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Unix Systems Engineer

Lisbon, Lisbon, pt💼 Full-time🗓 2026-07-28 → 2026-09-25

Core

Administration, maintenance, and advanced troubleshooting of critical Unix/Linux environments (AIX, RHEL, Debian) ensuring stability, security, and continuous availability across on-premises and cloud-adjacent infrastructures.

Role type

Senior Unix Systems Engineer (L3)

Builds

High-availability systems, clustered services, and enterprise workloads

Domain

Enterprise IT Infrastructure / Unix Systems Administration

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Unix/Linux internals, high-availability clustering, system automation, security hardening, performance diagnostics, backup and disaster recovery, system migration

Preferred skills

Cloud platforms, virtualization, monitoring tools, relevant certifications

Technologies

AIX, RHEL, Debian, HP Serviceguard, Bull ARF, Pacemaker/Corosync, Bash, ksh, Python, Ansible, LDAP, AD, Kerberos, SSSD, VMware, AWS, Azure, GCP, Icinga, ScienceLogic, syslog, SNMP

Responsibilities

Administer and troubleshoot complex Unix/Linux environments; Install, configure, patch, and upgrade systems; Operate and support high-availability clusters; Perform advanced performance and system diagnostics; Implement security hardening and compliance; Integrate systems with enterprise authentication; Execute and validate backup, restore, DR, and failover procedures; Automate operational tasks; Monitor system health and capacity; Provide L3 support and resolve complex incidents; Plan and execute system migrations and lifecycle upgrades

Seniority

Senior, hands-on IC

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