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OT Security Engineer | SysteCom, member of QnR Group
Role overview
We are seeking a hands-on OT Security Engineer with strong Fortinet and networking expertise to design, implement, secure, and support critical operational technology infrastructure and industrial networks.
The role is ideal for professionals who enjoy a combination of technical implementation, troubleshooting, support, and infrastructure security within mission-critical environments.
About QnR Group
QnR Group is a technology group with 35 years of experience, 8 companies, 4 delivery centers and 210+ professionals across Greece, Belgium, Cyprus and Poland. Listed on the Athens Stock Exchange since 2000, we deliver mission-critical digital transformation projects for the public and private sector. The Group’s capabilities covers software engineering, enterprise and generative AI, cybersecurity, cloud infrastructure, SAP and ServiceNow solutions, core banking and maritime intelligence.
About SysteCom
SysteCom, a member of QnR Group, specializes in cybersecurity, digital resilience and IT infrastructure. The company delivers solutions and services that help organizations protect their systems and data, strengthen operational continuity and modernize their technology environments. Bringing together security and infrastructure expertise, SysteCom supports businesses across sectors in building secure, reliable and resilient digital operations.
Requirements
What you'll work on:
Deploy, configure, and maintain FortiGate and related Fortinet security solutions
Design and implement secure network architectures for OT and industrial environments
Manage IT/OT network segmentation and secure connectivity between operational sites
Configure VPNs, firewall policies, routing, and security controls
Monitor, troubleshoot, and resolve network and security incidents
Perform security hardening, vulnerability remediation, and configuration reviews
Support OT cybersecurity projects, upgrades, and infrastructure deployments
Develop technical documentation, implementation guides, and network diagrams
Work with field engineers, vendors, and operational teams to ensure service availability and security
Participate in technical assessments, testing, and continuous improvement initiatives
What you bring:
3+ years of experience in Network Security, Cybersecurity, or Infrastructure Engineering
Hands-on experience with Fortinet security solutions , particularly FortiGate
Strong understanding of: Routing & Switching, TCP/IP Networking, VPN Technologies, Firewall Administration, Network Segmentation
Experience implementing and supporting enterprise or industrial network environments
Strong troubleshooting and analytical skills
Ability to review and produce technical specifications and documentation
Strong communication and stakeholder management skills
Desirable certifications: GICSP (Global Industrial Cyber Security Professional), ISA/IEC 62443 Certifications, Nozomi / Claroty, Fortinet / Palo Alto (ΟΤ Security), CCNA / CCNP (Routing & Switching).
Nice to have:
Experience in OT, Utilities, Energy, Industrial, or Critical Infrastructure environments
Experience with monitoring, logging, and security management platforms
Understanding of OT cybersecurity principles and best practices
Experience working in regulated environments