Robert Melcher
System Administrator and former Cybersecurity Engineer with expertise in Linux-based technologies, networking, and security. I specialize in server management, virtualization solutions, and network implementation with a focus on maintaining secure and efficient IT infrastructures.
About the alias
MElcher + RObert + X
Previously mer0x39 (0x39 = 57 = July 5th birthday)
Work Experience
HPC System Administrator
Forvia • 2022 – Present
- Maintained Windows and Linux servers ensuring system stability and performance
- Integrated ActiveDirectory and SALT minions on Linux servers
- Managed virtual servers with ManageIQ and network infrastructure with VitalQIP
- Installed and configured PBS (Portable Batch System) on HPC server for effective job scheduling and resource allocation
Founder
Dolphost • 2022 – 2024
- Developed secure WordPress websites with emphasis on security best practices
- Provided maintenance and sales of VPS and web hosting services
- Managed domain registrations and transfers
- Implemented and configured hosting management solutions (WHMCS, cPanel)
Cyber Security Engineer
Atos IT Solutions • 2020 – 2022
- Conducted risk and vulnerability assessments using NESSUS, providing detailed reports to senior management
- Implemented firewall rules on next-generation firewalls (CISCO, Fortinet, Palo Alto, Juniper)
- Configured and managed proxy rules on McAfee and SQUID systems
- Monitored data access and regulated file use using CyberArk
- Migrated and created policy rules for Windows 10 end users using Forescout
System Administrator
Netex Romania • 2018 – 2020
- Managed backup processes using BAREOS, ensuring data integrity and redundancy
- Performed patching and troubleshooting on NetexOS (Debian-based) with Puppet automation
- Installed XEN hypervisors and integrated Docker for development team
- Migrated Puppet from bare metal infrastructure to Kubernetes (K8s) cluster
- Managed VOIP system based on Asterisk and CISCO phones
- Configured networks for routers using StrongSwan for IPsec site-to-site connections
- Maintained server room infrastructure: installed rack-mounted servers, managed network cabling, replaced UPS batteries, and performed hardware maintenance
Education
Computer Science
West University of Timișoara
2016–2018
Certifications
Cisco Certified Network Associate (CCNA)
Cisco
2019–2020
#NJXWKRFD7D1EQ7C0
Homelab Projects
- Built and maintained Dell PowerEdge R720 server
- Proxmox virtualization running Linux and Windows VMs
- Network security with VLANs, WAF, and pfSense firewall
- Deployed Docker environments managed with Portainer
- Implemented K8S Cluster with FluxCD and Talos