CTO Cofounder - PreSeed PropTech arbeitnow Founders Factory

Co-Founder & CTO

Founders Factory builds and funds new startups together with exceptional founders and leading companies. Our founding team brings its own exit and IPO experience, and since 2015 our 300+ portfolio companies have raised more than USD 900m in follow-on funding.

For Nua Materials, we are looking for a technical Co-Founder & CTO to build a scalable product and company alongside the existing founder, starting from a validated concept.

New and more sustainable building materials already exist, yet many struggle to make the leap into real construction projects. For construction companies, housing providers and developers, information and evidence are fragmented, products are difficult to compare, and adopting unfamiliar materials creates additional technical, commercial and organisational risk. At the same time, regulatory pressure is increasing: key provisions of the revised EU Construction Products Regulation have applied since 2026, and Digital Product Passports for construction products are on the way.

Many existing solutions focus on documentation, evidence and certification — not on the actual selection and purchasing decision. This is where Nua Materials comes in. A core component is the Nua Score, which already exists in an initial version. Conversations with manufacturers, construction companies, developers and asset owners have confirmed the need and shown interest in pilots.

• As Co-Founder & CTO, you will own product and technology in the early stage.
• Define the critical workflows with users and build the first usable product.
• Develop the Nua Score and build a robust data and system architecture across multiple external data sources.
• Decide what to build now, what to add later, what to automate — and what deliberately should not become part of the product.
• Work directly with early customers and partners, then build a small product and engineering team over time.
• The first months will be highly hands-on: we are looking for a technical founder who builds personally and helps shape the product, not a CTO who starts by delegating.

• Product development: You can turn an ambiguous customer problem into a clear, testable product approach and build it.
• Data-driven products: You have experience with data-heavy platforms, scoring or comparison systems and can talk concretely about failure modes, data-quality issues and validation decisions you have encountered.
• Technical range: You are strong in backend and data architecture and capable enough on the frontend to ship early product versions yourself.
• Trust in B2B: You build transparent, credible systems that can stand up to risk-sensitive enterprise customers, long decision cycles and demanding evidence requirements.
• Founder mindset and market understanding: You have founded before, were one of the first technical hires at a startup, or have taken on comparable ownership. Business-fluent German, professional English and experience in the DACH market are important.

• Experience in Con Tech or Prop Tech
• Background in civil engineering or materials science, ideally with LCA/EPD experience
• Experience with comparison platforms or marketplaces

• Capital and founder funding for the build phase
• Hands‑on support from Founders Factory across product, data, growth, fundraising, legal, finance and talent — building on existing market, customer and product work
• Access to early prospective customers and partners across construction and housing, as well as our international network

This overview was written from the original listing to help you understand the role. Always confirm the specifics on the employer’s application page.