OPT Associate Scientist Jobs
Associate Scientist roles in biotech, pharma, and research labs are among the most OPT-friendly positions in STEM. Most qualify for the 24-month STEM OPT extension, giving you up to three years of work authorization. Employers in these fields routinely sponsor H-1B visas for strong performers.
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Get Access To All JobsJob Title: Associate Scientist - Neuroprotection and Resilience
Location: Cambridge, MA
About the Job
We are looking for a highly qualified and motivated Associate Scientist to join the neuroprotection and resilience cluster in the Neurology Therapeutic Area for a one-year fixed contract, focused on discovering, validating, and developing therapies for neurodegenerative diseases including Alzheimer’s, Parkinson’s, and ALS. This position is laboratory-based and will involve executing in vitro and in vivo experiments to identify and test new therapeutics. The successful candidate will have experience working in neurodegeneration in an academic or industry setting, with experience to perform cell culture-based experiments using iPSC cells and/or cell lines and supporting animal studies in models of brain disease. The ideal candidate will also have experience running different biochemical/bioanalysis assays including ELISA based systems.
Join the engine of Sanofi’s mission — where deep immunoscience meets bold, AI-powered research. In R&D, you’ll drive breakthroughs that could turn the impossible into possible for millions.
Main Responsibilities:
- Establish and maintain human iPSC-based cell cultures (2D and 3D), including monocultures and tricultures, to support compound and antibody screening activities, modeling disease-relevant and neuroinflammatory mechanisms in the CNS.
- Measure compound exposure from mouse and NHP tissues and assess pathway modulation using biochemical and molecular assays including ELISA, Western blotting, and related methodologies.
- Support in vivo studies aimed at evaluating compound pharmacokinetics (PK) and pharmacodynamics (PD) across multiple routes of administration, including intraperitoneal (IP), oral (PO), and intravenous (IV) delivery.
- Design and execute experiments with scientific rigor; analyze and interpret data; and clearly communicate findings through internal and external presentations, reports, and team discussions.
- Develop new lab workflows, integrating automation and AI where possible.
- Collaborate effectively within a highly matrixed, cross-functional research environment across the Neuro Therapeutic Area and enabling research platforms.
- Contribute to the advancement of novel drug candidates from early exploratory discovery through preclinical development and transition toward clinical stages.
About You
Basic Qualifications
- Education: Bachelor's degree in Life Sciences or related scientific discipline
- Experience: Minimum 1 year of relevant laboratory experience in academic, research or biopharmaceutical setting
- Experience with in vitro models and tools
- Ability to maintain good laboratory research practice from lab execution to record keeping
Preferred Qualifications
- Animal Research: Experience working with rodent models and proficiency in tissue collection and dosing
- Advanced Lab Skills: Experience with in vitro models and tools beyond basic requirements
- Good organizational and communication skills
- Willingness to work both independently as well as on a team
- Interest and enthusiasm to actively participate in daily group and laboratory functions.
Why Choose Us?
- Bring the miracles of science to life alongside a supportive, future-focused team.
- Discover endless opportunities to grow your talent and drive your career, whether it’s through a promotion or lateral move, at home or internationally.
- Enjoy a thoughtful, well-crafted rewards package that recognizes your contribution and amplifies your impact.
- Take good care of yourself and your family, with a wide range of health and wellbeing benefits including high-quality healthcare, prevention and wellness programs and at least 14 weeks’ gender-neutral parental leave.
- Be part of a pioneering biopharma company that engages patients early in drug development and uses their insights to design studies that reflect real-world needs.
- Work at the forefront of drug discovery, harnessing cutting-edge AI, data, and digital platforms to push the boundaries of science.
- Help improve the lives of millions of people globally by making drug development quicker and more effective.
Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status; domestic violence victim status; atypical cellular or blood trait; genetic information (including the refusal to submit to genetic testing) or any other characteristic protected by law.
GD-SA
LI-SA
LI-Onsite
vhd
All compensation will be determined commensurate with demonstrated experience. Employees may be eligible to participate in Company employee benefit programs, and additional benefits information can be found here.
Job Title: Associate Scientist - Neuroprotection and Resilience
Location: Cambridge, MA
About the Job
We are looking for a highly qualified and motivated Associate Scientist to join the neuroprotection and resilience cluster in the Neurology Therapeutic Area for a one-year fixed contract, focused on discovering, validating, and developing therapies for neurodegenerative diseases including Alzheimer’s, Parkinson’s, and ALS. This position is laboratory-based and will involve executing in vitro and in vivo experiments to identify and test new therapeutics. The successful candidate will have experience working in neurodegeneration in an academic or industry setting, with experience to perform cell culture-based experiments using iPSC cells and/or cell lines and supporting animal studies in models of brain disease. The ideal candidate will also have experience running different biochemical/bioanalysis assays including ELISA based systems.
Join the engine of Sanofi’s mission — where deep immunoscience meets bold, AI-powered research. In R&D, you’ll drive breakthroughs that could turn the impossible into possible for millions.
Main Responsibilities:
- Establish and maintain human iPSC-based cell cultures (2D and 3D), including monocultures and tricultures, to support compound and antibody screening activities, modeling disease-relevant and neuroinflammatory mechanisms in the CNS.
- Measure compound exposure from mouse and NHP tissues and assess pathway modulation using biochemical and molecular assays including ELISA, Western blotting, and related methodologies.
- Support in vivo studies aimed at evaluating compound pharmacokinetics (PK) and pharmacodynamics (PD) across multiple routes of administration, including intraperitoneal (IP), oral (PO), and intravenous (IV) delivery.
- Design and execute experiments with scientific rigor; analyze and interpret data; and clearly communicate findings through internal and external presentations, reports, and team discussions.
- Develop new lab workflows, integrating automation and AI where possible.
- Collaborate effectively within a highly matrixed, cross-functional research environment across the Neuro Therapeutic Area and enabling research platforms.
- Contribute to the advancement of novel drug candidates from early exploratory discovery through preclinical development and transition toward clinical stages.
About You
Basic Qualifications
- Education: Bachelor's degree in Life Sciences or related scientific discipline
- Experience: Minimum 1 year of relevant laboratory experience in academic, research or biopharmaceutical setting
- Experience with in vitro models and tools
- Ability to maintain good laboratory research practice from lab execution to record keeping
Preferred Qualifications
- Animal Research: Experience working with rodent models and proficiency in tissue collection and dosing
- Advanced Lab Skills: Experience with in vitro models and tools beyond basic requirements
- Good organizational and communication skills
- Willingness to work both independently as well as on a team
- Interest and enthusiasm to actively participate in daily group and laboratory functions.
Why Choose Us?
- Bring the miracles of science to life alongside a supportive, future-focused team.
- Discover endless opportunities to grow your talent and drive your career, whether it’s through a promotion or lateral move, at home or internationally.
- Enjoy a thoughtful, well-crafted rewards package that recognizes your contribution and amplifies your impact.
- Take good care of yourself and your family, with a wide range of health and wellbeing benefits including high-quality healthcare, prevention and wellness programs and at least 14 weeks’ gender-neutral parental leave.
- Be part of a pioneering biopharma company that engages patients early in drug development and uses their insights to design studies that reflect real-world needs.
- Work at the forefront of drug discovery, harnessing cutting-edge AI, data, and digital platforms to push the boundaries of science.
- Help improve the lives of millions of people globally by making drug development quicker and more effective.
Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status; domestic violence victim status; atypical cellular or blood trait; genetic information (including the refusal to submit to genetic testing) or any other characteristic protected by law.
GD-SA
LI-SA
LI-Onsite
vhd
All compensation will be determined commensurate with demonstrated experience. Employees may be eligible to participate in Company employee benefit programs, and additional benefits information can be found here.
See all 338+ OPT Associate Scientist Jobs
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Get Access To All JobsTips for Finding OPT Sponsorship as an Associate Scientist
Target STEM-designated programs first
Your degree field determines STEM OPT eligibility. Life sciences, chemistry, biology, and biomedical engineering degrees qualify. Confirm your program's CIP code with your DSO before applying, so you know exactly how much OPT runway you're working with.
Apply to companies with active H-1B sponsorship history
Biotech and pharmaceutical employers like large CROs and research institutions file H-1B petitions regularly. Prioritize companies where Associate Scientists have historically transitioned from OPT to full sponsorship. Their internal processes for international employees are already established.
Address OPT status clearly and early
Don't wait for the offer stage to bring up work authorization. Mention your OPT status and STEM extension eligibility in cover letters. Hiring managers in research labs want to plan headcount without surprises during the background check phase.
Connect your degree directly to the role
Associate Scientist roles require a degree in a relevant scientific field. Make the connection explicit on your resume. A biochemistry degree applying to a cell biology role needs visible overlap in coursework, lab techniques, and research focus areas.
Start your job search 90 days before OPT starts
USCIS recommends applying for OPT up to 90 days before your program end date. Use that lead time to interview actively. Research lab hiring moves slower than tech, so building pipeline early prevents gaps in your employment authorization timeline.
Document your lab skills with specificity
Generic resumes don't get Associate Scientist interviews. List specific instruments, assays, and software platforms you've used. PCR, flow cytometry, HPLC, and ELN experience are concrete qualifiers that let screeners verify your fit without calling a reference.
Associate Scientist OPT: Frequently Asked Questions
Can I work as an Associate Scientist on F-1 OPT?
Yes. Associate Scientist roles are directly tied to STEM degree fields like biology, chemistry, biochemistry, and biomedical engineering, which means they qualify for standard OPT and typically for the 24-month STEM OPT extension. That gives you up to three years of work authorization without employer sponsorship, provided your employer is enrolled in E-Verify.
Do Associate Scientist employers commonly sponsor H-1B visas?
Many do, particularly in pharmaceutical companies, CROs, and established biotech firms. These organizations hire internationally at scale and have legal infrastructure in place for H-1B petitions. Smaller startups vary significantly. When browsing roles on Migrate Mate, you can filter specifically for employers with a verified sponsorship track record to focus your applications where conversion is most realistic.
What happens if my OPT expires before H-1B sponsorship comes through?
If your employer files your H-1B petition before your OPT expires and you have a valid EAD, you're covered under cap-gap protection through September 30 of that year. If the H-1B isn't filed in time, you'd need to stop working. This makes timing critical: your employer should initiate the H-1B process well before your STEM OPT end date.
Does my Associate Scientist job need to match my degree field exactly?
Not exactly, but it needs to be directly related. USCIS and your DSO review whether the role is in a field closely connected to your degree. A chemistry graduate working in analytical method development has a clear connection. A biology graduate moving into clinical data coordination may need a stronger written justification from both employer and DSO to satisfy OPT requirements.
How do I find Associate Scientist roles that are open to OPT candidates?
Many job postings don't specify OPT explicitly, but STEM-heavy employers in biotech, pharma, and contract research are the most receptive. Migrate Mate is designed specifically for F-1 OPT job seekers and surfaces Associate Scientist roles from employers who actively consider international candidates, saving you from spending hours filtering out positions that won't sponsor.