Software Engineer – Railway Systems, PLC

Critical Software

Software Engineer developing PLC-based software for safety-critical railway applications. Collaborating with cross-functional teams to ensure quality standards are met throughout the development process.

Posted 5/16/2026full-timeLisbon • 🇵🇹 PortugalJuniorMid-LevelWebsite

About the role

Key responsibilities & impact

Design, develop, and validate PLC-based software for safety-critical railway applications
Apply railway domain knowledge across the full lifecycle of train control systems
Collaborate with cross-functional teams (Systems, V&V, Safety) to ensure software quality
Produce and review technical documentation including Software Design Specifications and safety cases

Requirements

What you’ll need

Minimum 2 years of experience in the railway domain
Hands-on PLC programming experience
Proven track record delivering software up to SIL2 (EN 50657 or equivalent)
Strong written and verbal communication in English; French is a nice to have

Benefits

Comp & perks

Health insurance
Sabbatical programme
Flexible working hours
Continuous learning opportunities
Internal mobility

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PLC programmingsoftware developmentsoftware validationsoftware design specificationssafety cases

Soft Skills

communicationcollaboration

Certifications

SIL2EN 50657