Senior Security Engineer - NGFW NAC And OT

Help AG is looking for 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.

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, 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 one of the leading global providers for medical insurance.
• Career progression and growth through challenging projects and work.
• Employee engagement and wellness campaigns 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.
  
  
  

About Us

Help AG is the cybersecurity arm of e& enterprise (formerly Etisalat Digital) and provides leading enterprise businesses across the Middle East with strategic consultancy combined with tailored information security solutions and services that address their diverse requirements, enabling them to evolve securely with a competitive edge.

Present in the Middle East since 2004, Help AG was strategically acquired by e& (formerly Etisalat Group) in 2020, hence creating a cybersecurity and digital transformation powerhouse in the region.

Help AG has firmly established itself as the regions trusted IT security advisor by remaining vendor-agnostic, trustworthy, independent, and maintaining its focus on all aspects of cybersecurity.

With best of breed technologies from industry-leading vendor partners, expertly qualified service delivery teams and a state-of-the-art consulting practice, Help AG delivers unmatched value to its customers by strengthening their cyber defenses and safeguarding their business.

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