AQUABATTERY is seeking a Stack Lab Technician to provide essential technical support to the Tech Development Team, focusing on the physical assembly and testing of membrane stack hardware. Responsibilities include assembling R&D-scale membrane stacks, validating sealing solutions, assisting with performance and efficiency testing, and supporting operational stability. Candidates should have MBO/HBO or BSc in a related technical field, previous laboratory experience, strong manual dexterity, and be fluent in English.