Senda Biosciences is pioneering the field of Intersystems Biology to create novel treatments for human disease. Intersystems Biology focuses on how molecular connections between botanical, bacterial, and human cells—coevolved over millennia—define health and disease. Senda's Intersystems Biology discovery platform, built using new techniques in machine learning and computational biology, has been able to generate novel, actionable insights into the trillions of interspecies molecular connections in the human body, and harnesses the power of this "pharmacy within us" with novel pharmacological approaches. The power of the Senda platform is illustrated by six preclinical programs in oncology, neurology, chronic disease, and metabolic disease. Senda was founded by Flagship Labs, the innovation foundry of Flagship Pioneering. To learn more, please visit the company's website at  

The Position 

The (Sr.) Scientist, Microbial Strain Engineer will work with an interdisciplinary team to advance new bacterial delivery modalities through therapeutic development. This individual will be a key member of Senda’s dynamic, expanding, and collaborative team that combines significant experience in host-microbe interactions, microbial strain engineering, drug delivery, and translational biology to unlock the potential of the company’s core technological platform.   

Key Responsibilities: 

  • Contribute to the expansion of an exciting new therapeutic platform by engineering diverse microbial species to deliver disease relevant cargoes 
  • Develop and implement innovative approaches to engineer bacteria for therapeutic applications 
  • Design, build, and test novel constructs for microbial strain engineering, including heterologous gene expression systems, and chromosomal modifications in model and non-model bacteria 
  • Conduct in vitro and ex vivo assays to assess immune response, toxicity, cargo loading of engineered bacterial strains 
  • Work with senior leadership to develop and execute the platform’s core scientific vision 
  • Mentor research associates and junior scientists and foster a culture of excellence grounded in the principles of synthetic biology and microbial strain engineering 

Required Skills/Experience: 

  • PhD in microbiology or related field with expertise in synthetic biology, bacterial strain engineering 
  • Experience engineering diverse bacteria including Gram-negative and Gram-positive, model and non-model organisms, including probiotic strains, commensal bacteriaetc. 
  • Expertise with diverse strain engineering techniques including, lambda red recombineering, Gibson assembly, Type IIS restriction cloning, Golden Gate assembly, allelic exchange cloning, etc. 
  • Extensive experience characterizing the functionality of engineered constructs, including tuning expression, overcoming toxicity, and implementing downstream assays to inform optimized strain engineering 
  • Experience with in vitro or ex vivo characterization of engineered strains 
  • Excellent verbal and written communication skills 
  • Team-oriented 
  • Strong organizational skills 
  • Ability to work in a fast-paced and dynamic environment 

Desired Skills/Experience: 

  • 2 years post-doc or industry experience 
  • Experience with the engineering or development of live biotherapeutics 
  • Expertise in microbial cell biology, including subcellular localization, secretion, and surface display 
  • Experience developing assays for novel synthetic biology applications, including analytical characterization of constructs and products 


Senda Biosciences is an Equal Opportunity Employer. Senda does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, national origin, veteran status, or any other status protected under federal, state, or local law.

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