If you're a good developer, and it seems like a lot of people leaving the games industry are, it's not hard. Study up on your Cracking the Coding Interview, HackerRank, Leetcode, and similar stuff, and then just interview for Software Engineer positions. On your resume, list your previous experience as something like "Software Engineer, EA Games, 2016-present" (and include the names of any big games you worked on that people might know and be impressed by).