Staff Software Engineer - Data Platform (Remote)

Senior Principal / Staff Engineer — Watchtower Labs In-person only - Bellevue, WA Citizenship required (DoD Clearance preferable) ai with three bullets that prove you can do this. No generic claims. This is not a "backend engineer" role in the usual sense. Drive performance until it hurts: profiling, contention, memory, throughput, p99s Lead by doing: you'll ship critical pieces yourself and pull others up with you Deep experience building real systems in production (distributed, performance-sensitive, mission-critical) Comfort working across C#/.NET Core, Linux, Python (or equivalent mastery + fast learning) Strong mental model of systems: concurrency, networking, data integrity, deploy/release, observability Work with real consequences and real pride when it ships