Sunil K.

Senior Linux & Cloud Infrastructure Engineer | DevOps | 5+ Years | 100% Job Success I keep production systems up, fast, and secure — so you don't have to think about infrastructure. Currently managing 60+ Linux servers across AWS, Azure, and GCP for enterprise clients, including high-traffic WordPress fleets, educational LMS platforms, and SaaS applications. ━━ WHAT I DELIVER ━━ → WordPress at Scale: GridPane, OpenLiteSpeed, LiteSpeed Enterprise, Cloudflare WAF, CDN optimization — page loads cut from 4s to <1s → Cloud Infrastructure: AWS (EC2, S3, Route 53, IAM), Azure, GCP — architecture, migration, cost optimization → DevOps & CI/CD: Jenkins, GitHub Actions — automated build, test, and deployment pipelines → Infrastructure as Code: Ansible playbooks for provisioning, config management, and compliance automation (DISA STIG, OpenSCAP) → Containers: Docker, Portainer, Docker Compose — multi-container app deployment → Monitoring & Observability: Zabbix, Grafana, Prometheus, Loki — full-stack setup with alerting pipelines across 40+ production servers → Networking & VPN: Tailscale mesh VPN, Cloudflare Tunnels, Nginx/Caddy reverse proxy, pfSense, DNS management at scale → Security & Compliance: ModSecurity, OWASP hardening, DISA STIG, Wazuh SIEM, zero breaches in 5 years → Automation: Ansible, Bash, PowerShell, n8n workflows — eliminated 20+ manual hours/week → Microsoft 365 & Entra ID: full tenant management, MFA, Conditional Access, bulk provisioning → Mail Infrastructure: Postal Mail Server, SendGrid, DKIM/SPF/DMARC from scratch → Virtualization & Homelab: Proxmox, VMware ESXi, PXE boot + autoinstall for zero-touch Ubuntu provisioning, LVM storage, VM lifecycle management ━━ PROVEN RESULTS ━━ ✓ Built Jenkins CI/CD pipeline with Ansible for DISA STIG-compliant Ubuntu server fleet ✓ Deployed PXE autoinstall infrastructure for zero-touch provisioning of 10+ VMs ✓ Migrated 50+ WordPress sites with 100% data integrity and zero downtime ✓ Reduced server response time 40% through OLS tuning + CDN integration ✓ Set up full observability stack (Zabbix + Grafana + Loki) across 40+ production servers ✓ Implemented Tailscale mesh VPN across Proxmox homelab and remote VPS nodes ✓ Configured multi-layered security stack reducing spam/injection by 95% ✓ Automated M365 student provisioning for 3 educational institutions (500+ accounts) ✓ Reduced manual ops overhead 60% through n8n + Bash automation workflows ✓ Deployed automated backup systems saving clients 15+ hours/week ━━ TECHNOLOGY STACK ━━ Cloud: AWS (EC2, S3, IAM, Route 53, CloudWatch) | Azure | GCP On-Prem: Proxmox | VMware ESXi | Hyper-V | Bare Metal (OVH, Contabo, Hetzner) OS: Ubuntu 20/22/24 LTS | Rocky Linux | CentOS | RHEL | Debian Web: Apache | Nginx | LiteSpeed | OpenLiteSpeed Panels: GridPane | cPanel/WHM | Plesk | CyberPanel | aaPanel DB: MySQL | MariaDB | PostgreSQL DevOps: Ansible | Jenkins | GitHub Actions | Bash | PowerShell | n8n Containers: Docker | Portainer | Docker Compose Monitoring: Zabbix | Grafana | Prometheus | Loki | Uptime Kuma Security: Wazuh SIEM | OpenSCAP | ModSecurity | Cloudflare WAF | CSF | Sophos | Fortinet DNS/Mail: Cloudflare | Route 53 | Postal Mail Server | DKIM/SPF/DMARC RMM: Atera | ConnectWise | Datto | N-able I provide detailed documentation for every implementation and respond within 1 minute during business hours Send me your requirements — I'll respond with a tailored plan within 24 hours.