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Bioprocess Engineer/Senior Bioprocess Engineer


Melt&Marble ( is a start-up company on a mission to boost the growth of the plant-based food industry by providing it with the best and tastiest fats, for both consumers and the planet. We do this by using precision fermentation. By engineering microbial metabolism, we can dictate the structure and properties of the fats that our microbes are producing, allowing us to mimic any fat structure, as well as create completely new and better fats. This results in sustainable vegan fats that can mimic the sensory experience of animal fats, bridging the taste gap between animal-based foods and plant-based alternatives.

Position summary:

We are looking for a bright, enthusiastic and experienced bioprocess engineer to work on optimizing bioprocesses for production of microbial lipids. Successful applicants will be responsible for the fermentation R&D at Melt&Marble, including evaluation of yeast strains in bioreactors, optimization of bioprocess parameters, process scale-up and DSP development. You will work closely with the strain development team and provide feedback on microbial engineering strategies. The position is part hands-on laboratory work, but also includes organizational tasks and supervision of others.

Our ideal candidate should have a strong track record in bioprocess engineering, exceptional organizational skills, and a passion for using science & technology to solve tough challenges. The candidate should also be comfortable working in the dynamic environment of a start-up company, troubleshooting challenging projects, and meeting tight deadlines.

Occasionally, some activities may require working outside of standard working hours. The position will likely require travel within Sweden and abroad.

Responsibilities and tasks:

  • Evaluate strains in bioreactors, including analysis of metabolic, physiological, and performance parameters of yeast strains

  • Design and optimize bioprocesses to improve strain performance (titers, rates, yields, growth)

  • Support the development of downstream processes

  • Oversee scale-up of bioprocesses from lab scale to industrial scale

  • Prepare technical reports, SOPs, and presentations

  • Assist in identifying and securing IPR

  • Find and coordinate with appropriate collaboration partners and suppliers to support above activities

Required qualifications:

  • Candidates should hold an Msc or PhD in bioprocess engineering or a similar field

  • >4 years of fulltime experience working with microbial fermentation, preferably with yeasts and production of derived products

  • Strong expertise with different bioprocesses, including batch, fed-batch, and continuous processes

  • Experience with the modelling/simulation of bioprocesses

  • Experience in optimization of cultivation media

  • Existing knowledge about upstream/downstream processes

  • Excellent organizational and time management skills

  • Excellent written and oral communication skills in English

  • Preferably authorized to work in Sweden (Sweden/EU citizen or permanent resident)

Bonus points:

  • Work experience in a commercial setting

  • Experience with production of lipids

  • Experience with analytics (HPLC, GC-MS, etc.)

  • Experience in scaling up processes from lab to pilot, demo, and/or commercial scale

  • Experience with downstream processing

  • Experience with quality control of bioprocesses (GMP, GLP standards)

  • Leadership experience (supervision, project coordination with external parties, etc.)

Exact title of the position will depend on the candidate’s experience.

We offer:

  • An innovative interdisciplinary research environment where you can advance in your career

  • Unique opportunity to participate in and lead innovative projects that solve real world problems

  • Work in the lovely city of Gothenburg- Sweden’s second-largest city. Gothenburg is a seaside city that offers a great combination of city life and beautiful surrounding nature

  • Flexible work hours, competitive remuneration, generous vacation package, benefits

Location: Gothenburg, Sweden.

Application procedure:

Applications should be submitted as a single PDF file and contain the following:

  • Cover letter- tell us about what excites you about this space and why you think that you’re a great fit for Melt&Marble

  • CV

  • Publication list (if relevant)

Please submit your application here.

In case you’re not a Swedish/EU citizen, please specify in your cover letter whether you have a Swedish work permit or whether you would require sponsorship.

Applications should be submitted to with the subject line “Bioprocess Engineer”.

Application deadline: Rolling. We encourage interested candidates to apply early as applications might be evaluated as they are received.

If you have any questions about the position, feel free to contact us at

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