Senior Scientist, Process Development (AAV)

Lexeo Therapeutics

$151K — $157K *
Pharmaceuticals & Biotech
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Master's degree in biochemical engineering, bioprocess engineering, molecular biology, cell biology, or relevant field with 3-6 years of experience, or PhD with 2-4 years of experience.
  • Hands-on experience with upstream AAV production using Sf9 cells/baculovirus and HEK platforms.
  • Desirable understanding of virus/viral vector properties and development processes for viral vectors or gene therapy products.
  • Preferred working knowledge of downstream processing and analytical testing.
  • Experience in late-stage CMC activities, including process optimization and characterization, is preferred.
  • Proven leadership in process development and cross-functional collaboration is expected.
  • Experience with regulatory documentation is preferred.

Responsibilities

  • Design and lead AAV manufacturing process development and optimization studies.
  • Perform laboratory work to execute experiments and generate critical process data.
  • Define study designs for process optimization, scalability, and technology transfer.
  • Collaborate with teams to evaluate process performance and product quality.
  • Support or own late-stage CMC deliverables and regulatory documentation.
  • Author, review, and provide input for technical reports and protocols.
  • Lead troubleshooting and mentoring while driving continuous process improvement initiatives.

Benefits

  • Hybrid work model with 2 days in the NYC office and 3 days remote.
Full Job Description
Role Summary

The Senior Scientist 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 development and optimization studies for AAV manufacturing using Sf9 cells/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

  • Master's degree in biochemical engineering, bioprocess engineering, molecular biology, cell biology, or relevant life sciences or engineering discipline with 3-6 years of relevant experience, or PhD with 2-4 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.


$151,400 - $157,000 a year

Compensation is dependent on qualifications and experience

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

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