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Senior Scientist I, Process Development (AAV)

Lexeo Therapeutics


Job Location:

New York City, NY - USA

Yearly Salary: USD 136200 - 172000
Posted: 21 August 2026 (30+ days ago)
Application Deadline: 27 December 2026
Vacancies: 1 Vacancy

Job Summary

RoleSummary

The Senior Scientist I supports development optimization and scale-up of AAV manufacturing processes using Sf9/baculovirus and HEK-based systems. This role contributes to early and late-stage CMC activities including process characterization technology transfer control strategy development and regulatory documentation. The level of responsibility technical leadership and cross-functional ownership will be commensurate with experience.

Primary Responsibilities
  • Design execute and lead process developmentandoptimizationstudies for AAV manufacturing using Sf9cells/baculovirus and HEK platforms.
  • Perform hands-on laboratory work to execute process development and optimization experiments generate critical process data and support technical troubleshooting.
  • Support and as appropriate define study designs to drive process optimization scalability robustness and technology transfer for clinical and late-stage programs.
  • Collaborate with and provide technical leadership across upstream downstream analytical manufacturing and quality teams to evaluate process performance and product quality.
  • Support or own late-stage CMC deliverables including process characterization risk assessments control strategy development technology transfer and validation readiness.
  • Author review and provide technical input for study protocols technical reports and regulatory documentation.
  • Support or lead troubleshooting investigations mentoring of junior staff and continuous process improvement initiatives.
Required Skills and Qualifications
  • Masters degree in biochemical engineering bioprocess engineering molecular biology cell biology or relevant life sciences or engineering discipline with a minimum of 6 years of relevant experience or PhD with at least 3 years of relevant experience.
  • Hands-on experience with upstream AAV production using Sf9 cells/baculovirus and HEK platforms required.
  • Understanding of virus/viral vector properties and experience with development of upstream and downstream processes for viral vectors or gene therapy products are highly desirable.
  • Working knowledge of downstream processing and analytical testing preferred.
  • Experience supporting process optimization characterization and late-stage CMC activities preferred.
  • Demonstrated leadership in process development cross-functional collaboration and late-stage CMC readiness is expected.
  • Experience authoring and reviewing regulatory documentation preferred.
$136200 - $172000 a year
Compensation is dependent on qualifications and experience

About LEXEO

Lexeo Therapeutics is a New York City-based clinical stage company dedicated to reshaping the path of genetic disease. By advancing pioneering science Lexeo seeks to set a new standard in the treatment of cardiovascular and neurological genetic diseases charting the path to patient outcomes once thought out of reach. The Company is advancing a portfolio of therapeutic candidates designed to address the underlying genetic causes of disease including LX2006 for Friedreich ataxia (FA) LX2020 for plakophilin-2 (PKP2) arrhythmogenic cardiomyopathy and others in devastating diseases with high unmet need.

Our work culture is a hybrid model with 2 days in the New York City office and 3 days working from home.

LEXEO Therapeutics is an EEO employer committed to an exciting diverse and enriching work environment.

We may use artificial intelligence (AI) tools to support parts of the hiring process such as reviewing applications analyzing resumes or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed please contact us.

Required Experience:

Senior IC


About Company

About LEXEO Lexeo Therapeutics is a New York City-based, clinical stage company dedicated to reshaping the path of genetic disease. By advancing pioneering science, Lexeo seeks to set a new standard in the treatment of cardiovascular and neurological genetic diseases, charting the pat ... View more

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