Cybersecurity Expert IT/OT (m/f/d)

Siemens Mobility Portugal is a leading provider of innovative mobility products and solutions. Software solutions and customer services along the wide-ranging product life cycle complete the portfolio. Siemens Mobility empowers its customers to understand their IoT data, generated from rail assets, allowing them to gain valuable insights and get more out of their systems.

We are looking for a Cybersecurity Expert (m/f/d) to join our team!

Your new area of responsibility – challenging and future-oriented

• As a Cybersecurity Expert, you embody the “Product and Solution Security” process within the organization and in projects.
• As part of our team, you develop IT security concepts and support the implementation of security requirements.
• Already during the proposal phase, you carry out a high-level risk assessment for the project bid, thereby identifying the IT security risks for the future project.
• You support our project teams in the development of security architecture for projects. Furthermore, you conduct discussions with customers and suppliers on IT security throughout all phases of the project.
• Subsequently, as a security expert, you conduct threat and risk analyses and, together with the project team, determine appropriate countermeasures.
• Together with our pentest team, you verify and validate the security measures to ensure that customer expectations are met.
• You specify and maintain security requirements and also support the fulfilment of international and regional security standards and regulations.

Your qualifications – solid and appropriate

• You have completed an (information) technology or scientific Master's degree or possess an equivalent qualification.
• You have several years of professional experience in IT infrastructure technology projects, such as network security, system hardening and storage technologies (CCNA R&S or Security certification, or equivalent, is advantageous)
• You possess a sound understanding of cloud technologies (e.g. AWS).
• You have knowledge of security standards and best practices (e.g. IEC 62443, NIST, ISO 27001).
• Certifications in the fields of cybersecurity and cloud environments (e.g., CISSP, CISM, CCSP, AWS) are advantageous.
• Highly valued is the ability to analyze and contextualize vulnerabilities within projects and solutions, understanding of Common Vulnerabilities and Exposures (CVE) and Common Vulnerability Scoring System (CVSS).
• You have experience in planning, coordinating, and overseeing the implementation of projects.
• You think with both the customer and solutions in mind, communicate readily, and present yourself confidently to a wide range of stakeholders, including technical and management teams.
• You are able to communicate fluently in English; good knowledge of German is also considered an advantage.
• You enjoy working in international teams on global challenges.

What you can expect from us: A flexible working model to promote a better work-life balance, health insurance, and access to our on-site medical center. Two volunteering days per year and four additional bridge days annually. In addition, you’ll have access to exclusive discounts on Siemens and Bosch brands, and Siemens Learning Platforms offering internal courses and external platforms such as Coursera, Udemy, and LinkedIn Learning.

this sounds exciting to you, then send us your application – in English – and we will get back to you!

At Siemens Mobility, we believe physical barriers are not related to potential. Only potential matters to us. We are dedicated to quality, equality, and valuing diversity. Therefore, we encourage applications that reflect the diversity of the communities within which we work.

Job ID

522277

Posted since

11-Sep-2026

Organization

Mobility

Field of work

Cybersecurity

Company

SIEMENS MOBILITY, UNIPESSOAL LDA

Experience level

Experienced Professional

Job type

Full-time

Work mode

Hybrid (Remote/Office)

Employment type

Permanent

Location(s)

• Amadora - Lisboa - Portugal