Optimuse raises €4.0M to scale AI building simulation platform

Vienna, Austria, October 2, 2025

News Summary

Vienna-based deep-tech startup Optimuse closed a €4.0 million Seed round to expand its AI-driven building design and simulation platform. Led by seed + speed Ventures and Blum Ventures with participation from Matterwave Ventures and Gründungsfonds, the funding will accelerate international growth and broaden distribution. Optimuse combines machine learning and physics-based modelling to create digital twins from existing plans, simulate heating, cooling and ventilation systems, and compare thousands of design variants. The company says the platform can speed preliminary engineering, reduce construction costs through better system sizing, and deliver significant emissions savings.

Vienna deep-tech startup Optimuse raises €4.0 million Seed to scale AI-driven building-simulation platform

Lead: funding, purpose and product

Vienna-based deep-tech startup Optimuse (Optimuse GmbH) has closed a Seed funding round totaling €4.0 million in October 2025. The capital will be used to accelerate international growth and expand distribution of its AI-driven building design / building simulation and optimisation platform, which the company positions as a tool to make construction projects smarter, cheaper, and greener.

At a glance

• Company name: Optimuse (Optimuse GmbH).
• Company base / headquarters: Vienna, Austria.
• Company type: deep-tech startup.
• Product: AI-driven building design / building simulation and optimisation platform.
• Funding raised: €4.0 million.
• Round: Seed.
• Funding date / reported date: October 2025.
• Lead investors: seed + speed Ventures and Blum Ventures.
• Additional / participating investors: Matterwave Ventures and Gründungsfonds.
• Company website: https://www.optimuse.com/
• Founding year: 2021.
• Founders: Dominik Pezzei, Fabian Pitscheider, and Felix Maximilian Hofer.
• Dominik Pezzei’s role: Managing Director and Co‑founder.
• Company team size: currently employs around 20 people.

Why the round matters

The investment will support the company’s push into European and global markets and back product development and go‑to‑market activities for customers in residential, commercial, and industrial projects. Optimuse says the platform targets early design and renovation phases, where decisions can lock in years of operational expense and carbon emissions.

What the product does

Optimuse combines building physics expertise with machine learning to create realistic digital building models (digital twins) from existing plans. The platform runs physics‑based simulations of heating, cooling, ventilation, and building envelope systems early in the planning process and compares thousands of design/engineering variants to recommend optimized solutions for new construction and renovation projects.

Claimed benefits and use cases

The company reports preliminary engineering can be made 70% faster using its approach, that construction costs can be cut by 10% through better sizing of systems, and that projects can achieve up to 20% additional emissions savings. Typical use cases include modelling modernisation paths for renovation projects such as heating replacement and conversions from gas to heat pumps, and optimising system sizing on new builds to reduce investment and operating costs.

Market context and differentiation

Buildings account for nearly 40% of global energy use, a factor frequently cited to explain the market opportunity for tools that reduce waste and emissions. Optimuse focuses on deep, physics‑based energy modelling and transparent simulation of building systems, positioning the product as different from generalised construction AI platforms that concentrate on project management or scheduling automation. The startup targets developers, builders, and planners that need early clarity on trade‑offs between initial investment, operational costs, and CO₂ savings.

Investors and rationale

The round was led by seed + speed Ventures, a Berlin‑based venture firm focused on early‑stage B2B software in the DACH region, and Blum Ventures, the corporate venture arm of the Austrian industrial company Blum Group. Additional participants include Matterwave Ventures and Gründungsfonds. The funding partners highlighted the combination of applied simulation technology and practical engineering value as the main investment rationale, and signalled support for the company’s internationalisation plans.

Team and origins

Founded in 2021 by Dominik Pezzei, Fabian Pitscheider, and Felix Maximilian Hofer, the company brings together a roughly 20-person team with skills across construction, building physics, building technology, and AI. Management and investor representatives emphasise the need for tools that quickly compare technical and economic feasibility in early engineering phases as regulations tighten.

What comes next

Optimuse will use the fresh capital to scale sales and support, grow distribution across Europe and beyond, and further develop its platform to cover a broader range of building system scenarios. The company continues to target applications that yield cost savings, lower emissions, and faster planning cycles for building owners, planners, and operators.

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Key features

Deeper Dive: News & Info About This Topic

Additional Resources

• TheSaaSNews: Optimuse raises €4 million in Seed round
• Wikipedia: Optimuse
• EU-Startups: Vienna-based Optimuse raises €4M Seed
• Google Search: Optimuse AI building simulation
• TechFundingNews: Optimuse seed funding
• Google Scholar: building energy modelling simulation AI
• EU-Startups: Propcorn secures €600k Pre-Seed
• Encyclopedia Britannica: proptech
• EU-Startups: Silana raises €1.5M for robotics
• Google News: Silana robotics clothing production

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