Senior Process Engineer

About the role

The Senior Process Engineer will lead the technical design, scale-up, commissioning, and ramp-up of battery recycling processes. This role bridges technology development and industrial scale-up, translating operational data into robust process designs for graphite and lithium extraction. You will work closely with R&D and Operations to ensure future plants are built on solid engineering fundamentals.

Responsibilities

• Own key process design activities for next-generation plants including PFDs, P&IDs, and mass and energy balances.
• Translate pilot and industrial operating data into reliable engineering design criteria and scale-up assumptions.
• Apply chemical engineering fundamentals to optimize graphite and lithium extraction and post-processing.
• Evaluate operational data to build and validate process models and identify performance gaps.
• Participate in FATs, SATs, commissioning activities, and process performance validation.
• Translate process design intent into clear Standard Operating Procedures and participate in process safety reviews like HAZOP and LOPA.

Required skills

• Chemical Engineering
• Process Engineering
• PFDs
• P&IDs
• Mass and energy balances
• Equipment sizing
• Process scale-up
• Commissioning
• Process validation
• HAZOP
• LOPA

Nice to have

• Hydrometallurgy
• Solid-liquid separation
• Precipitation
• Flotation
• Mineral processing
• German language

Qualifications

• Degree in Chemical Engineering, Process Engineering, Metallurgical Engineering or a related technical field

About the Company

tozero is Europe’s leading deep-tech startup specializing in the recycling of lithium-ion batteries. The company is committed to accelerating decarbonization and transforming the material life cycle through sustainable recycling solutions.