Senior AIX System Administrator

About the role

We are seeking a Senior AIX System Administrator to join our international client support team. You will be responsible for the operation, maintenance, and optimisation of critical IBM AIX environments, ensuring high availability and performance for mission‑critical services.

Key responsibilities

• Administer and support IBM AIX systems across enterprise infrastructures.
• Monitor platform health, detect anomalies, and implement corrective actions promptly.
• Perform routine maintenance, system upgrades, and advanced troubleshooting.
• Ensure platform security, performance tuning, and compliance with service level agreements.
• Collaborate with distributed teams to manage and improve critical infrastructure.
• Contribute to technical documentation and continuous improvement of operational processes.

Required profile

• Minimum 5 years of hands‑on experience in IBM AIX system administration.
• Strong background working in corporate, mission‑critical environments.
• Proven ability to work autonomously with a high sense of responsibility.
• Excellent analytical, problem‑solving, and organisational skills.
• Effective communication and teamwork with international, distributed teams.

Required skills

• IBM AIX
• Unix
• Linux

What we offer

• Hybrid work model – up to three days per week on‑site at our Picoas office in Lisbon.