Principal Scientist, Upstream - RNA

GSK
Cambridge, MA
Site Name: USA - Massachusetts - Cambridge
Posted Date: Sep 19 2025

This is a lab-based position with an anticipated 4-5 days on-site presence in the laboratory.

The Nucleic Acid Vaccines Center of Excellence (NAV CoE), a global team within the GSK’s Drugs Substance Vaccine’s Technical Research and Development organization, has as a mission to develop the next generation mRNA Drug Substance vaccine platforms for rapid development of new vaccine candidates. It has branches in Cambridge and in Rixensart, Belgium.

We are looking for a highly motivated Upstream Process Development Expert Scientist to join the mRNA Drug Substance (DS) team and work on delivering new mRNA vaccine candidates from development to the clinical manufacturing stages, a role located in Cambridge, MA USA, and reporting to the NAV CoE head (Belgium based). The position will play a significant role in shaping current and next generation GSK’s mRNA vaccine platforms to accelerate addressing unmet medical needs, a compelling field having a direct impact into patients and global health. This exciting opportunity allows you to lead key activities, collaborate with top talents in the vaccines industry, and advance your career while ensuring timely project delivery in collaboration with process development colleagues and GMP team.

Main core responsibilities

  • Autonomously design, execute, and analyze experiments to develop and optimize RNA in-vitro transcription processes to translate into the mRNA platform and continuously evolve it, ensuring phase-appropriate and scalable processes, as part of the overall platform development strategy.

  • Lead transversally process development activities of the upstream team and/ or any other additional initiatives that may arise.

  • Work within a global team, proactively collaborate transversally with BE and US-based DS teams, Analytical R&D, GMP teams, etc, in an agile and open way ensuring good communication and alignment.

  • Drive innovative solutions and meet project milestones.

  • Stay up to date on industry trends and emerging technologies in downstream processing, contributing to continuous improvement initiatives.

Why you?

Basic Qualifications:

We are looking for professionals with these required skills to achieve our goals:

  • MS or PhD with degree in Molecular Biology, Biotechnology, Bioengineering, Chemical Engineering or a related scientific field

  • Experience with RNA biology and mechanisms of eukaryotic translation.

  • 5+ years of industry experience in process development for large biomolecules, preferably mRNA and pDNA, with hands-on experience in mRNA synthesis workflows

  • Experience in overall process development and analytical development activities required for CMC support.

Preferred Qualifications:

If you have the following characteristics, it would be a plus:

  • Experience with Quality by Design.

  • Experience with DOE studies & process improvements, and advancements including parameter optimization, scale-up, process window determination, etc.

  • Knowledge of the large molecule regulatory environment, particularly FDA/ICH/ISPE guidelines on risk management, technology transfer and process validation

  • Experience and understanding in nucleic acid analytical technologies.

Please visit GSK US Benefits Summary t o learn more about the comprehensive benefits program GSK offers US employees.

Why GSK?
Uniting science, technology and talent to get ahead of disease together.

GSK is a global biopharma company with a purpose to unite science, technology and talent to get ahead of disease together. We aim to positively impact the health of 2.5 billion people by the end of the decade, as a successful, growing company where people can thrive. We get ahead of disease by preventing and treating it with innovation in specialty medicines and vaccines. We focus on four therapeutic areas: respiratory, immunology and inflammation; oncology; HIV; and infectious diseases – to impact health at scale.

People and patients around the world count on the medicines and vaccines we make, so we’re committed to creating an environment where our people can thrive and focus on what matters most. Our culture of being ambitious for patients, accountable for impact and doing the right thing is the foundation for how, together, we deliver for patients, shareholders and our people.

If you require an accommodation or other assistance to apply for a job at GSK, please contact the GSK Service Centre at 1-877-694-7547 (US Toll Free) or +1 801 567 5155 (outside US).

GSK is an Equal Opportunity Employer. This ensures that all qualified applicants will receive equal consideration for employment without regard to race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), parental status, national origin, age, disability, genetic information (including family medical history), military service or any basis prohibited under federal, state or local law.

Important notice to Employment businesses/ Agencies

GSK does not accept referrals from employment businesses and/or employment agencies in respect of the vacancies posted on this site. All employment businesses/agencies are required to contact GSK's commercial and general procurement/human resources department to obtain prior written authorization before referring any candidates to GSK. The obtaining of prior written authorization is a condition precedent to any agreement (verbal or written) between the employment business/ agency and GSK. In the absence of such written authorization being obtained any actions undertaken by the employment business/agency shall be deemed to have been performed without the consent or contractual agreement of GSK. GSK shall therefore not be liable for any fees arising from such actions or any fees arising from any referrals by employment businesses/agencies in respect of the vacancies posted on this site.

Please note that if you are a US Licensed Healthcare Professional or Healthcare Professional as defined by the laws of the state issuing your license, GSK may be required to capture and report expenses GSK incurs, on your behalf, in the event you are afforded an interview for employment. This capture of applicable transfers of value is necessary to ensure GSK’s compliance to all federal and state US Transparency requirements. For more information, please visit the Centers for Medicare and Medicaid Services (CMS) website at

Posted 2025-09-19

Recommended Jobs

Home Health Licensed Practical Nurse (LPN/LVN)

Aveanna Healthcare
Fitchburg, MA

Join a Company That Puts People First!   Licensed Practical / Vocational Nurse – LPN/LVN     We are one of the largest private duty nursing companies in the nation and growing! At Aveanna, we’r…

View Details
Posted 2025-08-27

Ambulatory Clinical Pharmacy Specialist-Gastroenterology

Boston Medical Center
Boston, MA

POSITION SUMMARY: Under the direction of the Clinical Manager, ensures optimum patient outcomes related to medication use by preventing or resolving drug-related issues and optimizing the drug t…

View Details
Posted 2025-09-30

Communications Specialist

Tufts University
Medford, MA

Overview The Marketing and Communications Team, within the School of Engineering Dean’s Office, is responsible for creating and implementing the school’s marketing and communications strategies. T…

View Details
Posted 2025-09-05

Assistant Director - Preschool

Learning Care Group
Brookline, MA

Join a strong community where all we do is care-for the children and families we serve every day, as well as for our dedicated team members. Our people are our best asset. We listen and we know what…

View Details
Posted 2025-09-12

Customer Service Representative

Paylessforoil.com, Inc.
Springfield, MA

Are you looking to make a move to a company that values your input and your skills? PayLessforOil.com is currently searching for a customer service representative to join our growing team! Duties and…

View Details
Posted 2025-08-06

Advanced Practice Registered Nurse

OA Management LLC
Boston, MA

Job Description Job Description Minimum of 2-year Advanced Practice - REQUIRED Pain Management REQUIRED  Joint Injections REQUIRED Orthopedic Assessments REQUIRED  Emergency room expe…

View Details
Posted 2025-09-22

Family Medicine Physician - Primary Care

Edward M. Kennedy Community Health Center, Inc.
Worcester, MA

Are you looking for a meaningful career caring for our communities most vulnerable populations?  The Edward M. Kennedy Community Health Center is one of the largest community health centers in Massa…

View Details
Posted 2025-09-22

Line Cook

Red Rock Grill and Bar
Upton, MA

Job Description Job Description Hiring experienced line cooks must be available nights and weekends.

View Details
Posted 2025-07-29

Senior Fullstack Java Developer - Remote (USA)

RELQ TECHNOLOGIES LLC
Massachusetts

Job Title: Senior Fullstack Java Developer Location: Remote (USA) Duration: 6+ months (Contract) USC/GC Only W2 role - No resumes from employers About the Role We ar…

View Details
Posted 2025-09-25