Digital marketing intern Jobs in Vallejo, CA

Summer Marketing Intern

Harder Mechanical is one of the nation's largest mechanical contractors with an outstanding reputation for working safely, meeting tough schedules, and delivering quality projects. Based in Portland, Oregon, we work primarily in the 11 western states with regional offices in Reno, NV; Phoenix, AZ; Richmond, CA; and Salt Lake City, UT.

As a Summer Marketing Intern, you will work directly with our marketing manager, marketing specialist, and business development team to support marketing department projects at Harder. This internship will involve a large marketing data management project for our business development team, as well as general marketing projects and exposure to the day-to-day responsibilities of an entry-level Marketing Coordinator in the AEC (Architecture, Engineering, and Construction) industry.

This position is full-time, in the office, and paid hourly. Please submit a cover letter along with your resume. Internship applications will be reviewed on an ongoing basis until March 13, 2026.

Marketing interns at Harder perform the following daily tasks :

• Work with the marketing manager and marketing specialist to develop and edit content for company marketing collateral including project descriptions, resume bios, boilerplate content, and website pages
• Assist with marketing folder organization and clean-up
• Support the business development team by transferring marketing information into Harder's in-house project management software, PRIME
• Assist with updating PowerPoint presentations into the current company format
• Assist with updating additional marketing materials in Adobe InDesign (if familiar)
• Work with project team leaders to gather content for project description and website / social media updates
• Edit and proofread company proposals, statement of qualifications, pre-qualification packages, and other internal and external company collateral
• Assist with additional marketing projects as needed

What you'll need to be successful in this role :

Education / Experience :

HMC reserves the right to perform a drug screening and background check, as may be required, and this offer may be contingent on passing a drug screening and background check.

No recruiters. No phone calls, please.

About Harder

Harder Mechanical Contractors is an equal opportunity employer. All qualified applicants will receive consideration without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, genetic information, veteran status, or any other characteristic protected by federal, state or local nondiscrimination laws. Our hiring policy reflects and affirms Harder's commitment to the principles of fair employment. Harder does not discriminate regarding the terms and conditions of employment based on any characteristic protected by federal, state or local nondiscrimination laws.

It is Harder's policy to maintain a drug and alcohol-free work environment. Employment offers are conditional upon successfully passing a drug and alcohol test, background checks, reference checks, and as required by law, regardless of citizenship or national origin, documented proof of authorization to work in the United States.