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ONEJOON GmbH is a German plant engineering company with the German locations Bovenden, near Göttingen and Böblingen, near Stuttgart. The company has a tradition of over 100 years in the construction of highly flexible and technologically sophisticated furnaces in a wide range of industries. ONEJOON GmbH employs approximately 210 employees worldwide.

ONEJOON is the technology and market leader for oxidation and carbonization furnaces in the core market of carbon fiber production. The company occupies a prominent position in the markets for cathode and anode material production for lithium-ion batteries, hardening of blades and saw blades, sintering of metals and ceramics, heat treatment of aluminum wheels and in the field of special applications and novel materials (e.g. in the field of powder chemistry and fuel cells). In addition to customized furnace technology, ONEJOON also supplies the appropriate automation and integration of process and material flow.

Since January 2020 ONEJOON GmbH, the former Eisenmann Thermal Solutions GmbH & Co. KG, with locations in Germany, USA and China, has been a wholly owned subsidiary of the ONEJOON Group.

The parent company ONEJOON Co, Ltd. is a mechanical engineering company based in Suwon, South Korea, whose main market is the manufacture of high-temperature furnace systems including associated conveyor and process technology for processing cathode and anode material in lithium-ion batteries.

Innovation. Passion. Success.

for all who want to move more!

What drives you is the fun in tasks that really challenge you?
Then get started now with ONEJOON - the successful family-owned business and global player.

We offer you challenging tasks with an international alignment, for example in the areas of research and development, design, technical sales, project management and controlling or software engineering.

Through "training on job" we prepare you specifically and individually for your field of activity.

To learn with every challenge - that is our claim!

You look for

  • challenges you can grow with
  • challenging tasks in an innovative environment
  • opportunities to develop your potential and realize your ideas
  • attractive professional and personal development opportunities

We expect

  • motivated team players with a passion for unique technical solutions
  • lateral thinkers with inventive talent and a thirst for development
  • goal orientation and commitment
  • flexibility and hands-on mentality
  • active and open communication also in an international context

We offer

  • tailor-made training programs
  • tasks as versatile and varied as our technology
  • new challenges in our projects every day
  • interdisciplinary & cross-departmental cooperation
  • performance-related remuneration & social benefits
  • open & constructive exchange of opinions
  • pleasant & uncomplicated working atmosphere

Our benefits

  • flexible working hours and family-friendly working time models
  • further education & training
  • food allowances & free drinks
  • canteen
  • employee parking spaces
  • good transport connections
  • accessibility
  • capital-forming benefits 
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Heat treatment plants

More than 120 years experience in industrial furnace construction