About this role
Senior AI Engineer at Ruby Labs. Location: Europe or Georgia or Serbia or Turkey or Macedonia or Montenegro or Moldova or Bosnia And Herzegovina. Role: delivering features, maintaining systems, orchestrating models Requirements: 6+ years backend/full-stack engineering with production TypeScript/Node.js; 2+ years building AI/LLM systems; experience with LLM APIs, model routing, Langfuse/OpenRouter, Redis/PostgreSQL, and production-grade engineering practices. Category: Software Development Seniority: Senior Level Tools: Langfuse, Mixpanel, OpenRouter, Next.js, TypeScript, Node.js, Redis, LangChain, LlamaIndex, LangSmith, OpenAI, Anthropic, PostgreSQL, Cursor, Claude Code, Windsurf, Cloudflare Workers, KV, Durable Objects, Queues, R2, D1, Model Context Protocol (MCP) Commitment: Full Time Workplace: Remote Languages: English