Senior Scientist I, Chemistry salary in Illinois
A real-employer view of Senior Scientist I, Chemistry pay, clustered from DOL OFLC certified filings. Variants like Senior, Lead, and II/III titles fold into this cluster — the wage range below reflects all of them.
Senior Scientist I, Chemistry in Illinois: actual employer-disclosed pay
Public records from 14 certified H-1B Labor Condition Applications filed with the U.S. Department of Labor. Median offered wage: $121,189. Every figure below is an actual offered salary an employer attested to under federal law.
By DOL wage level
DOL classifies every offer into one of four wage levels based on the role's experience and skill requirements.
| Level | Filings | Median offer |
|---|---|---|
| Level II — qualified | 2 | $80,923 |
| Level III — experienced | 5 | $122,548 |
| Level IV — fully competent | 7 | $124,201 |
Top employers filing for this role
Companies with the most certified filings for Senior Scientist I, Chemistry in Illinois. Median offer is across all of that employer's filings.
| Employer | Most-filed title | Filings | Median |
|---|---|---|---|
| AbbVie Inc. | Senior Scientist I, Chemistry | 5 | $131,026 |
| Fresenius Kabi USA, LLC | Principal Scientist, Formulation | 3 | $110,490 |
| Entegris, Inc. | Sr. Scientist, Formulation | 1 | $78,853 |
| EVONIK CORPORATION | Scientist | 1 | $82,992 |
| LanzaTech Inc. | Scientist | 1 | $100,000 |
| ABBVIE INC. | SENIOR SCIENTIST I, BIOANALYSIS | 1 | $128,000 |
| The University of Chicago | Staff Scientist | 1 | $69,000 |
| Nexus Pharmaceuticals Inc. | Lead Scientist, Formulation Development | 1 | $142,000 |
Recent sample filings
A snapshot of recent certified offers. Each line is a real, public, verifiable record.
- Senior Scientist II at AbbVie Inc.$155,000North ChicagoWage Level IVDecided Sep 30, 2025I-200-25266-329868
- Principal Scientist, Formulation at Fresenius Kabi USA, LLC$119,829Melrose ParkWage Level IVDecided Sep 17, 2025I-200-25253-300179
- Sr. Scientist, Formulation at Entegris, Inc.$78,853AuroraWage Level IIDecided May 30, 2025I-200-25142-008496
- Scientist at EVONIK CORPORATION$82,992MapletonWage Level IIDecided May 15, 2025I-200-25128-954577
- Senior Scientist I, Analytical Chemistry at AbbVie Inc.$131,026North ChicagoWage Level IVDecided May 7, 2025I-200-25120-920128
- Scientist at LanzaTech Inc.$100,000SkokieWage Level IIIDecided May 5, 2025I-200-25118-913202
- Senior Scientist, I - Analytical R&D at AbbVie Inc.$135,000North ChicagoWage Level IIIDecided May 2, 2025I-200-25115-904249
- SENIOR SCIENTIST I, BIOANALYSIS at ABBVIE INC.$128,000NORTH CHICAGOWage Level IIIDecided Apr 9, 2025I-200-25092-824347
Source: U.S. Department of Labor, Office of Foreign Labor Certification. Disclosed wages reflect what employers attested to pay; actual paid wages may differ. Only certified filings are shown — denied and withdrawn cases are excluded.