Senior Backend Engineer

We're looking for a Backend Engineer to own core services and APIs end to end. You'll design, build, and run the systems that power social feeds, paper trading, live trading, and copy trading — from WebSockets and HTTP APIs to Kafka pipelines and Redis/Valkey caches. This is a hands-on role: you'll write production code, review PRs, debug incidents, and shape how we build for the long term. Key responsibilities Design, implement, and maintain backend APIs and background workers Own services acr…