CMS Intern - Construction

MWH is a leading water and wastewater treatment-focused general contractor in the US with a rich history dating back to the 19th century. Fueled by the mission of Building a Better World, our teams are rapidly growing across the nation.

As a company committed to our team's well-being and growth, we offer a supportive work environment, opportunities for advancement, and the chance to contribute to a mission that shapes the future. Your expertise and ambition are valued here.

The work we do matters. The critical systems infrastructure we build changes lives, betters' communities, and improves ecosystems. If you're passionate about this, we want to hear from you!

About the Role

MWH is seeking an CMS Intern - Construction to support construction project work from our Corona, CA or Phoenix, AZ office. This internship provides hands-on exposure to construction operations and office administration within a fast-paced, team-oriented environment.

The Administrative Intern will play a key support role by assisting with day-to-day administrative, documentation, and coordination activities that help keep projects running efficiently. This role is ideal for someone interested in construction, business operations, or project administration.

Learning Opportunities & Responsibilities

Project & Office Administration

• Assist with general administrative support for the project team, including document preparation, filing, and data entry
• Support document control efforts, including organizing and maintaining electronic and hard-copy project files
• Help track and log project documents such as RFIs, submittals, and correspondence
• Assist with meeting coordination, including preparing agendas, taking meeting minutes, and distributing follow-up items
• Update internal trackers, logs, and reports to support project transparency and organization

Communication & Coordination

• Serve as an administrative liaison between project team members, subcontractors, and internal departments
• Assist with preparing reports, presentations, and written communications
• Support onboarding and coordination efforts for new team members, vendors, or visitors to the job site

Procurement & Cost Support

• Assist with compiling vendor quotes, invoices, and basic cost documentation
• Help organize bid information, supplier lists, and procurement records
• Support the team with data gathering for estimates, change documentation, and reporting needs

General Business & Operations Exposure

• Gain insight into construction project workflows, scheduling, a