If you are having experience then you must have knowledge of what all projects companies expect from an experienced candidate.
If you are a fresher with no job experience then you must work on projects that give some essence of your real-life problem-solving skills like making a gesture recognition system or it can face identification system.
You can start watching this Data Science project to know the insights of Data Science that will assist you in making your projects:
You can also take Data Scientist which consist of Industry Oriented Real-Time projects prepared by Industry experts.