Network Security Engineer (Firewall & Wazuh)

Voigue is an Australian BPO company with its operational hub in Sri Lanka, specializing in value-added Human Resource Outsourcing (HRO) and business support solutions. The company helps organizations streamline operations, reduce costs, and improve productivity by providing skilled professionals and efficient processes. Voigue’s services include virtual assistance, accounting and bookkeeping, digital marketing, IT and software development, and back-office operations. With strong global connections across multiple industries, Voigue delivers tailored BPO and operational support to help businesses scale efficiently and grow.

💼 About the Role

As a Network Security Engineer (Firewall & Wazuh), you'll play a key role in managing enterprise firewall infrastructure, administering and optimizing the Wazuh SIEM platform, and strengthening the client's overall security posture. You'll work closely with Australian-based security and network teams to investigate threats, improve detection capabilities, and maintain secure, compliant environments.

🔑 Key Responsibilities

• Manage and maintain enterprise firewall infrastructure, including rule creation, policy reviews, firmware upgrades, and change management.
• Deploy, configure, administer, and optimize the Wazuh platform across servers and endpoints.
• Develop and fine-tune detection rules, decoders, and alerts to improve security monitoring and reduce false positives.
• Configure and maintain VPNs, site-to-site tunnels, and network segmentation.
• Investigate security alerts, perform root cause analysis, and drive incidents through to resolution.
• Harden and maintain Linux servers supporting security infrastructure.

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• Maintain security documentation, audit records, and compliance reporting.
• Collaborate closely with Australian security and network engineering teams across multiple time zones.

✅ What We're Looking For

• Hands-on experience managing enterprise firewalls such as Fortinet, pfSense, Palo Alto, Sophos, or similar platforms.
• Experience deploying and administering Wazuh or another SIEM/HIDS solution in a production environment.
• Strong Linux systems administration skills.
• Solid understanding of networking concepts including routing, VLANs, VPNs, and NAT.
• Experience creating and tuning security detection rules and alerts.
• Scripting experience using Bash, Python, or similar languages for automation.
• Excellent written and verbal English communication skills.
• Ability to work directly with Australian technical stakeholders.

⭐ Nice to Have

• Industry certifications such as NSE, Security+, CEH, or vendor-specific firewall certifications.
• Experience with AWS or Azure security services.
• Knowledge of vulnerability management tools such as OpenVAS or Nessus.
• Previous experience working within an MSP, MSSP, or telecommunications environment.

🎯 Why Join Through Voigue?

✨ Work with an established Australian client

🏡 Fully remote opportunity based in Sri Lanka

🌏 Exposure to international projects and enterprise environments

📈 Career growth within cybersecurity and infrastructure

🤝 Supportive and collaborative team culture