Strain Development Scientist I

Boston MA /
Microbial Engineering /
Joyn Bio is an ag-biotech company developing more sustainable ways to feed the world. Started by agriculture and synthetic biology leaders Bayer and Ginkgo Bioworks, Joyn Bio is engineering beneficial microbes found in the environment to improve naturally occurring processes like nitrogen fixation. With exclusive access to Ginkgo Bioworks’ automated foundries for biological engineering and Bayer’s crop science expertise, Joyn Bio is delivering the scale and power of synthetic biology to agriculture. Joyn Bio brings together scientists with diverse backgrounds at its two sites in Boston, Massachusetts and Woodland, California to develop new microbial solutions that address growers’ biggest challenges. For more information please visit


    • Joyn Bio is looking for a Strain Development Scientist who will contribute to the characterization, engineering and screening of R&D processes aimed at improving Gram positive microorganisms for large scale commercial agriculture applications.


    • Ideate, design and execute experiments to characterize growth, domesticate and screen various Gram positive organisms. 
    • Work closely with the Lead of Strain Engineering Development Platform and Program Directors to develop a strain engineering strategy that is aligned with defined objectives and drive the technical strategy on a day-to-day basis.
    • Innovate and advance methods for increasing efficiency of Gram positive bacteria engineering and screening through development and implementation of HTP technologies to enhance Joyn Bio platforms and capabilities.
    • Collaborate with the Microbial Engineering, Plant Microbe Interaction, Bioprocessing Formulation and Downstream Processing, Digital Sciences and Technology and Regulatory teams to develop commercially relevant processes. 
    • Draft and manage Technical Project Plans in collaboration with research partners and CROs. 
    • May manage and mentor junior personnel.


    • PhD with 1-2 years post-doctoral experience in microbiology, microbial physiology, molecular biology and/or related fields is required for consideration. Industry experience is a plus.
    • Extensive experience with culturing and domesticating bacteria. Experience with Gram positive bacteria with an emphasis on Bacillus species and sporulation is a plus.
    • Proven track record and passion for developing and building HTP strain engineering tools and screening platforms.
    • Must be a detail oriented, highly organized, and collaborative self-starter with excellent interpersonal, communication and presentation skills.


    • Will report into the Lead of Strain Engineering Development Platform.
    • 75% of the time dedicated to working at the bench is necessary.


    • This position will be based at our Boston, Massachusetts site, and will require minimal travel.