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About the Role
We are seeking a motivated Senior Scientist with deep expertise in viral and non-viral vector and genetic construct design to drive next-generation gene delivery strategies in a fast-paced, collaborative, and delivery-focused clinical translation research environment. This role will lead the design of lentiviral vectors, transposon-based architectures, and mRNA-based delivery systems, for applications spanning functional genomics, cell engineering, and therapeutic development. The ideal candidate combines rigorous academic training with a practical engineering mindset, capable of translating biological objectives into high-performance genetic constructs.
Responsibilities
- Design, build, and optimize plasmid constructs for lentiviral vector systems, including transfer, packaging, and envelope components.
- Engineer self-inactivating (SIN) lentiviral backbones, optimizing key elements such as LTRs, ψ (psi) packaging signal, RRE, cPPT/CTS, and WPRE.
- Design and implement optimized transposon-based systems including donor vector architecture (ITRs/TIRs), cargo optimization, and transposase delivery strategies.
- Architect expression systems with precise control over gene expression (constitutive, inducible, cell-type specific, or multiplexed designs).
- Evaluate constraints such as payload size, recombination risk, silencing, and integration profiles across delivery platforms.
- Develop and refine mRNA delivery constructs, including optimization of UTRs, codon usage, modified nucleotides, cap structures, and poly(A) tail configurations for enhanced stability and translation.
- Collaborate closely with teams focused on vector production, cell engineering, and functional validation to iterate on construct design.
- Analyze construct performance using sequencing, expression data, and functional assays; troubleshoot inefficiencies in packaging, delivery or expression.
- Maintain comprehensive design documentation, sequence maps, and construct libraries.
- Contribute to strategic direction by evaluating emerging delivery modalities and synthetic biology approaches.
Requirements
- 5 years of relevant postdoctoral or industry experience in gene delivery systems or advanced molecular cloning.
- Proven track record of designing and implementing complex genetic constructs.
Skills
- Deep knowledge of lentiviral vector biology and design, including multi-plasmid systems and safety features.
- Expertise in plasmid architecture, including promoters (e.g., EF1α, CMV, CAG), enhancers, insulators, and post-transcriptional regulatory elements.
- Experience designing mRNA constructs for transient expression and delivery optimization.
- Strong understanding of transposon systems and stable integration strategies.
- Proficiency with DNA design software and sequence analysis tools (e.g., SnapGene, Benchling, Geneious).
- Familiarity with gene expression tuning, including codon optimization, RNA stability, and translational efficiency.
- Ability to interpret NGS and Sanger sequencing data for construct validation.
- Experience with CRISPR/Cas systems, including multiplexed guide RNA architectures and delivery strategies.
- Background in cell therapy, gene therapy, or genome engineering applications.
- Familiarity with non-viral delivery systems (e.g., LNPs for mRNA).
- Exposure to scale-up considerations and translational/regulatory frameworks.
- Experience working in highly collaborative, interdisciplinary environments.
- Engineering-driven approach to biological problem solving
- High attention to detail in sequence-level design
- Ability to balance innovation with practical constraints
- Strong communication skills across scientific disciplines
- Self-directed with a bias toward execution in a fast-moving environment
Location
- Upper East Side
Work Type
- Full-time
Experience Level
- Senior
Education Level
- PhD in Molecular Biology, Virology, Genetic Engineering, Synthetic Biology, or related field.
Salary/Compensations
- $95,500.00 - $112,900.00
Benefits
- Access to cutting-edge genomic technologies and collaborative expertise
- Emphasis on rapid iteration, data-driven decision making, and translational impact
About the Company
- Operates at the interface of academia and biotech: hypothesis-driven research combined with milestone-oriented execution
Equal Opportunity
- Cornell welcomes students, faculty, and staff with diverse backgrounds from across the globe to pursue world-class education and career opportunities, to further the founding principle of “any person, any study.” No person shall be denied employment on the basis of any legally protected status or be subjected to prohibited discrimination involving, but not limited to, such factors as race, ethnic or national origin, citizenship and immigration status, color, sex, pregnancy or pregnancy-related conditions, age, creed, religion, actual or perceived disability (including persons associated with such a person), arrest and/or conviction record, military or veteran status, sexual orientation, gender expression and/or identity, an individual’s genetic information, domestic violence victim status, familial status, marital status, or any other characteristic protected by applicable federal, state, or local law.
- Cornell University embraces diversity in its workforce and seeks job candidates who will contribute to a climate that supports students, faculty, and staff of all identities and backgrounds. We hire based on merit, and encourage people from historically underrepresented and/or marginalized identities to apply. Consistent with federal law, Cornell engages in affirmative action in employment for qualified protected veterans as defined in the Vietnam Era Veterans’ Readjustment Assistance Act (VEVRRA) and qualified individuals with disabilities under Section 503 of the Rehabilitation Act. We also recognize a lawful preference in employment practices for Native Americans living on or near Indian reservations in accordance with applicable law.