Apply online after referral?

Should I still apply online after getting referrals to Yelp and Amazon last week? Do I need to apply online to get my profile into the “system”? Also a shameless plug for myself, I’m looking for referrals to new grad SWE positions starting next Spring. Graduating from a top 10 computer engineering school, LC > 150, and currently grinding through EPI. Check out my repher.me profile at https://repher.me/r/-LoWHRbWY_ZQ1GYWIXCe