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Thermo Fisher Scientific

Scientist III – Mass Spectrometry / Proteomics

3747 N Meridian Rd, Rockford, IL 61101

Full-time · $83k–$139k (as posted)

First seen by offpeak October 4, 2026

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Work Schedule

Standard (Mon-Fri)

Environmental Conditions

Able to lift 40 lbs. without assistance, Cold Room/Freezers -22degreesF/-6degrees C, Laboratory Setting, Some degree of PPE (Personal Protective Equipment) required (safety glasses, gowning, gloves, lab coat, ear plugs etc.), Will work with hazardous/toxic materials

Job Description

About Thermo Fisher Scientific

As part of the Thermo Fisher Scientific team, you’ll discover meaningful work that makes a positive impact on a global scale. Join our colleagues in bringing our Mission to life every day to enable our customers to make the world healthier, cleaner, and safer. We provide our global teams with the resources needed to achieve individual career goals while helping take science a step beyond by developing solutions to some of the world’s toughest challenges.

DESCRIPTION

We are seeking a highly motivated Scientist III – Mass Spectrometry / Proteomics to join our R&D team. This role will focus on developing innovative sample preparation methods and automated workflows for mass spectrometry-based proteomics. The successful candidate will apply expertise in protein biochemistry, proteomics, MS sample preparation, and LC-MS analysis to develop and evaluate new workflows and technologies. A key focus will be the development and automation of robust, reproducible sample preparation methods, including workflows for limited and challenging biological samples. You will design and execute experiments, optimize sample preparation and automated workflows, analyze MS data, and troubleshoot technical challenges. Working in a cross-functional environment, you will collaborate with scientists, engineers, automation teams, Product Management, Manufacturing, and other functions to translate scientific concepts into practical and scalable workflows.

Key Responsibilities

Qualifications

Preferred Qualifications

Compensation and Benefits

The salary range estimated for this position based in Illinois is $83,300.00–$138,900.00.

This position may also be eligible to receive a variable annual bonus based on company, team, and/or individual performance results in accordance with company policy. We offer a comprehensive Total Rewards package that our U.S. colleagues and their families can count on, which includes:

For more information on our benefits, please visit: https://jobs.thermofisher.com/global/en/total-rewards