infraone’s purpose is to protect the critical infrastructure modern life depends on—from factories that produce essential goods to utilities and water supply—by providing world-class cybersecurity and network services to operational-technology (OT) environments.
Born from an engineering company in 2011, we have delivered 700+ cybersecurity and IT/OT infrastructure projects and maintain 24×7 support for leading manufacturers across Europe. Guided by the values of Ownership, Customers First, Trust, Ambition, and Excellence, we are building Europe’s leading OT-cybersecurity services firm.

Relocation from other countries will not be available for this role

The Opportunity
As a Senior Network & Security Engineer you will join the Network & Security team supporting some of the largest pharmaceutical manufacturers in Europe.
Your mission is to ensure the design, administration and reliability of all systems that support production processes, from core IT services to industrial OT infrastructure.



You will be part of a team responsible for maintaining the availability and robustness of networks that are critical to manufacturing continuity.

Key Responsibilities
Lead technical engagements: Drive the design, deployment, and integration of advanced industrial cybersecurity (OT/IT) solutions, ensuring security, reliability, and compliance with industry standards.
Hands-on expertise: Act as a senior technical authority for complex network and security architectures, including segmentation, firewalls, IDS/IPS, secure remote access, and industrial protocols.
Incident response & troubleshooting: Provide expert-level (L3) support, root cause analysis, and remediation for critical OT/IT security incidents.
Consulting & client advisory: Serve as a trusted technical advisor to clients, guiding them in assessing risks, designing secure architectures, and implementing cybersecurity strategies for industrial environments.
Technical leadership: Mentor and support junior consultants, cond

📌 Senior Network Engineer (Barcelona)
🏢 infraone
📍 Barcelona