I am in legacies

a brilliant engineer dies in our world but the HIM in alternative world gets his memories and some perks. what will the new improved him do in this world?!. NOTE* this is my first time writing, so be lenient and let me know what you think. i also do not own anything besides my MC and some characters i will introduce later, and also some new plots in future. this is gonna be like a long novel. hope you're ready