Backend engineer - platform (node.js, mysql, mongodb, scalable systems)

We’re hiring a Backend Engineer – Platform (Node.js, My SQL, Mongo DB, Scalable Systems) to help build the backend foundations of Voice Stack, an AI-powered enterprise phone system for healthcare. Our backend systems process millions of events and API interactions, where performance, data design, and reliability actually matter. You’ll work on shared backend services, database and performance optimization, and platform capabilities that power the entire product - not on UI or feature-heavy work. This role is for engineers who care about how systems are designed, scaled, and sustained. If you’re inclined toward platform or system architecture, this role is your runway.
Core Responsibilities:
● Backend Platform Services: Build and maintain shared backend services and libraries used
across teams, with clear ownership and well-defined interfaces.
● Database & Performance Engineering: Design and optimize data models, queries, and
access patterns across My SQL and other datast...