System Engineer

Thales is hiring a System Engineer. Level rates it ; you can apply on Level.

AI in this role

System Engineer to work on the specification, verification, and validation of Air Mobility Solutions systems at Thales.

system-engineeringverification-and-validationair-traffic-controlrequirements-engineering

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, and contribute to the development of Air Mobility Solutions (AMS) systems.

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 €4.5 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.

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

#LI-TV1
#LI-HYBRID

*Human Intelligence

How we rate this

System Engineer at Thales rates 0 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.

Classification

Little AI. AI is not part of the work.

●●●● Builds AI80 to 100
●●●○ Works on AI60 to 79
●●○○ Uses AI40 to 59
●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Open the description and count.

Key facts

System Engineer is an open job at Thales.
Level rates this role AI Level 1 of 4: Little AI.
The role is based in Paço de Arcos - Q45.
The job was posted on September 29, 2026.
Seniority: mid.
Applications are handled by Thales. Apply on Thales

Prepare for this job

A free preview built only from this posting: what it asks for, what you could be asked in an interview, and how to adjust your resume.

Skills and AI tools this role asks for

System EngineeringVerification And ValidationAir Traffic ControlRequirements Engineering

Questions you could be asked

Tell me about a project where system engineering was part of your work. What did you do?
Tell me about a project where verification and validation was part of your work. What did you do?
Tell me about a project where air traffic control was part of your work. What did you do?
Tell me about a project where requirements engineering was part of your work. What did you do?

Adapt your resume

List these exact terms on your resume: System Engineering, Verification And Validation, Air Traffic Control, and Requirements Engineering. An applicant tracking system matches the wording, not the idea.
Attach one line of real, concrete experience to at least one of them — a tool named with nothing behind it rarely survives a human read.

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