Senior Backend Engineer

To support the scaling of large-scale infrastructure for conversational AI, the full-time Senior/Staff Backend Engineer will design and implement efficient storage structures, scale simulation infrastructure, and own core backend services using TypeScript/Node.js and Python in a remote work environment. Key Responsibilities Design and implement storage structures, query paths, and retrieval systems that operate efficiently at scale Scale simulation infrastructure from 30K to 200K+ concurrent calls while ensuring 99.99% uptime Own core backend services and improve system visibility for production issues and performance Required Qualifications Minimum 5 to 15 years of experience in backend/infrastructure engineering with strong database and distributed systems experience Proven experience building or contributing to the storage or query layer of a database or large-scale data system Deep expertise in database technologies such as Postgres, Redis, Kafka, or ClickHouse Proficiency in TypeScript/Node.js and experience with cloud-native infrastructure, including AWS and Kubernetes Strong understanding of systems design and infrastructure engineering with a bias toward action