Building a $1,035 FE Civil + PMP Certification Stack: React, Supabase, and Self-Hosted Infrastructure Instead of $3,000 SaaS

I built a vertically integrated certification prep system for FE Civil and PMP exams that cost $1,035 total—less than a third of School of PE's pricing—using React, Supabase, Asterisk PBX infrastructure, and spreadsheet automation. This article breaks down the technical architecture: a React study hub with 150+ flashcards and 65+ quiz questions, a 9-tab Excel tracker (FE modules, weekly schedule, topic tracker, error log, study log), and a Word curriculum document integrated via self-hosted infrastructure. If you're an engineer building SaaS or internal tools and want to understand how to architect a scalable certification platform without vendor lock-in, or if you're studying for FE/PMP and need a repeatable, cost-effective alternative to expensive test prep services, here's exactly how I structured the system, the database schema, the React component patterns, and the automation workflows that made it possible.