Sanofi Vaccines US Inc. Posted October 16, 2026

Scientist / Engineer

Waltham, United States Full time
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Sanofi Vaccines US Inc. is the source of truth for this posting and owns the application process. We surface normalized context and market comparison you won't find on the original listing.

About this opportunity

Job title: Scientist / Engineer

Location: Waltham, MA

About the job

The USA-mRNA LNP Drug Product Team supports the Formulation and Process Development group in Waltham, MA, and reports to the DP Group Lab Team Lead. We are seeking an individual with process development and/or formulation and good laboratory skills and scientific understanding of formulation development experience to contribute to bringing innovative new vaccines to the market.

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.

About Sanofi:

We’re an R&D-driven, AI-powered biopharma company committed to improving people’s lives and delivering compelling growth. Our deep understanding of the immune system – and innovative pipeline – enables us to invent medicines and vaccines that treat and protect millions of people around the world and are supported and enhanced through our diverse portfolio of medical device and diagnostic products. Together, we chase the miracles of science to improve people’s lives.

Main Responsibilities:

Lead the formulation optimization and/or process understanding of mRNA-containing lipid nanoparticle (LNP) formulation and production processes encompassing a wide range of different mRNAs and novel lipids.

Work closely with the Research team in transferring and accelerating new LNP composition formulation into CMC development.

Design and conduct small-scale multi-component LNP formulating experiments to understand the developability of new LNP formulations.

Lead the compilation of Developability package for new LNP formulations.

Develop initial formulation process for new LNP formulations.

Design and arrange studies to assess the stability of new LNP formulations.

Performing in-process drug product characterization.

Perform complex and routine analytical methods to characterize new formulations and to troubleshoot as needed.

Coordinate/Suggest/Introduce advanced LNP characterization analysis with the Analytical Sciences department

Support the Drug Product team to troubleshoot technical, formulation, and processing issues

Document development study set up, results, and conclusions within an electronic lab notebook

Tabulating and analyzing in-process and post-process characterization data

Summarize and present study progress, generated data, and analysis to other scientific team members and larger group meetings

Supporting the growth and expansion goals by setting up and installing new characterization and process equipment into new laboratories

About you

Basic Qualifications

Bachelor's in Engineering, Pharmaceutical Sciences, or Chemistry related science discipline, with 5 or more years of professional experience in formulation and/or process development

Master's in engineering, Pharmaceutical Sciences, or Chemistry related science discipline, with 3 or more years of professional experience in formulation and/or process development. Internships and co-ops experience will be considered

Ph.D. in Engineering, Pharmaceutical Sciences, or Chemistry related science discipline, with a minimum of 6 months of experience in formulation and/or process development. Academic experience will be considered

Key Skills, Abilities, and Competencies

Strong scientific understanding of formulation and process development in pharmaceutical related environment

Ability to independently design experiments, analyze complex datasets, and recommend development strategies

Strong organizational and communication skills with the ability to work and communicate cross-functionally

General understanding of common LNP production process and analytical characterization techniques is desirable, prior experience running these techniques is a plus

Desire to work in a fast-paced environment

Ability to be flexible and responsive to change, be a results-driven problem solver

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.

Help improve the lives of millions of people globally by making drug development quicker and more effective.

Work at the forefront of drug discovery, harnessing cutting-edge AI, data, and digital platforms to push the boundaries of science.

Sanofi US Services and its U.S. affiliates are Equal Opportunity employers committed to a culturally inclusive 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.

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Pursue progress , discover extraordinary

Better is out there. Better medications, better outcomes, better science. But progress doesn’t happen without people – people from different backgrounds, in different locations, doing different roles, all united by one thing: a desire to make miracles happen. So, let’s be those people.

Sanofi US endeavours to make our career center accessible to any and all users. If you are experiencing difficulty and need assistance applying online, please call 1-866-SANOFI2 (1-866-726-6342) or click here

US and Puerto Rico Residents Only

Sanofi Inc. and its U.S. affiliates are Equal Opportunity employers committed to a culturally inclusive 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.

North America Applicants Only

The salary range for this position is:

$85.500,00 - $123.500,00

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 details

Seniority
Not listed
Function
Manufacturing & CMC
Therapeutic area
Not listed
Location
Waltham, United States
Employment type
Full time

How this role compares

Computed from every other active Manufacturing & CMC role in our database, not just this employer's listings.

We currently track 3753 comparable Manufacturing & CMC roles across 173 biopharma companies.

3753Comparable roles tracked
3372Currently active
173Companies hiring similar roles
64Countries represented

Salary context

921 of 3753 peers report a salary range (USD, annualized)

Peers share this role's job function. This posting doesn't list a seniority level, so peers aren't narrowed by seniority either -- the range below may span more levels than usual.

This roleSubject Not listed on this posting
Lowest disclosed · Biologics Support Operator I (3rd Shift) · AbbVie $14/hr – $26/hr (≈ $29,099–$54,122/yr)
Highest disclosed · Head of Analytical Development · ModernaTX, Inc. $272,200/yr – $490,100/yr
Peer group range $41,610 – $381,150 (median $125,550)

Where these roles are based

Top locations among the 3753 comparable roles

United States1738
Germany251
India166
France146
Ireland137
China123

+ 58 more countries

Seniority mix

1670 of 3753 peers have a known seniority level

Senior431
Manager381
Intern/Fellow/Postdoc259
Associate162
Principal138
Associate Director119
Director115
Senior Director57
Executive/VP8

Therapeutic area mix

24 of 3753 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Vaccines & Infectious Disease15
Rare Disease3
Oncology3
Respiratory1
Dermatology & Aesthetics1
Immunology1

Similar opportunities

The closest matches from our peer group, ranked by how similar they are, not how well you'd qualify for them -- treat this as market context, not a guaranteed shortlist; a weak match is labeled as one below.

40%similar
AstraZeneca New Haven, Connecticut, United States of America
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40%similar
40%similar
Lilly Indianapolis, Indiana, United States of America Director
Same function Same country
40%similar
Lilly Indianapolis, Indiana, United States of America Director
Same function Same country
40%similar
Lilly Indianapolis, Indiana, United States of America Intern/Fellow/Postdoc
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40%similar
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Notify me about similar jobs

Get an email when we spot other openings like this one – same job function, comparable seniority, roles you'd actually want to see.

Or follow a whole field: get every new Manufacturing & CMC job in the United States, and choose locations and companies.

How we calculate "similar"

No black box, no LLM guesswork: a deterministic score built from four normalized attributes. Here's this role's own peer group at different match levels, so you can see the mechanism, not just the result.

Every comparison starts from the same 100-point budget: 25 for working in the same function, 40 for the same therapeutic area, 20 for the same or adjacent seniority, 15 for the same country. A dimension we can't confirm on both sides contributes nothing, never a guess, never a free pass.

40%
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AstraZeneca · New Haven, Connecticut, United States of America · Seniority not listed
Function Therapeutic area Seniority Country
40%
Director - Analytical Chemistry
Lilly · Indianapolis, Indiana, United States of America · Director
Function Therapeutic area Seniority Country
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Function Therapeutic area Seniority Country
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Merck · West Point, Pennsylvania, United States · Intern/Fellow/Postdoc
Function Therapeutic area Seniority Country
Unmatched or unknown dimensions score exactly the same: 0 points, never a partial guess. A role we know almost nothing about beyond its function bottoms out at 25%; it never inflates to 100% just because there's little to compare against. Seniority uses a defined ladder (Associate → Manager → Associate Director → Senior → Principal → Director → Senior Director → Executive/VP) so "Director" and "Senior Director" count as adjacent, but "Director" and "Executive/VP" do not.