Jobs / United States / Pfizer INC
Sr Associate Scientist - Conjugation Chemistry
Pfizer INC · 🇺🇸 United States - New York - Pearl River
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 40 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 9 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
- No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
- What Pfizer INC paid sponsored hires in similar roles1 certified filing for “SENIOR SCIENTIST, ANALYTICAL CHEMISTRY” (Chemists) in CT: $121k–$121k, median $121k. Most were filed at wage level III (100%) — 3 lottery entries, ≈46% projected selection odds for cap-subject employers. The pay stated here ($68,600.00 to $114,300.00) is below what this employer usually pays sponsored hires for this role. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Pfizer INC
The US Department of Labor certified 40 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 9 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Pfizer INC →
About the role
Why Patients Need You Pfizer’s purpose is to deliver breakthroughs that change patients’ lives. Research and Development is at the heart of fulfilling Pfizer’s purpose as we work to translate advanced science and technologies into the therapies and vaccines that matter most. Whether you are in the discovery sciences, ensuring drug safety and efficacy or supporting clinical trials, you will apply cutting edge design and process development capabilities to accelerate and bring the best-in-class medicines to patients around the world. Role Summary As a Senior Associate Scientist in the Early Bioprocess Development within Pfizer Vaccine Research and Development, you will be at the center of our operations and you’ll find that everything we do, every day, is in line with an unwavering commitment to quality. You will join a large team of Scientists focused on conjugation process development for manufacturing carbohydrate-based conjugate vaccines. Primary duties include supporting the development and optimization of conjugation methods, purification, and analysis of intermediates and glycoconjugates using chemical and chromatographic methods. The individual will become a key contributor towards supporting the early development and scale up of glycoconjugate vaccines. Careful documentation of work and presentation of data is required. All work is to be done in a compliant manner according to SOP guidelines and cGMP/GLP regulations, where applicable. Role Responsibilities • Support the development, optimization and scale-up of glycoconjugate vaccine process development. • In process analysis of glycoconjugates and intermediates. • Continuously evaluate each process and technique to determine if it is robust, appropriate, and scalable. If an operation has shortcomings or can be improved, propose solution in discussion with other group members to advance objectives. • Collaborate with colleagues within Vaccine Research and Development organization including Early Bioprocess fermentation, purification, analytical and formulation development groups. • Participate in the technology transfer of developed process to clinical manufacturing site, both internally and externally, and provide the technical support as needed. • Fully document laboratory experiments in electronic notebook in a timely and compliant manner and prepare technical reports as needed. • Perform other duties as assigned. Qualifications Must have • BS degree in Chemistry/Biochemistry or related discipline with 3 to 6 years laboratory experience or MS degree in Chemistry/Organic Chemistry or related discipline with 0 to 4 years of experience. • Strong background in organic chemistry is required. • Knowledge and ability to operate and maintain relevant instruments, resolve technical problems related to instruments, and execution of analytical methods. • Independently analyze and provide conclusions regarding experimental data generated. • Strong verbal and written communication skills are required. • Experience with documentation of laboratory notebook in an electronic format. Nice To Have • Experience in carbohydrate chemistry • Hands on experience with various analytical techniques such as HPLC, MALS, UV-Vis, NMR, and other routine lab instruments. • Proficiency with personal computers including word processing, spreadsheets, PowerPoint, and relevant scientific software Other Work Details • Work Assignment: On Site • Relocation support available • Work Location Assignment: On Premise The annual base salary for this position ranges from $68,600.00 to $114,300.00. In addition, this position is eligible for participation in Pfizer’s Global Performance Plan with a bonus target of 7.5% of the base salary. We offer comprehensive and generous benefits and