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  The Mass Spectrometry Hub sits within the Institute of Technology, where we have access to an array of cutting edge instrumentation. Together we are a team with a wide variety of skills and experiences that tackle exciting challenges across all of Altos. The Scientist /  Senior Scientist, Metabolomics Group Lead is responsible for end-to-end management of metabolomics and lipidomics projects, from experimental design through sample preparation, measurement, data processing and data delivery. This role partners cross-functionally with scientific and bioinformatics teams to ensure robust, reproducible data generation, maintain operational excellence of LC-MS platforms, and drive projects to successful and timely completion. Responsibilities * Collaborate with cross-functional scientists to define project objectives, assess feasibility, and establish clear deliverables and timelines * Execute and supervise sample preparation workflows for steady-state metabolomics and lipidomics * Operate, maintain, and troubleshoot LC-MS instrumentation (e.g., Thermo Exploris 240, SCIEX 7500, Vanquish HPLC) to ensure optimal performance and minimal downtime * Optimize and adapt extraction protocols to support analysis of diverse and challenging biological samples * Process and analyze raw datasets with software (e.g. Skyline, Compound Discoverer), and coordinate with bioinformatics teams to ensure accurate data processing, quality control, and efficient project execution * Maintain accurate and up-to-date project tracking and documentation in systems, such as Benchling, and shared project management tools * Communicate project status, timelines, and risks effectively to internal stakeholders and leadership Who You Are  Minimum Qualifications * PhD (or equivalent experience) in metabolomics, lipidomics, analytical chemistry, biochemistry, or a related discipline. * >6 years of hands-on experience with both HRAM and LRMS preferably with Orbitrap Exploris and SCIEX triple quadrupole mass spectrometry platforms. * Strong experimental design and problem-solving skills, with experience performing sample preparation of cells, tissues, and biofluids. * Demonstrated experience with mentoring and project management, including managing collaborations with scientists with diverse training backgrounds Ideal candidates would satisfy two or more of the following preferred qualifications * Experience developing new methods for analysis of metabolites/lipids of interest * Prior experience in Metabolite Identification and trapping in the context of drug metabolism * Experience performing large-scale discovery studies of > 1,000 samples * Experience designing and interpreting complex isotope tracing experiments (e.g., metabolic flux analysis) * Experience integrating metabolomics/lipidomics with other omics, including proteomics and transcriptomics   Salary Range: Redwood City, California Scientist II: $156,800- $201,000 Senior Scientist : $172,400- $221,000 This is an on- site role   EQUAL OPPORTUNITY EMPLOYMENT We value collaboration and scientific excellence. We believe that diverse perspectives and 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 https://www.linkedin.com/pulse/how-spot-avoid-online-job-scams-biron-clark/ For UK applicants, before submitting your application: - Please click here to read the Altos Labs EU and UK Applicant Privacy Notice (bit.ly/eu_uk_privacy_notice) - This Privacy Notice is not a contract, express or implied and it does not set terms or conditions of employment. 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 https://www.linkedin.com/pulse/how-spot-avoid-online-job-scams-biron-clark/