The OT Tecnology Assurance engineer acts as the technical authority for OT cybersewcurity across the asset lifecycle, ensuring that designs and systems delivered by EPCs, OEMs and O M providers comply with Greenvolt requirements, reference architectures and industry best practices.
Provides hands-on assurance from design review and technology evaluation through FAT/SAT, commissioning, COD readiness and operational support The main responsibilities are: Maintain and enhance visibility across Greenvolt's OT environments, ensuring accurate asset inventories, classification and monitoring capabilities are in place.
Review OT security architectures, network segmentation, identity and access management and other key controls, and lead security-by-design reviews across the asset lifecycle.
Review and assure OT technical deliverables produced by EPCs, OEMs and O M providers, ensuring alignment with Greenvolt requirements, reference architectures and applicable industry practices for all technologies across the group Define and review technical cybersecurity OT acceptance criteria and participate in FAT, SAT and commissioning activities, documenting findings, following up deviations and confirming that agreed requirements are met before acceptance Assess OT readiness for Commercial Operation Date, including SCADA functionality, industrial communications, network configuration, system inventories, backups, remote access and operational handover documentation Review OT network and SCADA architectures, including segmentation, connectivity, hardening and patching arrangements, and provide technical input to the development and continuous improvement of OT standards.
Provide OT technical due diligence for acquisitions, repowering initiatives and major asset changes, assessing the condition, suitability, risks and integration requirements of existing and proposed OT environments.




Support the onboarding and integration of operational assets, coordinating technical interfaces with internal teams, EPCs, OEMs, O M providers and other third parties to enable a controlled transition into operations.
Act as the escalation point for complex OT and SCADA issues and significant OT incidents, leading or coordinating technical troubleshooting, root-cause analysis and recovery support.
Requirements Bachelor's degree in Engineering, Information Technology, Computer Science, Telecommunications or a related discipline.
5+ years of experience in cybersecurity operations, vulnerability management, security monitoring, incident response or related functions.
Proven experience reviewing and assuring OT architectures, technical specifications and engineering deliverables produced by EPCs, OEMs, system integrators and O M providers.
Experience defining technical and OT cybersecurity acceptance criteria, documenting deviations and following remediation actions through to closure.
Ability to troubleshoot complex OT, SCADA, communications and system integration issues and to coordinate root-cause analysis and technical resolution with internal teams and third parties.
Working knowledge of relevant OT cybersecurity standards and frameworks, including IEC *****, NIST Cybersecurity Framework and ISO/IEC *****.
Experience in renewable energy—particularly solar PV, wind or energy storage—and familiarity with plant controllers, PPCs, RTUs, PLCs, HMIs and data historians would be highly valued.
Fluent in English Strong technical judgement and ability to translate business, engineering and cybersecurity requirements into practical solutions.
Excellent analytical, troubleshooting and root-cause analysis skills.
Effective communication and stakeholder management.
Proactive and continuous improvement mindset.
Ability to review and challenge technical solutions constructively and provide clear, evidence-based assurance recommendations.

📌 Ot Technology Assurance (Madrid)
🏢 Greenvolt
📍 Madrid