63 open roles in Köln — curated on baito, at organisations with a clear societal or environmental purpose.

Drees & Sommer SE

Drees & Sommer SE

Government
The Rheinische Friedrich-Wilhelms-Universität Bonn is one of Germany's leading research-based universities and is internationally recognized as a University of Excellence with eight clusters of excellence. Founded in 1818, the institution combines high-quality education with groundbreaking research in fields such as AI, medicine, and sustainability. With approximately 31,000 students and a strong commitment to diversity and equal opportunity, the university plays a vital role in addressing global challenges.

Consultancy
Drees und Sommer SE is a partner-led consulting company established in 1970, providing holistic solutions and implementation services across the Real Estate, Infrastructure, and Industry sectors. With over 6,500 employees at more than 70 locations worldwide, the organization is dedicated to creating a sustainable and livable future. Recognized as a pioneer in sustainability and digitalization, Drees und Sommer SE integrates economy, ecology, and functionality into all projects to deliver future-oriented and integrated solutions.

Private Sector
einhundert specializes in sustainable energy concepts for the real estate industry, driving the energy transition in housing. Since 2017, the organization has focused on enabling CO₂-free, livable housing through integrated energy solutions like 100.Strom, 100.Wärme, and 100.Kombi. They provide comprehensive services from a single source, benefiting property owners and tenants. A market leader in German tenant electricity, einhundert serves over 20,000 households and more than 250 housing industry customers, demonstrating significant measurable impact.

Private Sector
Next Kraftwerke operates one of Europe's largest Virtual Power Plants (VPPs) and is a key player in the global energy transformation. The organization aggregates thousands of distributed energy resources, including producers, consumers, and storage units, to intelligently control their feed-in and consumption. This approach allows for the valorization of power and flexibility across different energy markets, supporting the integration of renewable energies. Headquartered in Cologne, Next Kraftwerke is active in several European countries and employs between 201 and 500 people. Founded in 2009, the company offers innovative products like Power Trading and the Next Box 4.0.

Government
ARENA2036 e.V. is Germany's national research and technology center for aeronautics, space, energy, transport, security, defense, and digitalization. With approximately 12,000 employees across 51 institutes and 39 locations, it conducts extensive research and development. The organization also serves as the German Space Agency and manages national and international funding programs. Its mission is to explore Earth and space, developing technologies for a sustainable future and transferring knowledge to society.

Startup
Apheris is a Berlin-based technology company focused on advancing drug discovery through secure, federated data networks. By enabling pharmaceutical organizations to train and evaluate AI models on proprietary data without compromising privacy, the company supports critical R&D processes. Apheris provides enterprise-grade AI applications, such as the Apheris Gateway and ApherisFold, which allow teams to integrate advanced models directly into existing workflows while maintaining full data sovereignty.

Private Sector
PAUL Tech AG is a pioneer in the heating transition, focusing on decarbonizing existing residential properties in Germany. Using its AI-driven "PAUL Net Zero" technology, the organization provides green heat as a digital service to reduce CO₂ emissions and make buildings more economical. PAUL takes responsibility for the operation, efficiency, and CO₂ reduction of heating systems, enabling property owners to achieve their climate goals. The technology is developed and manufactured in Ladenburg, Germany. PAUL already manages 160,000 residential units and employs 168 staff members.
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