We are supporting a rapidly growing international energy technology company in the appointment of an OT / ICS Cybersecurity Engineer to help protect its grid-connected battery energy storage sites and associated control systems.

Si los siguientes requisitos del puesto y la experiencia coinciden con sus habilidades, por favor, asegúrese de enviar su solicitud sin demora.

This is not a traditional corporate IT security position. The role focuses on Operational Technology security: protecting the physical equipment, industrial control systems and communications networks that operate large-scale BESS facilities.

You will also ensure that battery sites can communicate securely with the company’s cloud-based Virtual Power Plant platform.

Key responsibilities

- Secure communications between BESS sites and the cloud/VPP platform.
- Design and maintain secure separation between OT and corporate IT networks.
- Protect SCADA systems, PLCs, RTUs, inverters and other site-control equipment.
- Configure and review firewalls, VPNs, encryption and access controls.
- Secure remote access for engineers, operators and approved third parties.
- Identify vulnerabilities across operational systems and site networks.
- Monitor OT environments for cyber threats and suspicious activity.
- Support incident response and remediation across live operational assets.
- Ensure compliance with relevant industrial cybersecurity standards.
- Work closely with engineering, software,



operations and project-delivery teams.

What we’re looking for

- At least three years’ experience in OT, ICS or industrial cybersecurity.
- Practical experience protecting live industrial, energy or grid-connected assets.
- Strong knowledge of IEC 62443.
- Experience with OT/IT network segmentation and the Purdue Model.
- Understanding of industrial communication protocols such as IEC 61850, Modbus or DNP3.
- Experience securing SCADA systems, PLCs, RTUs, inverters or similar operational equipment.
- Hands-on knowledge of firewalls, VPNs, encryption, access controls and secure remote-access solutions.
- Ability to assess vulnerabilities and translate security risks into practical technical improvements.
- Strong communication skills and the ability to work across technical and operational teams.

Desirable experience

- Battery energy storage systems.
- Power generation, utilities, substations, solar, wind or other critical infrastructure.
- ISO 27001 or related security frameworks.
- Platforms and technologies such as Palo Alto, Fortinet, Cisco, Splunk, Dragos, Claroty or Nessus.
- Secure integration between physical energy assets and cloud-based software platforms. xkdbapo

This is an excellent opportunity to take responsibility for protecting real-world energy infrastructure within a growing international battery storage and energy technology business.

📌 OT / ICS Cybersecurity Engineer (Madrid)
🏢 NetZero
📍 Madrid