Linux & Proxmox Systems Engineer - Onsite Sugar Land

Applied Optoelectronics, Inc.; Sugar Land (TX); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Health benefits

401(k) match

PTO

Relocation package

Job summary

Applied Optoelectronics, Inc. (AOI) is seeking a hands-on Linux & Proxmox Systems Administrator to manage, secure, and improve our Linux server and virtualized infrastructure supporting IT operations at our Sugar Land, Texas facility.

You will oversee Proxmox VE environments, VMs/containers, storage, backups, monitoring, automation, and related infrastructure to ensure availability and performance. The ideal candidate combines solid Linux fundamentals with Proxmox experience, scripting skills,

Qualifications

• Bachelor's degree or equivalent professional experience.
• 3+ years of professional Linux systems administration experience, including Proxmox VE.
• Experience administering Proxmox VE clusters with HA, backup/restore, and storage integration (Ceph, ZFS, NFS, or iSCSI).
• Experience managing VMs and LXC containers with migration, snapshots, and performance tuning.
• Strong knowledge of Linux OS, kernel tuning, boot processes, and package management.
• Proficiency in Bash and at least one other scripting language (Python, Perl, or Ruby).
• Solid understanding of networking (TCP/IP, DNS, DHCP, VLANs, firewalls, load balancing).
• Knowledge of system security best practices (SELinux, AppArmor, iptables/firewalld).
• Familiarity with monitoring/observability tools (Zabbix, Nagios, Prometheus, Grafana).
• Experience with backup/recovery tools (Veeam, Proxmox Backup Server, rsync).
• Strong analytical, troubleshooting, and documentation skills.
• Excellent communication and ability to work in a team and independently.
• Willingness to participate in on-call rotation for incidents.
• Preferred: Docker/Kubernetes, Ansible, Terraform, cloud platforms, and related certifications.

Responsibilities

• Install, configure, maintain, and troubleshoot Linux servers across production and development environments.
• Deploy, configure, and manage Proxmox VE clusters (nodes, quorum, HA, VMs, and LXC).
• Create, migrate, snapshot, backup, and restore VMs/containers with monitoring for performance.
• Manage storage technologies integrated with Proxmox VE (Ceph, ZFS, NFS, iSCSI).
• Maintain and upgrade Proxmox VE clusters and supporting infrastructure.
• Monitor system health, performance, availability, and security; diagnose issues across layers.
• Implement security best practices including hardening, firewall config, updates, patching.
• Develop automation with Bash, Python, Ansible, etc. to streamline tasks.
• Plan, implement, test backup and disaster recovery processes.
• Document configurations, architecture, SOPs, and troubleshooting steps.
• Collaborate with development, network, security, and IT teams for projects.
• Provide advanced tech support for Linux systems and virtualization, including onboarding and incident response.
• Preferred: containerization (Docker/Kubernetes), IaC (Terraform), CI/CD pipelines.

Skills

Proxmox VE

Linux administration

Bash scripting

Python scripting

Networking basics

Security best practices

Monitoring tools

Backup/DR tools

On-call readiness

Education

Bachelor's degree in CS/IT or related field

Tools

Proxmox VE

Ceph

ZFS

NFS

iSCSI

Veeam

rsync

Proxmox Backup Server

Grafana

Prometheus

Nagios

Job description

Applied Optoelectronics, Inc. (AOI) is seeking a hands-on Linux & Proxmox Systems Administrator to manage, secure, and improve our Linux server and virtualized infrastructure supporting IT operations at our Sugar Land, Texas facility.

You will oversee Proxmox VE environments, VMs/containers, storage, backups, monitoring, automation, and related infrastructure to ensure availability and performance. The ideal candidate combines solid Linux fundamentals with Proxmox experience, scripting skills,