Senior GenAI Full-Stack Engineer - Brazil

Codurance · Portugal · Remote-friendly

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Company
Codurance
Location
Portugal
Employment type
Full-time
Posted
October 7, 2026

About this job

Design and extend production-grade LLM applications and agentic workflows using NestJS, XState v5, and the OpenAI SDK — flows include RAG, intent detection, clarification, fulfillment, escalation, tool-use, and human-in-the-loop state machines - Build and maintain the conversation-machine substrate: guard/action registries, flow validation (ajv), DB-driven flow configs, and design-time tooling - Build and evolve the AI systems behind Support Assistant, the player-facing support chatbot, and Agent Support Assistant, the AI copilot used by customer support agents - Integrate with MCP servers (Model Context Protocol) for tool-use and agentic behaviors - Evaluate, benchmark, and tune models across providers including OpenAI, Gemini, Anthropic, and future providers; own model selection…

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