Intern​/Co-Op - Civil​/Environmental Engineering

Overview

Do you want to build an impactful career to change the world for the better?

Geosyntec has an exciting opportunity for an Intern / Co-Op - Civil / Environmental Engineering in our Oakland, Walnut Creek, Orange County or Los Angeles, CA office. The position offers the opportunity to apply engineering (civil, geotechnical, environmental, and water resources) academic knowledge to real-world situations while also learning the business skills needed for a successful consulting career. The position is full-time (40 hours/week) for approximately 13 to 15 weeks during the summer semester of 2026.

Preferred candidates would have the ability to return to the position for up to two additional semester rotations during their undergraduate or graduate studies. Candidates are responsible for coordinating their own transportation to and from the office.

Geosyntec is an innovative, international engineering and consulting firm serving private and public-sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure. Our engineers, scientists, technical and project employees serve our clients from offices across the world. Ranked by ENR as one of the top environmental engineering design firms, Geosyntec is internationally known for its technical leadership, broad experience, and exceptional client service.

We invest in our people. Each employee is unique, and your career at Geosyntec will be too. We offer competitive pay and benefits, and well‑being programs to support you and your family.

• Assist with engineering calculations using computer‑based technical tools.
• Technical writing of reports, letters, memoranda, plans, specifications, and proposals.
• Data input and analysis, including preparing maps, tables, and figures.
• Follow instructions and interact with engineers, geologists, office administrative staff, CADD operators (draftsmen), contractors and construction personnel.
• Potential for fieldwork such as soil and groundwater sampling, stormwater inspections, and drilling and contractor oversight.
• Support AI and LLM‑driven initiatives.
• Drive personal, company, and rental vehicles to client or company project or office sites, and other business locations, as needed.

• Currently registered in a Bachelor's or Master's university degree program in a relevant engineering or related‑STEM discipline. (required)
• Degree focus area in civil, geotechnical, environmental or water resources engineering. (preferred)

• Experience with Arc View, CADD, and/or Microsoft Office. (preferred)
• Experience in AI and Large Language Model functional literacy. (preferred)
• Outstanding academic credentials and exceptional interpersonal, technical writing, oral and written communication and problem‑solving skills. (required)
• Valid U.S. driver’s license, reliable transportation, and satisfactory driving record for business travel to project sites. (required)

Minimum: $22.98/hour / Maximum: $32.18/hour (Oakland, Walnut Creek, Los Angeles, CA)

Minimum: $24.02/hour / Maximum: $33.63/hour (Orange County, CA)

The typical base salary range for this position is just one component of Geosyntec’s total compensation package for employees. Actual compensation will be determined based on education, experience, skill set and location.

We offer a comprehensive benefits package including paid holidays, vacation, sick, and personal paid time off, medical, dental, vision, life, and disability insurance, 401(k), and other benefits to eligible employees.