Yes it will help you transition from Chemistry to Computer Science in terms of jobs and reputation. You can probably complete it faster than 3 years if you wan

Yes it will help you transition from Chemistry to Computer Science in terms of jobs and reputation. You can probably complete it faster than 3 years if you want. The key to a software engineering job these days is algorithms and data structures as well as the programming. You can of course learn all of this outside of a masters degree. Since you have some time you should do that, then maybe you can focus on VR, GPUs and 3D graphics. I think VR and 3D graphics might require math e.g. linear algebra and geometry so that might be something to consider as well. I would pick a program where you can write a masters thesis on a graphics/VR project and hopefully do that at a place that has a research group in that area.