Sanofi US Services Inc. Posted November 4, 2026

Scientist, Downstream Process Scale-Up

Waltham, United States Full time
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About this opportunity

Job Title: Scientist

Location: Waltham, MA

 

About the Job: 

The Genomic Medicine Unit (GMU) Chemistry, Manufacturing and Control (CMC) group at Sanofi is dedicated to the establishment of best-in-class manufacturing platforms to support development of life-changing advanced cell and gene therapy products, including recombinant AAV vectors and non-viral vectors. This organization encompasses vector and cell line engineering, upstream and downstream process development, analytics, and clinical manufacturing support.

The GMU purification process development group is responsible for the development of AAV viral vector processes and for supporting viral vector purification for next-generation production platforms to enable high-dose gene therapy programs. The Scientist role requires leadership both inside and outside the laboratory and will rely on industry expertise and the exploration of novel technologies in order to build robust and efficient purification processes consistent with patient safety standards.

We are looking for a candidate with hands-on experience executing downstream purification at pilot and large scale, with a strong background in scale-up and some exposure to technology transfer. Experience across biologics modalities is valued, and experience with AAV or other viral vectors is a plus.

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. Together, we chase the miracles of science to improve people’s lives.

Main Responsibilities:

Lead the execution and scale-up of downstream purification manufacturing, from 50-L pilot through 2000-L scale, partnering with CMC project teams on logistical planning for pre-clinical manufacturing campaigns

Lead the authoring, review, and revision of SOPs, batch records, and batch reports for pilot and large-scale downstream operations

Perform data analyses supporting pilot and large-scale DSP manufacturing, and contribute to technical reports and internal/external presentations

Lead troubleshooting of manufacturing issues and communicate findings to appropriate working groups

Maintain critical process equipment and consumables to minimize downtime, and lead or support evaluation of new process technologies to improve yield, cost, and cycle times

Support digital transformation and continuous improvement initiatives within GMU CMC (e.g., electronic batch records, process data capture, workflow enhancements)

Develop and maintain advanced knowledge of column chromatography, filtration, and related purification technologies; mentor junior staff and foster a collaborative team culture

About You:

Education:

Master’s degree in chemical or biochemical engineering or related disciplines with a minimum of 2 years of relevant experience or a bachelor’s degree with a minimum of 4 years of relevant experience

Experience & Technical Skills:

Significant experience of working with pilot- and large-scale DSP manufacturing unit operations

Significant experience, knowledge, and understanding of purification technologies and operations. Required: Hands-on experience with Chromatography and Tangential Flow Filtration (TFF)

Preferred: Experience with Depth Filtration and/or Viral Filtration/Inactivation.

Experience with process technology transfers and performing gap analyses and risk assessments

Expertise in drafting batch records and SOPs (required); experience authoring technical reports (preferred).

Preferred Qualifications:

Experience in AAV purification development

Experience in CMC and drug development

Experience with digital solutions to enable efficient manufacturing operations (e.g. electronic batch records, electronic notebooks, etc.). Knowledge of product comparability, target product profile and quality risk assessment activities

Knowledge of basic analytical tools such as UV spectrophotometry and DLS particle sizing

Ability to work in Biosafety Level 2, follow safe lab procedures and maintain good laboratory practices (GLPs)

Soft Skills:

Ability to work under minimal supervision and function within a collaborative, team-oriented environment

Excellent organization and communication skills

Ability to communicate and represent group in diverse, multi-functional meetings

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 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 3428 comparable Manufacturing & CMC roles across 175 biopharma companies.

3428Comparable roles tracked
3174Currently active
175Companies hiring similar roles
61Countries represented

Salary context

813 of 3428 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 · Operator – Plant Utilities · Lilly $13/hr – $28/hr (≈ $26,998–$58,302/yr)
Highest disclosed · Head of Analytical Development · ModernaTX, Inc. $272,200/yr – $490,100/yr
Peer group range $42,650 – $381,150 (median $127,400)

Where these roles are based

Top locations among the 3428 comparable roles

United States1570
Germany211
India155
France149
Ireland129
China125

+ 55 more countries

Seniority mix

1516 of 3428 peers have a known seniority level

Senior408
Manager359
Intern/Fellow/Postdoc208
Associate149
Principal129
Associate Director105
Director104
Senior Director48
Executive/VP6

Therapeutic area mix

22 of 3428 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Vaccines & Infectious Disease13
Rare Disease3
Dermatology & Aesthetics2
Oncology2
Immunology1
Respiratory1

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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
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Lilly Indianapolis, Indiana, United States of America Associate
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40%similar
Merck West Point, Pennsylvania, United States of America Principal
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Merck West Point, Pennsylvania, United States Intern/Fellow/Postdoc
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Notify me about similar jobs

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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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Lilly · Indianapolis, Indiana, United States of America · Director
Function Therapeutic area Seniority Country
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AbbVie · North Chicago, IL · Senior
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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.