About the Role : Join a small, fast-moving team building our core backend from the ground up. We're looking for a Node.js engineer who can own system design end-to-end and is already comfortable using LLMs and agentic tooling to move faster as an engineer not just build features that use them.What You'll Do : - Build the core Node.js services and REST APIs from the ground up, designed to scale as we grow.- Take full ownership of system design service boundaries, data flow, caching, queueing, failure handling, and scale.- Ship features powered by AI/ML, including LLM and agentic capabilities.- Apply LLMs and agentic tools throughout the development lifecycle from design and code generation to testing and debugging.- Model data and tune SQL/NoSQL queries for performance; integrate with third-party platforms.- Troubleshoot production issues, own reliability,
and set the technical bar for the team to grow into.What You'll Bring : - 4+ years building production-grade backend systems in Node.js for B2C products at real scale.- Robust system design instincts you can reason through scalability, reliability, and trade-offs under real-world constraints.- Solid fundamentals across API design, service-oriented architecture, data structures, algorithms, and clean code.- Depth in SQL and/or NoSQL, including data modeling, query optimization, and performance tuning.- An AI-native workflow you're already using LLMs and agentic approaches to work more efficiently.- A mindset suited to small-team pace and breadth happy to pick up whatever moves the product forward. (ref:hirist.tech)