Unix Systems Engineer

We are seeking a highly skilled and experienced Linux/Unix System Administrator to join our IT team. The ideal candidate will be responsible for the administration configuration and maintenance of our Unix-based systems. This role requires deep technical knowledge of Unix operating systems as well as strong problem-solving and communication skills.

The role requires hands-on expertise with enterprise Unix/Linux platforms specifically IBM AIX Red Hat Enterprise Linux (RHEL) and Debian including production operations troubleshooting patching automation security hardening and high-availability clustering.

Act as a Level 3 technical reference for Unix/Linux infrastructure including AIX/RHEL/Debian internals storage/filesystems networking authentication backup/restore performance tuning and cluster technologies such as HP Serviceguard Bull ARF Pacemaker and Corosync.

Responsibilities:

• Administer and support AIX RHEL and Debian systems (installation configuration patching upgrades)
• Manage high availability environments (HP Serviceguard Pacemaker/Corosync Bull ARF)
• Perform advanced troubleshooting and performance analysis (CPU memory I/O network kernel applications)
• Implement and maintain security and hardening standards (SSH sudo PAM firewalls SELinux auditing access control)
• Support backup and disaster recovery (mksysb NIM restores DR testing)
• Automate tasks using Bash/KSH/Python and Ansible
• Participate in on-call rotation and DR/failover validation
• Collaborate with cross-functional teams (DBA application storage network security)
• Maintain technical documentation and runbooks

Qualifications :

• 510 years of experience in Unix/Linux production environments
• Strong expertise in:
  • IBM AIX (LPAR VIOS NIM LVM JFS2)
  • RHEL and Debian
• Solid knowledge of:
  • HA clustering storage (SAN/NAS multipath) networking (TCP/IP DNS VLANs)
  • Advanced system troubleshooting
• Scripting and automation experience (Ansible preferred)
• Strong understanding of system security and compliance
• Fluent in Portuguese and English

Nice to Have

• VMware
• Cloud platforms (AWS Azure GCP)
• Monitoring tools (Icinga ScienceLogic)
• Containers (Docker Kubernetes)

Additional Information :

Remote Work :

No

Employment Type :

Full-time