Johnson & Johnson Posted September 21, 2026

Associate Scientist, Downstream Processing

Malvern, United States Full time
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Johnson & Johnson 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

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn more at jnj.com .

As guided by Our Credo, Johnson & Johnson is responsible to our employees who work with us throughout the world. We provide an inclusive work environment where each person is considered as an individual. At Johnson & Johnson, we respect the diversity and dignity of our employees and recognize their merit.

Job Function:

Discovery & Pre-Clinical/Clinical Development

Job Sub Function:

Biotherapeutics R&D

Job Category:

Scientific/Technology

All Job Posting Locations:

Malvern, Pennsylvania, United States of America

Job Description:

We are searching for the best talent for our Associate Scientist, Downstream Processing position, to be located in Malvern, PA.

About Innovative Medicine

Our expertise in Innovative Medicine is informed and inspired by patients, whose insights fuel our science-based advancements. Visionaries like you work on teams that save lives by developing the medicines of tomorrow.

Join us in developing treatments, finding cures, and pioneering the path from lab to life while championing patients every step of the way.

Learn more at https://www.jnj.com/innovative-medicine

Purpose: The Associate Scientist, Downstream Processing supports biologics purification process development within the Protein Therapeutics API Development (Downstream Purification) organization. This role will support purification process development for protein therapeutics. The Associate Scientist will assist in design, execution, and documentation of bench-scale laboratory experiments for protein purification operations including chromatography (affinity, ion-exchange, hydrophobic interaction) and filtration (UFDF, TFF, depth filtration). This person will contribute individually and as part of a team to meet project timelines and objectives with an emphasis on early-phase process development for preclinical therapeutics. The Associate Scientist will also maintain compliance with data documentation, safety, and other company policies and procedures.

You will be responsible for:

Defining work packages and streamlining purification development strategies for new molecular entity (NME) candidates to support early phase clinical manufacturing of biotherapeutics (monoclonal antibodies, bi/multi-specific antibodies, bioconjugates, and other)

Executing chromatography and filtration experiments with a focus on product quality attributes, product recovery, and manufacturing facility fit constraints

Assisting in process characterization, process scale-up, and technology transfer of downstream unit operations

Working cross functionally with upstream (cell culture), analytical development, formulation sciences, and manufacturing organizations to meet overall program deliverables and timelines

Authoring and reviewing technical or regulatory documents

Keeping accurate records, following instructions, and complying with company and EHSS policies.

Capturing data accurately and in a timely manner, maintain detailed records in compliance with applicable cGLP, safety, and environmental requirements.

Qualifications / Requirements:

Required:

B.S degree in Chemical Engineering, Biochemistry, Biotechnology, or related discipline with 0 - 5 years of relevant experience OR M.S degree in Chemical Engineering, Biochemistry, Biotechnology, or related discipline with 0 - 3 years of relevant experience.

Familiarity with protein purification, bioprocessing, or related scientific methodology

Basic understanding of experimental design, performance, and analysis

Self-motivated and eager to learn

Strong written and verbal communication skills

Highly organized and capable of working in both a team environment and individually with limited supervision

Proficiency in MS Office (Excel, Word, PowerPoint)

Preferred:

Solid understanding of statistical experimental design and analysis (DoE methodology)

Hands-on experience working with Akta fast protein liquid chromatography (FPLC) systems

Hands-on experience in protein bioprocessing techniques such as chromatography, filtration (depth, tangential flow, UFDF), and/or analytical methods (SDS-PAGE, UV/Vis, etc.)

Experience working with statistical design software such as JMP, minitab, or related programs

Johnson & Johnson is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, age, national origin, disability, protected veteran status or other characteristics protected by federal, state or local law. We actively seek qualified candidates who are protected veterans and individuals with disabilities as defined under VEVRAA and Section 503 of the Rehabilitation Act.

Johnson & Johnson is committed to providing an interview process that is inclusive of our applicants’ needs. If you are an individual with a disability and would like to request an accommodation, external applicants please contact us via https://www.jnj.com/contact-us/careers , internal employees contact AskGS to be directed to your accommodation resource.

If you are under 18 years of age you (the candidate) may need to obtain the necessary working papers or other documentation required by state law to start the assignment, as well as get a parent’s consent for the background check

#LI-Onsite

Required Skills:

Preferred Skills:

Analytical Reasoning, Biochemistry, Chemistry, Manufacturing, and Control (CMC), Clinical Trial Protocols, Collaboration, Data Quality, Drug Discovery Development, Execution Focus, Molecular Diagnostics, Pharmacogenetics, Problem Solving, Research Documents, Scientific Research, Technologically Savvy, Troubleshooting, Written Expression

Job details

Seniority
Associate
Function
Manufacturing & CMC
Therapeutic area
Not listed
Location
Malvern, 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 488 comparable Associate Manufacturing & CMC roles across 80 biopharma companies.

488Comparable roles tracked
469Currently active
80Companies hiring similar roles
31Countries represented

Salary context

110 of 488 peers report a salary range (USD, annualized)

Peers share this role's job function and a matching or adjacent seniority level -- not necessarily the same therapeutic area or country.

This roleSubject Not listed on this posting
Lowest disclosed · Distribution Associate 2 · Merck KGaA $25/hr – $28/hr (≈ $52,000–$58,240/yr)
Highest disclosed · Regional Manager - Megasys · Merck KGaA $220,000/yr – $250,000/yr
Peer group range $55,120 – $235,000 (median $136,750)

Where these roles are based

Top locations among the 488 comparable roles

United States273
India52
Germany17
Switzerland15
Netherlands15
Ireland15

+ 25 more countries

Seniority mix

488 of 488 peers have a known seniority level

Manager248
Associate130
Intern/Fellow/Postdoc110

Therapeutic area mix

7 of 488 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Vaccines & Infectious Disease5
Rare Disease2

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.

60%similar
Lilly Indianapolis, Indiana, United States of America Associate
Same function Same seniority Same country
60%similar
Devens Devens, United States Associate
Same function Same seniority Same country
60%similar
Bayer Pittsburgh Heilman, United States Associate
Same function Same seniority Same country
60%similar
Bayer Indianola, United States Associate
Same function Same seniority Same country
60%similar
Biogen Research Triangle Park, United States Associate
Same function Same seniority Same country
60%similar
Biogen Research Triangle Park, United States Associate
Same function Same seniority Same country

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.

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.

60%
Advisor, Data Scientist - CMC Data Products
Lilly · Indianapolis, Indiana, United States of America · Associate
Function Therapeutic area Seniority Country
60%
Manufacturing Associate I - Indianola- 1st Shift - 6am - 2:20pm (Indianola, Pennsylvania, US)
Bayer · Indianola, United States · Associate
Function Therapeutic area Seniority Country
60%
Manufacturing Associate III / IV, Purification (Nights)
Biogen · Research Triangle Park, United States · Associate
Function Therapeutic area Seniority Country
60%
Advisor- Project Engineer- Design Lead
Lilly · Houston, Texas, United States of America · Associate
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.