Developer shares four engineering lessons from building AI, education, and healthcare apps

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A software developer has documented recurring engineering lessons drawn from building four distinct Next.js products across generative AI, job search, education, and clinic management domains. Klyro, an AI platform combining chat, web search, and image tools, required a unified system for authentication, billing, and credit management across multiple services. RoleMint is a job-search assistant that generates application materials while keeping humans in the approval loop, and BrightLearn is an open-source educational platform built around structured content and user progress tracking. FizioKinetoMaxim is a role-based CRM for a physiotherapy clinic, handling appointments, patient records, and audit trails using Next.js and Convex for real-time data. Across all four projects, the developer found that consistent user experience, data relationships, and access control were as critical as the core features themselves.

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