Finance & Legal Jobs at cylib GmbH

cylib GmbH is a battery recycling company. It transforms end-of-life lithium-ion batteries and production scrap into marketable raw materials. The company covers all process steps from discharging batteries to hydrometallurgical extraction, including processing of production scraps and black mass. Its process recovers all elements in lithium-ion batteries, using a proprietary water-based method for lithium and graphite recovery. cylib was founded at RWTH Aachen University. The company operates with 100% renewable electricity and targets a lower-carbon alternative to raw material extraction for a circular European battery value chain.

• Working Student (m/f/d) - Legal: Aachen, posted 26 August 2026.

cylib GmbH is also hiring in operations (4), hardware and science (1) and sales and business development (1).

Its roles are in Aachen, Germany (5) and Wernberg-Köblitz, Germany (2).

You build the books, the contracts and the controls rather than inherit them. Founders ask you about runway, a customer agreement and a new country's rules in the same afternoon. At a large company each of those sits with a different specialist team.