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Security Specialist

Posted 1 Oct 2025
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Work experience
0 to 10 years
Full-time / part-time
Full-time
Job function
Salary
€4,151 - €8,197 per month
Degree level
Required language
Dutch (Fluent)

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Join TenneT as a Security Specialist

At TenneT, we work every day on the electricity grid of tomorrow. Our goal? A reliable, affordable, and sustainable energy system. As a Security Specialist within the BTO Security & Compliance team, you play a crucial role in realizing this ambition. Ready to make an impact?

As a Security Specialist, you will play a key role in ensuring the safety and security of our organization’s assets, personnel, and information.

Your Role

How do you keep the lights on in the Netherlands? As a Security Specialist, you are responsible for safeguarding information security within TenneT. You prevent damage from security incidents and identify risks that could affect our vital infrastructure.

Your responsibilities include:

  • Implementation of the information security plan: You translate policy into practical measures and ensure compliance with security standards such as ISO 27001 and IEC62443.
  • Support during audits and incidents: You assist with internal and external audits and advise on security incidents and remediation actions.
  • Risk analysis and advisory: You conduct risk assessments and advise IT/OT teams on mitigation and compliance.
  • Collaboration and knowledge sharing: You work closely with GRC teams, auditors, and operations and act as a trusted advisor.
  • Monitor and analyze security systems for potential threats or breaches.
  • Conduct regular risk assessments and recommend improvements.
  • Develop and enforce security policies and procedures.
  • Respond to security incidents and provide detailed reports.
  • Collaborate with other departments to ensure comprehensive security coverage.
  • Stay up to date with the latest security trends and technologies.

You will be part of the Security & Compliance team, within BTO. Together, you build a robust and secure IT/OT environment that supports the energy transition. The team fosters an open and collaborative work atmosphere, where innovation and reliability are key.

Your Profile & Background

At TenneT, we seek professionals who contribute to the future of our electricity grid. We expect you to bring the right experience and skills to make a valuable contribution to our team and mission.

What do you bring?

  • Security expertise: In-depth knowledge of information security, audits, and compliance (ISO 27001, IEC62443).
  • Analytical and problem-solving skills: You think ahead, analyze risks, and provide practical solutions.
  • Communication skills: Clear and effective communication with various stakeholders, both verbally and in writing in Dutch and English.
  • Proactive mindset: You take initiative, think along, and know how to prioritize in a dynamic environment.
  • Team player: You proactively collaborate with colleagues and stakeholders to achieve shared goals.
  • Flexibility: You adapt to changing conditions and switch effortlessly in an agile work environment.
  • Ownership and result-driven attitude: You show commitment and have a “will do” mentality.
  • Focus on quality and detail: You work accurately and are committed to continuous improvement and innovation.
  • Supportive and connecting: You help others achieve their goals and contribute to a positive team dynamic.
  • Strong analytical skills, attention to detail, and a proactive approach to problem-solving.
  • Experience in security operations or a related field is preferred.

Additionally, you have:

  • At least 5 years of experience in IT/OT security, preferably in a complex technical environment.
  • A completed HBO or WO degree in IT, cybersecurity, or a related field.
  • A recognized security certification such as CISM, CISSP, or equivalent (preferred).
  • Knowledge of GDPR and DPIAs is a plus.
  • Fluency in Dutch is required for this position, both written and spoken.

What We Offer

TenneT offers you the opportunity to contribute to a sustainable energy future. Together with colleagues, partners, and stakeholders, you work on innovative solutions that enable the energy transition. We give you the space to develop your talent and work in an environment where your growth is central.

We offer you:

  • A year contract with a one-month probation period.
  • A salary in scale 8: €4.151 to €8.197 per month, with 8% holiday allowance, 6% year-end bonus, and 70% pension contribution.
  • 43 vacation days per year (based on full-time employment).
  • Hybrid working, including an internet allowance of €32.50 and a home office allowance.
  • Support for your vitality, with a contribution for a gym membership and health insurance.
  • Development opportunities through the TenneT Academy.

Do you have questions about the position? Contact Hans Milatz via hans.milatz@tennet.eu. Do you have questions about the recruitment process? Contact Daisy Zandi Zand via daisy.zandizand-cusell@tennet.eu.

TenneT is Europa's eerste grensoverschrijdende netbeheerder (TSO) én Europa's eerste netbeheerder op zee. Met bijna 25.000 kilometer aan hoogspanningsverbindingen op land en in zee en 8.300 medewerkers zorgen wij voor de dagelijkse stroomvoorziening van meer dan 43 miljoen eindgebruikers in Nederland en grote delen van Duitsland. TenneT heeft nu en in de komende jaren zó veel innovatieve en complexe projecten op stapel staan dat we altijd op zoek zijn naar gedreven vakmensen en specialisten!

Energy
Arnhem
Active in 10 countries
4,000 employees
70% men - 30% women
Average age is 44 years