Lead Consultant - Unix/Linux Administration - Brussels, Belgium

• In the role of RHEL / HP-UX / Solaris Administrator, you will be responsible for the administration, operation, maintenance, and continuous improvement of mission-critical Unix and Linux infrastructure environments. You will manage enterprise Red Hat Enterprise Linux (RHEL), HP-UX, and Solaris platforms supporting business-critical applications, ensuring high availability, performance, security, compliance, and operational excellence.
• You will own day-to-day platform administration, lifecycle management, patching, upgrades, incident resolution, performance tuning, automation initiatives, capacity planning, and disaster recovery readiness across production and non-production environments. You will work closely with application, database, storage, network, cloud, security, and service management teams in an ITIL-driven environment to deliver reliable and resilient infrastructure services.

Basic

• Progressive experience in Unix/Linux Infrastructure Administration.
• Minimum 10+ years of hands-on experience supporting enterprise RHEL, HP-UX, and Solaris environments.
• Experience working in large-scale, mission-critical production environments with 24x7 support models.
• Relevant certifications such as RHCSA/RHCE, Red Hat Certified Architect (RHCA), Oracle Solaris Certification, HP-UX certifications, or equivalent industry certifications are preferred.

Preferred Enterprise Unix/Linux Administration

• Extensive hands-on experience administering RHEL 7/8/9, HP-UX 11i v3, and Solaris 10/11 environments.
• Expertise in OS lifecycle management including installations, upgrades, migrations, patching, hardening, and decommissioning activities.
• Deep understanding of kernel tuning, system internals, performance optimization, and enterprise-scale infrastructure management.
• Experience leading operating system upgrade and transformation initiatives across large server estates.

Infrastructure Operations & Technical Leadership

• Experience serving as Technical Lead or Subject Matter Expert (SME) for Unix/Linux platforms.
• Ability to lead Major Incident calls, Problem Management reviews, and Root Cause Analysis (RCA) discussions.
• Experience mentoring junior administrators and driving technical competency development within teams.
• Strong stakeholder management and customer-facing communication skills.

Storage, Clustering & High Availability

• Strong expertise in LVM, VxVM, ZFS, VxFS, XFS, ext4, UFS, and enterprise storage management.
• Experience administering SAN infrastructure, multipathing solutions, and storage provisioning activities.
• Hands-on experience with high availability and clustering solutions such as Serviceguard, Veritas Cluster Server (VCS), Solaris Cluster, Pacemaker, or equivalent technologies.
• Knowledge of disaster recovery planning, DR testing, and business continuity strategies.

Performance Engineering & Capacity Planning

• Advanced knowledge of system performance analysis and tuning across CPU, memory, storage, and networking layers.
• Experience conducting capacity reviews, infrastructure forecasting, and optimization initiatives.
• Ability to identify performance bottlenecks and implement proactive improvements.

Security, Compliance & Governance

• Strong understanding of security hardening standards and enterprise compliance frameworks.
• Experience supporting audit remediation activities and compliance requirements.
• Expertise in Identity & Access Management integration including LDAP, Active Directory, PAM, SSH, SUDO, and multi-factor authentication solutions.
• Experience implementing CIS benchmarks and vulnerability remediation programs.

Automation & Modernization

• Strong automation experience using Shell, Bash, Korn Shell, Python, Perl, and Ansible.
• Experience designing and implementing infrastructure automation frameworks.
• Exposure to DevOps methodologies, CI/CD pipelines, Infrastructure as Code (IaC), and configuration management practices.
• Experience driving operational efficiencies through automation and continuous improvement initiatives.

Monitoring & Service Management

• Experience with enterprise monitoring platforms and predictive infrastructure monitoring solutions.
• Strong understanding of ITIL-based Incident, Problem, Change, Configuration, and Release Management processes.
• Experience working in SLA/KPI-driven managed services environments.
• Familiarity with ServiceNow and enterprise ITSM tools.

Cloud, Virtualization & Container Platforms

• Experience supporting Linux workloads on AWS, Azure, OCI, or hybrid cloud environments.
• Exposure to VMware, OpenShift, Kubernetes, containers, and cloud-native infrastructure technologies.
• Understanding of infrastructure modernization and cloud migration strategies.

Nice to Have

• Experience with Red Hat Satellite, SUSE Manager, Spacewalk, Oracle Enterprise Manager (OEM), HP Systems Insight Manager, or similar enterprise management platforms.
• Hands-on experience supporting OpenShift, Kubernetes, Docker, and Containerized Linux environments.
• Exposure to Cloud platforms such as AWS, Microsoft Azure, Google Cloud Platform (GCP), or Oracle Cloud Infrastructure (OCI).
• Exposure to Infrastructure as Code (IaC) tools such as Terraform, Ansible Automation Platform, Puppet, or Chef.
• Experience administering Veritas Cluster Server (VCS), Serviceguard, Solaris Cluster, Pacemaker, Corosync, or RHCS.
• Exposure to virtualization platforms including VMware vSphere, KVM, Hyper-V, and Oracle VM.
• Experience performing Unix-to-Linux migrations, datacenter migrations, cloud transformation, or infrastructure modernization projects.
• Understanding of IT Operations Analytics (ITOA), AIOps, and predictive monitoring tools.
• Experience with server build automation, golden image creation, and standardized OS deployment frameworks.
• Knowledge of enterprise network concepts including Load Balancers, DNS, DHCP, Firewalls, Proxy Servers, and TCP/IP troubleshooting.
• Experience participating in audit reviews, compliance assessments, and security certification activities.
• Capability to drive Continuous Service Improvement (CSI) programs and operational excellence initiatives.
• Experience acting as an L3/L4 escalation point for critical incidents and complex infrastructure issues.
• Prior experience in customer-facing roles, solution discussions, technical governance meetings, and service reviews.
• Exposure to AI-driven operations, automation initiatives, and self-healing infrastructure frameworks.

The job entails sitting as well as working at a computer for extended periods of time. The role may require participation in rotational shifts, on-call duty, and incident-response engagement during critical platform events. Should be able to communicate by telephone, email or face to face.

Infosys is a global leader in next-generation digital services and consulting. We enable clients in more than 50 countries to navigate their digital transformation. With over four decades of experience in managing the systems and workings of global enterprises, we expertly steer our clients through their digital journey. We do it by enabling the enterprise with an AI-powered core that helps prioritize the execution of change. We also empower the business with agile digital at scale to deliver unprecedented levels of performance and customer delight. Our always-on learning agenda drives their continuous improvement through building and transferring digital skills, expertise, and ideas from our innovation ecosystem. All aspects of the hiring process and employment at Infosys are based on merit, competence and performance. We are committed to embracing diversity and creating an inclusive environment for all employees. Infosys is proud to be an equal opportunity employer Interest Group Infosys Limited Job Role, ITL Belgium