System Engineer - Air Traffic Control
Thales
Posted: March 20, 2026
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Quick Summary
As a System Engineer, you will work on the specification, verification, validation and qualification of solutions for customers. You will be responsible for ensuring the quality of the systems, working with a multidisciplinary team and collaborating with customers to deliver innovative solutions. The role requires a strong understanding of system engineering principles and a proven track record of delivering complex projects on time and to a high standard.
Required Skills
Job Description
Location: Paço de Arcos - Q45, Portugal
For more than 35 years, Thales acts in Portugal for global Defence 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.
As a System Engineer, you will work within an international and multidisciplinary team on the specification, verification, validation and qualification of solutions for customers. The Air Mobility Solutions (AMS) team contributes to the specification, testing and qualification of TopSky solutions, covering the full lifecycle from concept definition to system integration and qualification.
Responsibilities:
• Communicate with stakeholders to understand system objectives and translate customer needs into engineering requirements;
• Create infrastructure engineering definitions/drawings and liaise with Project Management and Design Authorities to ensure TopSky deployments meet timelines and standards;
• Provide operational and functional support to end-users and internal engineering teams, resolving technical inquiries;
• Write test cases to verify system requirements and track/validate PCR corrective actions with multidisciplinary teams;
• Perform validation tests during Factory Acceptance Tests (FAT) and Site Acceptance Tests (SAT) in coordination with customer representatives;
• Produce detailed test reports and brief the Management Team and external customers on results.
Requirements:
• Degree in Engineering (e.g. Computer Science, Electronics, Telecommunications);
• Experience in system engineering, verification and validation of complex systems (preferably on the air traffic control domain);
• Experience in preparation and executing tests: documentation, testing, problem analysis, defect reports, etc.;
• Prior experience in Air Traffic Control domain is a plus;
• Very good written and oral proficiency in English;
• Availability to travel abroad for periods up to 1 month – each 2 or 3 months.
The Group invests more than €4 billion per year in Research & Development in key areas, particularly for critical environments, such as Artificial Intelligence, cybersecurity, quantum and cloud technologies.
In 2024, the Group generated sales of €20.6 billion.
For our more than 83,000 employees in 68 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.
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 Tiago Vital is looking forward to your online application on our Career portal.
Tiago Vital – Talent Acquisition Partner
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*Human Intelligence