AKirtesh posts 10‑week DSA roadmap

- @AKirtesh published a 10‑week backend DSA roadmap covering arrays/strings (sliding window), trees/graphs (BFS/DFS), dynamic programming and basic system design to reach interview readiness. - @0xlelouch_ separately posted a junior SWE system‑design walkthrough for a todo app covering APIs, JWT auth, DB schema, pagination, validation and error handling. - The paired threads provide a practical study plan and a small system‑design example for coding interviews and junior system design evaluation (x.com) (x.com).