Back in 2015, we hired someone who is an undergraduate ME student. I trained him, and I was amazed at how fast he learned, and he is now one of our devs. Your background in Mechanical Engineering will help you a lot, with the right training, you can learn a lot of things fast. Knowing the technologies, you stated above already gives you a solid foundation. If you need help getting training materials to strengthen your skill set, feel free to contact me.