlining build, test and deployment workflows for e-commerce applications. Containerized application services with Docker, standardizing image builds and improving deployment consistency across environments. Provisioned and managed AWS infrastructure (EC2, S3) to support secure, scalable deployments across US and Canada regions. Integrated SonarQube into CI/CD pipelines for continuous code quality enforcement and compliance. Managed Docker artifacts using JFrog Artifactory, ensuring version control and secure image repository management.
Certified Kubernetes Administrator (CKA)
Linux Foundation
June 1, 2026 – Present
Certified Terraform Associate (003)
HashiCorp
June 1, 2026 – Present
AWS Certified SysOps Administrator (Associate)
AWS
June 1, 2026 – Present
Certified in ITIL V3 foundation
Unknown
June 1, 2026 – Present
Cultural Fit Analysis
The candidate's experience across multiple companies (Capgemini, Cognizant, HPE) and diverse projects (TradeXpress, Enterprise Reporting Tool, Multi-resource scheduling, B2C e-commerce) indicates adaptability and a broad understanding of different organizational contexts. Their involvement in SRE, DevSecOps, and Agile/Scrum methodologies aligns well with modern engineering cultures that prioritize collaboration, continuous improvement, and operational excellence. The breadth of technologies and responsibilities suggests a willingness to learn and take on varied challenges.
Soft Skills & Operational Fit
The candidate demonstrates strong operational fit through extensive experience in 24/7 production support, incident management, RCA, and SRE best practices. Their project descriptions highlight leadership in migrations, cost optimization, and improving system reliability, indicating a proactive and problem-solving mindset. The emphasis on collaboration and technical leadership in their professional summary suggests good soft skills for a senior role.