OT Security Engineer (ICSS/SCADA) - Hybrid Madrid/BCN

UST España & Latam; Barcelona; Hybrid; EUR 55,000 - 85,000; Full time

Benefits offered by this job

Annual leave and holiday entitlement

Flexible benefits program (Retribución

Health care plan

Teleworking compensation

Life and accident insurances

Training platforms access

Remote work policy

Real Work Life Balance measures

Club Platform discounts

Gym access discounts

Referral bonuses

Job summary

UST España & Latam is seeking an experienced OT Security Engineer to support Threat and Vulnerability Management (TVM) across Operational Technology environments. The role focuses on IC/SCS/SCADA security, risk reduction, and secure configuration in collaboration with IT and OT teams.

The ideal candidate has 4+ years in OT security, hands-on experience with TVM tools, and familiarity with Defender for IoT, Nessus, and Qualys.

Qualifications

• Nozomi (must).
• Minimum 4+ years of experience in OT security, OT infrastructure, or related cybersecurity roles.
• Strong understanding of ICS, SCADA architectures, and network segmentation in industrial environments.
• Hands-on experience with TVM tools, frameworks, and processes.
• Familiarity with Microsoft Defender, SIEM, and endpoint protection in OT.
• Knowledge of Modbus, DNP3, OPC protocols.
• Experience configuring firewalls, IDS/IPS, and network monitoring.
• Strong communication, documentation, and stakeholder management skills.

Responsibilities

• Support TVM activities in OT environments, including vulnerability scanning, assessment, prioritization, and remediation tracking.
• Work with infrastructure and engineering teams to secure configuration, patching, and hardening.
• Analyze and respond to security events and incidents impacting OT systems.
• Implement, maintain, and monitor security controls for ICS/SCADA systems, PLCs, and industrial devices.
• Develop and maintain OT asset inventories and risk profiles.
• Align IT and OT security strategies with cross-functional teams.
• Assist in deployment and tuning of security tools such as Defender for IoT, Nessus, Qualys.
• Document vulnerabilities, remediation progress, and overall risk posture to stakeholders.
• Stay current with OT threats, vulnerabilities, and mitigation techniques.

Skills

Nozomi

OT security

ICS/SCADA

TVM tools

Defender for IoT

Nessus

Qualys

SIEM

Endpoint protection

Industrial protocols

Firewalls

CVEs

Stakeholder management

Documentation

Tools

Microsoft Defender for IoT

Nessus

Qualys

Job description

UST España & Latam is seeking an experienced OT Security Engineer to support Threat and Vulnerability Management (TVM) across Operational Technology environments. The role focuses on IC/SCS/SCADA security, risk reduction, and secure configuration in collaboration with IT and OT teams.

The ideal candidate has 4+ years in OT security, hands-on experience with TVM tools, and familiarity with Defender for IoT, Nessus, and Qualys.