Fermentation Scientist (m/f/x) @ Early-Stage Biotech Startup

Portfolio Company
Hamburg, Hamburg, Germany
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MicroHarvest is an early-stage startup in Hamburg that focuses on the production of an alternative protein with bacteria. But not just any protein, better protein. Using the power of our bacterial strains and proven scalable technologies we will produce highly nutritional protein solutions for the global feed and food market. With that, MicroHarvest contributes with a sustainable solution to the global challenge of feeding the world.


The basic proof of principle for our production process is there but needs a further technological deep dive and optimization. As a Fermentation Scientist (m/f/x), in your role, you will focus on strain selection, alternative substrate use, and process setup. You will be working closely with the rest of the team to assure full integration of your work with DSP and relevance for scale-up. This will be done in a new lab, meaning you get to build and design it yourself as part of the position. Hands-on all around!


  • You review the potential of different selected strains

  • Research, review, test, and select raw materials.

  • Run fermentation processes at lab scale, including handling routine analytics (e.g. cell counts, UV-Vis, HPLC), both for fermentation optimization and to produce biomass for DSP testing

  • Optimize the medium and fermentation process and assist in the scale-up of your developed process.

  • You develop patents to protect the developed technologies.

  • You will continuously scout the technology landscape for new developments



  • Have owned the development of a bioprocess start-to-end

  • Expertise in the development, execution, and evaluation of experimental setups, including the use of DOE and modeling for stirred tank bioreactors

  • Have the resilience and creativity needed to push the boundaries of current-day industrial biotechnology

  • Experience with fermenting on waste streams of great advantage

  • Experience in patent writing of great advantage

  • Be able to work independently while thriving through collaboration, with an open and critical mindset and a proactive attitude

  • Strong organizational talent and being able to deliver against timelines

  • Fluency in English is a must


  • Work in an energetic, international startup environment

  • Direct and high impact by bringing to market innovative and sustainable solutions to feed the world

  • Opportunity to grow your position with the growth of the startup

Apply now