R&D Engineer Working Student - Part Time 40-60% - Oberwinterthur, Switzerland **Sulzer is a leading engineering company with a strong legacy of innovation. Become part of our global team to enhance your skills and create innovative solutions that contribute to a prosperous and more sustainable future.** We are looking for a part time working student in R&D Engineering to join our Chemtech Technology & Innovationteam in Oberwinterthur, Switzerland. Join our R&D team for six months (40 - 60 %) and take a chance to work on developing new products for the chemical industry and sustainable technologies, including carbon capture, bio-refineries and emission control. As a working student within our Separation Technology Business Unit, you will collaborate with a dynamic team managing projects from initiating concepts to market – ready solutions. You will gain valuable experience working on key products such as structured and random packings, trays, internals, separators and static mixers – engaging in diverse projects both internally and for clients that are essential to the industry. **Your main tasks and responsibilities:** • Collaborate in the development of structured and random packings, column internals, and related products. • Conduct hands-on evaluation of developed products in hydraulic test rigs, absorption and distillation columns from laboratory to pilot plant scale. • Document, evaluate, and interpret experimental results to produce data-driven insights. • Support the enhancement of our testing facilities and even design new test setups. • Participate in the full product development lifecycle, from ideation through market-readiness, contributing to impactful projects. **To succeed in this role, you will need:** • Pursuing a Bachelor’s or Master’s degree in Chemical Engineering, Process Engineering, or a related field, with strong knowledge in mass transfer and/or separation technology. • Strong interest & experience in hands-on, practical work in a laboratory set-up, including conducting experiments. • Previous experience in data visualization and analysis, with the ability to interpret and document findings effectively. • Basic mechanical skills and hands-on experience with pilot plants are beneficial. • Proficient in Microsoft Office; experience with CAD and programming skills is a plus. • Able to prioritize tasks, collaborate well within a team, and bring a proactive and innovative mindset to the table. • Fluency in English, other languages welcome. **What we offer you:** • An innovative, vibrant and agile culture where you can contribute to sustainable technologies Excellent social benefits (holidays, pension fund etc.) • Attractive employment conditions • Access to a wide range of discounts on Everyday Shopping, Entertainment and Lifestyle • No visa or work permit support can be provided for this role. **Do you have a question about the role?** Reach out to Alexi Donadoni at alexi.donadoni@sulzer.com. Our team is looking forward hearing from you! **Sulzer is an equal opportunity employer. We believe in the strength of a diverse workforce and are committed to offering an inclusive work environment.** We are proud to be recognized as a Top Employer 2025 in Brazil, China, Finland, Germany, Ireland, Switzerland, South Africa, the UK and the USA. ​