Lead Consultant – Unix/Linux Administration

About the role

Infosys is seeking a Lead Consultant to own the administration, operation and continuous improvement of mission‑critical Unix and Linux platforms in Brussels. The role focuses on Red Hat Enterprise Linux, HP‑UX and Solaris environments that support core business applications.

Key responsibilities

• Perform day‑to‑day platform administration, including installation, patching, upgrades and decommissioning of RHEL 7/8/9, HP‑UX 11i v3 and Solaris 10/11.
• Drive performance tuning, kernel optimization and capacity planning for production and non‑production estates.
• Lead incident resolution, major incident calls, problem management and root‑cause analysis in an ITIL‑driven environment.
• Coordinate automation initiatives and disaster‑recovery readiness across the infrastructure.
• Collaborate with application, database, storage, network, cloud and security teams to ensure high availability, security and compliance.
• Mentor junior administrators and act as a technical subject‑matter expert.

Required profile

• Minimum 10 years of hands‑on experience administering enterprise RHEL, HP‑UX and Solaris platforms.
• Proven experience in large‑scale, 24 × 7 production environments.
• Relevant certifications such as RHCSA/RHCE, RHCA, Oracle Solaris or HP‑UX preferred.
• Experience acting as a technical lead or SME for Unix/Linux systems.

Required skills

• RHEL 7/8/9 administration
• HP‑UX 11i v3 administration
• Solaris 10/11 administration
• OS lifecycle management (install, upgrade, migration, patching, hardening)
• Kernel tuning and performance optimization
• Automation/scripting for infrastructure tasks
• Capacity planning and disaster‑recovery readiness
• ITIL process knowledge