Full-Stack Developer for Web Tool

I’m looking for a full-stack developer to support an existing web tool as it grows. Much of the core functionality is already built, and I need help adding new features, improving the product, and maintaining the codebase. You should be comfortable working within an established system, collaborating on updates, and contributing to both front-end and back-end development. Experience with GitHub workflows, including branches, pull requests, and code reviews, is important.