Bigger, name brand tech companies have way more applicants than they can accept so they have a crude recruiter funnel that is tossing out resumes for any reason they can find. They're literally trying to turn thousands of resumes from hundreds of schools into curated packets of dozens of candidates. But recruiters don't know a thing about software engineering. At best they can keyword match a few buzzwords they got from some VP of engineering who hasn't actually coded anything in 20 years (if ever). If you don't have the right 3-4 signals (school and program prestige, internship number and prestige, GPA) it's in the bin you go. The actual front line hiring managers won't even see your resume.

Try applying to smaller companies. Smaller companies aren't going to land the candidate from a top 10 school who already interned at multiple Fortune 500 companies. But small shops need to hire talent too. They're digging deeper and they have to read the resumes more closely. There isn't much of an HR department, and the hiring manager might be sifting through the raw resumes themselves.

If you still want to land a big company job, you're going to need to bypass the HR filter by finding a direct line to the hiring managers. Maybe you have some friends or alumni you've met who are at the company and can refer you directly to a team. You can meet these people at networking events, recruiting fairs, or other social activities. Creativity, determination, and luck play a big factor.