Here are some links to some internships:
Google Internships – close usually end of the year
E.J. Gallo Winery Internships – close usually in November
Hilmar Cheese Internships – close usually in November
NASA Internships – applications run throughout the year
Blizzard – Search for “Internships”
Microsoft New Technologist Internships
Code2040 – opening again February 2021
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You may also want to think about getting an REU (Research Experience for Undergraduate) – if you are thinking of going into research or getting your Higher Degree:
National Science Foundation (NSF) List of REUs