Radar Labs is the location infra dev tool. Doing 1B+ API calls per day. Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform). We're based in NYC with our HQ in Union Square. Interesting things we're working on include HorizonDB, our Geospatial database written in Rust, precise indoor location more accurate than iOS and Android leveraging Ultra-wideband, other sensors on the device and ML models, mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time, multi-region AWS deployment, 99.99%+ availability, speeding up deploys of backend data services with EC2 Warm Caches, automating security posture with Vanta, and frontend tools to visualize and debug location data at scale.