ICS Nozomi Engineer
Thales
Posted: March 27, 2026
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Quick Summary
Design, deploy, and administer OT monitoring solutions to ensure optimal system performance and security in industrial environments.
Required Skills
Job Description
Location: Lisbon, Portugal
S21sec by Thales is looking for an OT Engineer for its Industrial Cybersecurity department to design, deploy, support, and administer OT monitoring solutions. At S21sec we consider ourselves disruptive when it comes to organizing the way we want to work. That is why we are continually innovating our policies, to allow employees to enjoy a real reconciliation of their work and family life.
About the Role
The OT Engineer will be responsible for designing and implementing OT environment analysis tools, providing technical consulting, and conducting technical reviews of the OT environment.
Responsibilities
• Design and technical consulting for OT environment analysis tools
• Implementation and deployment of OT environment analysis tools, use of OT environment tools (Nozomi, Tenable, Claroty, Armis, etc.)
• Technical reviews of the OT environment (vulnerability discovery, traffic analysis, passive scans, script development for the OT environment)
Qualifications
• Industrial Engineer/Telecommunications Engineer/Computer Engineer
• Specialised certifications in general OT environments or specific to the aforementioned products (Nozomi, Tenable OT, Claroty, etc.)
Required Skills
• Knowledge and experience in the deployment, management and support of OT environment tools such as Nozomi, Tenable OT, Claroty, etc.
• Knowledge of IEC 62443, NIST 800-82, or any other control framework
• Knowledge of scripting language
• Knowledge of OT environment vulnerabilities
• OT/ICS protocols and devices
Pay range and compensation package
• We support a phenomenal lifestyle and work-life-balance with our flexible hours and flexible remote work policy.
• 36 days off per year. At S21sec you can organize your working day to increase the 24 days of vacation that we offer you.
• Uplifting and creative work environment
• Sem termo contracts
• Cool offices in Portugal and Spain
• Maximized net salary, decide which Flexible Remuneration package
• Expand your Certifications, with our Annual Training Plan (based on technical Certifications, Languages, training in Soft Skills...)
• Clear and transparent objectives, we have an Annual Bonus Policy, based on KPIs.
Equal Opportunity Statement
If you are a person passionate about Cybersecurity, we are your Company. Come Join our Team!