Senior Research Associate/ Scientist, Drug Product Process Development and Manufacturing

Our Mission Our mission is to restore cell health and resilience through cell rejuvenation to reverse disease, injury, and the disabilities that can occur throughout life. For more information, see our website at altoslabs.com. Our Value Our Single Altos Value: Everyone Owns Achieving Our Inspiring Mission. Diversity at Altos Altos Labs has been named one of the Top 3 Biotech Companies and ranked for the second year on the Forbes 2026 Best Startups in America list. At Altos, exceptional scientists and industry leaders from around the world work together to advance a shared mission. Our intentional focus is on Belonging, so that all employees know that they are valued for their unique perspectives. We are all accountable for sustaining a diverse and inclusive environment. What You Will Contribute To Altos We believe that diverse perspectives are foundational to scientific innovation and inquiry. At Altos, exceptional scientists and industry leaders from around the world work together to advance a shared mission. Our intentional focus is on Belonging, so that all employees know that they are valued for their unique perspectives. We are all accountable for sustaining a diverse and inclusive environment. What You Will Contribute To Altos We are seeking a highly motivated and hands-on Scientist to join the Drug Product Process Development team within Technical Operations at the Institute of Medicine. This is a predominantly bench-based role; the successful candidate will independently design and execute experiments daily, advancing mRNA-LNP,AAV and Protein-based therapeutic programs. Working in a dynamic and cross-functional environment, this scientist will perform formulation and drug product process development, and provide technical support for outsourced GMP manufacturing activities. Responsibilities Perform hands-on formulation and drug product process development for mRNA-LNP therapeutics, with additional involvement in AAV gene therapy and protein drug product development. Design and execute experiments to develop stable and effective drug product formulations, including excipient selection, concentration optimization, and compatibility studies; build internal drug product process development capabilities and produce materials to supply non-clinical studies. Develop and scale up drug product manufacturing processes, considering critical process parameters (CPPs) and critical quality attributes (CQAs); apply statistical analysis and experimental design to optimize process parameters and maximize product yield and quality. Conduct stability testing to assess the long-term integrity of drug products under various storage conditions and identify potential degradation pathways. Collaborate with CDMOs to optimize and improve drug product manufacturing processes, support scale-up, and contribute to in-process control strategies; provide technical support for GMP manufacturing activities including document review. Maintain accurate laboratory records, document experimental protocols and results, and contribute to development reports and regulatory submissions. Stay current with industry trends, emerging technologies, and regulatory guidelines to support continuous process improvement and compliance. Actively contribute to a team culture of continuous improvement, ownership, professional growth, and inclusion. Who You Are Qualifications Scientist Level Reqrurement: Ph.D. in chemical engineering, biochemical engineering, biotechnology, pharmaceutical sciences, or a related field with 2–3 years of relevant industry experience Senior Research Associate Requirement: Master’s degree in a related discipline with a minimum of 6 years of relevant industry experience in drug product process development Hands-on experience with mRNA-LNP formulation and/or process development is strongly preferred. Experience with protein therapeutics and/or AAV gene therapy formulation development is a plus. Experience with formulation development, process optimization, and drug product development Experience with drug product unit operations (e.g., filling, filtration, mixing), including scale-down model development, characterization, and scale-up. Understanding of the physical and chemical stability of biologics and how process-related stresses impact product quality. Strong problem-solving skills with the ability to independently design experiments, interpret complex data sets, and communicate findings clearly. Ability to thrive in a dynamic, fast-paced environment, adapting readily to shifting priorities with a willingness to develop new technical skills and to work across multiple therapeutic modalities. Excellent written and verbal communication skills; ability to collaborate effectively in a diverse, global, cross-functional organization and a commitment to diversity, equity, and belonging. This is a full-time onsite role (five days per week) in Redwood City, CA, with ad-hoc flexibility. Final job level will be determined based on the selected candidate’s experience and qualifications. The salary range for Redwood City, CA: Scientist I, Drug Product: $113,100 - $145,000 Scientist II, Drug Product: $136,000 - $174,400 The salary range for Redwood City, CA: Senior Research Associate: $109,200 - $140,000 Research Specialist: $129,500 - $166,000 Exact compensation may vary based on skills, experience, and location.

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Equal Opportunity Employment We value collaboration and scientific excellence. We believe that a culture of belonging are foundational to scientific innovation and inquiry. At Altos Labs, exceptional scientists and industry leaders from around the world work together to advance a shared mission. Our intentional focus is on Belonging, so that all employees know that they are valued for their unique perspectives. We are all accountable for sustaining an inclusive environment. Altos Labs provides equal employment opportunities to all employees and applicants for employment, without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Altos prohibits unlawful discrimination and harassment. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training. Thank you for your interest in Altos Labs where we strive for a culture of scientific excellence, learning, and belonging. Note: Altos Labs will not ask you to download a messaging app for an interview or outlay your own money to get started as an employee. If this sounds like your interaction with people claiming to be with Altos, it is not legitimate and has nothing to do with Altos. Learn more about a common job scam at