Add features that show CS understanding:
Caching: "I added Redis caching for frequently accessed data, reducing API calls by %."
Optimization: "I implemented pagination instead of loading all records, improving load time from s to ms."
Error handling: "I added retry logic with exponential backoff for flaky API calls."
Testing: "I wrote unit tests for core business logic with % coverage."
You don't need all of these. Pick - and implement them well. Then talk about them in interviews.
Career Changer Tip: Interviewers remember candidates who explain WHY they made technical choices.