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My chatbot builder is over-engineered and I love it

Lessons learned from building a chatbot builder called Fastmind, including the architecture, frontend, backend, infrastructure, and more.

In this post, I'll share the lessons I learned during this long journey and offer my advice on building software as a solo developer (spoiler alert: don't do what I did). I also use Sentry for error tracking, Lemonsqueezy for billing as my Merchant of Record so I don't have to worry about taxes, Clerk for authentication, and Convex for the database, cron jobs, and real-time features. Meanwhile, I have competitors who entered the market with a product similar to mine—not perfect, but they’re making money and collecting feedback while I was just building alone without a clear direction of what my users wanted.

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