We build dependable systems, amplified by AI

Since 1998, we've been building software and systems for safety, mission and business-critical applications across the world's most demanding industries. AI is now in the engine room.

The case

Why Critical?

Because when the system cannot fail, you need engineers who will stand behind the outcome.

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Since 1998

28 years of safety-critical software across nine industries. Clients include NASA, ESA, Airbus, BMW, Saab and Alstom.

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Engineering Excellence

Obsession for quality, across the world's most demanding industries. It is not a claim. It is how we are built.

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CMMI Level 5

One of very few engineering firms in the world to hold it. Independently audited, not self-declared.

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Amplified by AI

AI is the first tool our engineers reach for, on every project, for every client. How we work, not what we sell.

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Independent

No AI products. No platforms to sell. That independence is what makes our V&V work trusted by certifying authorities.

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Built to Last

Airbus, BMW and Stadler didn't just hire us. They built joint ventures with us.

Success Stories

Solving complex challenges, together.

Working side by side with our customers and partners, we design, build and deliver software and systems that address real-world challenges in safety-, mission- and business-critical environments.

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Automotive
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Critical TechWorks | A Joint-Venture With the BMW Group
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Aviation
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Critical FlyTech | A Joint-Venture with Airbus
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Railway
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Stadler Digital Labs | A Joint-Venture with Stadler
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Industries

Where our work makes a difference

From land, sea and sky — and beyond — we work side by side with our customers and partners to help transform industries where safety, reliability and performance matter most.

01
Automotive

We design, build and validate safety-critical automotive software and systems across the full vehicle lifecycle, supporting OEMs and partners in complex, software-defined environments.

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Aviation

Avionics software development and certification support for defence and commercial aviation — DO-178C, DO-254, ARP-4754A compliant. Trusted by leading aerospace OEMs.

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Defense and Security

Discover defence and homeland security software solutions supporting command and control, safety, and mission-critical operations. Learn how Critical Software enables secure, reliable systems for complex defence environments.

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Energy

Explore energy software solutions for smart grids, EV charging, metering, and digital energy systems. Discover how Critical Software supports the transition to a smarter, more sustainable energy future.

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Finance

Critical Software helps financial institutions modernise legacy systems, accelerate digital transformation, and build resilient, compliant platforms. Explore our financial services solutions.

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Medical Devices

We build, test, and certify software for medical device manufacturers across the full development lifecycle — where safety standards aren't a checkbox, they're the foundation.

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Railway

Railway engineering solutions covering systems engineering, validation, RAMS, cybersecurity, embedded software, and AI for safety-critical rail systems.

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Space

High-reliability software engineering for space and scientific systems, supporting mission-critical development, verification, validation, and long-term operation.

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Start your journey with us

An award-winning place to work, sharing the company’s success with our employees and taking a transparent approach to performance and growth.

  •  • Portugal, PT

    Senior Product Manager – Rail Products

  •  • Munich, DE

    Principal Engineer

  •  • Portugal

    Proactive Applications

  •  • Portugal

    Senior Product Manager – Space

  •  • Munich, DE

    Werkstudent (m/w/d) und Junior Cybersecurity Talent

Artificial Intelligence

Critical AI

We ship faster, do better work, and solve harder problems than we could before. AI is not what we sell. It is how we work.
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Newsroom

Let us keep you updated

The latest news, press releases, articles, blogs from the world of Critical Software.

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When the Digital Euro Account Number Isn't an IBAN

The Digital Euro Account Number looks like an IBAN, but it doesn't tell you who holds the account. Rui Duarte Silva unpacks what that breaks in core banking integration.

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NewsMedical devices

Critical Software at Sword AI Summit 2026: Intelligence for a Deterministic World

Sérgio Pereira, Cluster Technology Director at Critical Software, takes the stage at Sword AI Summit 2026 in Porto to explain what it takes for AI agents to earn trust in safety-critical engineering.

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BlogEnergy

What CIGRE Paris 2026 Revealed About the Future of Energy

Pedro Cordeiro spent three days at CIGRE Paris 2026. Here's what he learned about grid digitalization, cybersecurity, and where the energy industry is heading.

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News

Critical Software Joins the AI Deployment Gap Initiative as a Founding Signatory

Critical Software has joined the AI Deployment Gap Initiative as a founding signatory — a coalition defining the engineering principles needed to deploy AI that is deterministic, governable, secure, and certifiable in the systems where failure isn't an option.

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BlogEnergy

Security's Real Breaking Point Isn't the Firewall

Ask where security breaks down and most organizations point to a missing patch. Pedro Cordeiro, Principal Engineer for Energy at Critical Software, points to the seams: integration boundaries nobody owns, inherited components nobody reviews, and configuration drift nobody notices. A look at resilience as architecture rather than a feature.

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Blog

Why L4, and Why Now?

AI is reshaping how software gets built — and how fast. Technology Director Patrick Machado reflects on why Critical Software is targeting L4 AI automation by end of 2026, what that means in practice, and why the companies that thrive won't be the smartest ones, but the fastest to adapt.

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BlogEnergy

Industry Voices: Why the UK's Energy Transition Will Live or Die on Data Standardization

The UK's path to a low-carbon grid depends on more than new wind turbines and battery storage — it depends on trusting the data those assets produce. LCCC's Chris Jones explains why standardization, not more bespoke integration, will determine whether the energy transition scales.

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BlogRailway

Industry Voices: Railway Certified Doesn't Mean Safe

Passing certification and being genuinely safe are not the same thing. CERTIFER Branch Director Lucas Sanchez explains the systemic blind spots that even well-intentioned railway suppliers miss — and why the arrival of AI is about to make those gaps much harder to hide.<br>