Cyber Security Engineer - Air Traffic Management

Location: Paço de Arcos - Q45, Portugal

For more than 35 years, Thales acts in Portugal for global Defense and Aerospace markets and promotes and delivers innovative solutions that enhance its customer’s critical systems´ security, on land, sea, air, space and cyberspace, through a technical team of excellence.

If you want to be part of Thales in Portugal and have experience as a Cyber Security Engineer, this is the right opportunity for you!

Responsibilities:

• Analyze security requirements and constraints to develop high-level, compliant security architectures;
• Lead the design and technical development of security components such as SIEM, IAM, gateways, and detection/deception systems;
• Ensure architectural solutions align with business policies and major cybersecurity frameworks (e.g., NIST, ISO);
• Conduct risk assessments, study alternative solutions, and justify architectural choices;
• Coordinate technical security efforts across multidisciplinary teams;
• Produce architecture and engineering reports, specifications, and documentation to support accreditation and certification processes;
• Collaborate with cyber suppliers and vendors to assess and select appropriate security products;
• Support pre-sale and sales activities by providing cybersecurity expertise for bids and proposals;
• Translate customer security requirements into actionable delivery plans.

What We’re Looking For:

• Degree in Engineering, Computer Science or related discipline majoring in Cybersecurity;
• 3+ years of proven experience in the Cybersecurity field;
• Strong knowledge in Cybersecurity solutions (e.g. IAM, PAM, SIEM, EDR, Keys, Firewall), architecture design and integration;
• Knowledge of Systems Engineering Lifecycle and relevant standards (eg. ISO/IEC15288);
• Experience in vulnerability management and threat modelling;
• Sound judgement and independent decision-making capability where necessary;
• Very good written and oral proficiency in English (mandatory)
• Availability to travel abroad.

Nice to Have:

• Postgraduate studies in Cybersecurity;
• Cyber Industry qualifications (e.g. CISSP, CompTIA Security+, CCNA Security, GIAC, SABSA or
• similar);
• Experience in system hardening and hardening review based on CIS Benchmarks or DISA STIG
• frameworks;
• Knowledge of ISO 27001 foundational requirements;
• Experience in ATM Domain and related standards (eg. ICAO, Eurocontrol , or safety critical systems).

The Group invests more than €4.5 billion per year in Research & Development in key areas, particularly for critical environments, such as Artificial Intelligence, cybersecurity, quantum and cloud technologies.

In 2025, the Group generated sales of €22.1 billion.

For our more than 85,000 employees in 65 countries we open up visionary perspectives, realise individual career paths and enable creative freedom. This is achieved with courage, versatility and the firm intention to make the demanding challenges of our time safer and more inclusive. With our sustainable value-focused management we support diversity actively.

If you are interested send you CV in English.

Say HI* – Your journey to us

At times of change our international teams are ready to meet the complexity of today with the industry-leading technologies of tomorrow. Will you be part of it? Your contact Jéssica Carrasqueira is looking forward to your online application on our Career portal.

Jéssica Carrasqueira – Talent Acquisition Partner

*Human Intelligence

Interested in finding out more about Thales and why you should join us?
Say HI* to new career opportunities.