OT Network & System Engineer

Alpiq Group; Vaud; On-site; CHF 140,000 - 190,000; Full time

Job summary

Alpiq Group in Lausanne, Switzerland, seeks an experienced OT cybersecurity professional to harden and monitor critical OT networks. You will administer security equipment, manage firewall rules, and collaborate across OT, IT, and operations to strengthen defenses and resilience.

Responsibilities include developing OT network security architectures, governing cybersecurity measures, supporting partner companies, and contributing to maturity assessments and incident response.

Qualifications

• 5 years experience in OT cybersecurity and firewall administration.
• Knowledge of critical infrastructure and industrial environments is an advantage.
• Strong communication for technical and decision-making audiences.

Responsibilities

• Security equipment management (firewalls, PAM, threat detection, SIEM) and rule reviews.
• IT for OT systems management (Windows and Linux).
• OT network architecture and segmentation development.
• OT governance and cybersecurity measures.
• Support for partner companies' OT security.
• Security maturity assessments and audits.
• Incident analysis and response support.
• Documentation of architectures and procedures.
• 24/7 on-call service for IT for OT and OT security.

Skills

OT cybersecurity

Firewall administration

Network security

Risk analysis

Education

Higher education in IT / networks / cybersecurity

Tools

Windows/Linux administration

VMware virtualization

Job description

Role type: Permanent | Location: Switzerland | Model: On-Site | Level of travels: 10 %

Are you looking to make an impact in the energy sector? Become part of Alpiq - your energy matters!

Alpiq is one of Switzerland’s leading electricity producers and a key energy services provider across Europe. Headquartered in Lausanne and powered by a strong portfolio of hydropower, nuclear, and renewable energy sources, we’re all about impact, for the climate, for people, and for the security of supply.

More than 1,300 colleagues from nearly 60 nationalities bring their energy to a shared purpose: Together for a better climate and an improved security of supply.

We work in a values-driven culture shaped by trust, curiosity, and respect. Our 4 company values have been co-created with our employees and are embedded in everything we do as a company:

"We are ALP1Q " - reflects our team spirit

"We learn and grow together" - we have courage

"We share the steering wheel" - we take ownership

"We focus on the outcome" - your impact matters

At Alpiq, your energy matters!

mission

Ensure the operational security of Alpiq’s critical OT infrastructure by protecting industrial networks, control systems and communication flows. Define, maintain and continuously improve technical OT cybersecurity measures to reduce operational risks, strengthen asset resilience and help increase security maturity across Alpiq, its affiliated companies and its partners.

Position characteristics

Operational role in administering, monitoring and maintaining OT infrastructure, including direct responsibility for managing network security equipment.

• Expert role in cybersecurity for critical OT and industrial environments.
• Maintain and develop OT network architecture, segmentation, configurations and associated documentation.
• Contribute to projects, audits and improvement initiatives, acting as a technical expert for sites and partners.
• Participate in the on-call service to ensure the continuity and resilience of critical OT environments.
• Collaborate with OT, IT, cybersecurity and operations teams.

Your main responsibilities

• Security equipment management (firewalls, PAM, threat detection, SIEM, etc.) Administer, configure and maintain the equipment. Design filtering rules, analyse flows, approve communication openings and perform periodic reviews in accordance with segmentation and defence-in-depth principles.Analyse and address alerts generated by this equipment, as well as SOC alerts.
• IT for OT systems managementAdminister, configure and maintain Windows- and Linux-based systems and appliances.
• Network architecture and segmentationContribute to defining and developing OT network security architectures, trust zones and interconnections with IT environments and partners.
• OT governance and cybersecurityDefine, implement and maintain cybersecurity measures applicable to OT infrastructure. Contribute to standards, directives, risk assessments and remediation plans.
• Support for partner companies: Advise and support Alpiq’s partner companies in securing their OT environments.
• Security maturityContribute to maturity assessments, audits and the monitoring of measures designed to sustainably strengthen the security level of industrial infrastructure.
• Expertise and incident responseProvide expert support to projects and operations, participate in security incident analysis, and contribute to technical investigations and corrective actions.
• Documentation and continuous improvementMaintain documentation for architectures, configurations, filtering rules and procedures. Keep abreast of threats, technologies and industrial security frameworks.
• 24/7 on-call serviceParticipate in the on-call service for IT for OT, Facility Management and OT security.

Your impact

• By strengthening the security, resilience and maturity of Alpiq’s OT environments, this position helps safeguard business continuity, support operational excellence and protect critical energy assets from evolving cyber threats.

Your profile

• Higher education in IT, networks, telecommunications, cybersecurity or an equivalent field.
• 5 years experience in OT cybersecurity and firewall administration.
• Knowledge of critical infrastructure and industrial or hydropower environments is an advantage.
• Experience in consulting, supporting partners or assessing security maturity.
• Strong risk analysis skills and a strong sense of responsibility.
• Ability to analyse risks and a strong sense of responsibility.
• Ability to advise, influence and support change.
• Communication tailored to technical and decision-making audiences.
• Autonomy, rigour and reliability in a critical environment.
• Collaborative mindset and ability to represent the organisation in industry forums.

Core requirements

• OT / ics cybersecurity: Advanced
• Cybersecurity equipment administration: Expert
• Industrial network architecture and segmentation: Advanced
• Incident investigation and response: Advanced
• OT security advisory and support: Advanced
• Communication: Advanced

Knowledge of cybersecurity standards

• SCADA environments and industrial control systems: Intermediate
• Windows Server and Linux administration: Advanced
• VMware virtualisation: Intermediate
• Technical French: Advanced
• Technical German: Intermediate
• Technical English: Advanced

Disclaimer: Please note that applications submitted by agencies or third-party recruiters will not be considered unless the agency is part of our Preferred Supplier List (PSL).

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At Alpiq, we are committed to creating an inclusive work environment, where everyone can bring their 'whole selves' to work and feel valued, respected, and heard. This principle is central to our company’s purpose, values, and leadership approach. We strongly believe that organizations thrive through the inclusion of diversity. Everyone’s energy matters regardless of characteristics, such as age, gender, nationality, language, sexual orientation and identity, religion, social or ethnic background or any other personal traits.

Data protection

At Alpiq, data privacy is an important topic. Please therefore take note of the corresponding Privacy Notice that appears in the online application form and explains in detail the purpose for which we process your personal data. It is of great concern to us to inform you as transparently as possible and process your data only in a fair manner.