I was once in a position that sounds very similar. The hardest part for me (besides dealing with the failed startup) was that the tech-jobs recruiting machine

I was once in a position that sounds very similar. The hardest part for me (besides dealing with the failed startup) was that the tech-jobs recruiting machine had changed considerably over my 9 years out of the market and my old bag of job hunting tricks wasn't working anymore. I took a course with these guys (https://www.outco.io/ https://www.outco.io/) and the job offers started rolling in within 3 weeks. Highly recommended.