Jonathan Janssen has ceased consulting activities

Career launch at GE Global Research (Edison Engineering Development Program) in industrial R&D and manufacturing systems.

Master’s in Materials Engineering. Advanced role in GE’s Process Systems Lab, developing new manufacturing processes across the GE portfolio.

Moved out of pure research into an automated casting foundry startup at GE Aviation Deutschland, facing real production constraints.

After a painful plant shutdown, pivoted to Lilium and became Lilium’s first Manufacturing Engineering Manager, building the ME function from zero.

Built and led Lilium’s Manufacturing Process Engineering team, covering batteries, machining, composites, and final assembly processes.

Promoted to Head of Manufacturing Engineering, responsible for delivering Start of Production across all aircraft internal production value streams.

Head of Central Services – overseeing Industrial Engineering, Facilities, Tooling and Fixture Design, Machining/Additive, and the production training academy.

After Lilium's tragic shutdown, pivoted to VoltStorage as Head of Manufacturing, industrializing iron-salt battery technology and building a new production line under tight capital constraints.

Established independent practice as a deep-tech scale-up expert, guiding founders from first build to first factory.

Co-founded Starforge and fully dedicated as its Chief Operating Officer.