Senior Operational Technology - Security Consultant (m/f/x)

Randstad Digital specializes in IT recruitment, and we are currently hiring a Senior Operational Technology - Security Consultant for a leading IT consulting firm in Lisbon or Porto.

We are looking for an OT Security Consultant with hands-on experience in industrial
environments to join our Cybersecurity practice. The ideal candidate combines practical
knowledge of industrial operations with cybersecurity expertise, helping clients protect critical
infrastructure and manufacturing environments against evolving cyber threats.
This role involves working with organizations across different countries and sectors such as
Energy, Utilities, Oil & Gas, Manufacturing, delivering OT security assessments, strategy,
architecture, and implementation projects.

responsabilidades chave

- Perform OT cybersecurity maturity and risk assessments aligned with recognized
industry standards.
Assess industrial control systems (ICS), SCADA, DCS, PLC, and IIoT environments.
Develop OT cybersecurity roadmaps and remediation plans.
Support clients in achieving compliance with regulations and standards such as NIS2 and
IEC 62443.
Review and assess OT network architectures, including segmentation and secure remote
access.
Participate in OT security assessments, vulnerability assessments, and architecture
reviews.
Support deployment and optimization of OT security monitoring and asset visibility
solutions.
Work closely with engineering, operations, maintenance, and IT teams to implement
security improvements with minimal operational impact.
Contribute to incident response planning and cyber resilience initiatives for industrial
environments.
Produce technical documentation, executive reports, and client presentations.
Stay current on emerging threats targeting industrial environments and critical
infrastructure.

competências

Experience
Previous experience working in industrial operational environments, such as:
o Oil & Gas / Refineries
o Power Generation
o Transmission & Distribution / Electrical Substations
o Manufacturing
o Water Utilities
o Chemicals
o Mining
Strong understanding of industrial cybersecurity concepts, including:
o Purdue Enterprise Reference Architecture (PERA / Purdue Model)
o Distributed Control Systems (DCS)
o Safety Instrumented Systems (SIS)
Working knowledge of one or more of:
o IEC 62443
o NIST Cybersecurity Framework (CSF)
o NIST SP 800-82
o C2M2 (Cybersecurity Capability Maturity Model)
o ISA/IEC 62443
o CIS Controls (OT context)
o MITRE ATT&CK for ICS
Understanding of industrial networking concepts and protocols including several of the
following:
o Modbus TCP/IP
o Modbus RTU
o DNP3
o OPC Classic / OPC-UA
Experience with one or more OT security platforms such as:
o Nozomi Networks
o Claroty
o Dragos
o Industrial Defender
o Armis
o TXOne Networks

Preferred Qualifications
One or more of the following would be an advantage:

Degree in Cybersecurity, Computer Science, Electrical Engineering, Industrial
Automation, Telecommunications, or related field.
Industry certifications such as:
o GICSP
o GRID
o ISA/IEC 62443 Cybersecurity Expert
o CISSP
o CISM
o Security+
o CCNA / CCNP
Experience supporting digital transformation or Industry 4.0 initiatives.
Experience with cloud-connected industrial environments.
Knowledge of Zero Trust applied to OT.
Familiarity with industrial safety standards and functional safety (IEC 61511 / IEC
61508).

principais benefícios

• Integration into a growing multinational company;
  
• Career development opportunities;
  
• Opportunity to work on exciting and challenging projects.