Principal Scientist, Biologics Optimization

Location: Spring House

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and Med Tech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn

more at  () .

As guided by Our Credo, Johnson & Johnson is responsible to our employees who work with us throughout the world. We provide an inclusive work environment where each person is considered as an individual. At Johnson & Johnson, we respect the diversity and dignity of our employees and recognize their merit.

** Job Function:*
* Discovery & Pre-Clinical/Clinical Development

** Job Sub*
* ** Function:*
* Biotherapeutics R&D

** Job Category:*
* Scientific/Technology

** All Job Posting Locations:*
* Spring House, Pennsylvania, United States of America

*
* Job Description:

*
* ** About Innovative Medicine*
* Our expertise in Innovative Medicine is informed and inspired by patients, whose insights fuel our science-based advancements. Visionaries like you work on teams that save lives by developing the medicines of tomorrow.

Join us in developing treatments, finding cures, and pioneering the path from lab to life while championing patients every step of the way.

Learn more at

** We are searching for the best talent for*
* ** Principal Scientist, Biologics Optimization in Spring House, PA*
* *
* Purpose:

** The Biologics Optimization team within Biologics Discovery is responsible for the design and optimization of lead biologic variants across multiple therapeutic modalities to achieve differentiated functional outcomes aligned with desired therapeutic mechanism of action (MoA). In this position, the Principal Scientist will serve as a scientific leader and subject matter expert in biologics optimization, driving and dissecting engineering strategies that translate molecular design into improved biological function across diverse therapeutic modalities.  

The Principal Scientist I will be an integral member of the Biologics Optimization team that works on the cutting edge of protein science and technologies to deliver fit-for-purpose optimized protein sequences supporting the therapeutic pipeline.

This role requires deep expertise in antibody and protein engineering, display-based technologies, computational and AI/ML-enabled design approaches, and mechanism-driven biologics discovery. The successful candidate will partner closely with Therapeutic Area scientists, computational scientists, protein engineers, and drug discovery teams to develop and implement optimization strategies that enhance potency, selectivity, efficacy, and overall therapeutic performance.

The Principal Scientist will be expected to establish and champion scientific best practices in function-driven optimization, leveraging detailed understanding of antibody structure-function relationships, protein sequence space, and biological pathways to guide engineering decisions.

This role offers the opportunity to influence discovery programs across the portfolio while shaping future optimization capabilities and technologies within Biologics Discovery.  

This role offers an exciting opportunity to not only engage in the discovery and molecular engineering of biotherapeutics, but also develop new processes and technologies in collaboration with other functional groups. This Principal Scientist I will have the opportunity to lead project teams and interact seamlessly with world-class Therapeutic Area scientists.

** You will be responsible for:*
* + Lead biologics optimization efforts across multiple therapeutic programs, translating target biology and desired mechanisms of action into rational protein engineering strategies.

+ Serve as a subject matter expert in function-driven optimization:  develop and champion novel development efforts aimed at fulfilling strategic long-term antibody design/optimization initiatives and validation.

+ Develop optimization strategies that integrate antibody sequence, structure, develop ability, and biological function to achieve program objectives.

+ Lead/participate on project teams to advance discovery portfolio projects.  Act as a point of accountability for optimization engineering asks and manage project timelines independently.

+ Partner with teams across TD/TA to define critical functional hypotheses and establish screening cascades that enable MoA-driven decision making.

+ Apply computational, AI/ML, and data-driven approaches to guide variant design, library construction, sequence prioritization, and hit selection.

+ Evaluate emerging technologies and develop innovative approaches to accelerate biologics optimization workflows and therapeutic discovery.

+ Independently present/defend scientific findings in multi-functional project…