ThreatMark

ThreatMark protects >50M end users from financial fraud and saves > $100M every year in losses. The company works with top banks in the EU and US. Responsibilities include developing large-behavioral models that recognize returning users using mouse movements, keystroke timings, and sensor data (accelerometer, gyroscope), detecting cyberthreats (e.g., malware, phishing, scraping) by exploiting browser sandboxes, managing ~PB scale data, and providing real-time scoring in milliseconds to drive authentication/authorization (2nd factor) flows. Roles mentioned: Backend Engineer (rewrite Python microservices to Rust, build a low-latency stream processing engine, build new detection features) and DevOps Engineer (Infrastructure as Code in AWS).