ISM Software Architect

ISM Software Architect

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.

More than a job: a mission

We’re looking for an ISM Software Architect to design and develop software architectures that support critical rail systems and ensure safe, secure, and reliable mobility.

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 activities
• Contribution 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.