Join Capital

Join Capital is a Berlin-based venture capital firm that backs early-stage and growth companies across Europe, focusing on seed to Series A investments in Industry 4.0, enterprise software, and technology-enabled industrial sectors. It pursues minority stakes in companies that redesign operations, manufacturing, and supply chains through smart machinery, robotics, data analytics, and cloud-based systems. Portfolio companies typically develop machine learning, AI, IoT, and sensor-enabled solutions that improve production efficiency and global operations. Join Capital seeks products with strong product-market fit and scalable business models, investing in technologies that address core business functions such as operations, manufacturing, and software development.

Jan Borgstaedt

Founding Partner

Jan Borgstädt

Partner

Quentin Calleja

Analyst

Wanjiru Chabeda

Associate

Federico Fini

Associate

Julia Flaig

Principal

Leander Gruss

Analyst

Oliver Hehl

Partner

Hristo Odiseev

Technology Partner

Jana Scharfschwerdt

Finance Partner

Tobias P. Schirmer

Partner

Sebastian v. Ribbentrop

Partner

Past deals in Simulation

Generative Engineering

Pre Seed Round in 2023
Generative Engineering is a pioneering deep-tech startup that operates a cutting-edge platform designed to augment existing engineering tools. This platform automates and accelerates the engineering process by generating, testing, and simulating thousands of design iterations simultaneously, significantly reducing product development time. It covers the entire engineering workflow, from individual part design to complex system integration, and enables innovative designs across various real-world products. Moreover, its powerful, code-first integration framework allows engineers to seamlessly incorporate and use their existing tools alongside the platform's out-of-the-box integrations, further enhancing efficiency and reducing costs.

Frenetic

Series A in 2023
Frenetic specializes in the design and optimization of magnetic components, leveraging expertise in power electronics alongside advanced simulation tools and artificial intelligence. Its platform facilitates the efficient transition from concept to production for engineers, providing accurate modeling for power converter design that accommodates various topologies and incorporates real-world physics-based optimization. The Frenetic Simulator allows for the selection of core materials, customization of losses, analysis of winding strategies, and integration of thermal modeling with high accuracy. Additionally, automated reporting enhances validation processes by delivering detailed breakdowns of losses, specifications, and bills of materials. Frenetic also connects engineers with leading manufacturers, thereby streamlining the design-to-production process. With a focus on high-frequency applications and energy-efficient solutions, the platform is continually evolving to meet the demands of next-generation power architectures.

Valispace

Seed Round in 2022
Valispace GmbH, founded in 2015 and based in Bremen, Germany, develops a browser-based engineering software platform designed to enhance productivity in the development of complex hardware products such as satellites and rockets. The platform serves as a comprehensive Engineering Information Management System, facilitating team collaboration across various aspects of the engineering lifecycle, including requirements management, data-driven functional design, and detailed systems design. By providing tools for automated verification and live documentation, Valispace allows companies to transition from traditional waterfall methods to more agile hardware development approaches. Its software enables full traceability and offers a centralized location for managing test procedures and engineering data, ultimately helping clients reduce development time, improve quality, and lower costs across their projects.

Silico

Seed Round in 2022
Silico provides a no-code platform for business process simulation that creates a digital twin of the enterprise by mapping, analyzing, and visualizing interdependencies across operating areas. It enables users to perform data analysis, assemble outputs into management dashboards, and publish them as internal web applications to reflect the organization dynamically.

Frenetic

Venture Round in 2021
Frenetic specializes in the design and optimization of magnetic components, leveraging expertise in power electronics alongside advanced simulation tools and artificial intelligence. Its platform facilitates the efficient transition from concept to production for engineers, providing accurate modeling for power converter design that accommodates various topologies and incorporates real-world physics-based optimization. The Frenetic Simulator allows for the selection of core materials, customization of losses, analysis of winding strategies, and integration of thermal modeling with high accuracy. Additionally, automated reporting enhances validation processes by delivering detailed breakdowns of losses, specifications, and bills of materials. Frenetic also connects engineers with leading manufacturers, thereby streamlining the design-to-production process. With a focus on high-frequency applications and energy-efficient solutions, the platform is continually evolving to meet the demands of next-generation power architectures.

RheoCube

Venture Round in 2021
RheoCube is a cloud-based simulation platform specializing in complex fluids, aimed at revolutionizing research and development processes for clients in sectors such as food, coatings, homecare, personal care, and specialty chemicals. Developed by Electric Ant Lab and founded by Dr. Eric Lorenz, an expert in computational physics, RheoCube provides a user-friendly alternative to traditional trial-and-error methods often employed in product prototyping and applied material research. The platform facilitates digital experimentation, allowing R&D scientists to conduct detailed, scientifically validated simulations that replace costly synthesis and laboratory experiments. This innovative approach enables companies to streamline their development processes, enhancing efficiency and reducing reliance on physical lab work.

Valispace

Seed Round in 2020
Valispace GmbH, founded in 2015 and based in Bremen, Germany, develops a browser-based engineering software platform designed to enhance productivity in the development of complex hardware products such as satellites and rockets. The platform serves as a comprehensive Engineering Information Management System, facilitating team collaboration across various aspects of the engineering lifecycle, including requirements management, data-driven functional design, and detailed systems design. By providing tools for automated verification and live documentation, Valispace allows companies to transition from traditional waterfall methods to more agile hardware development approaches. Its software enables full traceability and offers a centralized location for managing test procedures and engineering data, ultimately helping clients reduce development time, improve quality, and lower costs across their projects.
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