Vacancy: Experienced Process Engineer – Sustainable Wastewater Solutions Location: Mechelen Employment Type: Full-time Reports To: Engineering Manager About InOpSys InOpSys NV provides innovative and sustainable on-site treatment solutions for industrial side streams and wastewater. Our mission is to avoid transportation and incineration of aqueous and solvent-based waste streams by implementing modular, mobile, and circular technologies. We enable our clients, primarily in the pharmaceutical and chemical industries, to recover valuable resources and close the water loop. Since our founding in 2015, we have grown into a dynamic team driving circular innovation across Europe. In 2024, InOpSys became part of the Indaver / Katoen Natie Group, accelerating our international expansion and technological reach. Learn more at www.inopsys.eu Your Role As an Experienced Process Engineer, you play a pivotal role in designing advanced modular treatment systems for challenging industrial wastewater. You will focus on the engineering, functional analysis, and safety review of processes involving: Sand filtration Ion exchange (IX) Ultrafiltration (UF) Reverse osmosis (RO) Ozonation (Heavy) metal recovery/removal Active Pharmaceutical Ingredient (API) removal You will translate complex treatment goals into clear and executable designs, bridging concept and reality from PFD to commissioning. Key Responsibilities Design and development of PFDs and P&IDs for water and solvent treatment systems Draft and maintain detailed process descriptions, mass and energy balances Lead Functional Analyses (FA) and support automation specification Conduct and participate in HAZOP sessions and risk assessments Define technical specifications for key components (e.g., pumps, valves, instruments) Provide input for procurement, equipment selection, and contractor packages Work closely with project teams from design through commissioning Your Profile Master’s degree in Chemical Engineering, Process Technology, or equivalent Minimum 5 years of experience in process design, preferably in water or chemical treatment Proven experience with designing complex installations using technologies such as RO, IX, UF, and ozonation Knowledge of HAZOP methodology and functional safety Proficient in engineering tools such as AutoCAD Plant P&ID, Aspen, or equivalent Strong analytical and communication skills Fluent in English What We Offer A challenging and impactful role in a mission-driven and expanding company A passionate team in an open, entrepreneurial culture The opportunity to develop sustainable solutions for major industrial players Hybrid and flexible working arrangements A competitive salary with attractive benefits Personal development through ongoing training and growth opportunities The chance to help build a European leader in circular wastewater management Join Us Do you see yourself in this role? Let’s talk!