Polymer Chemist / Plastics Processing Engineer (f/m/d) Compounding & Applications in Leipzig

Your mission

As part of our R&D team, you will be the technical backbone of our polymer processing team, transforming our novel, sustainable polymers into high-performance compounds ready for scale-up.

• Compounding & Formulation: Develop and optimize polymer formulations, focusing on additives, masterbatches and compounding strategies tailored to our new materials.
• Equipment Operation: Hands-on setup, operation, and troubleshooting of polymer processing equipment, including lab kneaders, single/twin-screw extruders, injection moulding machines and film blowing lines.
• Application Development: Drive material development across key application fields (e.g. injection moulding, film processing, fibre spinning or monofilaments for 3D printing). You don't need to be a deep expert in all of these fields, but you will help define key processing parameters and guidelines for target applications.
• Data-Driven R&D: Analyze and interpret mechanical, thermal and rheological properties (MFI, capillary rheometry, DSC, TAN/acid value, tensile testing) to derive robust structure-property relationships.

Your mission

As part of our R&D team, you will be the technical backbone of our polymer processing team, transforming our novel, sustainable polymers into high-performance compounds ready for scale-up.

• Compounding & Formulation: Develop and optimize polymer formulations, focusing on additives, masterbatches and compounding strategies tailored to our new materials.
• Equipment Operation: Hands-on setup, operation, and troubleshooting of polymer processing equipment, including lab kneaders, single/twin-screw extruders, injection moulding machines and film blowing lines.
• Application Development: Drive material development across key application fields (e.g. injection moulding, film processing, fibre spinning or monofilaments for 3D printing). You don't need to be a deep expert in all of these fields, but you will help define key processing parameters and guidelines for target applications.
• Data-Driven R&D: Analyze and interpret mechanical, thermal and rheological properties (MFI, capillary rheometry, DSC, TAN/acid value, tensile testing) to derive robust structure-property relationships.

Your profile

• Education: Degree (B.Sc./M.Sc.) in Plastics Engineering, Polymer Science, Materials Science or a related field. Alternatively, completed vocational training as a Plastics Technologist or Technician with extensive relevant industry experience.
• Experience: Proven senior-level of professional experience in an industrial laboratory, pilot plant, or production environment.
• Technical Expertise: Deep, hands-on experience in polymer processing (compounding, extrusion, injection moulding) and formulating masterbatches/additives.
• Analytical Mindset: Confident handling of thermal and rheological analysis methods.
• Working Style: Precise, well-organized, and reliable even in the dynamic environment of a growing startup. You bring a strong hands-on mentality and structure your work efficiently.
• Language: Comfortable communicating in English in day-to-day operations. Technical competence matters more to us than perfect grammar.

Why us?

• Pioneers in Next-Gen-Plastics – help redesign plastics for a truly circular economy.
• Mission & Values – curiosity, transparency and responsibility guide us daily.
• Startup Mentality – flat hierarchies, agile work and regular workshops.
• Fast Growth – steep learning curves, regular growth talks and plenty of room to scale your role with the company.
• Well-being Perks – Hansefit membership and fresh fruit boost your overall health and well-being.
• Team Spirit – interdisciplinary crew that challenges norms, enjoys regular team events and drives real innovation.
• Leipzig Hub – thrive in an emerging tech hotspot.
• Code of Conduct – integrity, fairness and inclusivity are non-negotiable.

Contact

If you have any questions about working at aevoloop or our vacancies, contact us by mail at join@aevoloop.com.

About Us

We are aevoloop - a fast-scaling deep-tech startup pioneering next-generation plastics for a circular economy. We re-engineer polymers from the ground up to combine high performance with true circularity and biodegradability - turning plastic waste into valuable new materials.

Guided by our values Pioneering, Conscientious, Disruptive, Transparent and Contributive, we unite science with entrepreneurial execution to drive sustainable material innovation at scale.

You want to find out more?

• Breaking Lab Video on YouTube (German) | Deutsches Start-Up denkt Plastik molekular neu
• Press release | aevoloop has secured €8.25 million
• Article from MDR (News media) (German) | Plastik neu denken: Aevoloop entwickelt nachhaltige Kunststoffe aus Leipzig
• Video on YouTube (German) | Forscher fragen: Die Plastikwende (2024) mit Manuel Häußler
• SPRIN-D Podcast (German) | Interview with our Co-Founder Manuel Häußler

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