As Senior Commissioning Engineer, you play a pivotal role in bringing our hydrometallurgical battery recycling plant to life – taking full ownership of commissioning end-to-end across all process units and utilities – from mechanical completion through pre-commissioning, commissioning, start-up, performance testing, and handover to Operations.
You own the commissioning strategy and execution plan, including systemization, commissioning sequencing, readiness criteria, and integration with the overall project schedule (engineering, procurement, construction, and operations readiness).
You act as the Owner’s commissioning lead towards the engineering contractor: you set expectations, define deliverables, and ensure commissioning requirements (including commissionability, operability, and maintainability) are designed in from the earliest project stages.
strong acids, organic solvents, toxic gases).
You coordinate start-up activities across all disciplines – Process, Mechanical, E&I, Automation, Vendors, and Contractors – to bring all process units into stable plant operation.
You lead troubleshooting and root-cause analysis during start-up and ramp-up, turning issues into permanent fixes via disciplined change control (MOC) and close-out with the engineering contractor and suppliers.
You enable operational readiness by supporting SOP development, training operators, advising on spare parts criticality, and ensuring a smooth handover into routine operations.
Ideally, you contribute your commissioning perspective during the design phase, providing constructive feedback on plant layout, start-up readiness, and operability to the process and plant engineering teams.
You bring 8+ years of relevant hands-on experience in commissioning and start-up of hydrometallurgical, chemical, or metallurgical processing plants, ideally covering both core process units and utilities.
You bring strong interface management skills: translating commissioning needs into clear engineering actions, tracking open points, and ensuring timely resolution across multiple disciplines and parties.
You communicate fluently in English and German, both written and spoken.
You take ownership from day one – after an intensive onboarding, you'll build something unique with us and shape outcomes with real impact on results.
You work to the highest standards – we combine the professionalism of leading industry with the innovative power of a top-tier, research-driven technology team.
cylib is a research-based German scaleup for holistic battery recycling - starting from discharging to recovery of all components of the lithium battery - that was founded in Aachen in 2022 by three visionary founders, including a female CEO.
The process was developed over several years of research at the renown RWTH Aachen University and offers an efficient, resource- and climate friendly recovery of all battery materials from end-of-life batteries.