Full-Stack Developer for Interactive Website

Job TitleSenior Full-Stack Developer Needed: Hand-Coding Pro for Large-Scale Custom Web Project (Hostinger Horizons)Project OverviewI am seeking a highly skilled, experienced full-stack developer to clean up my interactive website’s backend, resolve calculation bugs, and fully migrate the platform over to the Hostinger Horizons environment.PLEASE EVALUATE THIS SCOPE CAREFULLY BEFORE COMMITTING TO A PRICE: This is a substantial, highly unique platform that has never been built before. It is a large-scale project with a massive amount of depth, hidden complexities, and "nooks and crannies." The project holds incredible growth potential with multiple upcoming spin-off branches and future expansion avenues. I need a true engineering partner who can scale with this asset. Successful completion of this initial cleanup and migration will lead directly to steady, long-term employment and a reliable monthly retainer.CRITICAL NOTE FOR APPLICANTS: I am looking for a real, traditional software engineer. Do NOT apply if your workflow consists of typing requests into Hostinger's AI builder to generate sections or pages for me. I can use the AI prompt on Hostinger myself. I am hiring a professional to write, debug, and optimize real, production-ready backend code.I use ChatGPT as a high-level architectural advisor for this project. You must be comfortable reviewing, auditing, and executing detailed, advanced code logic and technical prompts that I provide.Scope of Work1. Technical Code Audit & Backend Bug FixesConduct a thorough, manual code review of the existing backend source architecture.Proactively identify and fix any broken elements found during your audit, even if they aren't explicitly listed.Run end-to-end testing to ensure all interactive calculators, calculation scripts (birth charts), and dynamic quizzes function flawlessly with zero script errors.Provide professional engineering feedback on performance bottlenecks or bad practices that need to be refactored.2. Hostinger Horizons Migration & ConfigurationSecurely migrate all website files, user databases, and complex digital assets over to the Hostinger Horizons hosting environment.Properly configure domain routing, SSL certificates, and server database rules to ensure optimal script speed and zero downtime under heavy traffic loads.3. AI-Collaborative Engineering & Custom FeaturesReview, refine, and manually deploy advanced features or backend logic patterns provided via my custom ChatGPT blueprints.Implement a highly scalable structural framework to easily add new categories, sub-pages, and site links as requested to support the site's massive growth potential.Integrate additional secure payment processing links (paylinks) for on-site user transactions.4. Monetization & Ad Network OptimizationSet up clean code injection areas to smoothly host and run external advertising scripts (such as Google AdSense, Adsterra, etc.).Ensure strict adherence to performance rules, explicitly implementing asynchronous script loading so multiple ad networks do not degrade site speed or break interactive user elements.Required Technical SkillsProven Full-Stack Engineering: Expert-level mastery of core backend frameworks (e.g., Node.js, Python, PHP, or custom JavaScript frameworks).Hostinger Horizons Infrastructure: Deep familiarity with deploying, testing, and managing applications inside Hostinger's environment without relying on automated site builders.Interactive Tool Architecture: Experience troubleshooting complex, data-driven calculation engines (like chart generators, interactive quizzes, or data calculators).Clean Code Practices: Absolute ability to translate abstract AI-generated logic instructions into secure, hardened, human-written source code.Project Terms & LogisticsMilestone Payments: Project funding will be tied directly to functional milestones. Payment will only be released from escrow once a milestone's code has been deployed and verified bug-free in testing.Zero-Tolerance for AI Laziness: If it is discovered that you are simply copy-pasting my requests into an automated AI site builder rather than writing professional code, the contract will be terminated immediately.Future Horizon: As stated, this is a long-term vision. We are looking for our "forever tech person" to run, protect, and continuously build onto this platform on a steady basis.To Apply, Please Provide:Confirm that you are a hand-coding developer who builds and debugs applications directly in code editors, rather than relying on automated AI prompt builders.An acknowledgement that you understand this is a large, highly complex site with extensive room for expansion, and that you have reviewed the scope carefully before quoting.Your estimated timeline and flat-rate quote for the initial cleanup and migration phase.