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“Impossible is just an opinion.” – 

Paulo Coelho


"The ridiculous to the sublime is but a step"

Mutual Respect and Support

For all the talk above about our view of you as a team member, it's important to know that more than anything we believe that whatever your contribution to Expansion, it falls flat if any fail to respect or support fellow team members.  We do not support discrimination of any sort, either during the hiring process or post hire on the basis of race, ethnicity, gender type, beliefs,.. hair style, sock wearing preferences;  It's a long list.  We seek to thrive in and through diversity and are dedicated to maintaining genuine attitudes of respect while doing our best to support and honor your uniqueness.


 – And while we're on it; 



We'd be remiss to mention what underlies the integrity of our work; Being accountable to one another in order to keep the integrity of our work at its highest.  We will go out of our way to ensure our goals stay in alignment with the values of Expansion Therapeutics mentioned above.   

The Silent, (absent) "I" in Team

Bring yourself to this professional outing.  "There is no "I" in Team" does resonate with appropriate equanimity  but we can't abide its limits.  If you're hired to be a part of this endeavor to cure major CNS diseases we'll need you to bring everything you have.  Stand up, say it, do it; and we'll be sure to support you in your vision same as you have come to support ours.   

Culture of Curiosity

If curios is not a state of being, we may not know what else it is.  So whatever else you may encounter as a part of the Expansion Therapeutics team, you can be sure to be both inspired and encouraged to give your curiosity a front-row seat.  Above all be sure not to keep it to yourself.  If you reverse Napoleon's logic, you'll have what we're after here:  

Read our Equal Opportunity statement  

Believe in Yourself

Scientist, Cell Biology



  • Establish cellular assays to demonstrate in vitro proof of concept for therapeutic leads and characterize the cellular activity and downstream disease-relevant biology to help prioritize candidates for in vivo studies.

  • Plan, execute, and critically interpret experiments to understand the pharmacokinetic and pharmacodynamic activities of novel therapeutics to drive drug discovery milestones.

  • Design and execute assays utilizing in vitro models (primary cells, IPSCs) to support preclinical systems, enable target identification, and assay development.

  • Lead the development and scaling of novel cell-based assays.

  • Cultivate scientific and technical expertise to identify novel research avenues to pursue within RNA biology.

  • Analyze and document experimental data generated and ensure timely documentation in electronic laboratory notebooks and internal technical reports.

  • Evaluate data and provide clear reports that can be shared and transferred to and from cross-functional teams.

  • Present data and strategy to scientists and management in appropriate internal and external venues (technical meetings, project team meetings, etc.) as appropriate.

  • Take ownership and manage multiple projects with collaborators to drive innovation.

  • Function as a technical resource within own work group and cross functional teams.


  • PhD with a minimum 2 years’ experience in cell biology or a related field. Prior experience with RNA biology preferred but not required.

  • Demonstrated strong understanding of complex scientific procedures with technical proficiency in molecular and cell biology.

  • Ability to design novel assays for probing small molecule-RNA interactions.

  • Direct experience in ex vivo analysis of pharmacodynamic and molecular markers.

  • Proficient in current cell biology and cell engineering, including working with primary and patient-derived cells

  • Experience with an array of molecular and cell biology methods, including RNA splicing isoform analysis (RT-PCR, RT-qPCR) of cells and tissues, RNA-FISH of cells and tissues, and genotyping of tissues.

  • Excellent oral and written communication, interpersonal, and presentation skills


  • A goal-oriented team player who is self-motivated and has a strong desire to create new and useful tools for molecular biology.

  • Excellent written and oral communication skills.

  • Ability to work independently and collaborate in a multi-disciplinary environment.

  • Critical thinker with a demonstrated ability to effectively collaborate across teams and functional areas.

  • Success-oriented individual with relentless drive towards company and team goals and timelines.

  • Contribute to our company culture, sense of team and collaborative

Expansion Therapeutics fosters an inclusive company culture that values diverse talent, backgrounds, and experiences. We are proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity, national origin, genetics, disability, age, sexual orientation, veteran status, or any other legally protected categories.

Reporting to the Senior Vice President, Research, the Scientist, Cell Biology will bring their cellular biology expertise to deliver high quality, decision-driving studies to define pharmacodynamic and pharmacokinetic (PK/PD) relationships. The candidate will be responsible for applying the latest knowledge and techniques in the field. The individual will advance the assigned program and contribute to the identification of a lead or development candidate. This is a direct laboratory position based in our Cambridge, MA site.

*Title will be commensurate with experience.

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