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 At Altos, your work will be at the heart of a mission to transform medicine by reversing disease and restoring cell health. You will contribute to the development of a new generation of drugs rooted in an advanced understanding of cellular rejuvenation and resilience. As a Research Specialist or Sr Scientist of Assay Sciences, Discovery Pharmacology team, your primary focus will be supporting the needs of development and operation of a wide range of analytical and bioassays within the Drug Discovery and Development (3DS) division of Altos. This is a laboratory research scientist position focused on the development and execution of cell-based and biochemical assays, and complex in vitro bioassays. Your work will contribute to our drug discovery campaigns across a diverse portfolio of discovery and development stage projects. Your expertise will be instrumental in driving our mission and making a significant impact in aging/rejuvenation biology and drug discovery.  Responsibilities * You'll be right in the middle of drug discovery, developing the next generation of medicines. * Your main gig is making, running, and optimizing a ton of analytical and bioassays (cell-based, biochemical, complex in vitro). * You'll be taking manual assays and turning them into super-efficient, automated processes—think moving from a bench to high-throughput screening with automated gear. * You'll need to nail the stats (Z’-factor!) and make sure everything is scalable. * Creating new assays from scratch (de novo development) is also on the list. * Documenting everything in the electronic lab notebook (ELN) for awesome data integrity. * Working with other teams, including the Discovery Sciences, Institute of Computation and Product Development crew. * You'll be a technical lead for the assay sciences team. * You'll also be managing external research partners (CROs) to make sure their data is top-notch. WHO YOU ARE Required Qualifications * Research Specialist Experience Requirement: Bachelors or Masters degree and 8+ years of industry experience. * Sr Scientist Experience Requirements:  PhD and 6+ years post-PhD, PLUS 3+ years of industry experience. * Seriously good at developing and running a huge variety of analytical and bioassays. * You should know your way around cutting-edge assay tech like MSD, HTRF, AlphaLISA, etc. * Expertise with lab automation gear is a must (Bravo, Echo, I.DOT, Digital Dispenser, etc.). * Experience with high-content imaging in high-throughput (96- and 384-well) formats. * You need to be a productive rockstar who can get work done on time. * Great at documenting your experiments in an ELN. * Proven experience managing external CROs. * Excellent communication and organizational skills—ready to multitask * An SME / emerging leader in a technical field with sustained performance and accomplishment. * Strong demonstrable expert knowledge of a specialized research area with a wide breadth of knowledge beyond a research specialty.  * Demonstrates ability to apply excellent professional judgement and high proficiency of application of all skills and techniques relevant to lab / hub research projects. The salary range for Redwood City: * Research Specialist: $129,500 - $166,000 * Senior Scientist I, In Vitro Pharmacology $176,000 - $225,700 Exact compensation may vary based on skills, experience, and location. #LI-NN1 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/