Jobs in Portugal, in English.

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

On-site in Lisbon or Porto·Full-time·Added today (last checked 28 Oct)

Agency

Randstad Portugal

1004 open roles

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Our summary

Work mode: On-site, Lisbon or Porto
Contract: Full-time
Experience: Senior level

Skills

Requirements

What we're looking for

competências

Proven background in industrial operational environments (e.g., Oil & Gas / Refineries, Power Generation, Transmission & Distribution / Substations, Manufacturing, Water Utilities, Chemicals, or Mining);
Strong grasp of industrial cybersecurity concepts, including the Purdue Enterprise Reference Architecture (PERA / Purdue Model), Distributed Control Systems (DCS), and Safety Instrumented Systems (SIS);
Working knowledge of key standards and frameworks: IEC 62443, NIST CSF, NIST SP 800-82, C2M2, CIS Controls (OT context), and MITRE ATT&CK for ICS;
Solid understanding of industrial networking concepts and protocols (Modbus TCP/IP & RTU, DNP3, OPC Classic / OPC-UA);
Hands-on experience with OT visibility and security platforms (e.g., Nozomi Networks, Claroty, Dragos, Armis, TXOne Networks, or Industrial Defender).
Preferred Qualifications:

Degree in Cybersecurity, Computer Science, Electrical Engineering, Industrial Automation, Telecommunications, or a related field;
Relevant industry certifications (GICSP, GRID, ISA/IEC 62443 Cybersecurity Expert, CISSP, CISM, Security+, CCNA/CCNP);
Experience supporting digital transformation, Industry 4.0, or cloud-connected industrial environments;
Knowledge of Zero Trust architecture applied to OT;
Familiarity with functional safety standards (IEC 61511 / IEC 61508);
Full professional proficiency in English (spoken and written).

Pay & benefits

What you'll get

principais benefícios
Integration into a growing, market-leading multinational organization;
Structured career development pathways in an elite cybersecurity team;
Opportunity to work on high-impact, challenging projects protecting critical national infrastructure;
Competitive compensation package and comprehensive benefits.

Randstad's mission is to become the most equitable and specialised talent company in the world, so we reiterate that we welcome people with a wide range of skills and experience. We are committed to ensuring that our recruitment and hiring process meets the needs of all people. If you need to make any adjustments to make your application or interview more comfortable, please don't hesitate to let our recruitment consultants know.

The role

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.

What you'll do

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 strategic OT cybersecurity roadmaps and remediation plans;
Support clients in achieving compliance with regulatory frameworks and standards such as NIS2 and IEC 62443;
Review and assess OT network architectures, focusing on segmentation and secure remote access;
Conduct OT vulnerability assessments, technical reviews, and security architecture audits;
Support the deployment, configuration, and optimization of OT security monitoring and asset visibility platforms;
Work closely with engineering, operations, maintenance, and IT teams to implement pragmatic security improvements with minimal operational disruption;
Contribute to incident response planning and cyber resilience initiatives for industrial environments;
Produce executive-level reports, detailed technical documentation, and client presentations.