ISM Software Architect

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ISM Software Architect

Date: 29 Jul 2026

Location: Madrid, ES

Company: Alstom

At Alstom, we build what millions depend on daily - rail transportation systems that can’t afford to fail. We’re more than 80,000 people worldwide creating the industry’s most diverse portfolio: high-speed trains, metros, trams, signalling systems and digital mobility solutions.

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You’ll work alongside people who take ownership, collaborate across functions, and contribute to systems that keep cities moving every day.

Your role, your impact

• Contribute to ISM specifications and architecture with Program Development Managers, Design Authority, and System Engineers
• Define software requirements, including functional, operational, interface, performance, safety, and cybersecurity aspects
• Ensure requirements are testable and traceable across the development lifecycle
• Design software architecture, components, interfaces, and dynamic system behaviour
• Validate technical solutions through simulations and prototypes
• Lead technical decisions: tools, methodologies (e.g., UML), languages, coding standards
• Support integration (software/software and hardware/software) and verification activities
• Contribute to system validation, testing, and long-term maintenance
• Monitor technology evolution and promote reusable solutions and standardization
• Ensure application of internal processes and contribute to continuous improvement

You’ll work with multidisciplinary, international teams across engineering and product development - solving complex challenges in rail security and digital systems.

What you bring

• Engineering degree
• Strong programming experience in C# .NET
• Knowledge of security systems (CCTV, streaming protocols, SIP, VoIP, Public Address, etc.)
• Strong communication skills in English (written and spoken)
• Ability to collaborate with distributed and cross-functional teams
• Agile mindset with international orientation

How success is measured

• Quality and robustness of software architecture and design
• Compliance with requirements, standards, and processes
• Effectiveness in collaboration and integration activitiesContribution to innovation, reuse, and continuous improvement

Alstom, a great place to grow

• Enjoy stability, challenges and a long-term career in a future-proof industry
• Collaborate with transversal teams and supportive colleagues
• Contribute to innovative and impactful projects in rail cybersecurity and signalling
• Work in an Agile and international environment
• Develop your career across functions and countries
• Access continuous learning and development opportunities
• Benefit from a competitive compensation and social benefits package

Here, the systems you design move cities. When the train runs safely and efficiently, your work makes a real impact — and that legacy stays with you.

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