The era of the 'everything' job board is over. As universal job listing websites such as LinkedIn become increasingly cluttered, both companies and candidates are migrating toward highly curated, niche marketplaces . But building a marketplace from scratch is a notorious technical trap. It's one thing to render a list of jobs; it's another to architect a system that handles real-time ledgers, secure payment rails, and automated job alerts that keep candidates coming back. Beyond the frontend, you need a comprehensive management engine — an admin panel powerful enough to moderate listings and track revenue without a stack that crumbles the moment you hit the front page of Hacker News. If you're planning to launch a job board this year, you need to stop thinking like a coder and start thinking like a closer .…