Linux Systems Administrator at Vennote Technologies Limited

Vennote Technologies Limited is a well-established ICT company with experience spanning over two decades in enterprise solutions using best of breed products in very large IT deployments around the world. Vennote Technologies Limited has certified Skilled Technical resources delivering world class implementation and support services through the use of best practices.

We are recruiting to fill the position below:

Job Title: Linux Systems Administrator

Location: Lagos
Job Type: Full-time

About the job

• Vennote Technologies is seeking a highly skilled Linux Systems Administrator to join our infrastructure team.
• You will be responsible for the end-to-end management of our Unix and Linux environments, ensuring high availability, security, and performance.
• This role requires a technical expert who can handle everything from routine user management to complex cluster troubleshooting and hardware refreshes.

Key Responsibilities
System Administration & Configuration:

• Multi-Platform Support: Administer, install, and configure Red Hat Linux, Solaris, and Oracle Linux environments.
• Virtualization: Manage and optimize server performance using modern virtualization technologies.
• Lifecycle Management: Lead Technology Refresh projects within the Unix/Linux domain to ensure infrastructure remains modern and supported.
• Maintenance: Perform OS management, including patch updates, kernel fine-tuning, and access control.

Operations & Monitoring:

• Account Management: Handle the full lifecycle of user accounts (creation, deletion, and modification) and manage group policies.
• Performance Monitoring: Proactively monitor server concurrent logins, processor utilization, network traffic, and disk space for the Portal environment.
• Data Protection: Execute regular backups in strict accordance with company policies and disaster recovery procedures.

Troubleshooting & Support:

• Clustering: Apply strong knowledge of clustering technologies to maintain high availability and resolve complex failover issues.
• Vendor Management: Collaborate with principal vendors to conduct Root Cause Analysis (RCA) and implement permanent fixes for critical issues.
• Remote Assistance: Provide expert remote support for OS installation and configuration as needed.

Security & Compliance:

• Hardening: Partner with the security team to apply patches, implement security policies, and perform system hardening.
• Investigations: Assist in security investigations and audit compliance activities.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Computer Engineering, or a related technical field.
• Minimum 4–6 years of hands-on experience in a Unix/Linux Systems Administrator role.
• Certification in Red Hat: RHCSA or RHCE is essential for the RHEL component.
• Oracle/Solaris and VMware certifications is a plus
• Governance: ITIL v4 Foundation certification (highly valued for alignment with Vennote’s service delivery frameworks).

Technical Requirements:

• Scripting: Proficiency in Bash, Python, or Perl for task automation and system monitoring.
• Security & Hardening: Knowledge of SELinux, IPTables/Firewalld, and implementing CIS (Center for Internet Security) benchmarks for OS hardening.
• Patch Management: Experience using tools like Red Hat Satellite or Oracle Enterprise Manager for automated patching.
• Operating Systems: Expert-level knowledge of RHEL, Solaris, and Oracle Linux.
• Clustering: Proven experience in managing and troubleshooting clustered environments.
• Virtualization: Hands-on experience with enterprise virtualization platforms.
• Security: Solid understanding of OS-level security best practices and hardening techniques.

Preferred Skills:

• Strong analytical and problem-solving mindset.
• Ability to work under pressure and manage high-priority incidents.
• Excellent communication skills for vendor coordination and team collaboration.

Application Closing Date
Not Specified.

How to Apply
Interested and qualified candidates should send their CV to: dave.nwokedi@vennote.com using "Linux Systems Administrator” as the subject of the email.

Note: Only Qualified Candidates will be contacted.