Embrace Your Possibilities: At Brown and Caldwell, an environmental engineering firm, we’re unlocking the potential of water and healthy environments to create thriving communities. Delivering this shared purpose starts with our people: We recruit individuals seeking to develop their skills and gain experience to build a strong foundation for the future. Through an internship at Brown and Caldwell, you’ll gain real-life, hands-on experience alongside our employee owners, engineers, scientists, consultants, and constructors who are driving positive changes for our clients and communities. Here you’ll find opportunities for impact, community that lifts, support to thrive, and trust in you as you embark on your career journey.
So, what’s possible for you?Brown and Caldwell offers Summer Internship opportunities to spend a summer working with the Brown and Caldwell team. We are seeking an individual interested in gaining practical, hands-on experience outside of the classroom. We promise a collaborative environment where you will grow as a professional under the guidance of your people manager and team and be trusted to support project objectives. Our work is interesting, challenging, wide-ranging in nature, and impactful for the communities we live in. We invite you to embrace your possibilities and join us to learn and develop with our team of nationally recognized experts!
The Process Mechanical Engineering Intern - Summer 2027 (Irvine, CA) role applies academic knowledge to real‑world technical challenges by supporting consulting teams on a variety of projects within an assigned technical discipline. This role works alongside experienced technical professionals to assist with research, analysis, documentation, and project support activities that contribute to the successful delivery of client and internal initiatives. The Technical Services intern gains exposure to technical consulting work, multidisciplinary collaboration, and the project lifecycle while supporting tasks such as data analysis, technical evaluations, research, and preparation of technical materials. This role provides hands‑on learning opportunities in a professional consulting environment. This role works under close supervision with regular guidance from more experienced colleagues or supervisors.
- Collaborate with cross‑functional and multidisciplinary teams to support project planning and execution.
- Support day-to-day activities within assigned projects and/or functional area
- Participate in internal and external meetings by taking notes, tracking action items, and supporting follow‑up activities.
- Perform technical or support tasks within assigned functional area and technical specialty in support of project and team needs
- Successfully manage and deliver assignments on time.
- Perform a variety of technical and operational tasks assigned to support evolving business and team needs
- Attend and complete Intern Workshops and Intern Summer Series Sessions
- Complete intern capstone project assignment
- Flexibility to adapt and execute various additional assignments based on evolving needs.
Skills and Competencies
- Ability to organize information, maintain documentation, track tasks, and pay attention to detail when completing assigned work
- Basic written and verbal communication skills with the ability to clearly share information, ask questions, and document notes or action items.
- Ability to apply academic knowledge to practical, real‑world technical challenges
- Familiarity with technical, scientific, or data analysis tools relevant to the assigned discipline, with a willingness to learn new tools
- Ability to work effectively as part of a team, collaborate with others, and contribute positively in a collaborative technical environment
- Adaptability, curiosity, and eagerness to learn in a consulting and project‑based environment
- Interest in consulting, client engagement, and technical communication
- Adaptability and willingness to learn new tools and methodologies
- Demonstrates a positive attitude, follows instructions, respects confidentiality, and behaves professionally in a workplace setting
- Attend and complete Intern Workshops and Intern Summer Series Sessions
- Complete intern capstone project assignment
- Flexibility to adapt and execute various additional assignments based on evolving needs.
Experience
- No prior professional experience required.
- Currently enrolled in an accredited undergraduate or graduate degree program in Engineering (Mechanical, Electrical, Civil, Software), Science (Biology, Chemistry, Physics, Environmental Science Data Science) or a related field is required.
- Continued enrollment in accredited under or graduate degree program in Engineering (Mechanical, Electrical, Civil, Software), Science (Biology, Chemistry, Physics, Environmental Science Data Science) or a related field post internship is required.
- GPA equal to or higher than 3.0 on a 4.0 scale, or the equivalent is required
- Attend site visits with the team as requested. This may include site visits to treatment plants and other industrial facilities to support with various tasks such as sampling and condition assessments.
Salary Range: The hourly pay range for this position is based on the employee’s primary work location and may be more or less depending upon skills, experience, and education. These ranges may be modified in the future.
Location A: Hourly $18.40 - $25.20
Location B: Hourly $20.20 – $27.70
Location C: Hourly $22.00 – $30.20
You can view which BC location applies to you here. If you have any questions, please speak with your Recruiter.
Benefits and Other Compensation: We provide a comprehensive benefits package that promotes employee health, performance, and success which includes medical, dental, vision, short and long-term disability, life insurance, an employee assistance program, paid time off and parental leave, paid holidays, 401(k) retirement savings plan with employer match, performance-based bonus eligibility, employee referral bonuses, tuition reimbursement, pet insurance and long-term care insurance. Click here to see our full list of benefits.
About Brown and Caldwell
Headquartered in Walnut Creek, California, Brown and Caldwell is a full-service environmental engineering and construction firm with 50 offices and 2,100 professionals across North America and the Pacific. For 75 years, we have created leading-edge environmental solutions for municipalities, private industry, and government agencies. We strive to be the company of choice—to our clients, who benefit from our passion for delivering exceptional quality, and to our employees, present and future, who share our commitment to client service, collaboration, and innovation. Join us, and you will find a home where you can do your best work, reach new levels of expertise, and enjoy exceptional development opportunities. For more information, visit www.brownandcaldwell.com
This position is subject to a pre-employment background check and a pre-employment drug test.
Notice to Third Party Agencies: Brown and Caldwell does not accept unsolicited resumes from recruiters or employment agencies. In the event a recruiter or agency submits a resume or candidate without a previously signed agreement and approved engagement request with Brown and Caldwell, Brown and Caldwell reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency.
Brown and Caldwell is proud to be an EEO/AAP Employer. Brown and Caldwell encourages protected veterans, individuals with disabilities, and applicants from all backgrounds to apply. Brown and Caldwell ensures nondiscrimination in all programs and activities in accordance with Title VI of the Civil Rights Act
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Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.
Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.
Brown and Caldwell Irvine, California, USA Office
Irvine, United States
Brown and Caldwell Los Angeles, California, USA Office
Los Angeles, United States
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