Job Title: Senior Server-Side Engineer Location: 100% Remote (U.S.) Position Type: Full-time, Direct W2 Salary Range: $100,000–$150,000 Annually Experience Required: 6+ years Sponsorship: U.S. Citizens, Green Card Holders, EAD Holders, and H-1B transfer candidates are encouraged to apply. This role focuses on building backend platform capabilities — request routing, traffic management, data fan-out, caching layers, asynchronous job execution, and durable event processing — that must handle very high traffic volumes with predictable latency and minimal operational toil.