C

Colossal

Gene editing for de-extinction of megafauna

Scientist – Embryology/Theriogenologist

Translational Research & Bench BiologyConfirmed live in the last 24 hours
Full-timeDallas, TX, USANo salary listed

About the Job

Requirements

  • Strong expertise in comparative reproductive biology, including endocrinology, oocyte maturation, and pre-implantation embryo development.
  • Experience with multiple species, including non-traditional (wildlife) models, is preferred.
  • Transrectal palpation and ultrasound for monitoring ovarian activity and early pregnancy.
  • Transvaginal and/or laparoscopic oocyte collections.
  • Gamete and embryo cryopreservation.
  • Ability to work independently and with members of the Animal Operations and Embryology teams, including veterinarians, scientists, and animal husbandry experts.
  • At least three years of experience with oocyte collection, embryo collection or production, and embryo transfer, with a track record of successful pregnancies.
  • Must be able to travel, potentially up to 25%.
  • D.V.M. and/or Ph.D. in biological sciences, veterinary medicine, or a related field.
  • Two years of post-doctoral experience or residency training.
  • Demonstrated track record of publication in peer-reviewed journals.

Responsibilities

  • Develop protocols for transvaginal, transrectal, or laparoscopic oocyte collection in a variety of novel model species.
  • Optimize estrus synchronization and superovulation protocols for species in which frequent handling is difficult.
  • Collaborate with the embryology team to optimize conditions for oocyte and embryo transport between animal facilities and Colossal headquarters.
  • Stay current on relevant literature, identify novel protocols and procedures that may apply to Colossal projects, and conduct associated experiments to continuously improve results.
  • Maintain stable success rates and troubleshoot protocols as needed.
  • Travel for training and implementing novel assisted reproductive technologies in non-model organisms.

About the Company

Colossal

Gene editing for de-extinction of megafauna

Colossal develops gene editing approaches to revive extinct or endangered species and restore ecological balance. It collects viable DNA samples and edits genes to rebuild traits of lost megafauna, with Woolly Mammoth as a leading project. Its technology translates into practical applications for species recovery and conservation, aiming to kickstart biodiversity and support the biology economy. Distinctive aspects include a focus on de-extinction tied to ecological restoration, leadership from Ben Lamm and George Church, and a strategy that links scientific capability with real-world ecological and economic benefits. The company’s goal is to reawaken lost wilds to help ecosystems recover and allow humanity to coexist with a healthier planet.

Company size
51-200
Company stage
Series C
Total funding
$625M
Headquarters
Dallas, TX
Founded
2021

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