Radical Dot is hiring a Scale-up/Process Engineer (m/w/o) to support the development and scale-up of our cutting-edge technology for converting mixed plastic waste into high-value chemical building blocks. Moving beyond traditional methods like pyrolysis and gasification, we are pioneering a sustainable and cost-efficient solution for the chemical industry. As an early-stage start-up, we are looking for a hands-on and adaptable team member who thrives in a dynamic environment. You will play a critical role across modeling, process design, and detail engineering for our demonstration plant (100-200 kg/day input plastic), contributing directly to the success of our mission to address the global plastics crisis. Tasks Supporting the scale-up of our lab technology to a demonstration unit capable of processing 100-200 kg of plastic waste per day, which includes the following activities Performing detail engineering and process integration Completing procurement and designing equipment specifications Building and assembling of the demonstration unit Optimization of the demonstration unit Ensuring safe and efficient operations Leading or supporting advanced process modeling using Aspen and reactor fluid dynamic tools to optimize process efficiency and performance. Working closely with the rest of the Engineering and Science team in a collaborative “one-team” mindset. Requirements 3–5 years of experience in chemical or process engineering, including practical experience in the chemical or petrochemical industries. Proven track record in process scale-up, including detail engineering and reactor design. Strong understanding of key scaling parameters, including mass transport, rheology, kinetics, and distillation processes. Problem-solving skills with the ability to anticipate challenges and propose innovative solutions. Familiarity in process modeling and simulation (e.g., Aspen Plus or equivalent tools) and reactor fluid dynamics is required. Strong expertise is a plus. Familiarity with chemical recycling, high-pressure reactions, or corrosive environments is an advantage. Proficiency in English is required; German language skills are an advantage. Benefits Adhésion à un club de sport Indemnisation des frais de voyage Even if you don't meet every single qualification mentioned above, share with us why you believe you'd be an excellent match for this role in your application Your unique skills and perspectives could be the perfect fit for our team.