Here you can find information on each step in the hiring process for a job at Sigma-Aldrich, including applying for jobs, interviews, and pre-employment testing, along with tips and advice on each step in the hiring process.

Apply Online

When you submit your application to Sigma-Aldrich online, make sure you tailor your résumé to match the description in the job opening. Make sure you have the details of your past working environments handy. Lastly, remember to review your application for mistakes.


The interview is the bread and butter of the hiring process. The interview lets you bring your on paper persona to life and make you stand out from the crowd. Don’t be afraid to let your personality shine through.

Online Psychometric Assessments

 Some companies test applicants for employment to determine if the candidate is a good match for their job vacancies. 

How to Ace Your Interview

Learn how to succeed at your Sigma-Aldrich interview with our top tips.

Be True to Yourself

Be honest throughout your interview. Interviewers can tell if you’re not being authentic.

Take Your Time

Consider your answers carefully. Don’t rush through every question.


These positions receive many applications yearly:

Engineer Human Resources Administrator Customer Service Assistant
Financial Analyst Management Trainee Executive Assistant

Prepare for Sigma-Aldrich’s Common Pre-Employment Tests

These are some of the most popular pre-employment tests used by Sigma-Aldrich:

Personality/Job Fit Promotional Tests Supplements
Correctional Tests Assessment Tools Specialized Item Sets

Company Details

Company Address: 3050 Spruce St

City: St Louis

State: MO

Postal Code: 63,103

Phone Number: (314)771-5765


Industry: Manufacturing

Sub-industry: Allied and Chemical Products

SIC Code: 2,869