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 supportThe 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 62443, NIST Cybersecurity Framework and ISO/IEC 27001.- 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