System Testing Engineer

Stadler Digital Labs; Coimbra; Hybrid; EUR 42,000 - 64,000; Full time

Benefits offered by this job

Hybrid work model

Career growth

Performance-based rewards

Modern offices

Job summary

Stadler Digital Labs is seeking a System Testing Engineer to advance CBTC, ATP, ATO, and ATS testing. You will develop test cases, scripts, and maintain labs to ensure high-quality testing aligned with industry standards.

You bring a degree in CS/IT/Engineering, strong rail signaling experience, Python scripting, and a proactive, team-focused mindset. Hybrid work in Coimbra or Lisbon is offered with growth opportunities.

Qualifications

• Degree in Computer Science, IT, Engineering, or equivalent experience.
• Rail signaling system experience (CBTC, ERTMS, ATO, ATS) preferred.
• Experience testing complex or safety-critical systems.
• ISTQB Foundation Level certificate preferred.

Responsibilities

• Analyze system and hardware requirements from a testing perspective.
• Write test cases and scripts for CBTC and subsystems (ATP, ATO, ATS).
• Maintain labs and test equipment, update releases, and implement new tools.
• Execute test scripts in simulated or lab environments and report results.
• Collaborate with Requirements, Development, Safety, Verification & Validation.

Skills

Python scripting

English fluent

Team player

Education

Bachelor's degree in Computer Science / Information Technology / Engineering

Tools

IBM ERM

SVN

Job description

The future of rail isn't just about movement, it's about intelligence, security, and connection. We unite rail expertise with digital innovation to create smarter, safer, and more sustainable transportation solutions. Technology here speaks with purpose: accelerating digitalization, embedding cybersecurity, and shaping the next era of rail.

Behind every breakthrough are people, their talent, creativity, and drive to push boundaries. Together, we're building confidence, resilience, and a new standard for connected mobility powered by innovation.

This position is for Stadler Digital Labs, a joint venture between Stadler Rail and Critical Software serving as the digital competence center for the Stadler Group.

Check-out the website: https://stadlerdigitallabs.com

Could you be the System Testing Engineer that we've been looking for?

Key Responsibilities:

• Analyze system, subsystem, hardware requirements from testing perspective
• Write test cases and test scripts for testing system (CBTC) and subsystem (ATP, ATO, ATS) based on customer and system requirements as well as for system and subsystem integrations based on architecture and inter-faces in a manual or automatic way
• Identify, select simulators and other test equipment (i.e. Lab)
• Maintain labs and tools equipment (i.e. Update release, Lab red line, implementing new tool (Sw or Hw) to support testing)
• Execute test scripts in simulated or laboratory environment
• Record test results and write test reports
• Analyze and report defects, provide initial system analysis
• Collaborate closely with the Requirements & Development & Safety & Verification & Validation Engineering
• Contribute to improvements of testing processes, tools and methods by providing feedback, making proposals or implementing specific improvements
• Ensuring that all testing activities are performed according to EN standards (50126, 501716) or other stand-ards used in Railway, Signalling or Testing
• Prepare and Participate to audits (i.e. update processes according to standards)
• Other System Testing activities of the Division Signalling (i.e. ATOoverETCS, CWS)

Which brings us to you, the person with:

• Degree in Computer Science, Information Technology, Business Informatics, Engineering, or comparable professional experience.
• Professional experience in railway signalling systems such as CBTC, ERTMS, Conventional Interlocking, ATO, Collision Warning Systems
• Experience in system testing of complex and/or safety-critical systems
• Knowledge of tools brings an advantage such as IBM (ERM, EWM, ETM), SVN
• Experience with Python scripting language (strict requirement), PLC programming language is an advantage.
• Testing experience in embedded systems or systems with SIL 1,2,3,4 (strict requirement) and a good under-standing of the EN50716:2023 is preferred
• ISTQB (International Software Qualification Testing) Foundation Level certificate preferred is an advantage.
• Interested in establishing new solutions and applying new technologies and methods
• Proactive mindset and strong team-player skills
• Fluent in English is mandatory; the German language is an advantage

What we provide:

• Work that fits your life, not the other way around
• Offices designed to make you feel like you belong
• A team that knows how to work hard, but also how to have fun
• Pay that makes you feel valued, plus performance-based rewards
• Your growth is our priority: training, support, and opportunities!

Join us and help us to improve the efficiency and sustainability of rail mobility.

Location: Hybrid in Coimbra or Lisbon.