Senior Backend Engineer (Platform andamp; Security) We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world''s leading telecommunications giants, our mission is to restore trust in global voice communication. We are building a new category of network-native B2C security, moving from reactive, in-call analysis to proactive, pre-call verification that stops fraud before it starts. This is not a typical Back End role. You will be the Stability andamp; Monetization Owner, the foundational engineer responsible for two of the most critical pillars of our platform: our monetization engine and our Zero Trust security architecture. You will build the systems that protect our users'' most sensitive data, including PII and biometric voiceprints, while navigating complex global compliance laws. You will also build the metering and entitlements engine that powers our entire freemium business model. This position offers a unique opportunity to build a globally-scalable, highly secure, and compliant platform from the ground up. If you believe security and privacy are non-negotiable product features and you are excited by the challenge of building the commercial and trust-based foundation of a new product category, this role is for you. Key Responsibilities Monetization andamp; Platform Architecture Design, build, and own the end-to-end metering and entitlements system that powers our ..... full job details .....