The company is seeking a highly skilled Senior Security Engineer with strong expertise in network security, firewall technologies, NAC solutions, and OT/ICS environments. The ideal candidate will design, implement, and operate secure network architectures across IT and OT infrastructures, ensuring high availability, resilience, and compliance with security best practices.
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Location: Abu Dhabi, Abu Dhabi Emirate, United Arab Emirates
Work Conditions: On-site, Full-time
Responsibilities:
- Act as an on-site cyber security expert to design, implement, and manage enterprise and industrial network security architectures.
- Deploy and support FortiGate Firewalls with HA, VDOMs, IPS, AV, SSL inspection, and VPNs.
- Configure, manage, and troubleshoot Cisco Firepower Threat Defense (FTD) using FMC.
- Implement and maintain FortiNAC for network access control, device profiling, onboarding, and segmentation.
- Perform advanced troubleshooting across routing, switching, and security layers.
- Support LAN/WAN networks using Cisco and multi-vendor platforms.
- Implement VLANs, trunking, STP, HSRP/VRRP, and multicast where required.
- Support high availability and redundancy designs.
- Secure Operational Technology (OT) environments including SCADA, PLCs, DCS, and industrial networks.
- Design IT–OT network segmentation using firewalls, zones, and DMZ architectures.
- Apply security controls aligned with IEC 62443, NIST, and ISA standards.
- Understand industrial protocols such as Modbus, DNP3, OPC, Profinet, and EtherNet/IP.
- Support risk assessments and mitigation strategies for critical infrastructure.
- Monitor, analyze, and respond to security incidents and network outages.
- Conduct firewall rule reviews, audits, and optimization.
- Participate in root cause analysis (RCA) and post-incident reporting.
- Provide Tier-3 escalation support and mentorship to junior engineers.
- Create and maintain network diagrams, security standards, and SOPs.
- Support compliance requirements and security audits.
- Collaborate with IT, OT, SOC, and application teams.
Qualifications & Skills:
- Bachelor’s degree in computer science, information technology, or a related field.
- Strong hands-on experience with FortiGate Firewalls, FortiNAC, and Cisco FTD & FMC.
- Excellent knowledge of Routing & Switching fundamentals, TCP/IP, DNS, DHCP, NAT, and VPN technologies (IPsec, SSL).
- Certifications preferred:
- Fortinet: NSE 4 / NSE 5 / NSE 7 (or FCP / FCSS)
- Cisco: CCNP Security / CCIE (Security or Enterprise)
- OT Security: GICSP, IEC 62443 certification (preferred)
- ITIL Foundation (nice to have)
- Solid understanding of network security principles and zero-trust concepts.
- Experience working in OT/industrial environments is mandatory or highly preferred.
- Strong analytical and troubleshooting skills.
- Ability to work in high-pressure, critical environments.
- Excellent communication and documentation skills.
- Experience working with cross-functional teams.
Benefits:
- Health insurance with a leading global provider for medical insurance.
- Career progression and growth through challenging projects and work.
- Employee engagement and wellness campaign activities throughout the year.
- Excellent learning and development opportunities.
- Annual flight tickets to home country.
- Inclusive and diverse working environment.
- Flexible/hybrid working environment.
- Open-door policy.
