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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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📌 ISM Software Architect (Madrid)
🏢 Alstom Gruppe
📍 Madrid