@waqarhabib
Full-Stack Developer for US Startups | React, Node.js, TypeScript | SaaS, API & Cloud | 100+ Projects | Fractional CTO
Freelance full-stack development, SaaS builds, API development, cloud migration, DevOps setup, MVP development, AI integration, and Fractional CTO engagements for US, UK, and UAE based startups and businesses. Open to short-term projects and long-term contracts.
Mar 25 · 5 min read · Every Node.js developer knows the event loop exists. Most can explain it at a surface level: single-threaded, non-blocking I/O, async callbacks. What they cannot tell you is exactly where their applic
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