Show HN: Open-source tech interview roadmap and study plans (github.com)

I built an open-source roadmap to help engineers prepare for technical interviews at any level (Junior to Senior+).

The repository aggregates resources into a structured format:

Study Plans: Time-based roadmaps (3-6 months) for different experience levels.

Role Guides: Specific paths for Backend, ML, Data, and DevOps engineering.

Problem Database: 1,400+ LeetCode problems tagged by company frequency and difficulty.

Company Playbooks: Specific notes for 200+ companies (FAANG, Fintech, Enterprise).

I also built a static site (using Astro) for better readability: https://roadmap.swadhin.cv

It is free, open source, and intended to be a practical reference rather than a paid course. Feedback is welcome.