2027 Summer Software Engineering (SWE) Internships in California

Software Engineering internships for the Summer 2027 term whose primary location is in California. Fully remote roles aren't tied to a state, so they aren't listed here. Roles posted as SWE, software developer or SDE internships are listed here too. Postings that don't name a term are listed under Summer, since most internships run over the summer. Every listing comes from a company career page, and the list is checked every 6 hours: a role leaves it once the company takes the posting down or it is 31 days old. Each Apply button opens the posting on the employer's site. California holds the most internship listings of any state, concentrated in the San Francisco Bay Area and Silicon Valley, Los Angeles and Orange County, and San Diego. The Bay Area leans toward software, hardware and venture-backed startups, Los Angeles toward entertainment, media and aerospace, and San Diego toward biotechnology, defense and wireless technology.

Top companies: Cisco (6), Revel (5) and Waymo (5).