Paulo César Janoti Júnior

Senior Linux System Administrator with 10+ years of hands-on experience managing, automating, and scaling production infrastructure across telecom, government, and enterprise environments. I specialize in keeping Linux systems running reliably at scale — from bare-metal Proxmox clusters to cloud-hybrid deployments. My day-to-day spans system administration, infrastructure automation, monitoring, and security hardening across Debian, Ubuntu, and RHEL-based environments. Core expertise: → Linux Systems Administration (Debian, Ubuntu, RHEL/CentOS) — patching, hardening, performance tuning, lifecycle management → Infrastructure Automation — Ansible playbooks & roles, Terraform IaC, Python/Bash scripting → Virtualization & Containers — Proxmox VE, LXC/LXD, Docker, KVM → Monitoring & Observability — Zabbix, Grafana, Prometheus, ELK Stack → Networking — VLANs, BGP, bonding, MTU tuning, SDN gateway operations → Security — vulnerability management, CVE remediation, Linux hardening, compliance → Cloud — AWS (EC2, Lambda, CloudWatch, EKS), hybrid infrastructure Currently at WiLine Networks, where I manage Proxmox-based SDN gateway infrastructure supporting telecom connectivity across the US, automate deployments with Ansible and Terraform, and build monitoring/alerting pipelines with Zabbix and Grafana. Open to: Linux System Administrator, Infrastructure Engineer, Platform Engineer, and Site Reliability roles (remote).