Head of Process Development & Scale-up (m/f/d)

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Reju is seeking a Head of Process Development & Scale-up (m/f/d) to lead the polyester recycling process from pilot and demonstration to commercial deployment. The role focuses on translating pilot data into robust designs, driving optimization and risk reduction across purification, crystallization, filtration, drying and recycle systems, and coordinating with R&D, engineering and operations partners for timely execution. Ideal candidates hold a degree in Chemical or Process Engineering, with extensive experience in process development and scale-up, and a proven track record of tech transfer from pilot to production. To apply, send detailed documents with salary expectations and start date to Michelle Cascante, highlighting measurable impact and fit with circular textile goals.

At Reju, you join a purpose-led company helping to build the Circular Textile System. 

Our purpose is to transform textile waste into a valuable resource and accelerate the transition to a circular textile industry. Joining Reju means combining purpose with action in a company where people are trusted to take ownership, move fast, and create meaningful impact. 

Head of Process Development & Scale-up (m/f/d) – unlimited contract

Why Reju? - We offer:

• Meaningful work with global environmental impact and the opportunity to help shape a truly circular textile industry.
• Significant ownership and influence over key technology and scale-up decisions. 
• An entrepreneurial culture built on trust, transparency, collaboration, and accountability. 
• The opportunity to collaborate with an international, multidisciplinary team united by a shared purpose and ambition.
• Professional development and career growth opportunities as Reju continues to grow.
• Flexible ways of working with a strong focus on outcomes and impact.
• Competitive compensation and performance-based rewards. 
• The chance to contribute to one of the most advanced chemical recycling technologies driving textile circularity.

Your responsibilities will include:

• Leading the development and scale-up of Reju’s polyester recycling process from pilot and demonstration operations through to commercial deployment. 
• Translating pilot and plant operating data into robust process designs, design bases, and engineering decisions for future industrial facilities. 
• Driving technical decision-making, process optimization, and risk reduction across key unit operations, including purification, crystallization, filtration, drying, and recycle systems. 
• Coordinating process development activities across R&D, engineering, operations, and external technology partners to ensure alignment and effective execution. 
• Establishing and leading the process development roadmap, ensuring critical technical decisions, priorities, and actions are delivered in line with project objectives. 

Your profile:

• Degree in Chemical Engineering, Process Engineering or a related technical discipline; an advanced degree is advantageous. 
• Extensive industrial experience in process development, process engineering and technology scale-up within the chemical, petrochemical, polymer, recycling or related industries. 
• Demonstrated track record in successfully transferring technologies from pilot, demonstration or development scale to commercial implementation. 
• Strong expertise in separation, purification and solids handling operations, such as crystallization, filtration, drying and integrated process systems. 
• Proven ability to lead multidisciplinary teams and drive complex technical decisions in fast-paced and evolving environments. 

Are you curious?

Then we look forward to receiving your detailed application documents, stating your salary expectations and possible starting date to Michelle Cascante.

Reju www.reju.com 

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