PDHengineer contracts with eligible Subject Matter Experts to provide course material sold on our website. If you are interested in learning more about the benefits of becoming a PDHengineer Subject Matter Expert, allowing you to create a substantial passive income flow while giving back to your profession, complete our online application form or send an email to authors@PDHengineer.com. In the email, provide a copy of your resume, a short biography, and a list of your proposed topics for consideration. Our Review Team will be in contact generally within 72 hours with further information.