Freelance Developer Transitioning to SWE Career

College graduate with no formal CS education. I've been freelancing for roughly 10 years, working as an independent contractor for boutique digital agencies, early startups and other small businesses. Even some game dev for indie game studios. I want to transition from a freelance dev/webmaster type of role, to a better-paid and more formal SWE career. Collaborating with and learning from a team of engineers, to build and deploy products at larger scales. On the tech side of things, I've been very much been a 'code only' person. Usually working independently (sometimes alone, sometimes in a small group of developers) with feature work and closing tickets with little regard to formal processes. Hopefully this can be counteracted with my soft skills client-facing experience from agencies and freelance work, having spoken directly with clients to better understand their problems in high-level discussions to meet their goals. I am open to learning from more experienced engineers to obtain more marketable skills in automation, testing, and cloud services. And understanding the team dynamics of a larger company. Not interested in contract work or high-risk ventures.