Join Capital

Join Capital is a venture capital investment firm based in Berlin, Germany, founded in 2015. The firm specializes in early-stage investments, focusing primarily on Seed and Series A rounds within the Industry 4.0 and enterprise technology sectors. It targets innovative companies that are addressing real customer challenges and have achieved product-market fit. Join Capital's portfolio includes businesses that enhance manufacturing processes through smart machinery, robotics, and advanced algorithms for managing global production systems. The firm invests in technologies related to core business functions such as operations, data analytics, supply chain, and software development, with an emphasis on machine learning, robotics, cloud computing, IoT, and smart sensors.

Jan Borgstaedt

Managing Partner

Daniel Carew

Partner - Defence and Strategic Technology and Investor

Federico Fini

Associate

Julia Flaig

Principal

Tom Hibbard

Principal

Philippe von Klitzing

Investment Analyst

Sebastian Ribbentrop

Managing Partner

Tobias Schirmer

Managing Partner

Past deals in Electronics

CamGraPhIC

Series A in 2025
CamGraPhIC is a integrated photonics platform supports the ever-increasing data traffic demand with low-cost, and low-power consumption electro-optical engines.They provides compatible with many photonic materials, such as silicon and silicon nitride, and can be synthetised and integrated through scalable wafer-level processes. They supports the ever-increasing data traffic demand with low-cost, and low-power consumption electro-optical engines.

Frenetic

Series A in 2023
Frenetic specializes in the design and optimization of magnetic components, leveraging power electronics expertise alongside advanced simulation tools and artificial intelligence. The company's platform facilitates a streamlined transition from concept to production for engineers, offering precise modeling capabilities for power converter designs across various topologies. The Frenetic Simulator utilizes real-world physics-based optimization, allowing for customization of core materials, loss analysis, and integration of thermal modeling with high accuracy. Automated reporting features provide detailed insights into losses, specifications, and bill of materials, enhancing validation processes. Additionally, Frenetic connects engineers with leading manufacturers, ensuring effective design-to-production workflows. The platform is continually updated to address the demands of high-frequency applications, energy efficiency, and next-generation power architectures.

Frenetic

Venture Round in 2021
Frenetic specializes in the design and optimization of magnetic components, leveraging power electronics expertise alongside advanced simulation tools and artificial intelligence. The company's platform facilitates a streamlined transition from concept to production for engineers, offering precise modeling capabilities for power converter designs across various topologies. The Frenetic Simulator utilizes real-world physics-based optimization, allowing for customization of core materials, loss analysis, and integration of thermal modeling with high accuracy. Automated reporting features provide detailed insights into losses, specifications, and bill of materials, enhancing validation processes. Additionally, Frenetic connects engineers with leading manufacturers, ensuring effective design-to-production workflows. The platform is continually updated to address the demands of high-frequency applications, energy efficiency, and next-generation power architectures.

Optics11

Optics11 B.V., founded in 2011 and headquartered in Amsterdam, Netherlands, specializes in the development and marketing of advanced optical fiber sensing systems. The company caters primarily to the energy and defense sectors, providing innovative solutions that enhance safety and operational efficiency. Its product portfolio includes state-of-the-art technologies such as the OTADES thin line array hydrophone system, which delivers high precision in underwater acoustic applications. Optics11's offerings also encompass structural health monitoring for critical infrastructures like bridges and tunnels, along with non-destructive testing and research capabilities. The company employs approximately 80 specialists and maintains a research and development center in Dublin, reflecting its commitment to innovation and collaboration within the defense industry. Optics11 is recognized as a leader in fiber optic acoustic emission sensing systems, ensuring reliable measurements in demanding environments and reinforcing its role as a key player in safeguarding vital assets.
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