Research Intern (Process Development) - Onsite - Marlborough, MA

Hands on position starting September 2025 for a minimum of six months up to a maximum of ten months

Onsite at our Marlborough, MA site,

In the Research Intern role, you will serve as a critical contributor in a collaborative project between Corporate Research and Process Development Services team. This project is focused on cargo loading optimization and efficiency evaluation.

• Design and Execute Loading Strategies: Develop and optimize methods for encapsulating or loading small molecule cargos into nanoparticle carriers (e.g., EVs, LNPs), including passive and active loading techniques.

• Analytical Method Development: Develop and apply analytical assays to quantify cargo loading efficiency, release kinetics, and encapsulated vs. free small molecules using techniques such as HPLC, Nanoparticle Tracking Analysis, Flow Cytometry, and Raman Analysis.

• Physicochemical Characterization: Support characterization of loaded nanoparticles for size, polydispersity, and zeta potential using DLS, NTA, and other particle characterization tools.

• Stability and Release Studies: Conduct in vitro stability testing and release profiling under different physiological conditions.

• Process Optimization: Collaborate with team members to integrate loading and analytics into scalable process workflows suitable for preclinical or early clinical development.

• Data Analysis and Reporting: Analyze experimental data, maintain accurate and detailed lab records, and contribute to technical reports, presentations, and internal documentation.

• Cross-functional Collaboration: Engage with upstream, downstream, and analytical development teams to ensure seamless workflow integration and transfer of findings.

What will convince us

Education:

• PhD candidate (or recent graduate) in Chemical Engineering, Biomedical Engineering, Bioengineering, Chemistry, Nanotechnology, or a related field.

Experience:

• Hands-on experience with small molecule formulation, drug delivery systems, or cargo loading into nanoparticles.

• Proficiency in analytical techniques for small molecule quantification (e.g., HPLC, LC-MS, fluorescence, UV-Vis).

• Familiarity with nanoparticle platforms such as extracellular vesicles, lipid nanoparticles (LNPs), or polymeric carriers.

• Strong data analysis skills and proficiency in scientific software (e.g., GraphPad Prism, ChemStation, or equivalent).

• Excellent communication, organizational, and documentation skills.

• Experience working as part of multi-partner R&D projects

• Identification with our core values: Sustainability, Openness, Enjoyment

What We Offer

As a growing global life science company, with our stock listed on the German DAX and TecDAX , Sartorius offers a wide range of benefits:
Personal and Professional Development: Mentoring, leadership programs, internal seminar offerings
Making an Impact Right from the Start: Comprehensive onboarding, including a virtual online platform
Welcoming Culture: Mutual support, team spirit and international collaboration; communities on numerous topics such as "Coaching", "Agile Working" and a "Businesswomen's Network"
Intelligent Working Environment: Working in smart buildings with the latest technology and equipment.

Sartorius is an equal opportunity employer and will consider all qualified applicants for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, disability or based on status in any other protected group of class.

Please view equal employment opportunity posters provided by OFCCP here.

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Sartorius is part of the solution in the fight against cancer, dementia, and many other diseases. Our technologies help translate scientific discoveries into real-world medicine faster, so that new therapeutics can reach patients worldwide. We look for ambitious team players and creative minds, who want to contribute to this goal and advance their careers in a dynamic global environment. Join our global team and become part of the solution. We are looking forward to receiving your application.

We look forward to receiving your application.

www.sartorius.com/career

If you are a qualified individual with a disability or a disabled veteran and are unable or limited in your ability to use or access our website, you may request a reasonable accommodation to express interest in a specific opening. You can request reasonable accommodation by e-mail at accommodationrequest@sartorius.com

Sartorius is an equal opportunity employer and will consider all qualified applicants for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, or disability, or based on status in any other protected group of class.

If you are a qualified individual with a disability or a disabled veteran and are unable or limited in your ability to use or access our website, you may request a reasonable accommodation to express interest in a specific opening. You can request reasonable accommodation by e-mail at accommodationrequest@sartorius.com

About Sartorius

Sartorius is part of the solution in the fight against cancer, dementia, and many other diseases. Our technologies help translate scientific discoveries into real-world medicine faster, so that new therapeutics can reach patients worldwide.

We look for ambitious team players and creative minds, who want to contribute to this goal and advance their careers in a dynamic global environment.

Join our global team and become part of the solution. We are looking forward to receiving your application.
www.sartorius.com/careers