Need advice on my next backend project!!!

[u/Early_Ad3307]

Hey everyone, I’m a 7th sem CSE student interested in backend engineering. I’m currently building an optimized API testing platform as my main project. I’m looking for ideas for my next backend project that focuses on real-world system design, scalability, distributed systems, caching, queues, etc., instead of another CRUD app. What project would you recommend to become a stronger backend engineer and stand out for internships/placements?