Background

AOS Ltd is a service provider established from the joint venture between the Government of Rwanda and Korea Telecom. The company provides advanced ICT services including data center services, system development and integrations, e-Government project implementation, and ICT consulting.

To effectively accomplish its business objectives, AOS Ltd is looking for qualified and competent candidates to support its business operations.

Position

Network and Security Systems Engineer

Roles and Responsibilities

Network Implementation and Operations

• Manage, operate, and troubleshoot Layer 2 and Layer 3 internetworking technologies.
• Configure and maintain VLANs, trunking, port channels, STP, routing protocols, and IP addressing.
• Manage TCP/IP network services and ensure proper routing and connectivity across the IDC network.
• Operate and support network devices running Cisco IOS, Cisco NX-OS, JUNOS, or equivalent network operating systems.
• Support the implementation of network architecture changes, upgrades, and expansions.

Firewall and Network Security Operations

• Configure, operate, and troubleshoot firewalls, access-control lists, NAT policies, VPNs, and security zones.
• Implement and maintain network security best practices across the IDC environment.
• Support incident response activities related to network attacks, suspicious traffic, DDoS events, and unauthorized access attempts.
• Perform regular review of firewall rules, access policies, and security configurations.
• Apply basic ethical hacking and security assessment knowledge to identify and reduce network exposure.

Tier-2 and Tier-3 Technical Support

• Provide Tier-2 and Tier-3 network support in a 24×7 hosting and data center environment.
• Troubleshoot complex customer and infrastructure connectivity issues.
• Analyze incidents, identify root causes, and recommend corrective and preventive actions.
• Escalate critical issues appropriately and participate in major incident response when required.
• Prepare technical reports, incident reports, and root cause analysis documentation.

Required Technical Skills and Competencies

• Layer 2 and Layer 3 networking.
• TCP/IP, subnetting, VLANs, routing, switching, and redundancy protocols.
• Cisco IOS, Cisco NX-OS, JUNOS, or equivalent platforms.
• OSPF, BGP, static routing, policy-based routing, and route filtering.
• Firewalls, access-control lists, NAT, VPNs, and security policies.
• Internet peering, ISP connectivity, and data center network operations.
• Quality of Service configuration and monitoring.
• Network monitoring, troubleshooting, packet analysis, and log review.
• Basic network security best practices and ethical hacking concepts.
• Incident management, root cause analysis, and technical reporting.

Qualifications and Experience

• At least a Diploma in Information Technology, Electronics, Telecommunications, Computer Science, or a related technical field.
• A bachelor’s degree in a related field will be an added advantage.

Behavioural Attributes

• Persistence and resilience in handling difficult conversations with clients.
• Integrity and professionalism, especially when handling sensitive information.
• Ability to work independently and as part of a team.

Application Requirements

Interested candidates should submit the required application documents through the online application form.

• Application letter and comprehensive Curriculum Vitae.
• Copy of the biodata page of ID and copies of degree/certificates.
• Names and contact addresses, including telephone numbers and emails, of 3 referees.

Deadline

The deadline for submission of applications is 15 May 2026.

Notification

Please note that due to the high volume of applications received, only shortlisted candidates will be contacted. If you do not hear from us within 14 days, please consider your application unsuccessful.