When considering employment as a junior backend developer, it's essential to understand that readiness is self-assessed. Projects like Wagtail or InvenTree may be exemplary but are not prerequisites for application. Many real-world scenarios in small to medium-sized businesses involve quick turnaround projects that resemble what a junior developer might have already created. It's crucial not to assume familiarity with specific projects and to seek intermediate complexity in personal projects that can showcase your skills effectively, leaning towards more than just beginner tutorials while still being approachable for your level.
The only person who can tell you when you're ready to apply for a job is you. There's no "do X and you're ready".
90% of real world projects for small-to-medium sized companies are quick turnaround small project sites like the ones you've probably been developing for years.
Never assume 'everyone' has heard about anything. I've never heard of either of the projects you're talking about, and I'm not interested enough to click on random GitHub links.
In terms of complexity, aim for a project that is a bit more complex than beginner tutorials but not as large as extensive open-source projects.
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