Building
infrastructure
that scales.

System Administrator and former Cybersecurity Engineer with expertise in Linux-based technologies, networking, and security.

Robert Melcher

Career
Journey.

HPC System Administrator

Forvia

Led end-to-end deployment of HPC cluster on Dell infrastructure with PBS scheduling • Cross-team coordination with network and firewall teams for infrastructure provisioning

Founder

Dolphost

Built secure WordPress hosting platform • Managed VPS infrastructure and implemented WHMCS/cPanel solutions

Cyber Security Engineer

Atos IT Solutions

Conducted vulnerability assessments with NESSUS • Implemented firewall policies across Cisco, Fortinet, Palo Alto, and Juniper platforms

System Administrator

Netex Romania

Migrated Puppet infrastructure to Kubernetes • Managed BAREOS backups for 200+ servers • Configured IPsec site-to-site VPN connections

Stack &
Skills.

Linux
Ubuntu
Debian
Windows Server
Proxmox
Docker
Kubernetes
XEN
Cisco
pfSense
Fortinet
Palo Alto
StrongSwan
VLAN
CyberArk
Nessus
Ansible
Terraform
Puppet
SALT
Bash
Git
Flux
Rancher
AWS
Oracle Cloud
Cloudflare
InfiniBand
PBS Scheduler
ManageIQ
Talos Linux
Cilium CNI
Portainer
Bareos
Asterisk
Apache
Nginx
MySQL
WordPress
cPanel

Built to
Last.

Linux Infrastructure

From bare metal to containers, I optimize and secure Linux systems at scale.

  • System hardening & security audits
  • Performance tuning & optimization
  • Docker & Kubernetes deployment
  • Backup & disaster recovery

Network Security

Secure your network with proper firewall policies, VPNs, and vulnerability assessments.

  • Firewall architecture & policies
  • Site-to-site VPN configuration
  • Vulnerability scanning & remediation
  • Network segmentation design

Infrastructure Automation

Transform manual processes into reliable, repeatable Infrastructure as Code.

  • Ansible & Terraform workflows
  • CI/CD pipeline implementation
  • Configuration management at scale
  • GitOps & Homelab as Code
9+ Years
Experience
400+ Nodes
Managed
CCNA
Certified
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