Senior Research Associate/Associate Scientist, Cell Process Development &
Retro FitnessRole Overview
Retro Fitness is hiring a Senior Research Associate/Associate Scientist, Cell Process Development &. This is a full-time role in Redwood City. Full responsibilities, required qualifications, and the apply link are listed in the description below.
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Job Description
Retro develops therapies for diseases driven by the biology of aging. We focus on cellular reprogramming and autophagy to broadly improve tissue function by targeting mechanisms of aging with the ultimate aim of adding 10 years to healthy human lifespan.
We’re building a mission-driven team of accomplished and kind individuals who embrace our startup culture of rapid iteration, transparency, and versatility.
We are hiring a new member of the Microglia Therapeutics team* who will help us ramp toward manufacturing readiness. In the near term, this role will focus on hands-on execution of cell culture and manufacturing-related activities in support of GMP readiness and production. Over time, as manufacturing operations become established, this person may also contribute more broadly to process development activities.
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About you:
You are a thoughtful, hands-on team member who likes making complicated things work in the real world. You bring strong experience with iPSC-derived cell types and understand the care, consistency, and discipline required to work with live cell products. You move fast, sweat the details, and do not see speed and rigor as opposites. You are comfortable with repetitive, SOP-driven work and take pride in doing it with consistency and care, while also staying curious, noticing when something is off, and looking for ways to help the team and process work better. You are organized, collaborative, and low-ego, and you are willing to jump in where needed to help the team succeed. You communicate clearly, take ownership of your work, and are excited to help move the mission forward.
In this role you will:
Perform culture of mammalian cells, mainly iPSCs using aseptic technique.
Differentiate iPSCs to brain cell types like microglia in a bioreactor.
Formulate media and reagents for PD and manufacturing activities.
Follow SOPs and perform work in a GMP facility.
Work collaboratively across Retro teams such as Manufacturing, Assay Development, Quality Control, Automation, etc.
Analyze and present experimental data to our internal teams and collaborators.
Maintain highly organized and detailed notes in an electronic lab notebook and contribute to supporting documents.
Perform regular lab organization activities and ordering.
You might thrive in this role if you:
Have a B.S. in Biology or a related field and at least 5 years of relevant experience, or an M.S. with at least 3 years of post-degree research experience.
Have hands-on experience with mammalian cell culture, including work with bioreactors and process development activities.
Are willing to do hands-on manufacturing work and can execute consistently in structured, SOP-driven environments.
Work well in a collaborative, fast-moving environment and maintain detailed, high-quality documentation.
It’s a bonus if you:
Have experience with iPSCs or microglia culture.
Have worked in a GMP manufacturing facility.
\n$115,000 - $140,000 a year
*At Retro, we don't use titles. New hires join as a "Member of X Team". The expectations for this role are generally aligned to levels ranging from Senior RA or Associate Scientist.
Total compensation also includes generous equity and benefits including:
- Medical, dental, and vision insurance for you and your family
- 401(k) plan with 4% matching
- Flexible time off and 10 company holidays per year
- Paid parental leave
- Annual learning & development stipend
- Monthly Longevity stipend
- Daily Retro-sponsored lunch and snacks
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We take pride in cultivating an environment that fosters collaboration, open communication, and authenticity. We believe that great results are best delivered by a highly creative team working in concert. We are an equal opportunity employer; we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are diverse in background and singular in mission.
Frequently Asked Questions
How do I apply for the Senior Research Associate/Associate Scientist, Cell Process Development & position at Retro Fitness?
Use the Apply button above to submit your application directly to Retro Fitness. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.
Where is the Senior Research Associate/Associate Scientist, Cell Process Development & position at Retro Fitness located?
This position is based in Redwood City. Retro Fitness has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.
What does a Senior Research Associate/Associate Scientist, Cell Process Development & at Retro Fitness earn?
Retro Fitness has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.
When was the Senior Research Associate/Associate Scientist, Cell Process Development & role at Retro Fitness posted?
This role was posted on May 13, 2026 (30 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.
How much experience does the Senior Research Associate/Associate Scientist, Cell Process Development & role at Retro Fitness require?
This is a senior-level position. Most senior roles call for 5+ years of directly relevant experience. Retro Fitness lists their specific requirements in the description below, so review the must-have qualifications closely before applying.
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