Jobs in Lisbon, Portugal

About the role

We are looking for an IBM Informix Database Engineer to join a production-focused service center supporting mission‑critical database environments. This role is ideal for a highly skilled L3 specialist with deep expertise in Informix architecture, high availability, performance tuning and automation. You will ensure reliability and continuity across multi‑customer infrastructures, leading major changes, advanced troubleshooting and 24/7 operations.

What you'll bring

• 5–10+ years of experience in production database administration, with strong hands‑on expertise in IBM Informix;
• Solid background in Informix architecture, high availability, migrations, performance tuning and large‑scale database operations;
• Experience working in multi‑customer or service‑center environments (MSP/outsourcing) is highly valued;
• Advanced knowledge of Informix engine components (dbspaces, chunks, logs, onstat/onmode/oncheck tooling, sysmaster/sysadmin);
• Strong expertise in Informix HA/DR technologies (HDR, RSS, SDS, Enterprise Replication, Connection Manager);
• Proven skills in performance tuning: query plan analysis, SQL optimization, indexing, fragmentation and statistics management;
• Solid understanding of backup/restore mechanisms (ON‑Bar, ontape, logical logs, dbexport/dbimport) and complex recovery scenarios;
• Good knowledge of Linux/AIX environments, OS‑level troubleshooting, virtualization (VMware) and storage architectures (SAN/NAS);
• Experience with scripting and automation (PowerShell, Python, Bash, Ansible) and contribution to CI/CD pipelines;
• Strong analytical mindset, ability to stay calm under pressure and perform effectively in on‑call situations;
• Excellent communication skills and ability to collaborate with cross‑functional technical teams;
• Organized, autonomous, customer‑oriented and comfortable working in demanding, SLA‑driven environments;