(Senior) Manufacturing Engineer (m/f/x) | Climate Tech Startup

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About Us

tozero is Europe’s leading deep-tech startup specializing in the recycling of lithium-ion batteries. Committed to securing critical raw material independence and regenerating materials, we are developing innovative and sustainable solutions for a cleaner future.

What We're Looking For

We are looking for an experienced (Senior) Manufacturing Engineer (m/f/x) to join our growing technical team.In this role, you will focus on the industrial-scale demo plant and support the industrialization of our hydrometallurgical recycling technology in an operational environment. You will work across equipment integration, detailed engineering, commissioning, start-up, and ramp-up to help translate technical concepts into reliable plant operations. This is an exciting opportunity to take ownership in a fast-paced startup environment and contribute directly to the deployment of cutting-edge recycling technology.

What You Can Expect

  • Support the engineering, commissioning, start-up, and ramp-up of our industrial-scale demo plant
  • Develop and refine manufacturing and plant concepts, including process layouts, block flow diagrams, and mass and energy balances
  • Translate technical and process requirements into robust operational solutions for industrial-scale implementation
  • Contribute to pre-feasibility, detailed engineering, and plant execution activities, including process flow diagrams (PFDs), piping and instrumentation diagrams (P&IDs), and layout development
  • Prepare technical specifications and data sheets for key equipment procurement
  • Collaborate with internal teams, suppliers, and external partners to define technical requirements, milestones, and deliverables
  • Plan and execute pre-commissioning, commissioning, start-up, and ramp-up activities
  • Support troubleshooting and optimization of plant performance, reliability, and operability
  • Plan and execute tests and validation activities on the industrial-scale demo plant
  • Use simulations and engineering calculations to validate assumptions and support implementation decisions
  • Test and qualify equipment at both company and supplier sites
  • Help structure technical workstreams and project activities to achieve milestones on time and within scope
  • Work closely with cross-functional teams across engineering, operations, and project execution

Your profile

  • 5+ years of experience in manufacturing, process, production, or industrial engineering, ideally in chemicals, mining, metallurgy, recycling, or related industries
  • Strong hands-on experience with commissioning, start-up, and ramp-up activities in an industrial environment
  • Experience working on industrial plants, demonstration plants, or scale-up facilities
  • Familiarity with industrial process equipment such as pumps, valves, tanks, piping systems, and other plant infrastructure
  • Experience with engineering documentation such as PFDs, P&IDs, BFDs, technical specifications, and change management systems
  • Proficiency in process modeling, simulation, and engineering calculations
  • Strong troubleshooting and problem-solving skills in operational and project settings
  • Ability to work independently while collaborating effectively with cross-functional teams
  • Ideally familiar with industry-relevant standards and regulations such as PED, ATEX, Machinery Directive, REACH, Seveso, ISO 9001, and ISO 14001
  • German language skills are a plus
  • Passion for sustainability and interest in cleantech, manufacturing, and battery recycling

Why us?

At tozero, we believe in creating a supportive and dynamic work environment where you can grow, contribute, and make an impact.

  • Fitness Subscription: Prioritize your well-being with a complimentary fitness subscription, promoting a healthy and active lifestyle.
  • Education Budget: We encourage continuous learning and development. Benefit from an education budget to enhance your skills and knowledge.
  • Free Snacks and Drinks in the Office: Stay energized throughout the day with a variety of snacks and beverages.
  • Jobticket: Conveniently commute to work and all around Germany with our fully subsidized Deutschlandticket.
  • Dynamic Startup Environment: Thrive in a highly dynamic startup culture, collaborating with experts in the field and contributing to innovative projects that shape the future

About Us

Welcome to tozero, Europe's leading deep-tech startup in the recycling of lithium-ion batteries. With the goal of combating climate change and advancing the circular economy, we are actively developing sustainable recycling solutions for a clean and innovative future.