Process Engineer

TreaTech, a company based in Préverenges, Switzerland, specializes in waste treatment and resource recovery. Founded in 2015 by engineers from École Polytechnique Fédérale de Lausanne (EPFL), TreaTech is developing a patented catalytic hydrothermal gasification technology. This technology converts organic waste into valuable resources such as renewable gas, clean water, and recoverable minerals. The company is currently seeking a Process Engineer to play a key role in the design, construction, and commissioning of their next unit. The Process Engineer will lead process engineering activities for the delivery of TreaTech's next units. This includes contributing to process design from concept study through detailed engineering, ensuring overall process consistency, and preparing technical equipment specifications. The role involves issuing Requests for Quotation (RFQs) and managing technical follow-up with suppliers. The engineer will also contribute to technical decisions regarding critical equipment and process safety studies. Additionally, the role includes following equipment fabrication, installation, and assembly activities, as well as participating in Factory Acceptance Tests (FAT), Site Acceptance Tests (SAT), and commissioning activities. Preparing operating procedures and process validation reports are also part of the responsibilities. The position requires occasional travel within Switzerland and abroad. To qualify for this role, candidates must have an engineering degree or PhD in Process Engineering, Chemical Engineering, or Mechanical Engineering. They should have 5 to 10 years of experience in process engineering within the chemical, energy, or environmental sectors. Significant experience in industrial process design, equipment sizing and specification, and industrial or pilot-scale project execution is required. A good understanding of high-pressure/high-temperature processes, pressure equipment, corrosion, materials selection, and mechanical constraints is also necessary. Knowledge of process safety analyses such as HAZOP and ATEX, as well as commissioning and start-up of industrial units, is essential. The ability to interact effectively with equipment suppliers, engineering partners, and multidisciplinary internal teams is crucial. Nice-to-have skills include a pragmatic and hands-on mindset, strong analytical and problem-solving skills, and the ability to work autonomously, proactively, and accountably. Strong communication skills and the ability to work across multiple interfaces are also valuable. A strong interest in innovative technologies and industrial scale-up is beneficial. The role is based in Préverenges, Switzerland, and offers a stimulating and inspiring working environment with a positive company culture built around dynamism, flexibility, and teamwork. What the role asks for: - Engineering degree or PhD in Process Engineering, Chemical Engineering or Mechanical Engineering. - 5 to 10 years of experience in process engineering within the chemical, energy or environmental sectors. - Significant experience in industrial process design, including PFDs, P&IDs and mass & energy balances. - Significant experience in equipment sizing and specification. - Significant experience in industrial or pilot-scale project execution. - Good understanding of high-pressure / high-temperature processes. - Good understanding of pressure equipment. - Good understanding of corrosion, materials selection and mechanical constraints. - Knowledge of process safety analyses such as HAZOP and ATEX. - Knowledge of commissioning and start-up of industrial units. - French: Fluent. - English: Good professional proficiency, minimum B2 level.