The continuing education arm of Sierra College will offer a software developer boot camp that will teach people how to write back-end code. Back-end developers build or maintain the technology behind websites and apps. The 18-week program will be made up of three six-week courses. The program is designed to give people the skills to get an entry-level job as a software developer or Java programming language developer, said Shannon Sowby, spokeswoman for Promineo Tech, the Phoenix-area company that…