Senior Network Engineer
Job Overview: We are seeking a skilled and detail-oriented Network Engineer to manage and maintain the network infrastructure. The ideal candidate will oversee network configurations, perform regular maintenance, handle security incidents, and ensure optimal performance across all network devices.
Key Responsibilities:
- Change Management and Configuration:
Execute and manage change configurations for network devices and firewalls, ensuring compliance with organization policies and obtaining necessary approvals.
Document and track all changes made to the network configuration, ensuring traceability and adherence to change management procedures.
Test and validate changes in a controlled environment before deployment to minimize risks and disruptions.
- Software and Firmware Updates:
Plan and execute regular software and firmware updates for network devices, including routers, switches, and firewalls, to ensure optimal performance and security.
Coordinate with vendors and internal teams to schedule updates and manage any potential downtime or service interruptions.
Maintain a record of all updates, including version details, deployment dates, and any issues encountered.
- Security Incident Response:
Respond promptly to security vulnerabilities and incidents affecting the network, coordinating with IT security teams and other stakeholders, as necessary.
Implement and manage security patches and mitigations in response to identified vulnerabilities.
Conduct root cause analyses and develop remediation plans to address and prevent future security incidents.
- Network Inventory Management:
Maintain and manage network inventory, including network devices, Uninterruptible Power Supplies (UPS), and related hardware.
Ensure proper documentation and tracking of all network assets, including installation dates, locations, and maintenance history.
Conduct regular inventory audits to verify the accuracy and condition of network equipment.
Oversee and manage the allocation and administration of IP addresses for the organization, ensuring efficient utilization and adherence to IP address policies.
Maintain an accurate IP address management system, including documentation of IP address assignments and subnet configurations.
- Incident Support and Troubleshooting:
Provide incident support for network issues, including external connectivity problems with other agencies.
Perform diagnostics and troubleshooting to identify and resolve network connectivity issues, coordinating with external partners and service providers as needed.
Document and report on incident resolutions, ensuring timely follow-up and stakeholder communication.
Perform daily health checks of network systems and infrastructure to ensure operational stability and performance.
Monitor network performance metrics and alerts to proactively identify and address potential issues before they impact services.
Report on network health and any anomalies or trends observed during daily checks.
- Facility Power Management:
Support building facility power shutdown and recovery exercises, including coordinating with facility management and ensuring minimal disruption to network services.
Develop and maintain procedures for power recovery and continuity planning, including testing and validation of backup power systems.
- Documentation and Standard Operating Procedures (SOPs):
Develop, maintain, and update documentation and Standard Operating Procedures (SOPs) necessary for network support and operations, including network diagrams, configuration details, and operational workflows.
Ensure that all documentation is accurate, comprehensive, and accessible to relevant personnel.
- Network System Account Review:
Regularly review the state of network system accounts, including active, inactive, and disabled accounts. Assess privilege levels to ensure they align with current roles and responsibilities.
Monitor and analyse login attempts to detect unauthorized access or suspicious activities. Investigate any unauthorized login attempts and take corrective actions as needed.
Ensure that account access levels adhere to the principle of least privilege and update account permissions based on changes in user roles and responsibilities.
Ensure that all network and security devices are configured to log events to the organisation central log repository, including system logs, security logs, and performance metrics.
Monitor log data for anomalies and security incidents, and work with relevant teams to investigate and address any issues identified.
- Configuration Backup and Disaster Recovery:
Ensure regular and reliable backups of network device configurations, including routers, switches, and firewalls. Verify backup integrity and maintain backup copies in secure, off-site locations.
Perform disaster recovery swing procedures yearly to ensure they function correctly and meet recovery time objectives and recovery point objectives
- Configuration Review and Baseline Assessment
Conduct regular reviews of network configurations to ensure they comply with organizational guidelines and standards. This includes evaluating and updating firewall rules, router settings, and switch configurations.
Firewall Rule Review: Perform a comprehensive review of firewall rules annually to ensure they meet current security requirements and organizational policies.
Baseline Configuration Assessment: Establish and review configuration baselines for routers, switches and security products such as firewall/IPS on a periodic basis to ensure consistency with best practices and to identify any deviations or areas for improvement.
Manage network-related projects, including upgrades, expansions, and new deployments, ensuring alignment with project goals, budgets, and timelines.
Coordinate cross-functional teams and resources to achieve project objectives and address any issues that arise.
Required Skills & Qualifications:
- Certifications: CCNP (Cisco Certified Network Professional) or equivalent network certification required
- Experience:
- At least 5 years of experience in network engineering or administration.
- Proven experience with network troubleshooting, configuration management, and incident response.
- Experience with managing network devices, including routers, switches, IDS/IPS and firewalls.
- Working experience with network management and monitoring tools like SolarWinds and eG.
- Familiarity with security protocols, vulnerability management, and security patching.
- Technical Skills:
- Strong knowledge of TCP/IP, DNS, DHCP, and other network protocols.
- Able to perform assessment and implement firewall changes on firewall product like Palo Alto, Checkpoint, Cisco ASA.
- Strong troubleshooting and diagnostic skills for complex network issues.
- Solid understanding of change management and version control procedures.
- Knowledge of IP address management and subnetting.
- Soft Skills:
- Able to communication concisely with all stakeholders.
- A team player who will collaborate with others effectively to plan and execute changes or project tasks.
- Strong attention to detail and organizational skills.
- Able to manage time effectively and prioritize multi tasks based on business criticality.
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