Medicinal Chemistry Senior Principal Research Scientist

Job Description Vertex is seeking a Senior Principal Research Scientist, Medicinal Chemistry to provide scientific leadership in the design and optimization of small-molecule therapeutics across discovery programs. This role will play a critical part in advancing high-quality drug candidates from early discovery through candidate selection, while partnering across multidisciplinary teams to solve complex scientific challenges. The ideal candidate is an accomplished medicinal chemist with deep expertise in small-molecule drug discovery, a strong record of scientific innovation, and demonstrated success in a fast-paced and matrixed research environment. This is an on-site role.

Key Responsibilities

• Lead medicinal chemistry strategy for small-molecule discovery programs aligned with portfolio and project objectives.
• Design, prioritize, and guide synthesis of novel compounds to optimize potency, selectivity, pharmacokinetics, and developability.
• Interpret and integrate SAR, structural biology, DMPK, pharmacology, and safety data to drive compound design and progression.
• Partner closely with biology, DMPK, toxicology, and pharmaceutical sciences to advance program goals.
• Provide technical and strategic leadership to internal and external chemistry resources.
• Provide scientific leadership, mentorship, and development support to chemistry team members.
• Communicate program strategy, data, risks, and recommendations to senior leadership and governance teams.
• Support intellectual property strategy in partnership with internal stakeholders.

Knowledge and Skills

• Specialized depth of knowledge and methods in own field/discipline
• Ability to consistently advise/mentor others to execute technically challenging, complex experiments that directly impact projects and programs within discipline
• Ability to consistently identify and leverage new, productive paths/approaches in experiments
• Demonstrated initiative and ability to impact and advance projects through scientific creativity and insights
• Assigned to the more challenging or higher-value project tasks/problems
• Often will have demonstrated outstanding determination and/or persistence in supporting project(s)
• Strong communication skills with the ability to effectively write advanced technical documents, and ability to persuade others presenting technical/scientific concepts to diverse audiences
• Values team work and collaboration to solve problems and design strategies

Education and Experience

• Ph.D. in Chemistry or related scientific discipline with 6+ years of relevant postdoctoral industry experience; Master’s degree with 9+ years of relevant industry experience; or Bachelor’s degree with 11+ years of relevant industry experience. Significant experience in medicinal chemistry and small-molecule drug discovery.
• Demonstrated success advancing discovery programs through candidate selection.
• Experience leading cross-functional and multidisciplinary teams including in matrixed settings.
• Strong communication, strategic thinking, decision-making, prioritization, and problem-solving skills.

#LI-KM1 #LI-Onsite

Pay Range: $164,400 - $246,600 Disclosure Statement: The range provided is based on what we believe is a reasonable estimate for the base salary pay range for this job at the time of posting. This role is eligible for an annual bonus and annual equity awards. Some roles may also be eligible for overtime pay, in accordance with federal and state requirements. Actual base salary pay will be based on a number of factors, including skills, competencies, experience, and other job-related factors permitted by law.

From medical, dental and vision benefits to generous paid time off (including a week-long company shutdown in the Summer and the Winter), educational assistance programs including student loan repayment, a generous commuting subsidy, matching charitable donations, 401(k) and so much more.

Flex Designation

On-Site Designated Flex Eligibility Status: In this On-Site designated role, you will work five days per week on-site with ad hoc flexibility. Note: The Flex status for this position is subject to Vertex’s Policy on Flex @ Vertex Program and may be changed at any time.

Company Information

Vertex is a global biotechnology company that invests in scientific innovation. Vertex is committed to equal employment opportunity and non-discrimination for all employees and qualified applicants without regard to a person's race, color, sex, gender identity or expression, age, religion, national origin, ancestry, ethnicity, disability, veteran status, genetic information, sexual orientation, marital status, or any characteristic protected under applicable law. Vertex is an E-Verify Employer in the United States. Vertex will make reasonable accommodations for qualified individuals with known disabilities, in accordance with applicable law. Any applicant requiring an accommodation in connection with the hiring process and/or to perform the essential functions of the position for which the applicant has applied should make a request to the recruiter or hiring manager, or contact Talent Acquisition at

Help Us Achieve Our Mission: Vertex is a global biotechnology company that invests in scientific innovation to create transformative medicines for people with serious diseases. The company has approved medicines that treat the underlying causes of multiple chronic, life-shortening genetic diseases — cystic fibrosis, sickle cell disease and transfusion-dependent beta thalassemia — and continues to advance clinical and research programs in these diseases. Vertex also has a robust clinical pipeline of investigational therapies across a range of modalities in other serious diseases where it has deep insight into causal human biology, including APOL1-mediated kidney disease, acute and neuropathic pain, type 1 diabetes, myotonic dystrophy type 1 and alpha-1 antitrypsin deficiency.

Founded in 1989 in Cambridge, Mass., Vertex's global headquarters is now located in Boston's Innovation District and its international headquarters is in London. Additionally, the company has research and development sites and commercial offices in North America, Europe, Australia, Latin America and the Middle East.

Vertex is consistently recognized as one of the industry's top places to work, including 14 consecutive years on Science magazine's Top Employers list and one of Fortune’s 100 Best Companies to Work For.

For company updates and to learn more about Vertex's history of innovation, visit or follow us on Facebook, Twitter/X , LinkedIn, YouTube and Instagram. The diversity and authenticity of our people is part of what makes Vertex unique, and we recognize that each employee brings diverse perspectives and strengths. By embracing those strengths and celebrating differences, we are fostering an inclusive culture where each of us can bring our authentic selves to work, inspire innovation together, and change people’s lives. Our vision is clear: to be the place where an authentic, diverse mix of talent want to come, to stay, and do their best work.