Senior System / Network Administrator at Proten International

Proten International is an award-winning and leading international Human Resource and Management Consulting firm that provides a range of Advisory and Transformation solutions. Our focus is to align every organisation’s activities relating to People, Process and Technology closely with its business strategy and vision. Founded in 2011 in the United Kingdom, we have since expanded across Europe and Africa, serving clients across the public and private sectors and various industries including Banking, Oil and Gas, Insurance, Information Technology, Real Estate, Energy, FMCG, Manufacturing and many more. In 2015, we launched our Africa office in Lagos, Nigeria and have since provided a range of tailored solutions to various organisations. Our bespoke and innovative solutions cut across: Learning and Development, Recruitment and Talent Acquisition, Outsourcing / Managed Staffing, Enterprise Transformation, HR Advisory, HR Technology Get in touch with us! People | Process | Technology.

We are recruiting to fill the position below:

Job Title: Senior System / Network Administrator

Location: Apapa, Lagos
Employment Type: Full-time

Job Summary

• Our client is seeking a highly technical and infrastructure-focused toS enior System / Network Administrator bridge the gap between their complex maritime logistics and mission-critical IT operations.
• Operating fully onsite from their Tin Can Island, Lagos office, you will be responsible for supervising the entire network architecture, managing Cisco infrastructure, optimizing server virtualization, and overseeing critical technical vendors.
• The ideal candidate will transform raw infrastructure metrics and security requirements into robust, high-availability technical strategies that eliminate system downtime, protect terminal data assets, and drive the 24/7 operational efficiency of West Africa’s largest maritime terminal.

Key Responsibilities

• Proactive monitoring of the entire network infrastructure to ensure maximum levels of availability, performance, and security.
• Advanced configuration, management, and troubleshooting of Cisco switches, routers, and network appliances.
• Coordination of external IT, telecom, and consulting service providers, supervising compliance with Service Level Agreements (SLAs) and delivery quality.
• Management and maintenance of server infrastructure (virtualization, storage, backup, and enterprise operating systems).
• Implementation and monitoring of cybersecurity policies, firewall management, and Disaster Recovery / Business Continuity plans.
• Planning and supervising technology upgrade, migration, and infrastructure expansion projects.

Technical Requirements

• Minimum of 10 years of proven experience in similar roles (System/Network Administrator or IT Infrastructure Specialist).
• In-depth expertise in network architectures, routing protocols, VLANs, and advanced management of theCisco IOSoperating system.
• Cisco CCNA / CCNP.
• Strong experience with Windows Server and/or Linux Enterprise environments, and virtualization platforms (VMware vSphere or Microsoft Hyper-V).
• Knowledge of storage architectures (SAN/NAS) and enterprise backup solutions (e.g., Veeam).

Core Competencies:

• Ability to interface authoritatively and with technical precision with external suppliers.
• Aptitude for process control and managing workflows, including complex ones.
• Strong analytical skills and timely resolution of critical incidents (troubleshooting).
• Ability to propose infrastructure improvements aimed at corporate efficiency and scalability.

Application Closing Date
20th July, 2026. 

How to Apply
Interested and qualified candidates should:
Click here to apply online