Send me your Java or Spring Boot service (GitHub link or zip). I review the code for bugs, security issues, slow queries and missing tests, fix the most important problem you name, and send a pull request with a short written report of what I found and what to do next. Good for a stuck API, a failing deploy or a second opinion before launch. Fixed scope: one reported issue plus a review of up to 5,000 lines. Larger codebases: message me for a quote.